the effects of taxation price control and government contracts in oligopoly and monopolistic competition abstract many government contracts with or policies towards oligopolistic sectors essentially involve private firms selling a given proportion or quantity of output to the government at a fixed price p r with the remainder being sold on the open market often this is combined with consumer rationing examples include cement and sugar in india and health housing and defence in many countries the paper investigates the effects of these schemes including sales and excise taxation on prices output and household welfare under oligopoly and monopolistic competition less government control reduced may raise prices and tax shifting can be above or below 100 percent

stock markets and development this paper asks if financial development especially stock market development affects the level and or the growth rate of economic activity it finds a substantial effect on both current wisdom suggests that the growth effects of financial intermediation could be either permanent or transitory for instance the greenwood jovanovic 1990 henceforth gj model has an ak stucture with no diminishing returns to the reproducible factor and a permanent exogenous improvement in financial structure would cause a permanent increase in the rate of growth on the other hand if the returns to the reproducible factor did diminish better intermediation could lead only to level effects since one should not a priori exclude either growth effects or level effects we shall look for both our search for growth effects will use the gj model our search for level effects will rely on an amended version of the mankiw romer and weil 1992 henceforth mrw structure

financial systems financing constraints and investment empirical analysis of oecd countries this paper investigates the influence of cash flow on corporate investment in 11 oecd countries we find that the sensitivity of investment levels to internally available funds differs significantly across countries and is lower in countries with predominantly close bank firm relationships than in countries with predominantly arm s length bank firm relationships at the same time we find no relationship of the levels of financial constraints to indicators of overall financial development our results are consistent with the view that information and incentive problems in the capital market have important effects on corporate investment and that close bank firm relationships can reduce these problems and thus improve the access of firms to external finance

gdp nowcasting application and constraints in a small open developing economy despite data limitations an attempt is made to find out if a gdp nowcasting model can provide reliable forecasts for a small open economy two competing bayesian vector autoregressive models are tested rigorously to obtain the optimal model by minimizing in sample forecasting errors the main finding of this study is that gdp nowcasting can produce reliable results for a small open economy despite the unavailability of sufficient data sets and the lack of high frequency indicators

limits of floating exchange rates the role of foreign currency debt and import structure abstract a traditional argument in favor of flexible exchange rates is that they insulate output better from real shocks because the exchange rate can adjust and stabilize demand for domestic goods through expenditure switching this argument is weakened in models with high foreign currency debt and low exchange rate pass through to import prices the present study evaluates the empirical relevance of these two factors we analyze the transmission of real external shocks to the domestic economy under fixed and flexible exchange rate regimes for a broad sample of countries in a panel var and let the responses vary with foreign currency debt and import structure we find that flexible exchange rates do not insulate output better from external shocks if the country imports mainly low pass through goods and foreign indebtedness is high

aggregate spending and the terms of trade is there a laursen metzler effect this paper investigates the spending and current account effects of terms of trade shifts in a model where households maximize utility over an infinite planning period in the framework developed here an economy specialized in production must experience a fall in aggregate spending and a current surplus as a result of an unanticipated permanent worsening in its terms of trade the paper s model thus provides a setting in which the current account deficit predicted by laursen and metzier harberger and others fails to materialize

optimal taxation and heterogeneous oligopoly this paper examines the effects of firm specific taxes on an oligopoly composed of firms of unequal sizes holding different conjectures operating with nonidentical costs four types of effects are analyzed on profits on industry concentration on total tax revenue and on social welfare the author derives 1 the revenue maximizing taxes 2 the welfare maximizing taxes and 3 welfare maximizing taxes subject to a revenue constraint

real exchange rate monetary policy and the u s economy evidence from a favar model this paper examines the effects of exchange rate depreciation to the u s economy in a factor augmented vector autoregression model using monthly data of 148 variables for the post bretton woods period of 1973 2017 exchange rate shock is identified to reflect exogenous disturbances to the foreign exchange market and movements in exchange rate that are not accounted for by changes in the u s monetary policy we find that depreciation is expansionary and inflationary to the broad u s economy the current account improves over time conforming to the j curve theory and monetary policy is leaning against the wind jel e3 e5 f31 f32 f41

