This version June 25, 2014

We Are All QE-sians Now1
Takatoshi Ito2
Professor, National Graduate Institute for Policy Studies,
Project Professor, Graduate School of Public Policy, University of Tokyo, and NBER

Abstract.
The four major banks (BOJ, FRB, BOE and ECB) have adopted unconventional monetary
policy, or broadly-defined quantitative easing (QE), in the last several years. The broadlydefined QE can be classified into comprehensive easing (CE) and pure-QE. The former is aimed
at purchasing assets of dysfunctional markets and the latter is aimed at expanding monetarybase to stimulate demands. The objective of this paper is three-fold. First, various QE adopted
by four central banks are classified into CE and pure-QE. Second, the Bank of Japan (BOJ) is aharbinger for most QE measures in its earlier QE period of 2001-2006. Third, effects of BOJ’s
QE measures are empirically investigated with focus on the three possible transmission
channels with monthly data since January 1999. The long-term interest rate tends to be lower
and the yield curve tends to be flattened when the monetary base expands faster than nominal
GDP. The yen vis-à-vis the US dollar tends to depreciate when the Japanese monetary base
expands faster than the US monetary base. An impact of monetary base expansion on the
inflation expectation is not confirmed. Findings are consistent with a view that QE is effective,by lowering the long-term interest rate and the currency depreciation.
JEL. E31, E43, E44, E52, E58,

Keywords: Quantitative Easing, unconventional monetary policy, inflation targeting, inflation
expectation, central bank balance sheet, zero interest rate policy

1

The earlier drafts have been presented in a session “Unconventional Monetary Policies in Crisis
Times: Which Impact and What Legacy?” in the American Economic Association meeting, January2012; and the central banking seminar, “Global Stance of Monetary Policy” at the Federal Reserve
Bank of New York, October 23, 2013 and the international conference at the Bank of Japan, May 2829, 2014.
2
The author is grateful to Professors Jan Marc Berk, Guillermo Calvo, Maurice Obstfeld, andKazuo Ueda; as well as Messrs. Haruhiko Kuroda, Kazumasa Iwata, Hiroshi Nakaso, Paul Tucker,
and other participants of the Bank of Japan conference, for their comments. However, all views anderrors are mine.
1Introduction
The interest in the effectiveness of unconventional monetary policy—sometimes
dubbed as quantitative easing (QE)—has been raised as the major central banks adopted
monetary policy with purchase of various assets, resulting in the expansion of its
monetary base, which is the dominant component of the overall balance sheet of a central
bank. The objective of this paper is two-fold. First, various policy measures in the
category of unconventional monetary policy, or broadly-defined quantitative easing (QE),
adopted by the four major central banks are reviewed and classified into sub-categories
such as credit easing (CE) and pure-quantitative easing. Second, effectiveness ofquantitative easing (QE) on the interest rate, the exchange rate, the inflation rate and theinflation expectation will be investigated using mainly the Japanese data.
The first QE was introduced by the Bank of Japan (BoJ) in 2001 and maintained
until 2006. The period can be viewed as QE0, as it was the QE before the global financial
crisis. Many researchers, mainly Japanese, have examined how effective QE0 was, andone broad consensus is that the QE with some forward guidance lowered the long-term
interest rate and flattened the yield curve. An overall effect on stimulating economic
growth or getting out of deflation was not debatable.
After the global financial crisis of 2007-2009, all major central banks adopted
some forms of broadly-defined QEs in order to help stabilize dysfunctional markets, tosupport output activities, to avoid falling into deflation. The Bank of England (BOE)
tripled its balance sheet and the Federal Reserve System (FRB) doubled its balance sheet
in the wake of the Lehman Brothers failure. The European Central Bank (ECB) expanded
the balance sheet, but the rate of expansion was smaller than BOE or FRB. In the firstphase of crisis management, from September 2008 to the summer of 2009, FRB explicitly
mentioned that the primary purpose of asset purchase was to restore stability to thedysfunctional markets. Thus, it should be called “credit easing” (Bernanke (2009)). The
purchase of covered bonds and lending operation by the ECB can be viewed in the same
reasoning. The size of the balance sheet became a major monetary policy tool when the
FRB adopted a large-scale asset purchase, expanding the balance sheet further in 2010.
Observers started to call it QE2, while renamed CE to QE1.
The Bank of Japan adopted a new QE, termed QQE, much later than FRB, BOE,
and ECB. The BOJ started to expand the balance sheet under the comprehensive easingof October 2010, but the speed of expansion was much slower than other three central
banks. Only in April 2013, much later than other central banks in the post global financial
crisis, did the BOJ adopt the aggressive balance-sheet expansion.
An immediate origin of the global financial crisis that started in the summer of2

2007 was the subprime loans problem in the United States. The loans were securitized,
bundled and re-securitized (CDOs), and sold to wide-range of investors in the UnitedStates and Europe. As the value of securities started to decline, because the underlying
loans started to be defaulted, financial institutions started to deleverage. However, themore institutions rush to exit from the market, the price decline accelerated and soon thebuyer simply disappeared.
Those institutions which held too much for these securities and acted slowly inexiting from the toxic securities market increasingly found themselves short of liquidity.
Price quotes for assets were not available and no other institutions were able to lend tosuch institutions. Bear Stearns was forced to be sold in March 2008, with assistance ofFederal Reserve Bank. It was a remarkable that public assistance was extended topreserve the value of creditors to Bear Stearns. But, that was only the beginning. When
Lehman Brothers got into trouble of liquidity shortage in September, no institution was
willing to merge the institution without a large sum of public assistance, which was notavailable this time from the Federal Reserve.3
In the wake of the failure of Lehman Brother, no large financial institution that
had significant securities and structured product businesses was trusted by another.
Liquidity completely dried up. Central banks and governments in US and Europe werebusy closing down or injecting capital to large financial institutions to avoid total collapseof the financial markets. Central banks of major countries have adopted unconventionalmonetary policy, that is, (near) zero interest rate policy (ZIRP) and/or quantitative easing(QE).
As financial and real activities contracted worldwide, the major central banks—
the Federal Reserve Board (FRB), the European Central Bank (ECB), the Bank of Japan(BOJ), and the Bank of England (BOE) adopted (near-) zero interest rate and various
measures that can be summarily called “quantitative easing” (QE). The central banksbought kinds of assets that had not been purchased previously, with a large scale that had
not been seen earlier. The QE policy has a common feature of increasing, and maintaining
the increased, balance sheet. However, QEs of the four central banks were different inkinds of assets they bought, the timing of adopting QE, and the scale of its QE. There areseveral variants of QE policy.4
Among the different QEs, asset purchases of dysfunctional markets, which was
See Ito (2010) for details of what set off the global financial crisis and early stage of
QEs.
4 Some authors and central banks called such operations in various names andacronyms: credit easing (CE); large scale asset purchases (LSAP), nonconventionalmonetary policy (NCM), unconventional monetary policy (UMP).
3

3

called by Chairman Bernanke “credit easing,” is widely recognized as very effective. The
pure form of QE, expanding the balance sheet by purchasing long government bonds has
mixed reviews. It tends to lower the long bond yield, but evidence on impacts on the real
activities is thin. The variant of QEs of the four central banks are still in place as of thiswriting (summer of 2014), i.e., six years after the onset of the global financial crisis. We
are all QE-sians now.
The Bank of Japan had experienced zero interest rate policy (ZIRP) andquantitative easing (QE) well before the current episode of all major central banks
adopting QE. The Bank of Japan adopted ZIRP from February to August 1999, exercising
QE with increasing the size over time, and then successfully exiting in March/July 2006.
However, when the US and European economies fell into a deep crisis after the Lehman
Brothers collapse in 2009, the Bank of Japan was the last to adopt QE among the major
four central banks. In 2009, FRB, BOE, and ECB doubled and tripled their sizes ofbalance sheet. BOJ barely expanded the size of its balance sheet, resulting in large yen
appreciation. There are two possible explanations for inaction. First, by 2008, the Bankof Japan seemed to have developed a view that the QE of 2001-06 was not very effectivein stimulating the economy or increasing the inflation rate. Second, reformed Japanesefinancial institutions remain financially strong when the global financial crisis started.
Although financial institutions were strong, the Japanese economy was deep into a
recession with worsening deflation in 2009-2011, mostly due to a trade channel.
It was not until Prime Minister Abe put strong pressure on BOJ to adopt a boldeasing, that the BOJ took up QE that would rival other major central banks. On April 4,2013, newly appointed Governor Kuroda announced Quantitative and Qualitative Easing(QQE), which, among others, would double the size of the balance sheet in two years andlengthen the maturity of Japanese government bonds (JGBs) they hold on the balance
sheet. An anticipation and realization of the bold B/S expansion plan is widely credited
for depreciation of the yen vis-à-vis the US dollar by 20 percent and rise of Nikkei stock
price index by more than 60 percent between mid-November 2012 and mid-May, 2013.
The inflation rate has risen from negative territory to +1.3%. This paper analyzes thepossible causes of these market reactions to QQE in light of QEs of the four major central
banks. QQE is casually regarded to be much more successful than the earlier episode of
QE by BOJ, or QEs practiced by other central banks mentioned above.
A puzzle here is why the QQE of 2013 had so strong effects in producing yen
depreciation and stock price increases, when the pure QE as opposed to CE is broadly
considered to be weak in stimulating the economy. This paper will attempt to give an
explanation for the puzzle.
4

