Dealing with a liquidity trap when government debt matters: Optimal time-consistent monetary and fiscal policy

How does the need to preserve government debt sustainability affect the optimal monetary and fiscal policy response to a liquidity trap? To provide an answer, we employ a small stochastic New Keynesian model with a zero bound on nominal interest rates and characterize optimal time-consistent stabilization policies. We focus on two policy tools, the short-term nominal interest rate and debt-financed government spending. The optimal policy response to a liquidity trap critically depends on the prevailing debt burden. While the optimal amount of government spending is decreasing in the level of outstanding government debt, future monetary policy is becoming more accommodative, triggering a change in private sector expectations that helps to dampen the fall in output and inflation at the outset of the liquidity trap.     

Impacts of Monetary, Fiscal and Exchange Rate Policies on Output in China: A Var Approach

Applying the VAR model and using the interest rate as a monetary policy variable, we find that in the long run, output in China responds negatively to a shock to the interest rate, the real exchange rate, government debt, or the inflation rate, and it reacts positively to a shock to government deficits or lagged own output. When real M2 is chosen as a monetary policy variable, long-term output in China responds positively to a shock to real M2 or lagged own output, and it reacts negatively to a shock to the real exchange rate, government debt, or government deficits. Its response to a shock to the inflation rate is negative when government debt is used and is positive when government deficits are considered. In the short run, fiscal policy is more important than monetary policy in three out of four cases. In the long run, monetary policy is more influential than fiscal policy in three out of four cases. Therefore, the government may consider conducting monetary and fiscal policies differently in the short run and long run. The government needs to be cautious in pursuing deficit spending as its long-term impacts depend on the monetary variable employed. The policy of maintaining a relatively stable exchange rate is appropriate as the depreciation of the Yuan may hurt the economy in the short run.JEL Classifications: E5, F4, H6     

When Does Government Debt Crowd Out Investment?

We examine when government debt crowds out investment for the US economy using an estimated New Keynesian model with detailed fiscal specifications and accounting for monetary and fiscal policy interactions. Whether investment is crowded in or out in the short term depends on policy shocks triggering debt expansions: higher debt can crowd in investment for cutting capital tax rates or increasing government investment. Contrary to the conventional view, no systematic relationships between real interest rates and investment exist, explaining why reduced‐form regressions are inconclusive about crowding out. At longer horizons, distortionary financing is important for the negative investment response to debt. Copyright © 2013 John Wiley & Sons, Ltd.     

Model uncertainty and intertemporal tax smoothing

In this paper we examine how model uncertainty due to the preference for robustness (RB) affects optimal taxation and the evolution of debt in the Barro tax-smoothing model (1979). We first study how the government spending shocks are absorbed in the short run by varying taxes or through debt under RB. Furthermore, we show that introducing RB improves the model׳s predictions by generating (i) the observed relative volatility of the changes in tax rates to government spending, (ii) the observed comovement between government deficits and spending, and (iii) more consistent behavior of government budget deficits in the U.S. economy. Finally, we show that RB can also improve the model׳s predictions in the presence of multiple shocks.     

不同资本账户开放程度下的中国财政货币政策效果分析

研究目标：分析不同资本账户开放程度下的中国财政货币政策效果及福利效应。研究方法：将内生化的政府支出（税收）政策以及包含汇率的价格（数量）型为主的混合货币政策一并纳入一个小型开放的DSGE模型。研究发现：随着资本账户的逐步放开，财政政策方面，减税政策刺激经济增长和促进就业的效果越来越好，政府支出政策刺激经济增长和促进就业的效果越来越差；货币政策方面，国内货币政策的调控效果及利率上升的跨期替代效应减弱。从社会福利损失的角度分析表明：无论是与内生化的政府支出（税收）政策组合还是与财政赤字政策组合，价格型为主的混合货币政策始终优于数量型为主的混合货币政策。研究创新：考察在高、中和低三种资本账户开放背景下中国不同财政货币政策组合的相互作用和经济效应。研究价值：为资本账户放开过程中合理地使用财政货币政策组合提供理论参考。     