savings and the terms of trade under borrowing constraints the authors examine the extent to which permanent terms of trade shocks have an asymmetric effect on private savings using a simple three period model they show that if households expect to face binding constraints on borrowing in bad states of nature when the economy is in a long trough rather than a sharp peak savings rates will respond asymmetrically to favorable movements in the permanent component of the terms of trade in contrast with the predictions of conventional consumption smoothing models they test the asymmetric effects of terms of trade disturbances using an econometric model that controls for various standard determinants of private savings the results based on panel data for non oil commodity exporters of sub saharan africa for 1980 96 a group of countries for which movements in the terms of trade have traditionally represented a key source of macroeconomic shocks indicate that increases in the permanent component of the terms of trade measured using three alternative filtering techniques indeed tend to be associated with higher rates of private savings

european corporate governance trading off liquidity against control abstract ownership dispersion is a pre requisite for liquid stock markets but it entails a collective action problem individual investors have no incentives to engage in direct monitoring legal devices can provide solutions along three dimensions one they can concentrate or dilute voting power two they can affect liquidity three they can give the right or wrong monitoring incentives this paper shows how these devices are used and how they can depress liquidity legal constraints aimed at strengthening minority protection can reduce the scope for monitoring destroy liquidity and even create incentives for minority abuse for example one share one vote restrictions encourage the formation of pyramidal holding companies the search for solutions that concentrate voting power provide liquidity and protect minorities continues

the terms of trade and the current account the harberger laursen metzler effect the paper examines the effect of terms of trade changes on a small country s spending and current account assuming optimizing behavior in an intertemporal framework with perfect international capital mobility a temporary future terms of trade deterioration implies a deterioration improvement of the trade balance whereas a permanent terms of trade deterioration has an ambiguous effect depending on the rate of time preference nominal and real variables are considered via exact price indexes two periods and an infinite horizon are examined

global implications of self oriented national monetary rules author s obstfeld maurice rogoff kenneth abstract it is well known that if international linkages are relatively small the potential gains to international monetary policy coordination are typically quite limited but what if goods and financial markets are tightly linked is it then problematic if countries unilaterally design their institutions for monetary stabilization are the stabilization gains from having separate currencies largely squandered in the absence of effective international monetary coordination we argue that under plausible assumptions the answer is no unless risk aversion is very high lack of coordination in rule setting is a second order problem compared to the overall gains from monetary policy stabilization

comparing dsge var forecasting models how big are the differences abstract i generate priors for a vector autoregression var from a standard real business cycle rbc model an rbc model with capital adjustment costs and habit formation and a sticky price model with an unaccommodating monetary authority the response of hours worked to a tfp shock differs sharply across these models i compare the accuracy of forecasts made from each of the resulting dynamic stochastic general equilibrium vector autoregression dsge var models despite having different structural characteristics the dsge vars are comparable in terms of forecasting performance as in previous work dsge vars compare favorably with atheoretical vars

the internationalisation of monetary policy abstract the case for formal central bank cooperation remains limited and practical considerations make its implementation difficult that being said central banks need to be engaged in a constant dialogue so as to remain ready for rapid coordinated action in exceptional circumstances also they should strive to strengthen the global financial safety nets within their monetary policy mandates so that they can better address global or regional liquidity crises thereby limiting the case for self insurance

tax design in the presence of imperfect competition an example abstract this paper studies the effects upon price output and entry in an oligopolistic market induced by tax policy elsewhere in the economy the results derived are applied to a model of copying to find conditions for which subsidisation of the manufacturers of originals is welfare improving the critical factor is found to be the distribution of consumers tastes