The rest of this paper is organized as follows. Section 2 describes details of QE
measures among the four major central banks with chronology. Experiences of the four
central banks are similar in their motivations, the exact implementations of ZIRP and QE
and their effectiveness seem to be different. Most advanced economies went into a deep
recession in the wake of the global financial crisis. Section 3 shows the movements ofbalance sheets of the four major banks. Section 4 describes the transmission channels.
Section 5 first describes movements of the exchange rate and the stock prices after Prime
Minister Abe started to campaign for lifting the Japanese economy out of deflation. Some
evidence will be presented in that monetary base expansion tends to cause currency
depreciation. The changes of the Phillips curve position and slope will be also examined.
This section will be a main contribution of the paper. On Section 6 concludes the paper.
1. Chronology and Taxonomy
1.1. Bank of Japan
1.1.1. Early ZIRP and QE, 1999-2006
In the wake of Japanese banking crisis of 1997-98 and rapidly declining output
and declining prices in 1998, the BOJ decided to lower the policy rate (call rate) to zeroin February 1999. This is the first case of the zero interest policy (ZIRP) among major
central banks (with a possible exception of the Swiss Central Bank in the 1970s).
However, the policy rate was raised by 0.25% in August 2000. The decision to end ZIRP
was controversial. Two votes were against this decision. The government representatives,
who are by law non-voting, requested to delay the vote of raising the interest rate until
the next meeting, according to the procedure allowed to the government representative.
The delay request was overruled by voting members of Monetary Policy Meeting(MPM). 5 The inflation rate was still negative at the time of decision and the global
economy started to slow down due to the IT bubble burst.
The economy did not improve, and in March 2001, the Bank of Japan adopted a
new instrument target, current account balance (CAB) at the Bank of Japan, which is theaccount that banks have their required and excess reserves. This is the beginning ofquantitative easing (QE) in Japan. Since the required reserves did not change significantly,
targeting the current account balance meant targeting the amount of excess reserves. Since
the excess reserves were not paid interest at the time, targeting the amount of excess
reserves means that the interbank rate (which is the policy rate) becomes zero. On theasset side, the Bank of Japan started to increase the amount of monthly purchase ofJapanese Government bonds (JGBs). The amount of long-term bond purchase and the5

See Ito (2004a) for a controversial decision in August 2000.
5

target amount of CAB increased as the Japanese economy could not get out of deflation.
The QE continued until March 2006, when the instrument target was switched back to the(zero) interest rate. After lowering the CAB from 35 trillion yen to 6 trillion yen in several
months, the BOJ was ready to exit. The interest rate was raised by 0.25% in July 2006.
Since reserves in CAB were not renumerated, reducing the amount of excess reserves tominimum was necessary to raise the interest rate. This was done between March and Julyof 2006. Since most of the long bonds purchased by the Bank of Japan had shorter
maturity, the process of reducing the size of CAB was rather smooth.
Amid worsening of global financial stability in the weeks following the collapseof Lehman Brothers, the Bank of Japan did not expand the balance sheet. The policy
interest rate was cut from 0.5% to 0.3% in October and then to 0.1 percent in December
2008. It participated in the US dollar swap among the G10 countries. There was nodecision on aspects on quantitative easing. The rate cut in October was decided by tiebreaking vote by the Chair of MPM (Governor). The BOJ in the wake of the Lehman
Brothers failure had a view that the Japanese financial markets and economy could not
be adversely affected by the global financial crisis, which would warrant some type ofQE.
It was not until October 2010 that a version of QE was introduced by BOJ. In
announcing “comprehensive easing,” the BOJ introduced a special, temporary programthat purchases assets and provides liquidity with fixed-rate, funds-supplying operation.
The asset purchase part is 5 trillion yen and funding operation by 30 trillion yen, a totalof 35 trillion yen. The maturity of assets to purchase ranges between 1 and 2 years. The
asset purchase program (APP) is on the balance sheet but deemed temporary. The reason
for creating the program was to make an exception to an earlier self-imposed rule that theamount of long bonds held by the Bank of Japan should be less than the amount of banknote issues. The amount of APP was increased to 91 trillion yen in several steps by
October 30, 2012. On that day, the government and BOJ signed a joint statement that bothwould cooperate toward overcoming deflation.
On January 22, the government and BOJ signed another document, in which the
inflation “goal” should be around 1 percent. The market welcomed the document,
generating yen depreciation and stock price increases, believing that this would lead tomore aggressive easing. However, it was not clarified having the goal leads to a different
policy, and the market reverted to the pre-announcement levels.
As the economy showed the sign of weakness, the government started to put
pressure on the BOJ in mid-2012. This resulted in the October 30 document, signed byGovernor Shirakawa, Finance Minister Jojima and Minister of State for Economic and6

Fiscal Policy Maehara. The statement called for ending deflation, reiterating theimportance of 1 percent inflation goal.
In the mid-November, the House of Representatives was dissolved and thegeneral election was to be held in mid-December. This turned out to become the beginningof the change in monetary policy and the relationship between the government and theBOJ.
1.1.2. QQE
Mr. Abe, then a leader of the opposition party, started to advocate aggressive monetary
policy in mid-November 2012 as a part of platform for the general election that was to beheld in December 16, 2012. Mr. Abe won the general election and became Prime Ministeron December 26, 2012.
Mr. Abe argued that ending the long-lasting deflation—negative inflation rates
for 15 years except several months—as a key to revive the stagnant economy. In order toraise the inflation rate, adopting 2% inflation targeting and aggressive monetary policy
were essential. The Bank of Japan and the government signed the document that the Bank
will pursue the 2% inflation targeting in January 2013. At the expiration of Governor
Shirakawa’s term, Mr. Abe appointed Mr. Kuroda, who was regarded by the market to be
sympathetic to the idea of inflation targeting and credible to pursue strong measures to
end deflation. Mr. Kuroda announced the quantitative and qualitative easing (QQE) at theend of his first monetary policy committee meeting, on April 2014.
The QQE policy had the following elements.6 First, it reiterated the 2 percent
inflation target of monetary policy, “at the earliest possible time, with a time horizon of
about two years.” In order to achieve this, the BOJ “will double the monetary base and theamounts outstanding of Japanese government bonds (JGBs) as well as exchange-traded funds(ETFs) in two years, and more than double the average remaining maturity of JGB purchases.”
The monetary base was chosen as a main operating target, and the BOJ “will conduct money
market operations so that the monetary base will increase at an annual pace of about 60-70
trillion yen.” This is the “quantitative” part of the QQE. Regarding type of assets to buy, theBOJ “With a view to encouraging a further decline in interest rates across the yield curve, theBank will purchase JGBs so that their amount outstanding will increase at an annual pace ofabout 50 trillion yen.” It also specified that JGBs to be purchased is “JGBs with all maturities
including 40-year bonds will be made eligible for purchase, and the average remaining
6

The quotations in this paragraph is from the Bank of Japan, “Introduction of the"Quantitative and Qualitative Monetary Easing” April 4, 2013.
http://www.boj.or.jp/en/announcements/release_2013/k130404a.pdf
7maturity of the Bank's JGB purchases will be extended from slightly less than three years atpresent to about seven years.” In addition, purchases of ETFs and J-REITs are expanded:“With a view to lowering risk premia of asset prices, the Bank will purchase ETFs and Japan
real estate investment trusts (J-REITs) so that their amounts outstanding will increase at anannual pace of 1 trillion yen and 30 billion yen respectively.” The lengthening of JGB
maturity and expanded purchase of ETF and J-REIT are the “qualitative” part. Although JGB,
ETF, and J-REITs have been bought under APP that was introduced under the comprehensive
easing of December 2010, the QQE abolished the APP and absorbed the assets on the regularbalance sheet of BOJ, but suspending the “banknote principle,” a limiting the JGB holding
under the size of banknote issues.
The amount of balance sheet expansion plan is much larger than the market
expected, and absorbing temporary APP in the general balance sheet gave an impressionthat the balance sheet gave an impression that quantitative easing of this scale willdefinitely continue until the 2 percent inflation targeting will be achieved. Lengthening thematurity of JGBs is also a key contributing to a rapid increase of the balance sheet. Under
APP, only short-maturity government bonds and bills were purchased.

1.2. Federal Reserve Board
The Federal Reserve Board (FRB) decided to start buying private securities
under various facilities, which later be named as “credit easing” in January 2009 by
Bernanke (2009). Credit easing was designed to intervene in dysfunctional markets due
to liquidity dry-up, caused by severe informational uncertainty. The Federal Reserve acted
as a buyer of the last resort. Bernanke (2009) explained the difference between his policy
and BOJ’s policy from 2001 to 2006 as follows.
“The Federal Reserve's approach to supporting credit markets is conceptually
distinct from quantitative easing (QE), the policy approach used by the Bankof Japan from 2001 to 2006. Our approach--which could be described as"credit easing"—resembles quantitative easing in one respect: It involves an
expansion of the central bank's balance sheet. However, in a pure QE regime,
the focus of policy is the quantity of bank reserves, which are liabilities of thecentral bank; the composition of loans and securities on the asset side of thecentral bank's balance sheet is incidental. Indeed, although the Bank ofJapan's policy approach during the QE period was quite multifaceted, theoverall stance of its policy was gauged primarily in terms of its target for bankreserves. In contrast, the Federal Reserve's credit easing approach focuses on
the mix of loans and securities that it holds and on how this composition of8assets affects credit conditions for households and businesses.” (Bernanke(2009))
Bernanke seems to emphasize the difference between the FRB policy and the
Bank of Japan policy targeting the amount of reserves (current account balance). In this,The balance sheet quickly doubled in several months. Increasingly, the Federal Reservebought Mortgage Backed Securities (MBS). The acute phase of financial crisis ended bylate 2009. The FRB stopped new purchases of MBS, as the initial goal was achieved in
March 2010. However, the GDP gap had become large and the inflation rate had comedown significantly. In order to maintain stimulus posture, the FRB decided to maintainthe size of balance sheet, by replacing the maturing (and early repayments of) MBS withnew purchase of Treasury bonds.
The decision to maintain the level of B/S was made on August 2010. This is thetiming of change from CE to QE. In November the so-called QE II, increasing the size of
B/S by buying Treasury bonds. However, the switch from CE, buying securities ofdysfunctional markets only, to QE, the size of B/S matters, occurred in August rather thanNovember of 2010.
The QE-2 ended in June 2011. The Federal Reserve never uses QE, describing
their policy to expand the B/S. Instead, they call large-scale asset purchases (LSAP).
However, here we interchangeably use QE and LSAP. The expansion of B/S was
remarkable, but with an increasing criticism too, as measurable improvement was notobserved. In September 2011, the so-called operation twist, selling the short-term
Treasury bills are sold and long-term bonds were purchased, without significantly
changing the size of B/S.
The so-called QE-3 was initiated in September 2012, without specified ending
date or total amount of purchase. It specified the amount of monthly purchases.
1.3. ECB
The ECB’s non-standard measures include three stages: The first stage to
alleviate liquidity shortage by providing longer term funding; the second stage topurchase covered bonds; the third stage to purchase government bonds of countries thatare hit by European sovereign debt crises; and the fourth stage to announce a defense of
the euro.7
This section draws from ECB publications, in particular, for the early part of thecrisis, see European Central Bank, “The ECB’s Response to the Financial Crisis,”Monthly Bulletin, October 2010, pp.59-74.

