THE BEHAVIOR OF U.S. PUBLIC DEBT AND DEFICITS DURING THE GLOBAL FINANCIAL CRISIS

In this paper we test the sustainability of U.S. public debt for the period 1916–2012 by analyzing how the primary surplus to gross domestic product (GDP) responds to changes in the debt to GDP ratio in a time‐varying parameter model. Further, we determine the stationarity property of the debt/GDP ratio while accommodating possible breaks in the data caused by wars and economic crisis under both the null and alternative hypotheses of an endogenous unit root test. The results show that the U.S. public debt was sustainable until 2005 when the primary surplus to GDP reacted negatively to the debt/income ratio. This is further exacerbated during the global financial crisis when primary surpluses continued to fall with increased debt, thus jeopardizing the sustainability of fiscal policy. While the stationarity test shows that the U.S. fiscal debt/GDP ratio is sustainable, it fails to highlight the risk that its debt policy has been becoming unsustainable in recent years. (JEL H62, E62, C2)     

可持续公共债务水平下的政府违约问题研究

现实经济中存在公共债务具有可持续性时却发生政府违约的现象,本文在政府未来收支波动具有不确定性的假设下,建立一个政府与投资者的重复博弈模型以分析这一现象,研究发现:公共债务可持续性并不能完全排除政府违约风险,在政府未来基本盈余不确定的条件下,理性投资者愿意持有的公共债务水平远低于可持续的公共债务水平,两者的差异取决于政府对未来基本盈余的控制能力.     

AN ENDOGENOUS GROWTH MODEL WITH PUBLIC CAPITAL AND SUSTAINABLE GOVERNMENT DEBT*

This paper presents and analyses an endogenous growth model with public capital and public debt. It is assumed that the ratio of the primary surplus to gross domestic income is a positive linear function of the debt income ratio which assures that public debt is sustainable. The paper then derives necessary conditions for the existence of a sustainable balanced growth path for the analytical model. Further, simulations are undertaken in order to gain insight into stability properties of the model and in order to analyse growth effects of deficit financed increases in public investment. The latter is done for the model on the sustainable balanced growth path as well as for the model along the transition path.     

Fiscal strategies,foreign indebtedness,and overlapping generations

Conclusions This paper offers a unifying dynamic system approach to real government debt and real capital formation in a world economy. The sustainability of permanently maintained primary fiscal deficits is investigated in an open economy. In particular if national governments compete in the issuance of debt at an international capital market sustainable debt profiles appear only as a theoretical (i. e., not empirically valid) curiosity. Within the more realistic regime of an undercapitalized world economy a nation can only run a permanently maintained primary surplus. Starting from a PMP surplus the paper also demonstrates the viability of temporary deficits implying an increase in taxation later to stabilize the fiscal debt. By reversing the argument this shows, the right way to reduce government debt in a non-traumatic manner is to run a higher temporary surplus via higher taxation. Using this extrasurplus to buy back fiscal debt the economy may reduce taxation later while enjoying vigorous capital accumulation towards a higher capital-labour ratio. Furthermore, the paper shows that ceteris paribus a relatively high social security load and a relatively high size of a balanced budget causes external indebtedness via consumption oriented current account deficits. It is left for further research to see what happens if government borrows for public investment instead of public consumption.My research was supported by Deutsche Forschungsgemeinschaft. While preparing the paper 1 had access to unpublished work by M. Carlberg and T. Ihori. Discussions with M. Carlberg, H. Großmann, J. Michaelis, and H. Schmid are gratefully acknowledged. The diagrams were mastered by C. Schwarz.     

How to assess debt sustainability? Some theory and empirical evidence for selected euro area countries

In this article we elaborate on the test proposed by Bohn (1998) that suggests to study whether the primary surplus relative to Gross Domestic Product (GDP) is a positive function of the public debt to GDP ratio in order to detect whether debt policies are sustainable. We argue that this should be complemented by additional tests for countries with rising debt to GDP ratios. We, then, apply that test to some countries of the euro area. In addition, we perform stationarity tests with respect to the real deficit inclusive of interest payments in order to gain additional insight. We conclude that there is empirical evidence that the chosen paths of fiscal policies are sustainable for the countries we consider, although there are country specific differences in debt policies.     

Testing the sustainability of German fiscal policy: evidence for the period 1960–2003

In this paper we test whether German public debt has been sustainable by testing how the primary surplus to GDP ratio reacts to the debt to GDP ratio. We apply semi-parametric regressions with time depending coefficients. This test shows that the mean of the coefficient relevant for sustainability is significantly positive over the time period considered. However, there is a negative trend in that coefficient which seems to have ceased to decline only in the middle to late 1990s.     

