capital taxation and government debt policy with public discounting abstract this paper characterizes capital taxation and public debt policy in a quantitative macroeconomic model with an impatient government and uncertainty the government has access to linear taxes on capital and labor and to non state contingent bonds government impatience generates positive and empirically realistic long run levels of both capital taxes and public debt prior predictive analysis shows that the simulated model matches the distribution of both variables in a sample of 42 countries alongside other statistics the paper then presents econometric evidence that countries with higher political instability used as an approximation of unobservable public discount rates have both higher capital taxes and debt

inflation interest rates and welfare this paper develops a simple general equilibrium model of a monetary economy with a capital market money demand arises from a cash in advance constraint rather than from any direct role in the utility function and uncertainty gives rise to a meaningful portfolio choice between money and bonds we show that velocity is increasing in the rate of inflation and that the optimal monetary policy is that which maximizes real balances we also show that the real rate of interest is not invariant to monetary policy inflation lowers the real rate

managing the maturity structure of government debt abstract it is known that a government can implement the optimal complete market ramsey allocations by issuing non contingent bonds of different maturities the implied optimal maturity structure is time and state invariant i e it is not actively managed i construct a model where the ramsey allocations can be implemented with active management of the maturity structure in a numerical example that reflects the time series properties of the british government s expenditure during the 18th century its historic pattern of maturity management is replicated

a tale of two communities explaining deforestation in mexico summary deforestation policies in mexico need to recognize heterogeneity in community s management schemes in communities that extract wood from the forest for profit forestry projects generate funds whose investment in public goods increases the value of standing forest to those not receiving direct dividends from the projects increases in such investment help decrease deforestation in communities with other livelihoods deforestation decreases with the community s ability to form a coalition that cooperates in reducing forest clearing this is easier in smaller communities with more experienced leaders analysis using data collected in 2002 combined with satellite imagery verifies the models predictions

government debt management the long and the short of it standard optimal debt management dm models prescribe a dominant role for long bonds and advocate against issuing short bonds they require very large positions in order to complete markets and assume each period that governments repurchase all outstanding bonds and reissue r r new ones these features of dm are inconsistent with u s data we introduce incomplete markets via small transaction costs which serves to make optimal dm more closely resemble the data r r are negligible short bond issuance substantial and persistent and short and long bonds positively co vary intuitively long bonds help smooth taxes over states and short bonds over time solving incomplete market models with multiple assets is challenging so a further contribution of this article is introducing a novel computational method to find global solutions

optimal fiscal policy in a business cycle model this paper develops the quantitative implications of optimal fiscal policy in a business cycle model in a stationary equilibrium the ex ante tax rate on capital income is approximately zero there is an equivalence class of ex post capital income tax rates and bond policies that support a given allocation within this class the optimal ex post capital tax rates can range from close to independently and identically distributed to close to a random walk the tax rate on labor income fluctuates very little and inherits the persistence properties of the exogenous shocks thus there is no presumption that optimal labor tax rates follow a random walk most of the welfare gains realized by switching from a tax system like that of the united states to the ramsey system come from an initial period of high taxation on capital income

optimal financial market integration and security design 1 we study 2 period pure exchange capital asset pricing model capm economies with incomplete financial markets and restricted participation we characterize the optimal financial market structure and efficient innovations consisting of both the introduction of new assets and the integration of segmented markets welfare gains from innovations are maximal when the endowments of affected agents are negatively correlated uncoordinated innovations lead to efficient market structures if all assets have identical participation structure or the markets being integrated trade identical assets however coordination failure in the introduction of new assets may result when assets have participation structures that overlap only partially

optimal fiscal policy with recursive preferences i study the implications of recursive utility a popular preference specification in macro finance for the design of optimal fiscal policy standard ramsey tax smoothing prescriptions are substantially altered the planner over insures by taxing less in bad times and more in good times mitigating the effects of shocks at the intertemporal margin there is a novel incentive for introducing distortions that can lead to an ex ante capital subsidy overall optimal policy calls for a much stronger use of debt returns as a fiscal absorber leading to the conclusion that actual fiscal policy is even worse than we thought

redistributive taxation in a simple perfect foresight model abstract we investigate the redistributive potential of capital taxation in an intertemporal maximizing model of capital formation first even unanticipated redistributive capital taxation is severely limited in its effectiveness since it depresses wages second under any convergent redistributive tax policy which maximizes a paretian social objective the capital income tax will converge to zero independent of the factor supply elasticities these results are independent of workers holdings of capital