Prudence and Pragmatism in the Fiscal Stance

In this article, Simon Price argues that the government is pursuing a remarkably conservative fiscal policy. Not only has demand management been left almost entirely to the MPC, but since 1997 spending has been held down while the overall tax burden has been raised. Consequently, the relative size of the national debt is declining at a rapid rate. There are rules that are intended to govern debt policy, but they are based on less sound principles than the government argues, and may be inconsistent. Oddly, despite the emphasis on these rules, the government has announced a path for spending that makes it clear that it is in fact planning not to follow them. The government may be planning to reduce the national debt at an excessive rate. This may make sense in the short run, but is more problematic in the medium to long term. This is not to say fiscal policy should be immediately relaxed; the current low levels of private sector saving may well justify a temporarily tight fiscal stance.     

What are the effects of fiscal policy shocks?

We propose and apply a new approach for analyzing the effects of fiscal policy using vector autoregressions. Specifically, we use sign restrictions to identify a government revenue shock as well as a government spending shock, while controlling for a generic business cycle shock and a monetary policy shock. We explicitly allow for the possibility of announcement effects, i.e., that a current fiscal policy shock changes fiscal policy variables in the future, but not at present. We construct the impulse responses to three linear combinations of these fiscal shocks, corresponding to the three scenarios of deficit‐spending, deficit‐financed tax cuts and a balanced budget spending expansion. We apply the method to US quarterly data from 1955 to 2000. We find that deficit‐financed tax cuts work best among these three scenarios to improve GDP, with a maximal present value multiplier of five dollars of total additional GDP per each dollar of the total cut in government revenue 5 years after the shock. Copyright © 2009 John Wiley & Sons, Ltd.     

Fiscal news and macroeconomic volatility

This paper analyzes the contribution of anticipated capital and labor tax shocks to business cycle volatility in an estimated New Keynesian business cycle model. While fiscal policy accounts for about 15% of output variance at business cycle frequencies, this mostly derives from anticipated government spending shocks. Tax shocks, both anticipated and unanticipated, contribute little to the fluctuations of real variables. However, anticipated capital tax shocks do explain a sizable part of inflation fluctuations, accounting for up to 12% of its variance. In line with earlier studies, news shocks in total account for about 50% of output variance. Further decomposing this news effect, we find permanent total factor productivity news shocks to be most important. When looking at the federal level instead of total government, the importance of anticipated tax and spending shocks significantly increases, suggesting that fiscal policy at the subnational level typically counteracts the effects of federal fiscal policy shocks.     

Managing the Public Debt: The Optimal Taxation Approach

This paper examines research on public debt management, focusing on debt structure by denomination, indexation features, and maturity. The optimal taxation approach is reviewed and its policy implications are related to the trade-off between minimization of the expected cost of debt servicing and minimization of budgetary risk. Strong arguments are provided for debt instruments which yield low returns when output and hence revenues are lower and public spending higher than expected. This debt design minimizes tax distortions and provides flexibility in conducting fiscal policy. The exact characterization of the debt composition which supports efficient taxation depends on the stochastic structure of the economy. Long-term nominal debt is a hedge against supply shocks affecting revenues and inflation and makes the government budget insensitive to interest-rate risk. However, at high levels of debt, the extent of insurance or flexibility that governments can obtain by issuing long-term nominal debt is limited by the need to maintain the credibility of the anti-inflation stance.     

Monetary and fiscal policy under deep habits

Allowing habits to be formed at the level of individual goods – deep habits - can radically alter the fiscal policy transmission mechanism as the counter-cyclicality of mark-ups this implies can result in government spending crowding-in rather than crowding-out private consumption in the short run. We explore the robustness of this mechanism to the existence of price discrimination in the supply of goods to the public and private sectors. We then describe optimal monetary and fiscal policy in our New Keynesian economy subject to the additional externality of deep habits and explore the ability of simple policy rules to mimic fully optimal policy. We find that the presence of deep habits at empirically estimated levels can imply large externalities that significantly affect the conduct of monetary and tax policy. However, despite the rise in government spending multipliers implied by deep habits, government spending is barely used as a stabilisation tool under the optimal policy.     