the online shadow of offline signals which sellers get contacted in online b2b marketplaces this article extends the understanding of what impels buyers to contact particular sellers in online business to business b2b marketplaces which are typically characterized by sparse social structures and concomitant limitations in observing social cues integrating an institutional perspective with signaling theory our core argument is that offline seller characteristics that are visible online in particular geographic location and legal status convey credible signals of seller behavior because they provide buyers with information on sellers local institutional quality and the institutionally induced obligations and controls acting on sellers using unique data from a large italian online b2b marketplace between the fourth quarter of 1999 and july 2001 we find that both sellers local institutional quality and their legal statuses affect a buyer s likelihood of contacting a seller moreover consistent with the idea that a buyer s own local institutional quality generates a relevant reference point against which sellers are evaluated we find that a buyer is progressively more likely to contact sellers the higher their local institutional quality relative to the buyer jointly our findings imply that in online b2b marketplaces signals conveyed by sellers geographic locations and legal statuses may constitute substantive sources of competitive heterogeneity and market segmentation

terms of trade and exchange rate regimes in developing countries abstract since friedman essays in positive economics university of chicago press chicago 1953 157 203 an advantage often attributed to flexible exchange rate regimes over fixed regimes is their ability to insulate more effectively the economy against real shocks i use a post bretton woods sample 1973 96 of 75 developing countries to assess whether the responses of real gdp real exchange rates and prices to terms of trade shocks differ systematically across exchange rate regimes i find that responses are significantly different across regimes in a way that supports friedman s hypothesis the paper also examines the importance of terms of trade shocks in explaining the overall variance of output and prices in developing countries

optimal two part tariffs for inputs the case of imperfect competition abstract traditionally the analysis of optimal two part tariffs has assumed that the regulated firm is selling directly to final consumers in this paper the authors take account of the fact that many of the utility s customers are firms which use the utility s output as an input in their own production process and then sell to final consumers the downstream firms are assumed to be imperfectly competitive and the optimal two part tariff is affected by the need to correct for the consequent divergence between price and marginal cost in the downstream industry

the dynamic impacts of monetary policy an exercise in tentative identification it is currently popular to identify monetary policy shocks with innovations in some measure of reserves or in the federal funds rate these assumptions about the interest elasticity of the supply of or demand for reserves imply monetary policy shocks that produce dynamic responses of macroeconomic variables that are anomalous relative to traditional monetary analyses this paper tentatively identifies supply and demand shocks in the markets for reserves and m2 for the 1980s and contrasts them with results for the 1970s in the later period identified monetary policy shocks have dynamic impacts that are fully consistent with traditional analyses

the decision to go public an overview abstract firms motives for going public are reviewed and significant cross country differences in the propensity to seek a listing are documented and discussed

corporate control and the market for managerial labour on the decision to go public abstract this paper analyses some of the tradeoffs involved in the decision to go public the main point is that entrepreneurs go public in order to fund larger projects but lose discretion over decisions by becoming accountable to outside investors the analysis focuses on succession and recruiting problems and assumes that the major source of private benefits of control is connected with investments in human capital firms control structure influences their decision to search for new managers this creates an externality between firms and equilibria can be pareto ranked such that the emergence of a superior control structure for all firms is inhibited by coordination failure

preplanned exit strategies in venture capital abstract this paper empirically considers the role of preplanned exits the investor s initial strategy to sell the investee firm via an acquisition or an initial public offering ipo at the time of initial contract with the entrepreneur legal conditions and investor versus investee bargaining power in the allocation of cash flow and control rights in entrepreneurial finance we introduce a sample of 223 entrepreneurial investee firms financed by 35 venture capital funds in 11 continental european countries and these data indicate the following first preplanned acquisition exits are associated with stronger investor veto and control rights a greater probability that convertible securities will be used and a lower probability that common equity will be used the converse is observed for preplanned ipos second investors take fewer control and veto rights and use common equity in countries of german legal origin relative to socialist scandinavian and french legal origin third more experienced entrepreneurs are more likely to get financed with common equity and less likely to be financed with convertible preferred equity while more experienced investors are more likely to use convertible preferred equity and less likely to use common equity