7

9When the global financial markets experienced liquidity shortage from thesummer of 2008, many European institutions, along with the US institutions, attempted
to deleverage. The shortage of liquidity in the euro zone was severe, and the European
Central Bank (ECB) provided liquidity first through their conventional channel bylowering the policy rates, but expanded the tools to longer funding. ECB Governing
Council decided in October 2008 to increase the frequency and size of its longer-term(with a maturity of up to six month) refinancing operations; to conduct all liquidityproviding operations through a fixed rate tender procedure with full allotment; and toprovide US dollar and Swiss franc via swaps.
In May 2009, the ECB decided to provide longer term (12 months) funding andto purchase euro-denominated covered bonds issued in the euro area. Purchasing of
covered bonds were described by ECB as follows: “This measure aims to improveliquidity in the private debt security markets and encourage a further easing of credit
conditions given that the deleveraging process in the banking sector, which has recently
accelerated, is likely to continue for some time. Specifically, covered bond purchases inboth primary and secondary markets should improve the funding conditions for financial
institutions that issue covered bonds in the primary market. Covered bond purchases inthe secondary market should contribute to improving the depth and liquidity of the market
and should further narrow the spreads of covered bond yields over those on government
bonds. This should improve the risk profile of institutions holding covered bonds andthereby help to spur credit growth. Furthermore, covered bond purchases could encourage
new issuances in the primary market and contribute to activity in the secondary market,
which has remained subdued.”8 Purchasing covered bonds are targeted to ease credit
conditions of these bonds, and as a result to ease liquidity conditions of banks in the eurozone. Indeed the decision was justified on the ground of ECB’s support to the banking
system. This may be comparable, with a narrower scope, to operations by FRB topurchase private sector’s debts several months earlier in the United States, which
Chairman Bernanke called credit easing.
The size of covered bond purchases, decided on June 4, 2009 was 60 billion euro.
One of the conditions for bonds eligible for purchase was AA-rated or above by at least
one of the major rating agencies (Fitch, Moody’s, S&P or DBRS).
The Euro zone financial markets were hit by a crisis of sovereign debts in 201011. The euro-zone sovereign debt markets were affected in months following the Lehman
Brothers’ failure. However, the situation was under control toward the summer of 2009.
The debt yield started to climb up again after the Greek government’s announcement in
8European Central Bank, Monthly Bulletin, June 2009, p. 10.
10November 2009. Greek government revealed that it had much larger government deficits(12.7% of GDP) than earlier reported. The sovereign debt yields of these countries went
up to a level that a crisis will become self-enforcing.
In May 2010, the IMF, ECB and EU (troika) agreed with the Greek governmentthat the troika provide financial assistance to Greece in return for structural adjustment.
On May 10, 2010, the ECB announced a new policy called “Securities Markets
Programme” (SMP), in that the ECB purchases purchase public and private debt
securities in the euro area to ensure depth and liquidity in those market segments. The
ECB stated that the objective is to restore an appropriate monetary policy transmission
mechanism. This also is to restore liquidity to dysfunctional markets, which this time
include sovereign debts. The operation is not in the type of quantitative easing because
these purchase is sterilized through specific operations to re-absorb the liquidity injected.
The sovereign debt yield spread (over the German bonds) for GIIPS temporarily
fell after the measures in May 2010, but it resumed accent soon after. Once the Greek
situation was in focus, the investors started to sell securities in countries that had relatively
bad government debt and financing situations: Greece, Italy, Spain, Portugal, and Ireland(GIIPS). In August 2011, the yield spreads of ten year bonds for Greece, Portugal, andIreland reached more than 800 basis points. ECB re-started SMP operations in August
2011 and continued until September 2012. In addition, in December 2011, the Long Term
Refinancing Operations (LTRO) was announced and done. With these measures, the yieldspreads narrowed and the crisis was headed off.
On August 2, 2012, the ECB announced that the ECB is ready to purchasesovereign bonds in outright monetary transactions (OMT) if necessary to protect the euro
from disintegration. Details of OMT were announced in September and SMP was
terminated. The OMT was placed as an ultimate measures to defend the euro with open
ended commitment to purchase debts. However, it was designed to purchase ofgovernment bonds of countries that require IMF programs (including precautionary ones)
with conditionality. It is emphasized in the statement that OMT will be fully sterilized.
OMT has not been used so far. This is not pure-QE in the sense that it is not intended to
expand the balance sheet of ECB. 9 It was reported that Bundesbank and German
government were against ECB's bond-buying plan, as it was regarded to erode "thewillingness of Eurozone member-states to implement reforms."
But, in the second half of 2012, the sovereign bond spreads (over German’s
See "Technical features of Outright Monetary Transactions", ECB Press Release, 6
September 2012.

911

yield) went down significantly. Many attributed this to OMT.
In sum, ECB operations—Covered bond purchases, LTRO, SMP, and OMT—
were said to be targeted to restore liquidity and depth in the market. Effectively, SMPs
helped yield spreads of government bonds of the crisis hit countries come down. Also,
OMT announcement had a similar effect. The quantitative easing in the sense of
expanding the balance sheet itself was not mentioned, and it was specifically mentionedthat SMP and OMT would be sterilized. However, the expansion of balance sheet did
occur through easier market conditions, via covered bond purchases and LTROs, at leastin the beginning stage of the global financial crisis.
In the spring of 2014, President Draghi suggested that monetary easing may beneeded to curtail the exchange rate appreciation. It was widely received by the financial
market participants that the ECB may be considering quantitative easing.
1.4.BOE
Between March 2009 and January 2010, BOE purchased £200 billion of assets,
mostly medium and long-dated gilts. These asset purchases amounted to purchase ofnearly 30% of the outstanding gilts held by the private sector. Combined with earlier
liquidity support measures to the banking sector, the size of the Bank’s balance sheet inratio of GDP tripled compared with the pre-crisis period. This was the first phase ofquantitative easing for the BOE, namely QE-1.
The BOE restarted the QE on October 6, 2011 by announcing the increase in thesize of the purchase program by £75 billion to a total of £275 billion. The expansion
continued in steps. In February 2012, the size was expanded by £50 billion to a total of£325 billion, and then expanded again in July 2012 by £50 billion to a total of £375 billion.
The BOE, unlike ECB, did not hesitate purchasing long government bonds; andunlike BOJ and FRB, it did not buy private sector’s assets. The BOE’s policy represents
a pure form of QE.
1.5. Taxonomy
As reviewed above, broadly-defined QE has indeed two types: one that are
targeted to stability dysfunctional financial markets, credit easing, and narrowly-defined
QE, or pure-QE, that aims at (some components) of the balance sheet.10
Ueda (2013) also presented taxonomy. He categorizes non-conventional policy of BOJ
and FRB into “forward guidance,” “LSAP1,” “LSAP1” and “QE.” QE is the policy
adopted by BOJ from 2001-2006.”. Then, he critically reviews most recent events. He
examines the possible logic of a view that adopting inflation targeting with aggressive
monetary policy works to stimulate aggregate demand and eventually raise the1012The CE operations include programs that purchase either public or private assets
where markets are dysfunctional, i.e., liquidity and pricing are deemed abnormal. The CE(or QE-1) of FRB in 2008-2009 and ECB purchase of covered bonds and sovereign bonds(SMP and OMT when implemented) belong to this category. The FRB’s purchase of MBS
under QE-3 is also in this category. The FRB operation twist, changing composition ofassets without changing the size of balance sheet belongs to this category.
The BOJ’s QE from 2001 to 2006 and BOE’s QEs belong to narrowly-defined
QE. So is FRB’s QE-2 and BOE’s QEs.
The qualitative part of QQE introduced by BOJ is of CE-type and the “qualitative”
part of QQE is of pure-QE type. The FRB’s QE-3 also has a CE-type (purchase of MBS)and QE-type (purchase of Government bonds). Table 1 summarizes this taxonomy.
<Insert Table 1 about here>
2. We are all QE-sians now
Most measures taken by the four major central banks that are described above meant theirbalance sheets (B/S) expand, although their stated objectives and transmission channels
are different. In the period of global financial crisis, the balance sheet movement is shownin Figure 1.
<Figure 1 about here>
The BOE balance sheets rose most among the four. Compared to the pre-crisis level, it
tripled within a few months following the Lehman Brothers collapse. The level stayed ataround 300% of pre-crisis level from mid-2009 to late 2011. Due to its QE-2 and QE-3,
the level as of May 2014 is about 500% of the pre-crisis level.
FRB has increase its balance sheet in steps, CE, QE-2, and QE-3. The QE-3 hasbeen open-ended but it is slowing down in 2014 as a result of tapering. By the end of
2014, the growth of balance sheets will stop. The resulting level of QE will be similar tothe one of BOE, namely the 500% of the pre-crisis level.
ECB has been reluctant in expanding the balance sheet for its sake. The
outstanding balance of SMP, in which government bonds of member countries have beenpurchased, has been “sterilized.” OMT has not been activated, to that it has notcontributed to the balance sheet. The balance increased in the weeks immediately
following the Lehman Brothers collapse, and then from mid-2011 to mid-2012. The peaklevel was about 280 percent of the pre-crisis level.
BOJ did not expand the balance sheet in the wake of the Lehman Brothers,
despite other thee banks increased the balance sheet—BOE three times, FRB twice, andinflation rate, within two years as the inflation targeting policy sets out.
13