Optimal fiscal and monetary policy with occasionally binding zero bound constraints

This paper studies optimal fiscal and monetary policy when the nominal interest rate is subject to the zero lower bound (ZLB) constraint in a stochastic New Keynesian economy. In the baseline model calibrated to match key features of the U.S. economy, it is optimal for the government to increase its spending when at the ZLB in the stochastic environment by about 60 percent more than it would in the deterministic environment. The presence of uncertainty creates a unique time-consistency problem if the steady state is inefficient. Although access to government spending policy increases welfare in the face of a large deflationary shock, it decreases welfare during normal times as the government reduces the nominal interest rate less aggressively before reaching the ZLB.     

Democratic transition and fiscal policy in the Arab world

This paper investigates the relationship between democracy and public debt in the Arab world over the period 2002–2013. The results show strong evidence of an inverted U-shaped relationship between democracy and public debt. This means that democratization is associated with lower debt only when a certain level of democracy is reached. In an attempt to explain these findings, we assume that the effect of democracy on public debt operates mainly through its impact on government spending and government revenue. Our results show that the inverted U-shaped relationship between democracy and public debt stems from the inverted U-shaped democracy-government spending path and the U-shaped democracy-government revenue pattern. This implies that, at the earlier stages of democratization, democracy is associated with an increase in government spending and a decrease in government revenue, which stimulates public debt. However, beyond a certain level of democracy, further democratization reduces government spending and enhances government revenue, leading to lower levels of public debt. Hence, achieving some level of democracy is a key prerequisite to improve the effectiveness of public spending, enhance tax compliance, and thereby control public debt.     

Us Debt and Deficits: Time to Reverse the Trend

This article provides a primer on budget deficits from the creation of the federal government. Today federal government spending is 24% of GDP (compared with its historical average of 8.8%), fuelling debt of historic levels. The only effective way to reduce debt levels is to cut entitlement programmes and then set a tax rate sufficient, over the course of the business cycle, to fund government spending.     

Fiscal consolidation and its cross-country effects

We build a new Keynesian DSGE model consisting of two heterogeneous countries in a monetary union. We study how public debt consolidation in a country with high debt (like Italy) affects welfare in a country with solid public finances (like Germany). Our results show that debt consolidation in the high-debt country benefits the country with solid public finances over all time horizons, while, in Italy, debt consolidation is productive in the medium and long term. All this is with optimized feedback policy rules. On the other hand, fiscal consolidation hurts both countries and all the time, if it is implemented in an ad hoc way, like an increase in taxes. The least distorting fiscal mix from the point of view of both countries is the one which, during the early phase of pain, Italy cuts public consumption spending to address its debt problem and, at the same time, reduces income tax rates, while, once its debt has been reduced in the later phase, it uses the fiscal space to further cut income taxes.     

The London Business School with Gower Publishing

The Autumn Statement updated the government's spending plans and its forecast from those announced in the Budget in March. On both counts there is very little difference between the Treasury view and our own forecast released in October. The Treasury supports our projection that output and demand will decelerate in 1989, that inflation will peak in the first half of the year at about 7 per cent and fall back to 5 per cent by the end of the year and that the deficit on the current account of the balance of payments will narrow only marginally over the next 12 months. On public spending in 1989–90, our October forecast was close to the unchanged official figures. It was clear to us - though not to most City commentators - that savings on unemployment benefit, debt interest and elsewhere would enable greater spending on programmes within an unchanged planning total. In later years the government has upped its expenditure plans from those announced a year ago, as we had assumed it would. As a result, the Autumn Statement projects significant increases in real public spending from now on. We show that, under a more appropriate inflation forecast, public spending rises nearly 2 per cent next year but falls back in 1990–92. Finally we argue that, unless the Chancellor decides to run an even larger PSDR (public sector debt repayment) than the £12bn built into our forecast - and the Autumn Statement forecast assumes a PSDR in 1989–90 similar to the expected outturn in 1988–9 of £10bn - the scope for tax cuts remains intact.     