does environmental regulation create merger incentives this paper studies merger incentives for polluting cournot firms under a competitive tradable emission permits market we find that when firms are symmetric and marginal costs are constant an horizontal merger is welfare enhancing if efficiency gains are high enough for the merger to take place the presence of a competitive or monopolistic outside market that also trades in the permits market makes profitable a merger that would not happen otherwise when firms are vertically related in an input output chain an horizontal merger in one of the markets increases profits in the other market due to the permits price decrease finally we consider an oligopoly fringe model in which firms differ in their marginal production costs a merger between the dominant oligopolistic firms decreases the permits price and is always profitable such setting is relevant to assess the observed mergers between power generators in several market for permits like the regional greenhouse gas initiative rggi allowing us to derive some policy recommendations

the sources of financial crises pre and post fed evidence this paper investigates the generation and the propagation mechanism of currency demand and supply shocks before and after world war i the structural determinants of the variability of stock prices and interest rates and the changes introduced by the creation of the fed on the dynamics of the system it is shown that in the pre 1914 era external monetary shocks interacted with a seasonal demand for money to produce financial crises the fed helped to prevent crises by insulating the u s economy from external shocks a structural vector autoregressive model provides evidence for these claims copyright 1991 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

optimal fiscal regime in a spatial duopoly abstract we investigate a horizontally differentiated duopoly in which a public authority can either tax or subsidize firms in order to induce duopolists to choose the socially optimal locations the policy proposed here is such that welfare maximization is achieved by directly affecting firms location without explicitly modifying their price behavior

measuring the effects of dollar appreciation on asia a favar approach abstract exchange rate shocks have mixed effects on economic activity in both theory and empirical var models in this paper we extend the empirical literature by considering the implications of a positive shock to the u s dollar in a factor augmented vector autoregression favar model for the u s and three large asian economies korea japan and china the favar framework allows us to represent a country s aggregate economic activity by a latent factor generated from a broad set of underlying observable economic indicators to control for global conditions we also include in the favar a global conditions index which is another latent factor generated from the economic indicators of major trading partners we find that a dollar appreciation shock reduces economic activity and inflation not only for the u s economy but also for all three asian economies this result which is robust to a number of alternative specifications suggests that in spite of their disparate economic structures and policy regimes the dollar appreciation shock affects the asian economies primarily through its impact on u s aggregate demand and this demand channel dominates the expenditure switching channel that affects a country s export competitiveness

the geography of equity listing why do companies list abroad this paper documents aggregate trends in the foreign listings of companies and analyzes their distinctive prelisting characteristics and postlisting performance in 1986 1997 many european companies listed abroad mainly on u s exchanges while the number of u s companies listed in europe decreased european companies that cross list tend to be large and recently privatized firms and expand their foreign sales after listing abroad they differ sharply depending on where they cross list the u s exchanges attract high tech and export oriented companies that expand rapidly without significant leveraging companies cross listing within europe do not grow unusually fast and increase their leverage after cross listing foreign listings are becoming an increasingly important strategic issue for companies and stock exchanges alike as companies become global in their product market and investment strategies direct access to foreign capital markets via an equity listing can yield important benefits at the same time the international integration of capital markets has led to unprecedented levels of competition among stock exchanges in this competitive struggle the winners are the exchanges that manage to attract more foreign listings and the attendant trading volume and business opportunities despite the importance of these issues still little is known about which exchanges succeed in capturing more listings from abroad and why this question is intimately related to a second issue namely which advantages companies expect to get from a foreign listing securing cheap equity capital for new investment allowing controlling shareholders to divest on a liquid market preparing for foreign acquisitions or simply enhancing the compa

global implications of national unconventional policies abstract financial integration in the markets for banks assets and liabilities makes balance sheet constraints highly correlated across countries resulting in a high degree of financial and macroeconomic interdependence likewise under financial integration unconventional policies aimed at stabilizing domestic financial and credit conditions could entail large international spillovers therefore stabilization by one country will also benefit other countries reducing incentives to implement credit policies in a classic free riding problem especially when these policies entail domestic costs we show that this outcome can emerge in an open economy model featuring financial intermediaries that face endogenously determined balance sheet constraints