Bubble finance and debt sustainability: a test of the government's intertemporal budget constraint

This paper tests whether the government's budget is intertemporally balanced in a number of EC countries by applying a method first developed to detect speculative bubbles in financial markets. The test aims to establish whether the government can engage in buble finance, and is based on a comparison between two sets of estimates. The first is obtained directly by regressing the stock of outstanding debt on a distributed lag of the primary surplus. The second is obtained indirectly from a pair of equations, one relating the current debt stock to next period's primary surplus and debt stock, the other specifying an AR process for the primary surplus. In the presence of a bubble, only the first set of estimates is inconsistent, and hence the two sets differ. It is found that the null of no bubble can be rejected in the cases of Italy, Germany, Denmark and Greece implying that the government is not intertemporally solvent in these countries. The other EC member states appear to be on a sustainable path.     

PUBLIC DEBT AND PUBLIC INVESTMENT IN AN ENDOGENOUS GROWTH MODEL WITH REAL WAGE RIGIDITIES

We present an endogenous growth model with public capital, public debt and real wage rigidities due to labor market imperfections. Assuming that the primary surplus relative to gross domestic produce (GDP) is a positive function of the debt to GDP ratio, we study growth and employment effects of deficit‐financed public investment using simulations as well as how fiscal policy affects stability of the economy. Further, we contrast the growth rate and the unemployment rate in the deficit scenario with that of the balanced budget scenario. Finally, we compare our results with those obtained in case of flexible wages and full employment.     

FISCAL SUSTAINABILITY OF JAPAN: A DYNAMIC STOCHASTIC GENERAL EQUILIBRIUM APPROACH

The purpose of this paper is to investigate the fiscal sustainability of Japan by applying a dynamic stochastic general equilibrium model to the Japanese economy. By introducing intermediation costs into the model, we succeed in explaining the observed relationship between the interest and GDP growth rates, which is crucial in testing for sustainability. When the projected real growth rate is 2.5%, the average real interest rate becomes 2.57%, and the debt‐to‐GDP ratio gradually increases stochastically so that government debt is not sustainable. To recover sustainability, the primary surplus must be 0.2% of GDP.     

Public capital,sustainable debt and endogenous growth

We analyze an endogenous growth model with public capital and public debt where we posit that the primary surplus of the government is a positive function of cumulated past debt with an exponentially declining weight put on debt further back in time. We consider two scenarios: first, we study the model assuming that the government runs a balanced budget and, then, we compare the outcome to that of the model with permanent deficits. We analyze growth effects of the two scenarios and we study how fiscal policy of the government affects the dynamics of the model economy. It is demonstrated that the balanced growth rate is higher when cumulated past public debt is smaller. Further, we show that the debt policy of the government crucially determines the dynamics of the model economy and that endogenous growth cycles can arise.     

Central bank instruments, fiscal policy regimes, and the requirements for equilibrium determinacy

This paper examines the role of the monetary instrument choice for local equilibrium determinacy under sticky prices and different fiscal policy regimes. Corresponding to Benhabib et al.'s results for interest rate feedback rules [Benhabib, J., Schmitt-Grohé, S., Uribe, M., 2001. Monetary policy and multiple equilibria. American Economic Review 91, 167–185], the money growth rate should not rise by more than one for one with inflation when the primary surplus is raised with public debt. Under an exogenous primary surplus, money supply should be accommodating—such that real balances grow with inflation—to ensure local equilibrium determinacy. When the central bank links the supply of money to government bonds by controlling the bond-to-money ratio, an inflation stabilizing policy can be implemented for both fiscal policy regimes. Local determinacy is then ensured when the bond-to-money ratio is not extremely sensitive to inflation, or when interest payments on public debt are entirely tax financed, i.e., the budget is balanced.     

Public Debt,Productive Public Spending and Endogenous Growth

We analyse the effects of public debt in a basic endogenous growth model with productive public spending. We demonstrate that a discretionary policy in general violates the intertemporal government budget constraint along a balanced growth path. A balanced government budget gives a unique saddle point stable growth path. With a rule‐based policy, two saddle point stable balanced growth paths can occur, depending on the intertemporal elasticity of substitution of consumption and on the primary surplus policy. Higher debt goes along with smaller long‐run growth and we derive a condition such that a deficit‐financed increase in public spending raises the growth rate.     

On the mechanisms of achieving fiscal (un)sustainability: the case of Poland

Aim of this paper is to assess empirically the sustainability of budgetary policy in Poland in years 1992–2006. Our results show that structural surplus did respond to fiscal shocks in a way that stabilizes debt. However, the debt-stabilizing mechanism relied entirely on the revenue side, while the expenditures moved independently from debt and in a way that is close to non-stationarity. Given numerous bounds on increasing fiscal revenues, such an asymmetric mechanism of ensuring sustainability of Polish public finances is likely to fail if pressure on increasing public expenditures remains high over prolonged periods.     