Fiscal and monetary interdependence

Where classical economics integrates the quantity theory of money with the concept of Ricardian equivalence, the tendency of recent macroeconomic presentations is to focus either upon money and inflation or upon taxation and debt. That neglect of classical monetary–fiscal integration is surprising, given an initiative by the International Monetary Fund that set credit, money, and fiscal policy within a single structure. This article places those ‘credit counterparts of broad money’ in the context of the Great Depression and the recent global financial crisis. The upshot is a set of conclusions: that, to counter the prospect of deflation, quantitative easing is a weak policy response; that fiscal deficits are better; and that cuts in taxation are preferable to increased government spending.     

Briefing Paper: The Interdependence of Fiscal and Monetary Policy under Economic and Monetary Union

This article explores the implications of Economic and Monetary Union (EMU) for the conduct of fiscal policy. Under EMU, where the European Central Bank is successful in controlling inflation, the loss of seigniorage revenues causes a potential problem for public sector deficits. To prevent the debt-income ratio from spiralling upwards, a primary budget surplus is ultimately required. EMU has usually been considered as a strong central monetary authority which forces fiscal discipline on lax national governments. But this is not the only possibility. Because the debt ratio can be reduced by surprise inflation, the price expectations of the private sector are important. Once these are taken into account, EMU can be examined in a 'game' framework in which the reputation of the authorities and the existence or otherwise of cooperation between the fiscal and monetary authorities becomes a critical factor.
The paper finds that where the authorities enjoy reputation and cooperate, a one-off reduction in public spending will lead to a permanent decline in the real interest rate and crowd in extra private spending (consumption and investment). Without reputation the cut in government spending has to be sustained. Where there is neither reputation nor cooperation, the outcome depends on the structure of the European economy and whether fiscal policy can effect the terms of trade between countries. If the terms of trade remain unchanged, the outturn is similar to the case of cooperation without reputation, but where the terms of trade can be improved in one country, there is no incentive to cut public spending. In this case the outturn is higher inflation with private spending crowded out.     

Political Macroeconomics: A Survey of Recent Developments

The paper surveys political macroeconomics, covering its development from Rogoff's conservative central banker to the most recent discussions of monetary policy and institutional design. Topics include the inflation-stabilization trade-off, central bank independence with escape clauses and overruling with costs, inflation targets, performance contracts for monetary authorities, and the consequences of output persistence for these issues. Further topics are the political business cycle when output is persistent, the political macroeconomics of fiscal policy, the government spending bias, and the game-theoretic interaction between fiscal and monetary policy. All work is discussed within a coherent analytical framework.     

Evaluating the sustainability of Italian public finances

Are Italy’s primary-surplus policies compatible with the sustainability of government debt? We address the question by examining historical budget data in post-unification Italy, from 1861 to 2016. Controlling for temporary output, temporary spending and world war-time periods in assessing whether primary surpluses significantly reacted to changes in debt, we find the following results: (i) the hypothesis of nonlinearity in the surplus-debt relationship significantly outperforms the hypothesis of linearity; (ii) there exists a threshold level in the debt-GDP ratio, approximately equal to 105 percent, above which Italian fiscal policy makers are concerned with corrective actions to avoid insolvency; (iii) the robustly positive reaction of primary surpluses to debt beyond the trigger point ensures fiscal sustainability.     

Decomposing Federal Funds Rate forecast uncertainty using time-varying Taylor rules and real-time data

This paper studies uncertainty about out-of-sample interest rate forecasts implied by an estimated Taylor rule. It is shown that the Taylor rule leads to a decomposition of forecast uncertainty into an element that depends on uncertainty about the future state of the economy and another element that is related to uncertainty about the monetary policy reaction function of the Federal Reserve. Uncertainty about one-quarter ahead Federal Funds Rate forecasts from 1975 to 2007 is estimated and analyzed using a real-time data set for the U.S.