ECB by 50%. The BOJ balance sheet was basically flat until October 2010, the time ofcomprehensive easing. Although wide-ranging asset purchases were announced, its
impact on the balance sheet was small compared to other three central banks. Only after
QQE was introduced in April 2013, the BOJ balance sheet started to increase measurably.
By the end of 2013, the increase in BOJ balance sheet (in ratio to pre-crisis level) overtook
the ECB balance sheet. Under QQE, the BOJ had committed to double the size ofmonetary base, which is closely tied to the size of balance sheet, in two years. Therefore,
it is projected until the end of March 2015. Even at the end of two-year QQE commitment,
the increase in size of balance sheet (in ratio to pre-crisis level) of BOJ is about the halfof BOE and FRB, but higher than ECB.
3. Transmission Channels
3.1. Objectives
Price stability as a primary objective has become standard in monetary policy among
advanced and emerging market countries. Many central banks have explicitly adopted(flexible) inflation targeting (FIT) and others have been practicing without declaring it.
BOE has adopted inflation targeting since 1992. Between mid-1990s and mid-2000s,
central banks of many advanced countries and emerging market economies have adopted
FIT. The US Federal Reserve Board and Bank of Japan were late comers to embrace FIT.
The FRB adopted in January 2012, but it had practiced it without declaring it for several
years before the formal declaration. The BOJ adopted FIT in January 2013. The fact FRB
and BOJ adopted inflation targeting after the global financial crisis occurred is suggestivethat FIT is actually helpful in maintaining the inflation expectation anchored (continued
to be anchored in FRB and newly anchored in BOJ) so that achieving price stability iseasier with FIT than without.
Regarding additional objectives (or mandates), central banking laws andpractices vary across countries. Achieving maximum output, or minimizing output gap,
is implicitly or explicitly recognized as an additional objective. Also, the stability offinancial markets and institutions are written sometimes explicitly and sometimes
implicitly.
Keeping output gap smaller (achieving potential output) and keeping financial
markets stable have been frequently mentioned as additional objectives or as
preconditions to price stability. Hence, central banks with these additional objectives
found it easier to implement QE, in particular in the form of CE, since measures can beeasily justified and explained to the legislature and general public. In some quarters ofcentral banking, the single mandate of price stability is the best to keep independence of
14

the central bank and monetary dominance. However, my interpretation of the recent crisis
evolution is that the global financial crisis revealed that explicit mention of financial
market stability and output stability may be useful additional mandates to have in a crisis,
as explained below.
The Federal Reserve have been created with “dual mandate,” namely pricestability and maximum employment. The regularly scheduled testimony by Chairman of
the Federal Reserve Board to the Congress always emphasize the two mandates.
The Bank of Japan law also mentions that “the maintenance of stability of thefinancial system” (Article 1-(2)) is the Bank’s purpose. Article 2 states: Currency andmonetary control by the Bank of Japan shall be aimed at achieving price stability, thereby
contributing to the sound development of the national economy.” This article is intended
to prevent the Bank to pursue price stability single-mindedly, if output activities arecontinuously stagnant and output potential is not realized for a sustained period.
Before the global financial crisis of 2008-09, price stability and financial
systemic stability were separated between the Bank of England and Financial Services
Authority (UK FSA), respectively. However, after the global financial crisis subsided, theUK government decided to move back the role of financial stability back to the Bank ofEngland.
The treaty that established ECB has articles that prohibit a bail-out of thegovernment and monetary financing of the government (Articles 125 and 123 of the
Lisbon Treaty).11 There has been a controversy within Euro Zone countries over SMP
and OMT due to these articles. ECB’s hesitation of buying government bonds for any
purpose reflects the controversy.
Is it easier for a central bank with additional mandates (output, financial stability)
to practice QE? When financial stability is explicitly mentioned as a mandate, it is quite
easier for a central bank of intervene in the dysfunctional market. However, financial
stability was an overwhelming concern at the most acute stage of global financial crisis,11

Article 123. 1. Overdraft facilities or any other type of credit facility with the European Central
Bank or with the central banks of the Member States (hereinafter referred to as ‘national central
banks’) in favour of Union institutions, bodies, offices or agencies, central governments, regional,
local or other public authorities, other bodies governed by public law, or public undertakings ofMember States shall be prohibited, as shall the purchase directly from them by the European Central
Bank or national central banks of debt instruments. Article 125. 1. The Union shall not be liable foror assume the commitments of central governments, regional, local or other public authorities, otherbodies governed by public law, or public undertakings of any Member State, without prejudice tomutual financial guarantees for the joint execution of a specific project. A Member State shall not beliable for or assume the commitments of central governments, regional, local or other publicauthorities, other bodies governed by public law, or public undertakings of another Member State,
without prejudice to mutual financial guarantees for the joint execution of a specific project.
15

from September 2008 to the spring of 2009, whether the financial stability objective is
explicitly written in the law was not a problem. In fact, the shock was so large to the US,
UK, and Euro-zone financial institutions, interventions were justifiable even on the pricestability objective alone. This was the case in the Bank of England. However, in therecovery phase after the sharp downturn, having additional objectives seemed to havehelped Federal Reserve pursue more aggressive QE.
3.2. Transmission Channels
Transmission channels under QE are similar to those of conventional monetary
policy, but the instruments are different and theoretical prediction may be different.
Instead of adjusting the policy interest rate, expanding the balance sheet by purchasing
assets is purchases. Purchases of assets from the private sector are likely to cause theportfolio rebalance among household and institutional investors. Moreover, when thepurchased assets are long-term bonds, the long-term bond yield is expected to decline.
This is more direct demand-supply relationship than purchasing short-term assets with aforward guidance with a commitment to keep the low interest rate longer. When those
who sell long bonds and other assets to the central bank purchase riskier assets, such as
foreign assets and equities, the exchange rate is expected to depreciate and equity prices
are expected to rise. Then, wealth effects for those who hold foreign assets and equities
will increase consumption and investment spending. Chairman Bernanke and President
Mario Draghi do not hesitate to admit that any of the above mentioned channels, including
the exchange rate channel, would work, although exactly by how much is not clear.
So, let us examine the following four channels. The first channel is to lower the
long-term interest rate. This can be done either by “forward guidance” and buying longterm government bonds. The forward guidance includes verbal commitments of keeping
the zero interest rate policy for a long time (longer than other wise) or show economic
conditions (threshold of the inflation rate or the unemployment rate) that would trigger
the rate hike, or both. The forward guidance works through changing expectations of
future policy (short) rate. Purchasing long government bonds by the central bank has adirect impacts through changing demand and supply of the bond market.
The second channel is the exchange rate. Under the conventional regime, thelower interest rate policy tends to result in currency depreciation through capital flowsthat pursue the interest rate differential. Depreciation tends to make exports to grow andimports to be replaced by domestic production. So this helps the economy to grow. A
question is whether QE can generate depreciation even when the interest rate is stuck at
zero. Expansion of balance sheet means liquidity is provided to the private sector, which16causes the portfolio rebalance. When newly acquired assets by residents include foreign
assets, the exchange rate depreciates.
The third transmission channel is through higher asset prices. Asset prices tend
to rise when the interest rate declines and households and firms are encouraged to takemore risk. QE and forward guidance are designed to produce portfolio rebalance amongassets of households, corporations and financial institutions. Once asset prices becomes
higher, consumption and investment will be stimulated.
The fourth transmission channel is the expectation channel. Adopting QE,
especially when accompanied by explicit inflation targeting can influence on inflation
expectation. In addition, when inflation expectation is not anchored at the desirable rateof inflation, enhancing credibility by adopting an inflation targeting frameworkcontributes to influences inflation expectation. Adoption of inflation targeting by FRB
and BOJ is a good example.
These channels are summarized in Figure 2.
<Figure 2 about here>
3.3.Effectiveness of QE: Literature Review
Borio and Disyatat (2009) provided a taxonomy, a detailed discussion oftransmission mechanism and evaluation of various policies of advanced countries.
Reviewing experiences of various countries, they conclude the credit easing policy (CEtype) has been effective, just expanding the monetary base (or specifically, excess reserve)
is not effective. There is no sign of an increase in bank lending. They take the BOJ
experience of QE, 2001-06 as an example. Likewise,
Ugai (2007) presents a comprehensive survey for the period of BOJ ZIRP and
QE, from 1999 to 2006. He examined the literature according to the different transmission
channels. According to Ugai (2007), the followings have become a conventional wisdom:First, for the forward guidance (policy duration) effect on the lowering the yield curve isconsistently confirmed by Baba, et al. (2005), Oda and Ueda (2007), Okina andShiratsuka (2004), and Bernanke, Reinhart and Sack (2004). Second, An increase in CAB(excess reserves) on JGBs does not have a direct effect, but has a signaling effect on theyield is confirmed (Oda and Ueda (2007)). Third, Kimura and Small (2006) showed thatin the expanding balance sheet policy, corporate bond yield was lowered and the yen
depreciated. However, they showed that QE impacts on the stock prices and low-grade
corporate bond prices had opposite signs. Fourth, the literature is divided over effects of
CAB of 2001-2006 on the inflation rate, GDP and industrial production. Kimura et al.
(2003) found no macroeconomic effect; Fujiwara (2006) found again insignificant effects
17