Sustainability of Austrian public debt: a political economy perspective

Sustainability of Austrian public debt is investigated in the context of political objectives such as stabilizing the business cycle, increasing chances for being re-elected and implementing the ideologies of political parties. Several tests indicate that Austrian fiscal policies were sustainable in the period 1960–1974, while from 1975 on, public debt grew much more rapidly. The development of public debt in Austria seems to be driven not primarily by ideology, but by structural causes and a shift in the budgetary policy paradigm. We find some empirical evidence that governments in Austria dominated by one party run higher deficits than coalition governments. There are no indications of a political business cycle.     

Debt ceiling and fiscal sustainability in Brazil: A quantile autoregression approach

In this paper we investigate fiscal sustainability by using a quantile autoregression (QAR) model. We propose a novel methodology to separate periods of nonstationarity from stationary ones, allowing us to identify various trajectories of public debt that are compatible with fiscal sustainability. We use such trajectories to construct a debt ceiling, that is, the largest value of public debt that does not jeopardize long-run fiscal sustainability. We make an out-of-sample forecast of such a ceiling and show how it could be used by Policy makers interested in keeping the public debt on a sustainable path. We illustrate the applicability of our results using Brazilian data.     

Limits to government debt sustainability in OECD countries

The recent euro area sovereign debt crisis has shown the importance of market reactions for the sustainability of debt in advanced economies. This paper calculates endogenous government debt limits given the markets assessment of the probability to default. The estimated primary balance reaction function to growing debt has the “fiscal fatigue” property (a loosening fiscal effort makes the primary balance insufficient to support rising debt) at high debt levels. The combination of this feature of the primary balance reaction function with the market interest rate reaction to growing debt determines the government debt limit beyond which debt cannot be rolled over. An application to OECD countries over the period 1985 – 2013 with a model-based risk-premium shows that current debt limits are high for most of the OECD thanks to particularly low risk-free interest rates. It also shows for some countries that current debt levels are not sustainable without a change in government behaviour. Most importantly, the framework illustrates the state contingent nature of debt limits and therefore the vulnerability of governments to a change in macroeconomic conditions and to market reactions. Last, computations with an estimated interest rate reaction to public debt illustrate that debt limits are lower in the euro area than in other countries because of a sharper market interest rate reaction to rising debt.     

“Core” and “Periphery” in a Monetary Union: A Macroeconomic Policy Game

We develop a dynamic game model of a two-country monetary union to study strategic interactions between macroeconomic policy makers, namely the central bank and governments. In this union, the governments of participating countries pursue national goals when deciding on fiscal policies, whereas the common central bank’s monetary policy aims at union-wide objective variables. The union considered is asymmetric, consisting of a core, with lower initial public debt, and a periphery, with higher initial public debt. For a symmetric demand shock, we derive numerical solutions of the dynamic game between the governments and the central bank using the OPTGAME algorithm. We show that mildly active cooperative countercyclical policies dominate noncooperative solutions and a scenario of no policy intervention. Optimal policies call for a brief expansionary action to bolster the effects on output and a return to a small fiscal primary surplus as soon as the crisis is over until the targeted level of public debt is reached.     

A note on the sustainability of primary budget deficits

This note studies the sustainability of primary budget deficits in a situation where the public sector has also incurred debt to the private sector. It shows that if the rate of pure time preference is small relative to the population growth rate, if public consumption constitutes a modest fraction of output, and if the primary budget deficit is sufficiently small, then it is also sustainable, and the associated steady state is locally stable.     

The dynamics of Greek public debt – evidence from simultaneous and structural VAR models

The goal of the present article was to investigate not only the dynamics of the Greek public debt, but also the appropriate measures required for achieving fiscal consolidation. The empirical estimation is carried out using a macroeconomic data set spanning the period 1980–2008 and both the three-stage least squares (3SLS) methodological approach on a theoretical model and the structural VAR methodology to perform forecast tests and to calibrate the future paths of the public debt variable up to 2020. The results suggest that only a restrictive fiscal policy that simultaneously increases government revenues and reduces government expenditure could permit the country to achieve debt sustainability. The results also suggest that debt sustainability can be achieved faster when tax revenue policies are intensified. The results are expected to have important implications to policymakers for designing effective macroeconomic policy in terms of achieving sustainable levels of public debt.     

Is Abe's Fiscal Policy Ricardian? What Does the Fiscal Theory of Prices Mean for Japan?

The second arrow of Abenomics is flexible fiscal policy. However, it does not mean just fiscal stimulus as the Abe administration decided on the fiscal consolidation target of achieving a primary surplus by fiscal year 2020. Improving the primary balance implies making government debt more sustainable. Although the consumption tax rate was raised from 5% to 8% in April 2014, the Abe administration has decided twice to postpone increasing the consumption tax from 8% to 10%. In addition, a fiscal stimulus package was implemented. We use a Fiscal Stance Index to examine fiscal policy from the viewpoint of fiscal sustainability and a Markov switching model to examine fiscal policy from the viewpoint of the fiscal theory of the price level, and find that the Abe's fiscal stance is not Ricardian.