the terms of trade the real exchange rate and economic fluctuations this paper examines the relationship between terms of trade and business cycles using a three sector intertemporal equilibrium model and a large multicountry database results show that terms of trade shocks account for nearly one half of actual gdp variability the model explains weak correlations between net exports and terms of trade the harberger laursen and metzler effect and produces large and weakly correlated deviations from purchasing power parity and real interest rate parity terms of trade shocks cause real appreciations and positive interest differentials although productivity shocks have opposite effects the puzzle that welfare gains of international asset trading are negligible is left unresolved copyright 1995 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

monetary policy in a data rich environment abstract most empirical analyses of monetary policy have been confined to frameworks in which the federal reserve is implicitly assumed to exploit only a limited amount of information despite the fact that the fed actively monitors literally thousands of economic time series this article explores the feasibility of incorporating richer information sets into the analysis both positive and normative of fed policymaking we employ a factor model approach developed by stock j h watson m w diffusion indices journal of business economic statistics 2002 20 2 147 forecasting inflation 1999 journal of monetary economics 44 2 293 that permits the systematic information in large data sets to be summarized by relatively few estimated factors with this framework we reconfirm stock and watson s result that the use of large data sets can improve forecast accuracy and we show that this result does not seem to depend on the use of finally revised as opposed to real time data we estimate policy reaction functions for the fed that take into account its data rich environment and provide a test of the hypothesis that fed actions are explained solely by its forecasts of inflation and real activity finally we explore the possibility of developing an expert system that could aggregate diverse information and provide benchmark policy settings

the stock market as a source of capital some lessons from initial public offerings in italy abstract this paper complements the analysis of the decision to go public contained in pagano et al 1995 we compare a larger set of italian initial public offerings including holding companies with size matched private companies even in this larger sample we find evidence that 1 i the new equity capital raised upon listing is not used to finance subsequent investment and growth 2 ii going public reduces the cost of credit 3 iii it is often associated with equity sales by controlling shareholders and is followed by a higher turnover of control than for other companies a novel finding is that the funds raised are used to purchase stakes in other companies and other financial assets

monetary policy shocks and foreign investment income evidence from a large bayesian var abstract this paper assesses the transmission of monetary policy in a large bayesian vector autoregression based on the approach proposed by banbura et al 2010 the paper analyzes the impact of monetary policy shocks in the united states and canada not only on a range of domestic aggregates trade flows and exchange rates but also foreign investment income the analysis provides three main results first a surprise monetary policy contraction has a statistically important impact on both gross and net foreign investment income flows in both countries against the background of growing foreign wealth and investment income this result provides preliminary evidence that foreign balance sheet channels might play an increasingly significant role for monetary transmission second the impact of monetary policy on foreign investment income flows differs considerably across asset categories and over time suggesting that the investment instruments and the currency denomination of a country s foreign assets and liabilities are potentially relevant for the way in which monetary policy affects the domestic economy finally the results support existing evidence on the effectiveness of large vector autoregressions and the bayesian shrinkage approach in eliminating price and exchange rate puzzles

bayesian methods for dynamic multivariate models if dynamic multivariate models are to be used to guide decisionmaking it is important that probability assessments of forecasts or policy projections be provided when identified bayesian vector autoregression var models are presented with error bands in the existing literature both conceptual and numerical problems have not been dealt with in an internally consistent way in this paper the authors develop methods to introduce prior information in both reduced form and structural var models without introducing substantial new computational burdens their approach makes it feasible to use a single large dynamic framework for example twenty variable models for tasks of policy projections copyright 1998 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

current accounts in debtor and creditor countries the authors reexamine a classic question in international economics what is the current account response to a transitory income shock such as a temporary improvement in the terms of trade a transfer from abroad or unusually high production to answer this question they construct a world equilibrium model in which productivity varies across countries and international borrowing and lending take place to exploit good investment opportunities despite its conventional ingredients the model generates the novel prediction that favorable income shocks lead to current account deficits in debtor countries and current account surpluses in creditor countries evidence from thirteen oecd countries broadly supports this theoretical prediction