on inflation, but mixed results on industrial production.
In sum, for BOJ policy from 2001 to 2006, a commitment of keeping the ZIRP
longer than normal had an effect of shifting the yield curve lower. It was at the time calleda “policy duration effect.” QE has lowered funding costs of corporate funding costs. It isequivalent to what is called forward guidance now. The portfolio rebalancing effects wasfound either small or insignificant. Whether QE has effects on growth or inflation was
not conclusively determined from the data.
On the forward guidance, the earliest contribution of suggesting the value ofcommitment to future inflation in order to change expectation was Krugman (1998).
Bernanke and Reinhart (2004) identified the transmission channels of portfolio rebalanceand expectations. In addition, they also argued that purchasing of government bonds will
shift the future inflation tax burden from the public to the central bank.
Krishnamurthy and Vissing-Jorgensen (2011) examined FRB’s QE policy on theinterest rates. With an event-study they examined the interest rate reactions to policychanges during the period of CE (i.e., QE-1) and QE-2. They have found effects on
interest rates of private securities as well as Treasuries. In particular, they found the longgovernment rates had responded both in QE-1 and QE-2. Gagnon, Raskin, Remache, andSack (2011) also found that the long-term interest rates of Treasuries and private bonds
did become lower, upon markets receiving news (hints and announcement) of large-scaleasset purchases based on a careful event-study. They also conducted time-series analysis,controlling unemployment, CPI, and bond supply conditions, and found that the longbond yields came down with Federal Reserve purchases of long-bonds in a sample period
from December 1986 to June 2008.
Hamilton and Wu (2012) argued that even changing the maturity structure of
FRB holdings of Treasuries can influence the long-term yield, implying that an operation
twist (selling short bonds and purchasing the same amount of long bonds) could lower
the long-term interest rate. Swanson and Williams (2013) also examined the differential
impacts of QE on medium and long term interest rates.
Gambacorta, Hofmann; and Peersman, (2014) examined unconventionalmonetary policies of eight advanced countries in the post-global financial crisis withpanel VAR. They found that the expansion of the balance-sheet generates temporary
increases in economic activities and consumer prices. Impacts on economic activities
were as large as conventional measures, while impacts on consumer prices are weakerand less persistent.
Ueda (2012a, 2012b, 2013) reviewed the BOJ policy changes—ZIRP and QE—of the period from 1999 to 2011. He classified BOJ policy decisions during the period18into four types: (1) management of expectation, that is, forward guidance; (2) targeted
assets purchases in the dysfunctional market (US-QE1) and large scale asset purchaseswith intention of portfolio rebalancing (QE2); and (3) Expansion of balance sheet bypurchasing short term Treasury bills. Then he conducted an event study examining
reactions of the yen-dollar, the stock prices, and various interest rates, around theannouncement dates, with a window of before-and-after changes for either 2 days or 1
week. He concluded that forward guidance and targeted asset purchases were effective inlowering the interest rate and raising stock prices. The results on the exchange rate wer
mixed. The results are consistent with a detailed study in Oda and Ueda (2007).
Takeda and Yajima (2013) examined effectiveness of BOJ QE from 2001 to2006,
using a VAR model. They classified QE into types of providing liquidity with CAB, ofproviding liquidities in the market, of purchasing assets and of expanding balance sheet.
The market variables in their analysis included the yen/dollar exchange rate, stock prices,
JGB, and other market yield spreads. Stock prices were shown to respond positively to
the CAB expansion, but long bond purchases negatively to the CAB expansion. Overall
results are not really conclusive. Some measures produced results contrary to prediction.
4. Abenomics12
The economic policy package of Prime Minister Abe is nicknamed as “Abenomics.” It
has three arrows: First, aggressive monetary policy and inflation targeting; second,
flexible fiscal policy; and third, growth strategy. The QQE introduced by Governor
Kuroda on April 4, 2013 is an important part of the first arrow.
This section is an overview of impacts of the first arrow of Abenomics on thefinancial markets and macro-economy. Figures 3 and 4 show the reactions of theexchange rate (nominal yen-dollar rate) and the stock prices (Nikkei 225), respectively.
Several political and economic events are written in the figures.
<Figures 3 and 4 about here>
There are several remarkable points that are shown in these figures. First, thereactions of the exchange rate and the Nikkei stock prices were large. Between midNovember 2012 and mid-May 2013, the yen depreciated by more than 20%, and the stock
prices rose more than 60%. Second, two-thirds of the climb occurred before the QQE wasannounced on April 4, 2013. Third, the yen-dollar exchange rate and the Nikkei stock
prices have stayed in the box ranges since May 2013 to time of this writing (May 2014).
The first sign of changes came even before Mr. Abe became prime minister. The
House of Representatives (the lower house) was dissolved on Nov. 16, and investors in
12This section draws on Ito (2013a).
19the foreign exchange and stock markets immediately forecasted that the Liberal
Democratic Party (LDP) would win in the general election to be held within a month.
Thus, the yen/dollar rate and stock prices started to react to what Mr. Abe, then the
opposition leader, had to say about his economic policy. On the day before the dissolution,
the yen/dollar rate was 81 yen and the Nikkei 225 stock index was at 8,830 yen.
During the election campaign, Mr. Abe emphasized the need to reform the Bankof Japan (BOJ), which had allowed deflation to continue for 15 years. Between midNovember 2012 and mid-January 2013, he had been consistent and insistent in calling fora drastic change in Bank of Japan’s policy. Earlier The Bank of Japan had agreed to “a1% goal” in February 2012, but Mr. Abe said that it was not enough and “a 2% target”
has to be introduced. The BOJ had resisted against a proposition of an inflation targeting
framework since the beginning of ZIRP 1999 (Ito (2004a).
The market gradually believed the plausibility of such steps, especially after thegeneral election on Dec. 16 which the Abe-led LDP won. Mr. Abe became Prime Ministeron December 26. As prime minister, Abe has continued his campaign for a 2% inflation
target and aggressive monetary easing.
After some strong verbal persuasion coming from Prime Minister Abe, the BOJ
agreed to sign a document on January 25, 2013 to declare that the BOJ would take the
2% CPI inflation rate as a policy target. By this time, the yen had depreciated by 11% to
91 yen and the Nikkei stock index had risen by 24% to 10,927, without any change in the
BOJ policy in terms of large-scale asset purchases. Only talk and expectation had could
produce such changes. The yen depreciated without any foreign exchange intervention
and ahead of a massive expansion of the balance sheet of the BOJ.
Then Prime Minister Abe started to call for the appointment of a person who
would support his idea of inflation targeting and aggressive quantitative easing upon
expiration of the then governor’s term. Eventually, he selected Haruhiko Kuroda, thenpresident of the Asian Development Bank, as new BOJ governor. The first Monetary
Policy Board meeting under Governor Kuroda took place on April 3-4, 2013, with policychanges announced on April 4. Governor Kuroda explained the new policy, termed“Quantitative and Qualitative Easing” (QQE), at a press conference with charts in efforts
to improve on the communication front. On April 4, the stock index closed at 12,635,
some 43% up from Nov. 15; and the yen was at 96 yen/dollar, a 16% depreciation since
the same date.
The market was impressed by QQE and the yen would further depreciate and thestock prices would continue rising. On May 9, the yen/dollar rate crossed the 100
yen/dollar line. Stock prices continued to rise and the yen continued to depreciate. On
20

May 22, the Nikkei 225 closed at 15,627 yen (up 77% since Nov. 15), and the exchange
rate became 103 yen/dollar (a 21% depreciation).
On May 22, a hit of “tapering”– that is reducing the pace of asset purchases by
the Federal Reserve – was expressed by Chairman Ben Bernanke in the United States.
The yen started to appreciate and world-wide stock prices started to decline. By mid-June,
the yen and stock prices returned to the level of April 4. Some critics argued that a mini
bubble caused by QQE was over. However, the yen again depreciated to 100 yen/dollar
and the Nikkei 225 index rose above 14,000 yen. So the critics have so far been provenwrong.
How should we understand these market movements? One element was
fundamentals. The level of the yen at around 80 yen/dollar was widely considered to be
an overvaluation of the Japanese currency. The safe-haven effect – fleeing from the US
dollar – had occurred since late 2008 and from the euro since late 2010. Depreciation
since mid-November can be understood to be a correction of overvaluation. The otherelement was expectations. Persistent talk of 2% inflation targeting and aggressive
monetary policy made market participants believe that such a policy would be adopted
by the new governor to be appointed by Mr. Abe. So by the time the QQE was announced
on April 4, some of the effects of aggressive easing had already been priced in.
As the episode is quite recent, there is no literature except Ueda (2013), whoreviewed the episode of recent QQE (since March 2013) by BOJ. He showed that themagnitudes of yen depreciation and rise in stock prices in response to the change in thelarge asset purchases have been unusually large compared to the past QE experience of
2001-06. He also pointed out that some of these movements are results of foreigners’
speculative activities, which may not be based on economic fundamentals.
In the next sub-section, I will attempt to conduct some econometric analysis toshow how BOJ policies, QE and QQE, have impacted on market variables via different
transmission channels.
5. Econometric Analysis
5.1. The impacts of the B/S expansion on the bond rate
Several recent studies found that QE (unconventional monetary policy) has indeed
lowered the long interest rate. Theory predicts that expanding the balance sheet, either
buying long bonds directly or other assets causes portfolio rebalance. Lower long bondyield will stimulate demands by lowering bank loan and mortgage rates. This isconsidered to be a prime channel of QE.
In order to check whether the balance sheet expansion had an impact on the long21

term interest rate, the following regression model is attempted.
10

10

0

where 10 is the 10 year bond yield;
is the unemployment rate;is the(headline) inflation rate;is the call rate;is the BOJ’s balance sheet in ratio tonominal GDP. There are two dummy variables:
0 is 1 for the period of Bank ofJapan’s QE0 and 0 for other months;
takes the value of 1 for the Abenomics period,
namely, 2012m12 to current.
Regression results are shown in Table 2, with different specifications. An
increase in the unemployment tends to lower the long-term interest rate (10 bond yield)
in most of specifications. The policy interest rate (the call rate) does not impact on thelong rate.
Table 2 about here
The estimated coefficient of MBGDP suggests that an expansion of the balancesheet (in ratio to GDP) lowers the 10 year bond yield. This results seems to be robust fordifferent specifications. The QE0 dummy is not statistically significant. The dummy
variable of the Abe period suggests that it is significant, in lowering about 8 basis points.
But when MBGDP is included also in the regression, the Abe is not significant.
When monetary easing takes place, either via conventional measures or via QE,
the yield curve tends to be flattened. Put differently, the difference between the long-termbond rate and the short-term bond rate becomes smaller. This is now tested with the BOJ
monetary policy. The yield spread between the 10 year and 2 year bonds are regressed on
the size of balance sheet and QE dummy variables, controlling for the US yield spread,the unemployment rate, and the call rate.
10

2

10

2

10

2

0
where i2 is the two year bond rate; ius10 and ius2 denotes the US treasury yield of 10
year and 2 years, respectively. The results are shown in Table 3. Again, the balance sheet
to GDP ratio has a statistically significant effects on the bond yield spread. An expansionof the balance sheet tends to flatten the yield curve.
Table 3 about here
It is found that neither QE0 nor the Abenomics dummy had a significant impact
on the yield curve, with or without the balance sheet variable.
22