tax smoothing in a business cycle model with capital skill complementarity this paper undertakes a normative investigation of the quantitative properties of optimal tax smoothing in a business cycle model with state contingent debt capital skill complementarity and endogenous skill acquisition under technology and public expenditure shocks we find that skilled and unskilled labour tax smoothing maintain quantitatively under externalities and exogenous shocks in skill acquisition as well as when the relative skill supply is exogenously determined we further find that the government finds it optimal to reduce both the size of the wedge between the marginal rates of substitution and transformation in skill attainment in the long run and the standard deviation of this wedge over the business cycle this is achieved by subsidising skill creation and taxing both types of labour income

optimal taxation without state contingent debt in an economy studied by lucas and stokey tax rates inherit the serial correlation structure of government expenditures belying barro s earlier result that taxes should be a random walk for any stochastic process of government expenditures to recover a version of barro s random walk tax smoothing outcome we modify lucas and stokey s economy to permit only risk free debt having only risk free debt confronts the ramsey planner with additional constraints on equilibrium allocations beyond one imposed by lucas and stokey s assumption of complete markets the ramsey outcome blends features of barro s model with lucas and stokey s in our model the contemporaneous effects of exogenous government expenditures on the government deficit and taxes resemble those in lucas and stokey s model but incomplete markets put a near unit root component into government debt and taxes an outcome like barro s however we show that without ad hoc limits on the government s asset holdings outcomes can diverge in importa

optimal maturity of government debt without state contingent bonds abstract this paper shows that state contingent debt can be synthetically constructed using non contingent debt of different maturities a main policy implication of this principle is that the ramsey allocation with complete markets can be sustained with non contingent debt only by properly managing its maturity structure the numerical experiments however suggest that this policy implication ought to be taken with care we find that the debt positions that sustain the ramsey allocation are very high on the order of a few hundred times total gdp for a very simple four state economy and increasing in the number of states in addition they are very sensitive to small variations in the parameters of the model

budget deficits and the current account an intertemporal disequilibrium approach the objective of the present paper is to develop an intertemporal disequilibrium model of a monetary economy to explain the effects of fiscal policy on the current account we wish to emphasize the role of aggregate demand determined output fluctuations and flexible exchange rates within a microtheoretic optimizing framework furthermore the differing effects of monetary versus non monetary i e tax or bond finance of government expenditures are considered

equilibrium capital taxation in open economies under commitment abstract this paper analyzes equilibrium capital taxation in open economies with strategic interaction in a neo classical growth model under perfect commitment i show that non cooperative capital taxes are zero in the long run for a large open economy thereby generalizing the result previously established only for the special cases of a closed and a small open economy this does not represent a race to the bottom though since the result is independent of the degree of capital mobility the number of countries or a country s size relative to the rest of the world moreover when countries cooperate they still set capital taxes to zero in the long run these outcomes are robust to different equilibrium specifications the inclusion of endogenous government spending and heterogeneous agents and non linear labor income taxation governments find it optimal to implement the efficient capital allocation in the long run both in a closed and an open economy this trumps incentives to tax foreigners domestic capital holdings by raising capital taxes and attracting capital from abroad by lowering capital taxes

liquidity exchange rates and business cycles abstract this paper presents a two country two good two currency model to study the role of liquidity effects in exchange rate determination and the international transmission of economic fluctuations the model provides an exchange rate equation which is different from the simple purchasing powerparity law of exchange rate determination both monetary injections and real disturbances can lead to exchange rate fluctuations and comovements of interest rates prices and output of the two economies whether the covariances of variables in the two countries are positive negative or zero depends critically upon the substitutability of the two consumption goods in consumers preferences

floating exchange rates with liquidity constraints in financial markets abstract we construct a two country model in which there exist cash in advance constraints in commodity as well as in asset markets the seller s currency is used for transactions in commodity markets and the lender s money is used for transactions in the bond markets the exchange rate equation that emerges from this structure has a new feature it exhibits a bias towards depreciation of the borrowers currency we describe the equilibrium dynamics of this type of a world economy and show that it may exhibit cyclical movements

optimal fiscal and monetary policy in an economy without capital abstract this paper is concerned with the structure and time consistency of optimal fiscal and monetary policy in an economy without capital in a dynamic context optimal taxation means distributing tax distortions over time in a welfare maximizing way for a barter economy our main finding is that with debt commitments of sufficiently rich maturity structure an optimal policy if one exists is time consistent in a monetary economy the idea of optimal taxation must be broadened to include an inflation tax and we find that time consistency does not carry over an optimal inflation tax requires commitment by rules in a sense that has no counterpart in the dynamic theory of ordinary excise taxes the reason time consistency fails in a monetary economy is that nominal assets should from a welfare maximizing point of view always be taxed away via an immediate inflation in a kind of capital levy this emerges as a new possibility when money is introduced into an economy without capital