changing macroeconomic dynamics at the zero lower bound this article develops a change point var model that isolates four major macroeconomic regimes in the us since the 1960s the model identifies shocks to demand supply monetary policy and spread yield using restrictions from a general equilibrium model the analysis discloses important changes to the statistical properties of key macroeconomic variables and their responses to the identified shocks during the crisis period spread shocks became more important for movements in unemployment and inflation a counterfactual exercise evaluates the importance of lower bond yield spread during the crises and suggests that the fed s large scale asset purchases helped lower the unemployment rate by about 0 6 percentage points while boosting inflation by about 1 percentage point

were there regime switches in u s monetary policy working paper 2004 14 june 2004 abstract a multivariate model identifying monetary policy and allowing for simultaneity and regime switching in coefficients and variances is confronted with u s data since 1959 the best fit is with a model that allows time variation in structural disturbance variances only among models that also allow for changes in equation coefficients the best fit is for a model that allows coefficients to change only in the monetary policy rule that model allows switching among three main regimes and one rarely and briefly occurring regime the three main regimes correspond roughly to periods when most observers believe that monetary policy actually differed and the differences in policy behavior are substantively interesting though statistically ill determined the estimates imply monetary targeting was central in the early 80s but was also important sporadically in the 70s the changes in regime were essential neither to the rise in inflation in the 70s nor to its decline in the 80s jel classification e52 e47 c53 key words counterfactuals lucas critique policy rule monetary targeting simultaneity volatility model comparison i the debate over monetary policy change in an influential paper clarida gali and gertler 2000 cgg presented evidence that us monetary policy changed between the 1970 s and the 1980 s indeed that in the 70 s it was drastically worse they found that the policy rule apparently followed in the 70 s was one that when embedded in most stochastic general equilibrium models would imply non uniqueness of the equilibrium and hence vulnerability of the economy to sunspot fluctuations of arbitrarily large size their estimated policy rule for the later period on the other hand eliminated this indeterminacy these results are a possible explanation of the volatile and rising inflation of the 70 s and of its subsequent decline the cgg analysis has two important weaknesses one is that it fails to account for stochastic volatility us macroeconomic variables and particularly the federal funds rate have gone through periods of tranquility and of agitation with forecast error variances varying greatly from period to period ignoring such variation does not lead to inconsistent estimates of model parameters when the forecasting equations themselves are constant but it strongly biases toward a finding of changed parameters tests of the stability of the forecasting equations the other weakness is that the cgg analysis rests on powerful and implausible identifying assumptions they require that we accept that the response of the monetary authority to expected future inflation and output does not depend on the recent history of inflation money growth or output it is hard to understand why this should be so especially in the 70 s when monetarism was a prominent theme in policy debates congress was requiring reports from the fed of projected time paths of monetary aggregates and financial markets were reacting sensitively to weekly money supply numbers the requirement for existence and uniqueness of equilibrium in dynamic models is that the monetary policy rule show a more than unit response of interest rates to the sum of the logs of all nominal variables that appear on the right hand side of the reaction function if we force a particular measure of expected future inflation to proxy for all the nominal variables that actually appear independently in the reaction function we are bound to get distorted conclusions on the one hand because expected future inflation will be a noisy measure of the full set of nominal influences on policy we might get downward bias in our estimates from the usual errorsin variables effect on the other hand to the extent that expected future inflation like most expected future values shows less variation than current nominal variables we could find a mistaken scaling up of coefficients

the flotation of companies on the stock market abstract in some countries the size of the stock market and the number of listed companies have persistently lagged behind the growth of the economy trading externalities can help explain this fact an entrepreneur who goes public increases risk sharing opportunities for others this externality can lead to an inefficiently low number of listed companies and also generate multiple equilibria when flotation decisions are positively correlated across entrepreneurs this happens if these face borrowing constraints and lack liquidity and thus cannot diversify their portfolios unless they go public it also happens if trading shares is costly so that a sufficient number of issues must be listed to lure investors into the market