In sum, an expansion of the balance sheet seems to be a powerful tool to lower
the long-term interest rate in Japan. In addition, the impact on the 10 year bond rates islarger than that of 2 year bond rate, so that the yield curve tends to flatten, as the balance
sheet is expanded.
5.2. Did the B/S expansion produced yen depreciation?
A theoretical underpinning linking QE and the exchange rate is the portfolio
rebalance on the part of private sector investors who receive proceeds of selling
government bonds to the central bank. Presumption is that they would increase equities
holdings and foreign assets, leading to the currency depreciation and stock price increases.
In some theoretical work, just expanding the balance sheet (monetary base or
reserves) does not seem to matter for the economy, unless the expectation on the future
inflation rate path changes at the same time.13 However, typically theoretical work does
not have the exchange rate and the stock prices in their model.
As was shown in Figure 3, the yen has depreciated rapidly from the midNovember 2012 to mid-May 2013, while the QQE only started in April 4. Linking QQE
to yen depreciation would not be supported by any event analysis. There could be two
possible explanations that the QQE is indeed a factor behind the 20% yen depreciation.
First, since mid-November, the market became more and more convinced that Mr. Abewould force a change in monetary policy. The market has priced in most of what would
be announced in QQE. The fact that the yen depreciated and the stock prices rose
immediately after the QQE announcement shows that there was still a positive surprise—
the size and the scope of assets announced in QQE were more than anticipated at the time.
In that sense, anticipated QQE and a surprise in QQE were the driving force behind theyen depreciation and stock price increases.
However, the size of balance sheet (B/S) would increase gradually in the next
two years. So, is the B/S is correlated with the exchange rate without lags, it might notshow a strong correlation. With this caution in mind, let us examine a relationshipbetween the ratio of BOJ B/S to FRB B/S and the nominal yen/dollar exchange rate.
Figure 5 shows such a relationship.
<Figure 5 about here>
A casual look at the correlation between the two variables are high, between 1989
and 1995 (yen appreciation), between 2000 and 2003 (yen depreciation), between
2008Q4 and 2012 (yen appreciation, US QEs) and between end-2012 and 2014 (yendepreciation; Abenomics). In these cases, the expansion of the balance sheet resulted in
13

See for example, see Eggertsson and Woodford (2003) and Cúrdia and Woodford (2010).
23

the currency depreciation. The puzzle—that is, no or reverse correlation—exists for theyen depreciation period, without any movement in the B/S ratio, from 1995 to 1998 andthe yen appreciation period, despite BOJ QE from 2002 to 2005. The first case of puzzle
may be due to the Japanese banking crisis of 1997-98. The period of 2002-2005 may be
due to ineffective QE—not producing strong expectation of success—in Japan.
In order to explore the relationship between the relative B/S and the movementof the yen/dollar rate, the movement (log difference) of the yen is regressed on the B/S
growth (log difference) differential between Japan and the United States. In addition, the2-year government bond yield differential is added to the equation. The benchmark
specification is as follows:dYent    1dMBratiot   2 (iusja 2t )   3 InterUSDt   4QE 0 t   5 Abet   twhere dyen is the log difference of the yen per dollar: log(yen)-log(yen(t-1)); dusja2(t) is
the interest spread between the US 2-year rate, ius2(t), and the Japanese 2-year rate i2(t);InterUSD is the monthly total of the Japanese official intervention of buying US dollar,
selling the Japanese yen. The dummy variables for QE0 and Abenomics are added to see
whether either period had an impact on the yen movements.
The key variable of QE effect here is the change in the monetary base ratio.
dMBraito, that is the log difference of the monetary base ratio of Japan to US:log(Mbratio(t)-log(Mbratio(t-1), where MBratio is defined as the MBja to MBus. The
variable dMBratio can be also viewed as the difference in the growth rate of the MB ineach country, namely, {log(MBja(t)-MBja(t-1)) - log(MBus(t)-MBus(t-1))}. So, thevariable shows the difference in the speed of expansion in the two countries. The sample
period is from 1999m01 to 2014m03. Regression results are shown in Table 4.
<Table 4 about here>
The 2-year interest rate spread difference the two countries is often believed in
the market to be relevant to the yen/dollar movement. However, in this regression, the
US-Japan interest rate spread turned out to be not significant. Since the Japanese interest
rate was already quite low. This may explain that the US-Japan interest rate differential is
not statistically significant at all. The change in the MBratio tends to be statisticallysignificant. When the Bank of Japan expands the balance sheet faster than the US
counterpart, then the yen tends to depreciate. These results are consistent with the viewthat the balance sheet expansion has an exchange rate channel during the (2-year) interest
rate is already quite low.
The amount of intervention is also an important variable. Intervention by the
Ministry of Finance is found important in moving on the yen/dollar rate.14 Buying US
14This is consistent with research results with daily data of interventions. See Ito24

dollar by selling the Japanese yen is effective in generating the yen depreciation. Wheninterventions are unsterilized, then both the intervention and monetary base effects works
on the yen; while in the case of sterilized interventions, only the intervention effect canbe used.
The estimated coefficients are consistent with the following interpretation of theyen movements. The large amount of intervention in January 2003 to March 2004 can besaid to have prevented a sharp yen appreciation, which would have happened at the time.
A sudden expansion of the US monetary base after the collapse of the Lehman Brothers
in September 2008, with little QE-type action by the Bank of Japan at the time, resulted
in the sharp appreciation of the yen at the time. The high speed of the monetary base
expansion by the Bank of Japan under the QQE, announced in April 2014, is promisingin generating yen depreciation.
However, recall the explanation of the yen deprecation under the Abenomics had
started in mid-November 2012 (Figure 3). When the dummy variable for the Abenomics
period, 2012M12-2014m03, is added to the regression, which is found to be statisticallysignificant. A remarkable yen depreciation from December 2012 to May 2013 is morethan it can be explained by the change in MBratio. There was no intervention during the
Abenomics period.
The above results are consistent with the following view. A monetary base
expansion tends to cause yen depreciation. When Mr. Abe started a campaign that the
Bank of Japan would have to change in adopting a new policy to get out of deflation,market participants, albeit gradually, believed that the Bank of Japan would share thecommon goal of getting out of deflation with the government and monetary expansion
would be only credible monetary policy tool. Hence, what an Abenomics dummy variable
picks up in this regression is the expectation effect of policy change to come. Indeed, theBOJ under a new Governor met and went beyond the market expectation.
Some critics would point out possible endogeneity in the above regression. For
example, intervention is prompted when the yen moved in particular way. 15 Hence,
GMM is used to estimate the same specification. Although some results are not supported
in GMM, the monetary base expansion effect tends to be confirmed also in the GMM
estimation.
In sum, the relative monetary base growth rate is a variable that seems to be
influential in changing the exchange rate. Also both the Abenomics-talk and QQE action
had additional effects on the yen depreciation.
(2003, 2004b, 2007).
15 Ito and Yabu (2007) estimated such a policy reaction function.
25

5.3. Will QQE cause a shift of inflation expectation?
Getting out of the 15-year deflation has been a stated objective of the Abenomics.
The BOJ agreed to the 2 percent inflation targeting in January 2013. In March 2013,
Governor Kuroda was selected, and in the following month, he announced a new policyof expanding the balance sheet. Governor Kuroda was explicit about QQE will continue
until the 2% inflation rate is sustained. The BOJ MPM members’ projections, as of endApril 2014, showed that the inflation rate in the fiscal year 2015 would be 1.9% and fiscal
year 2016 would be 2.1%. The projection for 2015 as 1.9% was the same as the projection
one year earlier, the Outlook document of April 2013.
The Bank of Japan uses the core inflation rate, the change of CPI excluding
fresh food, as the inflation measure. The core inflation rate has risen from -0.4% in
April 2013 to +1.3% in March 2014. The BOJ’s projection is indeed realizing, so far.
The core inflation rate is shown as the blue line in Figure 6.
<Figure 6 about here>
Skeptics of the BOJ projections point out that the inflation rate acceleration has
been mainly influenced by an increase in energy-related prices due to large depreciationof the yen from mid-November 2012 to mid-May 2013, so that the inflation rate will
decline in the second half of 2014 due to the stable dollar/yen since mid-May 2013. A
counter-argument to the skeptics is that even the inflation rate without energy and food(nicknamed the “core-core” inflation rate, shown in the red line in Figure 6) has been
rising quickly. It rose from -0.5% to +0.6% in the April 2013-March 2014 period. The
prices of energy imports have risen fast with yen depreciation and increased demand forhigh-priced natural gas due to the problems at nuclear power plants. The fact that corecore inflation rate is also rising quickly shows that the inflation rate acceleration is broad
based, not just due to yen depreciation.
The inflation-linked government bond market in Japan has been shallow and thebreak-even rate implied by the yield differential between inflation-linkers and regularbonds is not reliable. There are two representative expectation surveys of inflation
expectation in Japan. The Cabinet Office (CAO) has conducted a monthly survey sinceApril 2004 on inflation expectation. The Bank of Japan has conducted a quarterly survey
since 2004. The CAO survey asks 8,400 households (with response rate of about twothirds) about their attitudes toward consumption. One of the questions is inflation
expectation. The question reads, “What do you think of the price levels of goods youpurchase frequently. Based on information you obtain from TV, newspaper, and othersources, how much do you imagine prices of goods you purchase frequently would move26

up (or down) in a year from now.” Since the question is about “frequently purchased”
goods, the coverage is different from Core CPI. The respondents would think of clothing,food, gasoline, and other every-day items, but not durables and semi-durables, likepersonal computers. It is not clear whether respondents think of service prices. Hence, itwould not be surprising if the inflation expectation of this survey shows some persistentbias. The BOJ survey explicitly includes the service prices. The question of prices isdefined as the “overall prices of goods and services that you purchase.”
Figure 7 shows the BOJ and CAO responses at t, compared to headline CPI andcore CPI inflation rates at t. Two features stand out. First, the expected inflation is always
above the then inflation rate. Second, the movement of inflation expectation, expressed
at t, seems to be following the actual inflation rate at t.The expectation error has to bemeasured against CPI of t+12, which is not shown here, but clearly not the forecast is not
close to CPI inflation rate of t+12.
<Figure 7 about here>
The CAO measure of inflation expectation had exceeded two percent from mid2007 to end-2008, and then from April 2013. Although it appears that the inflation
expectation has risen steadily since April 2013, the introduction of QQE, this result has
to be taken with a caution. The survey method was change in April from a direct interview
to a mail-back with prepaid envelop. The change of survey method and the QQE effectcannot be separated, unfortunately.
Next, we examine whether the expectation formation is influenced by the central
bank’s balance sheet changes. Two specifications are examined. The first expression isbased on the adaptive/extrapolative expectation formation:

 te   t 1    1 QQEt   2 ( t 2   t 1 )  3 GDPgapt 1   4 MBGPDPt 1  5 QE0
Coefficient β2 shows the weight on the past inflation rate, and the speed of adjustment
based on the past change in the inflation rate. In case of β2<0, the expectation formation
is said to be extrapolative. In either case, the expectation formation is assumed to be
backward-looking. The constant term represents the bias due to the deviation between the
CPI and what respondents think of price movements. The dummy variable of QQE, whichtakes the value of 1 after April 2014, includes both the effect of the QQE policy and theeffect of a change in survey method.
The second specification is based on the expectation revision formula based on
the current information:

 te   te1    1D2013m4   2 ( t   t 1 )  3 MBGDPt 1   4 QE0
27

The expected inflation rate is supposed to be revised with the arrival of information on
monetary base, the actual inflation rate. In April 2013, the dummy variable is added tocapture one time jump in the expected inflation rate due to the introduction of QQE andthe change in the survey method. D2013m4 takes the value of 1 in April and 0 in all otherperiods.
Results are shown in Table 5. In the adaptive/extrapolative expectation
assumption, the expectation formation was found to be extrapolative. That is, an
expectation is formed so that the recent trend in the actual inflation rate would continue
to the future. The monetary base is significant in one of the adaptive/extrapolative
specifications. The increase in monetary base has a positive impact on the inflation
expectation. However, monetary base is not significant in expectation adjustment
specification.
<Table 5 about here>
In sum, there is a non-conclusive evidence that expanding monetary base would
impact on inflation expectation, when it is assumed to be backward looking. There is alimitation on the use of this survey data. In the next section, we try to find implied
inflation expectation in the Phillips curve relationship.
5.4. Phillips Curve
The movements of inflation rate can be examined in the framework of thePhillips curve, a relationship between the inflation rate and the unemployment rate. The
Phillips curve states that when the unemployment rate higher (lower) than the natural rate,,.
u*, the prices tend to decline (increase, respectively) relative to inflation expectation,
The first term on the right hand side is the inflation expectation: t   e   (ut  u * )Figure 8 shows the plot of ( ,from 1971 to 2014. The inflation rate is the16headline inflation rate. It was well-known that the Phillips curve was almost vertical in
the first half of the 1970s. The inflation rate was very high (in the range of 20-25%) in
the wake of the first oil crisis.17 In order to lower the inflation rate, strong monetary
tightening was applied in 1974-75. The unemployment rate rose gradually above 2%, as
the inflation rate came down. This is a typical short-run Phillips curve reaction.
16

The consumption tax (VAT) was introduced in April 1989 at 3%; the tax rate was raised to 5% in
April 1997. The published inflation rate is adjusted down to eliminate the influences of the tax hikefor the graph.
17
For accounts of why the high inflation rate happened, see Ito (2006), Ito and Mishkin (2006) andIto (2013b).
28

<Figure 8 about here>
From mid-1970s to the end of 1980s, the unemployment rate was between 2%
and 3%, the inflation rate was between 0% and 10%. The short-run Phillips curve had avery steep slope. Then came a long stagnation and deflation. Between 1993 and 2014, thePhillips curve is almost flat. If combined, the Phillips curve from 1975-2014 exhibits theL-shape Phillips curve. This has been pointed out by many in the past. Now let us focus
on the period after 1993.
Figures 9 and 10 shows the Phillips curve using the core inflation rate (Figure 9)
and the core-core inflation rate (Figure 10) for the period of March 1998 to March 2014.
The inflation rate is less volatile when the core-core definition is used.
<Figures 9 and 10>
Since we do not know a priori the inflation expectation or the natural rate ofunemployment, we cannot estimate the equation. Instead, given the value of u*, thenatural rate of unemployment,  e can estimated jointly with the slope β.
Using the core inflation rate, left panel of Table 6, the slope got steeper in thelatter half of 20-year stagnation, namely 2003-2012, from the earlier half, 1993-2003. The
slope is influenced by the high energy price period of 2007-08. After the Abenomics
started in November 2012, the slope of the Phillips curve got even steeper.
<Table 6 about here>
There are not a definitive estimate of the natural unemployment, so four cases
are presented: 2.0, 2.5, 3.0 and 3.5%. Suppose that the natural unemployment rate is 3.5%,
then the current actual unemployment rate (as of March 2014) is almost there. Hence, allit takes for the BOJ to achieve the 2% inflation target (in core inflation) is to shift the
inflation expectation by 0.3 percentage point from 1.7% to 2.0%. If the natural
unemployment rate is 3.0%, then implied inflation expectation is 3.0%. The expectation
already exceed the target. This is counter-intuitive.
In order to eliminate the effects of energy prices, which adds short-run volatility,
the same regressions are used with the core-core inflation rate. The results are shown in
the right-panel of Table 4. The slope of the Phillips curve got flatter from the first half tothe second half of the stagnation; the inferred expected inflation rate became also much
lower in the second from the first half of the stagnation, for each case of the natural
unemployment rate. This is consistent with the conventional wisdom that deflationary
expectation had entrenched as the deflation period became longer and longer. With theintroduction of Abenomics, the slope became steeper and the implied expected inflation
rate got higher than the preceding period. In the case of the national unemployment rate29

being the 3.5%, the expected inflation rate is 1.08%, short of the inflation target rate of
2.0 by about half of the amount.
In sum, the core inflation rate has been volatile due to energy price movements.
It would be better to use the core-core inflation rate in the Phillips curve regressions andpossibly as a variable in the BOJ monetary policy decision. There is an evidence that after
the beginning of Abenomics and QQE, the slope of the Phillips curve became steeper andthe expected inflation rate higher. However, a strong caution should be applied to theseresults, due to a short sample for the Abenomics period.
6. Exit
Although “We are all QE-sians Now,” an exit from QE has to be found, when economic
conditions improve and the inflation rate approaches the target (of 2 percent). The Bankof Japan exited from QE0 (2001-2006), with successfully shrinking the size of the balance
sheet to the pre-QE0 level in about one year before raising the policy rate. The shrinkage
of excess reserves from more than 30 trillion yen to less than 10 trillion in was possible
because the BOJ purchased only short maturity bonds (with remaining maturities lessthan 3 years). In that sense, QE0 did not fully take advantage of the channel of long bondpurchases. Hence, the exit was relatively easy. The policy interest rate was raised only
after theThis time, the BOJ is purchasing long bonds with average maturity of 7 years.
Hence shrinking the balance sheet will take more time. Under QE0, excess reserves were
not remunerated, however under QQE, excess reserves are remunerated, so it is possible
to raise the policy interest rate (as well as the interest rate for excess reserves in the current
account of BOJ), without shrinking the balance sheet. The possibility of raising the policy
rate without shrinking the balance sheet is the same at the FRB.
As interest rates start to rise, the central banks with QE will experience losses in
the long bond portfolio (with fixed rate coupons) and larger cash flow payments on theexcess reserves. The profits will be lower and the capital may be eroded. The Bank ofJapan raised the profit retention from 5% to 20% in preparation of such events. The FRB
does not retain any profits. The Bank of England had an agreement with the Exchequer
before the start of QE for the indemnity for the possible loss from long bond portfolios
under QE.
7. Concluding Remarks
This paper reviews the experiences of QE (broadly defined and narrowly
defined) of the four major central banks—BOJ, FRB, BOE, and ECB. In the literature,30

there are controversies over effectiveness of their QEs. Many papers have been alreadywritten on the experiences of FRB QEs. This paper focuses on the BOJ experiences with
QE and QQE. It was shown that BOJ’s QQE has been effective in producing yen
depreciation due to the expansion of the balance sheet, producing a steeper slope in thePhillips curve, and the higher inflation expectation.
The three channels of BOJ’s QE transmission were empirically examined, withmonthly data since January 1999. First, the long-term interest rate tends to be lower andthe yield curve tends to be flattened when the monetary base expands faster than nominal
GDP. Second, the yen vis-à-vis the US dollar tends to depreciate when the Japanesemonetary base expands faster than the US monetary base. Third, an impact of monetarybase expansion on the inflation expectation is not confirmed. Findings are consistent witha view that QE is effective, by lowering the long-term interest rate and the currency
depreciation.
The shift by 1 percentage point may be needed to achieve the target level of 2%
in inflation as of March 2014, provided that the natural unemployment rate is 3.5%. Thechange in the yen/dollar rate was estimated to move with the relative monetary basegrowth rates. If the BOJ’s balance sheet was expanding faster than the FRB’s, then the
yen vis-à-vis the US dollar tends to depreciate.

31

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35

Table 1. Unconventional Measures (broadly-defined QE)
QE broadly-defined = unconventional monetary policy

CE- type

B OJ

FRB

Equity pu rchase (2002/0 9)

CE (2008 /12)

ABS purc hase (2 003/04 )Operation twist (2011/09 )QE- type

QE (2001 -06)

B/S main tenance (2010/ 08)
QE-2( 20 10/11)

CE & QE

Compreh ensive Easing (2 010/ QE3 (201 2/09)
QQE (20 13/04)

Inflation Targeting

2% (2013/01)

2% (2012/01)

ECB
Covered bonds(2 009/06)
SMP (201 0/05)
LTROs (2 011/12)
OMT (201 2/09)

QE-1 (2 009/03 )QE-2 (2 011/10 )QE-3 (2 012/07 )Below but close to 2%

Notes: Authors’ creation
Sources: Various pages of the four central banks

36

BOE

2.5% (1992) -> 2%

Table 2. The balance sheet impact on the JGB 10-year bond yield
LHS: i10(t)Sample: 1999m01-2014m03;
Estimated by GMM;αi10(t--1)

u(t-1)π (t-1)i(t)MBGDP(t)QE0

Abe

Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.

Adjusted R-squared
Mean dependent var.
S.D. dependent var.