optimal fiscal and monetary policy equivalence results in this article we analyze the implications of price setting restrictions for the conduct of cyclical fiscal and monetary policy we consider standard monetary economies that differ in the price setting restrictions imposed on the firms we show that independently of the degree or type of price stickiness it is possible to implement the same efficient set of allocations and that each allocation in that set is implemented with policies that are also independent of the price stickiness in this sense environments with different price setting restrictions are equivalent

endogenous real exchange rate fluctuations in an optimizing open economy model abstract this paper constructs a simple intertemporal model of a small open economy inhabited by forward looking agents in which endogenous fluctuations in the real exchange rate can arise in equilibrium i e fluctuations that are not linked to movements in economic fundamentals the key condition for the main results is the assumption that the marshall lerner condition does not hold i e that the country s exports and imports are inelastic to its real exchange rate it is shown that given that the marshall lerner condition fails there exist periodic equilibria and or stationary sunspot equilibria in the neighborhood of the stationary state

optimal fiscal policy in the neoclassical growth model revisited this paper studies optimal taxation in a version of the neoclassical growth model in which investment becomes productive within the period thereby making the supply of capital elastic in the short run because taxing capital is distortionary in the short run the government s ability desire to raise revenues through capital income taxation in the initial period or when the economy is hit with a bad shock is greatly curtailed our timing assumption also leads to a tractable ramsey problem without state contingent debt which can give rise to debt financed budget deficits during recessions

optimal fiscal and monetary policy with sticky prices in this paper i consider the role of state contingent inflation as a fiscal shock absorber in an economy with nominal rigidities i study the ramsey equilibrium in a monetary model with distortionary taxation nominal non state contingent debt and sticky prices with sticky prices the ramsey planner must balance the shock absorbing benefits of state contingent inflation against the associated resource misallocation costs for government spending processes resembling post war experience introducing sticky prices generates striking departures in optimal policy from the case with flexible prices for even small degrees of price rigidity optimal policy displays very little volatility in inflation tax rates display greater volatility compared to the model with flexible prices with sticky prices tax rates and real government debt exhibit behavior similar to a random walk for government spending processes resembling periods of intermittent war and peace optimal policy displays extreme inflation volatility even when the degree of price rigidity is large as the variability in government spending increases smoothing tax distortions across states of nature becomes increasingly important and the shock absorber role of inflation is accentuated

myopic governments and welfare enhancing debt limits abstract this paper studies welfare effects of a soft borrowing constraint on sovereign debt the constraint is modeled as a proportional fine per unit of debt in excess of a specified reference value resembling features of the stability and growth pact sovereign debt is the result of myopic fiscal policy it reduces welfare in the absence of lump sum taxes the paper shows that the borrowing constraint enhances welfare by reducing long run debt in an economy calibrated to a generic oecd country the maximum attainable welfare gain of debt consolidation which is induced by imposing the optimally parameterized constraint amounts to 0 5 in terms of consumption the short run welfare costs of the constraint which arise from restricting the use of debt to smooth taxes are quantitatively negligible

optimal time consistent government debt maturity this paper develops a model of optimal debt maturity in which the government cannot issue statecontingent debt as the literature has established if the government can perfectly commit to fiscal policy it fully insulates the economy against government spending shocks by purchasing short term assets and issuing long term debt these positions are quantitatively very large relative to gdp and do not need to be actively managed by the government our main result is that these conclusions are not robust when lack of commitment is introduced under lack of commitment large and tilted debt positions are very expensive to finance ex ante since they ex post exacerbate the government s problem stemming from a lack of commitment in contrast a flat maturity structure minimizes the cost entailed by a lack of commitment though this structure also limits the ability to insure against shocks and increases the volatility of fiscal policy distortions we show that the optimal time consistent maturity structure is nearly flat because reducing average borrowing costs is quantitatively more important for welfare than reducing fiscal policy volatility thus under lack of commitment the government actively manages its debt positions and can approximate optimal policy by confining its debt instruments to consols

public debt in economies with heterogeneous agents abstract we study public debt in competitive equilibria in which a government chooses transfers and taxes optimally and in addition decides how thoroughly to enforce debt contracts if the government enforces perfectly asset inequality is determined in an optimum competitive equilibrium but the level of government debt is not welfare increases if private debt contracts are not enforced borrowing frictions let the government gather monopoly rents that come from issuing public debt without facing competing private borrowers regardless of whether the government chooses to enforce private debt contracts the level of initial government debt does not affect an optimal allocation