on the impossibility of central bank independence four decades of time and intellectual inconsistency the intellectual justification for modern central banking time inconsistency celebrated its fortieth anniversary in 2017 alongside the cambridge journal of economics however the key progeny of the time inconsistency literature central bank independence has fundamental flaws that have been thus far neglected in mainstream research in the first instance the argument for independence relies on a utilitarian rather than institutional analysis one that neglects the genesis of central banks and their relation to other institutions within a country second central bank independence neglects the complex interdependencies of the global monetary and financial system applying an institutional lens to the concept of central bank independence i conclude that independence fails under the reality of globalization as much as it does in a domestic context with central banks reliant on all manner of political institutions they are never really independent operationally or in terms of policy

ramsey tax rules for economies with imperfect competition abstract this paper derives optimal commodity tax rules for a general equilibrium model with imperfect competition to achieve this functions are constructed that describe the effects of taxation upon the equilibrium prices and profit levels of imperfectly competitive industries the use of these functions allows existing tax rules to be generalised to accommodate imperfect competition

estimating the effect of tax reform in differentiated product oligopolistic markets abstract the incidence of taxation has been extensively discussed in the public finance literature but mainly within a competitive market setting or within a homogenous good cournot type oligopoly in a differentiated product oligopoly the effect of taxation can be more complex as the rate of taxation may affect not only the prices but also the profile and quality of products that are sold in the market in this paper we examine the effects of changing tax regimes in a differentiated product oligopoly in order to illustrate our approach we employ data from one such market the automobile market in israel

optimum commodity taxation in pooling equilibria abstract this paper extends the standard model of optimum commodity taxation ramsey f 1927 a contribution to the theory of taxation economic journal 37 47 61 diamond p mirrlees j 1971 optimal taxation and public production ii tax rules american economic review 61 261 278 to a competitive economy in which markets are inefficient due to asymmetric information insurance markets are prime examples consumers impose varying costs on suppliers but firms cannot associate costs with individual customers and consequently all are charged equal prices in such a competitive pooling equilibrium the price of each good is equal to the average of individual marginal costs weighted by equilibrium quantities we derive modified ramsey boiteux conditions for optimum taxes in such an economy and show that in addition to the standard formula they include first order effects which reflect the deviations of prices from marginal costs and the response of equilibrium quantities to the taxes levied an explanation of the additional terms is provided it is shown that a condition on the monotonicity of demand elasticities enables to sign the direction of the deviations from the standard case

does the alternative investment market nurture firm growth a comparison between listed and private companies the creation of stock market segments with low admission requirements was welcomed in the 1990s as an essential move to release small and medium sized enterprises from their dependency on banks for external funding thereby removing the financial barriers that hinder their growth and competitiveness but does easier access to public equity really translate into superior real performance we explore this issue by focusing on the alternative investment market aim a junior segment of the london stock exchange that has experienced long lasting growth in capitalization

the switching effect of environmental taxation within bertrand differentiated duopoly we investigate second best optimal taxation of the polluting variety of a product in a bertrand duopoly with differentiated varieties the analysis provides novel insight on a useful social function of environmental regulation besides internalizing the environmental externality the taxation of the polluting variety improves the matching of consumers and product varieties and so creates a socially desirable business switching between the differentiated varieties

quality based price discrimination and tax incidence the market for gasoline and diesel cars in europe the existing tax policies toward gasoline and diesel cars in european countries provide a unique opportunity to analyze quality based price discrimination and the implied tax incidence in my econometric framework consumers choose the type of engine based on their annual mileage prices are set by the manufacturers the relative pricing of gasoline and diesel cars appears to be consistent with monopolistic price discrimination effectively segmenting low mileage from high mileage consumers on average about 75 to 90 of the price differentials between gasoline and diesel cars can be explained by markup differences i draw implications for the effectiveness and the revenue effects of tax policy