0.565 **
0.236
2.392
0.018
0.864 ***
0.064
13.4080.000-0.053 *0.031-1.7330.085-0.1300.080-1.6190.107-0.066 **0.030-2.2190.028

0.89591.32250.35550.623 **
0.254
2.458
0.015
0.859 ***
0.064
13.3940.000-0.065 *0.038-1.7080.089-0.0130.015-0.8690.386-0.1200.078-1.5490.123-0.066 **0.030-2.2230.028

0.89541.32250.35550.307 *
0.162
1.890
0.060
0.908 ***
0.049
18.3710.000-0.0400.029-1.3990.163-0.0640.090-0.7110.478

0.441 **
0.213
2.069
0.040
0.895 ***
0.051
17.5650.000-0.068 *0.040-1.692
0.092-0.0240.015-1.5730.117-0.0400.091-0.443
0.658

0.023
0.024
0.954
0.341
-0.082 *0.047-1.7360.084
0.89491.32250.3555370.754 **
0.298
2.530
0.012
0.839 ***
0.074
11.3470.000-0.087 **0.036-2.396
0.018

0.032
0.025
1.287
0.200
-0.088 *0.049-1.7950.074-0.149 *0.086-1.7320.085-0.066 *0.035-1.888
0.061
0.026
0.025
1.037
0.301
-0.0530.049-1.0860.279

0.888 ***
0.315
2.817
0.005
0.828 ***
0.075
11.0030.000-0.117 ***0.042-2.7730.006-0.029 *0.015-1.8740.063-0.1140.088-1.3000.195-0.063 *0.036-1.763
0.080
0.037
0.026
1.418
0.158
-0.0610.054-1.1290.260

0.8951
1.32250.35550.89601.32250.35550.89571.32250.3555

Table 3. Impact on the yield curve (10yr yield minus 2yr yield)
LHS: i10(t) – i2(t)Sample: 1999m01-2014m03;
Estimated by GMM;αi10(t-1)-i2(t-1)

ius10(t-1)-ius2(t-1)

u(t-1)

i(t)MBGDP(t)QE0(t)

Abe(t)

Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.

Adjusted R-squared
Mean dependent var.
S.D. dependent var.

Eq. 1

Eq 2

Eq 3

Eq 4

Eq 5

0.194
0.136
1.420
0.157
0.876 ***
0.067
13.000
0.000

0.064
0.096
0.671
0.503
0.903 ***
0.060
15.118
0.000

0.246
0.152
1.618
0.108
0.860 ***
0.077
11.160
0.000

0.002
0.022
0.108
0.914
-0.0990.067-1.4850.139-0.034 *0.019-1.787
0.076

0.007
0.021
0.320
0.750
-0.0220.054-0.403
0.687

0.037
0.104
0.355
0.723
0.889 ***
0.071
12.4390.000-0.0070.009-0.765
0.445
0.018
0.029
0.603
0.547
-0.0150.054-0.284
0.777

0.020
0.020
0.998
0.320
-0.0360.031-1.1690.244-0.0060.021-0.2950.768-0.0910.071-1.2740.204-0.036 *0.021-1.698
0.091
0.025
0.022
1.143
0.254
-0.0060.029-0.1970.844

0.326 *
0.181
1.805
0.073
0.876 ***
0.067
13.053
0.000
0.011
0.011
0.944
0.346
-0.021
0.037-0.5750.566-0.144 *0.073-1.9660.051-0.051 **0.022-2.3270.021

0.87311.03220.26190.87511.03220.26190.87531.03220.261938

0.87591.03220.2619

Eq 6

0.022
0.021
1.020
0.309
-0.0290.029-1.001
0.318

0.405 *
0.206
1.969
0.051
0.861 ***
0.077
11.179
0.000
0.013
0.011
1.170
0.243
-0.0340.035-0.9820.327-0.144 *0.082-1.7540.081-0.058 **0.027-2.117
0.036
0.025
0.021
1.176
0.241
0.000
0.029
-0.0010.999

0.87231.03220.26190.87581.03220.2619

Table 4. Balance Sheet Impact on the yen
Sample period: 1999m01 – 2014m03
Estimated by either OLS or GMM
LHS: dyen(t) = log(yen(t)) – log(yen(t-1))OLSαDMBRATIO

iusja2(t)InterUSD

QE0

Abe

Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.
Coefficient
Std. Error
t-Statistic
Prob.

Adjusted R-squared
Durbin-Watson stat
Mean dependent var.
S.D. dependent var.

GMM

OLS

GMM

OLS

GMM

-0.001
0.002-0.6280.531
0.170 ***
0.047
3.619
0.000

0.002
0.004
0.653
0.514
0.447 ***
0.156
2.871
0.005

0.001
0.003
0.262
0.793
0.187 ***
0.047
3.990
0.000
0.000
0.001
0.262
0.793
-3.52E-07 **1.41E-07-2.502
0.013

0.027
0.051
0.536
0.593
0.457
0.344
1.330
0.186
-0.0070.015-0.4760.635-9.05E-06
0.0000126-0.7190.474-0.0040.003-1.3180.189
0.166 ***
0.047
3.534
0.001
0.001
0.001
1.213
0.227
-3.2E-07 **1.4E-07-2.219
0.028
0.003
0.004
0.815
0.416
0.018 ***
0.006
2.871
0.005

0.001
0.006
0.214
0.831
0.433 **
0.172
2.512
0.013
0.000
0.001
0.314
0.754
-5.63E-07
6.16E-07-0.913
0.362
0.000
0.004
0.020
0.984
0.010
0.012
0.845
0.399

-3.4E-07 **1.4E-07-2.411
0.017
0.004
0.004
0.952
0.342
0.016 ***
0.006
2.606
0.010

-5.96E-07
5.82E-07-1.024
0.307
0.000
0.004
0.053
0.958
0.009
0.011
0.818
0.415

0.0902
1.7275-0.00080.0240-10.0228
1.9904-0.0004
0.02410.1214
1.7855-0.00080.0240-0.0530
1.7936-0.0006
0.02390.11911.7789-0.00080.0240-0.0698
1.7890-0.0006
0.023939

Table 5. Expectation Formation
LHS
C

QQE

π(t-2)－ π(t-1)

GDPGAP(-1)

MBGDP(-1)

QE0

Adjusted R-squared
Mean Dep var
S.D. Dep var

Coefficientpe(t)-pi(t-1)
GMM
0.548

pe(t)-p(t-1)
GMM
0.051

Std. Error

0.739

0.791

Std. Error

0.069

0.070

t-Statistic

0.741

0.065

t-Statistic-0.124-0.089

Prob.

0.460

0.948

Prob.

0.902

0.930

Coefficient-0.633-1.485 *Coefficient

0.451 **

0.450 **C

DUM2013M4

Coefficientpe(t)-pe(t-1)
OLS-0.009pe(t)-pe(t-1)
OLS-0.006

Std. Error

0.576

0.851

Std. Error

0.183

0.184

t-Statistic-1.098-1.744t-Statistic

2.459

2.439

Prob.

0.274

0.084

Prob.

0.015

0.016

Coefficient-2.043 ***-2.755 **Coefficient

0.192 ***

0.192 ***

π(t)－ π(t-1)

Std. Error

0.691

1.349

Std. Error

0.052

0.053

t-Statistic-2.955-2.042t-Statistic

3.664

3.648

Prob.

0.004

0.043

Prob.

0.000

0.000

Coefficient-0.114

Coefficient

0.009

0.009

MBGDP(-1)

Std. Error

0.079

Std. Error

0.030

0.030

t-Statistic-1.451t-Statistic

0.314

0.302

Prob.

0.150

Prob.

0.754

0.763

Coefficient

0.401

0.771 **

Std. Error

0.380

0.387

Std. Error

0.042

t-Statistic

1.054

1.989

t-Statistic-0.199

Prob.

0.294

0.049

Prob.

0.843

Coefficient-0.582 **-0.734 ***QE0

Coefficient-0.008Std. Error

0.231

0.265

Adjusted R-sq.

0.134

0.127

t-StatisticProb.

-2.5170.013-2.7760.006

Durbin-Watson
Mean Dep Var
S.D. dependent Var

1.335
0.020
0.195

1.335

-0.9161.523
0.652-2.01740

Table 6. The Phillips Curve and implied inflation expectation

Core inflation rateCore-Core inflation rate

Sample: 1993M03 2003M02

Sample: 1993M03 2003M02

β

β

=

-0.676=-0.776

u* =

2.0

2.5

3.0

3.5

u* =

2.0

2.5

3.0

3.5

πe =

1.51

1.17

0.83

0.49

πe =

1.83

1.45

1.06

0.67

Sample: 2003M03 2012M10

Sample: 2003M03 2012M10

β

β

=

-1.144=-0.450

u* =

2.0

2.5

3.0

3.5

u* =

2.0

2.5

3.0

3.5

πe =

2.75

2.18

1.61

1.03

πe =

0.60

0.37

0.15

-0.08

Sample: 2012M11 2014M03

Sample: 2012M11 2014M03

β

β

=

-2.615=-2.411

u* =

2.0

2.5

3.0

3.5

u* =

2.0

2.5

3.0

3.5

πe =

5.65

4.34

3.04

1.73

πe =

4.70

3.49

2.29

1.08

41

Figure 1. Balance Sheet of four major central banks.

Notes: The amount of the balance sheet of each central bank in January 2007 is normalized as 100 and values of BOJ for April
2014 to March 2015 is a projection by the Bank of Japan.

42

Figure 2. Transmission Mechanism
Transmission Mechanism
Expand Bank
Lending

Forward Guidance
Channel 1
Purchase of Long
Bonds

LoweringLong rates

Housing Investment
Capital investment

I

Net Exports Increase

NEX

Channel 2

QE = expand B/SChange asset priceexpectation andportfolio rebalance

Depreciationof thecurrency

Exports
Increase

Output Growth(Y)
Imported
Inflation
Inflation

Stock Price
Increases

Wealth Effect

C and I

Channel 3
Wage
negotiation

Inflation targeting
Inflation Expectation

CE

Purchase Assets of
Dysfunctional Markets

RestoreMarkets

Source: Author's creation

43

Figure 3. The yen-dollar exchange rate, July 1, 2012 – April 30, 201444

Figure 4. The Nikkei 225, July 1, 2012 – April 30, 201445

Figure 5. B/S and the exchange rate

46

Figure 6. Inflation Rates (Core and Core-core), Japan47

Figure 7. Inflation expectation (CAO survey) and actual inflation Rate

Data source: Bank of Japan; Cabinet Office, the Japanese government; Government Statistics Service
Note: Author’s creation48

Figure 8. Phillips Curve, (unemployment; headline inflation) 1971M1 - 2014M3

49

Figure 9. Phillips Curve (unemployment rate, core inflation rate), 1993M3 – 2014M3

50

Figure 10. Phillips Curve (unemployment rate, core core inflation rate), 1993M3 – 2014M3

51