fiscal policy and debt management with incomplete markets a ramsey planner chooses a distorting tax on labor and manages a portfolio of securities in an economy with incomplete markets we develop a method that uses second order approximations of ramsey policies to obtain formulas for conditional and unconditional moments of government debt and taxes that include means and variances of the invariant distribution as well as speeds of mean reversion the asymptotic mean of the planner s portfolio minimizes a measure of fiscal risk we obtain analytic expressions that approximate moments of the invariant distribution and apply them to data on a primary government deficit aggregate consumption and returns on traded securities for u s data we find that the optimal target debt level is negative but close to zero the invariant distribution of debt is very dispersed and mean reversion is slow

how does dollarization affect real volatility and country risk this study gives a non traditional framework for the evaluation of the convenience of an asymmetric monetary association such as dollarization from the point of view of the country that gives up its monetary sovereignty in the analytical part we discuss the relationship between nominal volatility real volatility and country risk given the social loss function of the policymaker we determine the necessary conditions for dollarization to improve social welfare with this in mind we concentrate in the analysis of two main aspects 1 the degree of synchronization existing between the cycle of the leader and associated country and 2 the effect and relative importance of the different channels the trade and financial channels that transmit the shocks from the central country the united states in the empirical part we perform an application of our analytical framework to the case of argentina to estimate the synchronization of the business cycles we use the coefficient of cyclical correlation calculated for four different methodologies of de trending the effect and relative importance of the financial channel and the trade channel were extracted from the impulse response functions and variance decompositions of a vector error correction model vecm we analyze the stability of the results altering the order of the variables re estimating the model with rolling sub samples and modifying the deterministic component in the error correction mechanism as a general result dollarization in argentina would not only reduce the risk of devaluation but also reduce the real volatility of the economy and so the country risk for that reason from the financial point of view the advantages of dollarization will depend on how much society values the alternative of keeping open the possibility of adjusting to extraordinary shocks with the exchange rate parity

segmented asset markets and optimal exchange rate regimes abstract this paper revisits the issue of the optimal exchange rate regime in a flexible price environment the key innovation is that we analyze this question in the context of environments where only a fraction of agents participate in asset market transactions i e asset markets are segmented under this friction alternative exchange rate regimes have different implications for real allocations in the economy in the context of this environment we show that flexible exchange rates are optimal under monetary shocks and fixed exchange rates are optimal under real shocks

capital taxation and ownership when markets are incomplete this paper is a normative investigation of the properties of optimal capital taxation in the neoclassical growth model with aggregate shocks and incomplete markets the model features a representative agent economy with linear taxes on labor and capital i first allow the government to trade only a real risk free bond optimal policy has the following features labor taxes fluctuate very little capital taxes are volatile and feature a positive negative spike after a negative positive shock to the government budget and capital taxes average to roughly zero across periods i then consider the implications of allowing the government to trade capital

real transfers in fixed exchange rate systems and the international adjustment mechanism abstract fixed exchange rates can be maintained by different types of stabilization schemes this paper takes a look at some alternative institutional settings and shows that there is an inherent redistribution mechanism in some of them that will influence the world allocation of consumption an examination of the global adjustment to monetary disturbances illustrates some interesting implications of the institutional differences between alternative systems the results suggest that the description of the international adjustment mechanism under fixed exchange rates given by the monetary approach to the balance of payments is valid only under quite restrictive assumptions

optimal capital income taxation in a small open economy abstract this paper considers a stochastic small open economy with a financial asymmetry between the households and the government in this setting it is optimal not to tax capital income beyond the initial period this is in contrast to the existing results for stochastic closed economies

trade in nominal assets monetary policy and price level and exchange rate risk in a previous paper trade in risky assets i have analyzed the pattern of international trade in risky real assets between barter economies relying on the law of comparative advantage and using autarky asset price differences to predict the pattern of asset trade in this paper the analysis is extended to international trade in nominal assets assets with returns paid in currencies between monetary economies the risk chracteristics of real returns on nominal assets depend on price level and exchange rate risk and therefore on monetary policy it is examined how different combinations of monetary policies and exchange rate regimes affect nominal assets return risk characteristics their autarky perices and hence their trade pattern when countries differ with respect to their outputs or their attitudes towards risk when world asset markets are incomplete different monetary policies and exchange rate regimes have dramatic effects on risk characteristics of home and foreign currency bonds and on the trade pattern in these assets as well as on aggregate capital and current accounts

optimal taxation of capital income in general equilibrium with infinite lives this paper analyzes the optimal tax on capital income in general equilibrium models of the second best agents have infinite lives and utility functions which are extensions from the koopmans form the population is heterogeneous the important property of the models is the equality between the social and the private discount rates in the long run i find that the optimal tax rate is zero in the long run for a special case of additively separable utility functions i then determine the tax rates along the dynamic path and conditions that are sufficient for the local stability of the steady state

intertemporal distortions in the second best we consider a very general class of public nance problems that encompasses ramsey models of optimal taxation as well as economies with limited commitment private information and political economy frictions we identify a su cient condition to rule out permanent intertemporal distortions at the optimum if there exists an admissible allocation that converges to the rst best steady state then all intertemporal distortions are temporary in the second best we analyze a series of applications to illustrate the signi cance of this result

optimal fiscal and monetary policy under sticky prices this paper studies optimal fiscal and monetary policy under sticky product prices the theoretical framework is a stochastic production economy without capital the government finances an exogenous stream of purchases by levying distortionary income taxes printing money and issuing one period nominally risk free bonds the main findings of the paper are first for a miniscule degree of price stickiness i e many times below available empirical estimates the optimal volatility of inflation is near zero this result stands in stark contrast with the high volatility of inflation implied by the ramsey allocation when prices are flexible the finding is in line with a recent body of work on optimal monetary policy under nominal rigidities that ignores the role of optimal fiscal policy second even small deviations from full price flexibility induce near random walk behavior in government debt and tax rates third sluggish price adjustment raises the average nominal interest rate above the one called for by the friedman rule finally an interest rate feedback rule whereby the nominal interest rate depends on inflation and output fits well the data emanating from the ramsey economy however the fitted rule is not of the taylor type for the implied inflation coefficient is less than one and close to zero and the output coefficient is negative jel classification e52 e61 e63

optimal fiscal policy with redistribution i study the optimal taxation oflabor and capital in a dynamic economy subject to government expenditure and technology shocks unlike representative agent ramsey models workers are heterogenous and lump sum taxation is not ruled out i consider two tax scenarios a linear taxation with a lump sum intercept and b nonlinear mirrleesian taxation when taxes are linear i derive a partial equivalence result with ramsey settings that provides a reinterpretation of such analyses i find conditions for perfect tax smoothing oflabor income taxes and zero capital taxation implications that contrast with ramsey are derived for public debt management for the nature of the time inconsistency problem and for the viability of replicating complete markets without state contingent bonds shifts in the distribution of skills provide a novel source for variations in tax rates for the nonlinear tax scenario i show that taxation based on income averages is optimal

open economy macroeconomics developments in theory and policy this paper views developments in open economy macroeconomics through the lens of the debate over european monetary unification the empirical tendency for nominal exchange rate regimes to affect the variability of nominal and real exchange rates alike can be rationalized by sticky price theories or models of asset market liquidity effects but plausible liquidity models have difficulty generating enough persistence to match the data thus the macroeconomic stabilization costs of forgoing the exchange rate realignment option seem pertinent it is argued that our theories of efficiencies due to a common currency remain unsatisfactory despite recent advances the paper concludes by reviewing theories of currency crisis

optimal fiscal policy in a stochastic growth model although most neoclassical growth models focus on competitive equilibria which are pareto optimal and ignore the role of government recent works by romer 28 29 judd 20 baxter and king s and bizer and judd 7 have shown that government can be introduced into and suboptimal equilibria can be studied in these models as well their studies however are positive analyses of the effects of fiscal policy in competitive equilibria the purpose of this paper is to apply ramsey s 27 theory of optimal taxation to the normative study of fiscal policy in a stocastic growth model ramsey studied a static representative consumer economy with many goods in his formulation a government consumes a fixed amount of these goods which it purchases at market prices and finances by levying flat rate excise taxes prices and quantities are determined in a competitive equilibrium the government is benevolent and its objective is to choose the optimal tax rates to maximize the representative consumer s utility a number of economists among them kydland and prescott 23 barro 3 turnovsky and brock 31 and lucas and stockey 26 have noted that ramsey s formulation can be applied to dynamic economies with uncertainty if one reinterprets the goods in static problems as dated state contingent goods in this framework a fiscal policy is a rule which specifies state contingent tax rates and the amount of public debt issue in each date the optimal fiscal policy is defined as the one which leads to a quantity