Optimal taxation with endogenously incomplete debt markets

Empirical analyses of labor tax and public debt processes provide prima facie evidence for imperfect government insurance. This paper considers a model in which the government's inability to commit to future policies or to report truthfully its spending needs renders government debt markets endogenously incomplete. A method for solving for optimal fiscal policy under these constraints is developed. Such policy is found to be intermediate between that implied by the complete insurance (Ramsey) model and a model with exogenously incomplete debt markets. In contrast to optimal Ramsey policy, optimal policy in this model is consistent with a variety of stylized fiscal policy facts such as the high persistence of labor tax rates and debt levels and the positive covariance between government spending and the value of government debt sales.     

Fiscal policy over the real business cycle: A positive theory

This paper explores the implications of the political economy model of Battaglini and Coate (2008) [8] for the behavior of fiscal policy over the business cycle. The model predicts that fiscal policy is counter-cyclical with debt increasing in recessions and decreasing in booms. Public spending increases in booms and decreases during recessions, while tax rates decrease during booms and increase in recessions. In both booms and recessions, fiscal policies are set so that the marginal cost of public funds obeys a submartingale. When calibrated to the US economy, the model broadly matches the empirical distribution of debt and also its negative correlation with output. However, the predictions of pro-cyclical spending and counter-cyclical taxation do not find empirical support. The calibrated model generates the same fit of the data as a benevolent government model in which the government faces an exogenous lower bound on debt. Nonetheless, the two models have very different comparative static implications.     

Algeria: A three-sector macrofiscal model for debt sustainability and growth policy analysis

In this paper, we present a dynamic general equilibrium (DGE) model to address the macrofiscal vulnerabilities and the effects of fiscal policy on growth and employment in Algeria. We first discuss the baseline scenario over the period 2021–2040. According to our baseline results, without fundamental changes in fiscal policies, even relatively high growth will not be sufficient to put public debt on a sustainable path. We then conduct four experiments and assess their impact on fiscal accounts, growth, and unemployment: an increase in the efficiency of public spending on infrastructure investment, a gradual reduction in the share of noninterest government spending in GDP, the same gradual reduction in spending combined with a permanent increase in the share of investment in infrastructure in total noninterest government expenditure, and a composite fiscal reform program that combines these individual policies, respectively. The results suggest that public debt sustainability can be achieved, and growth and employment can be promoted, as long as an ambitious fiscal reform program involving tax, spending, and governance reforms is implemented. Importantly, our quantitative analysis shows that, with a well-designed fiscal program, there may be no trade-off between fiscal consolidation and economic growth.     

中国地方政府债务可持续、财政空间与经济增长*

根据Ghosh et al（2013）财政空间理论，利用2010—2019中国省级面板数据，对中国省级政府债务可持续、财政空间和经济增长之间的关系及其机制进行了研究。结果表明，中国个别省份出现了财政疲劳现象，要把控好债务风险雷区，但各地区债务限额存在异质性，在不损害可持续性的情况下，大部分地方政府有足够的“回旋余地”实施财政刺激政策。我国省级政府的财政空间和经济增长之间存在倒“U”型关系，即当政府负债率高于财政空间的临界点（或较低的财政空间）时开始阻碍经济增长，因此，需要通过降低政府负债率实现更高的增长。进一步研究发现，政府债务影响经济增长最重要的渠道是公共投资和私人投资，全要素生产率、储蓄和长期真实利率也是政府债务影响经济增长的重要渠道，而长期名义利率未能成为政府债务影响经济增长的渠道。     

ACHIEVING FISCAL BALANCE IN JAPAN*

Japan is aging and has the highest government debt‐to‐output ratio among advanced economies. In this article, we build a micro data‐based, large‐scale overlapping generations model for Japan in which individuals differ in age, gender, employment type, income, and asset holdings, and incorporate the Japanese pension rules. Using existing pension law, current fiscal policy, and medium variants of demographic projections, we produce future paths for government expenditures and tax revenues, with implications for government debt and the public pension fund. Additional pension reform, a higher consumption tax, and higher female labor force participation help achieve fiscal stability.     

Monetary policy and fiscal limits with no-default

This paper discusses monetary and fiscal policy interactions that stabilize government debt. Two distortions prevail in the model economy: income taxes and liquidity constraints. Possible obstructions to fiscal policy include a ceiling on the equilibrium debt-to-GDP ratio, zero or negative elasticity of tax revenues, and a political intolerance of raising tax rates. At the fiscal limit two mechanisms restore solvency: fiscal inflation, which reduces the real value of nominal debt, and open market operations, which diminish the size of government debt held by the private sector. Three regimes achieve this goal. In all regimes monetary policy is passive. In all regimes a muted tax response to government debt is consistent with equilibrium. The propensity of a fiscal authority to smooth output is found to determine what is an acceptable response (in the form of tax rate changes) to the level of government debt, while monetary policy determines the timing and magnitude of fiscal inflation. Impulse responses show that the inflation and tax hikes needed to offset a permanent shock to transfers are lowest under nominal interest rate pegs. In this regime, most of the reduction in the real value of government debt comes from open market purchases.     

Intertemporal Budget Policies and Macroeconomic Adjustment in Indebted Open Economies

This paper analyzes the role of government intertemporal budget policies in a growing open economy including nominal assets in the presence of an upward sloping supply of debt. This introduces transitional dynamics that influence the effects of government policy instruments on economic growth and the long term fiscal liability. It is shown that capital income taxes or a combination of tax‐cum‐expenditure or government expenditure alone can balance the long term intertemporal government budget constraint. However, those results are shown to depend critically upon the extent of distortion in capital flows brought about the upward sloping supply of debt.     

Fiscal position and the financing of productive government expenditures: an application to Latin America

Government spending on public infrastructure, education, and health care can increase economic growth. However, the appropriate financing depends on a country’s fiscal position. We develop a two-sector endogenous growth model to explore how variations in the composition and financing of government expenditures affect economic growth. We find that, when tax rates are moderate, funding public investment by raising taxes may increase long-run growth. If existing tax rates are high, public investment is only growth enhancing if funded by restructuring the composition of overall public spending. Additionally, public investment that is debt financed can have adverse effects on long-run growth due to the resulting increases in interest rates and debt-servicing costs.     

欧债危机后发达国家税制改革趋势及对中国的启示

欧债危机后,发达国家依靠紧缩的财政政策来弥补巨大的财政赤字和政府债务,各国也进入到了增税周期。发达国家通过强化税制公平、开征银行税、为中小企业和创新企业减税和加强征管的方法来增加税收收入。经济全球化下中国应顺应世界税制改革的趋势,借鉴成功经验完善中国的税收制度。同时一国的宏观经济形势是税制改革的基础,任何税制改革都不应脱离本国的实际情况。     

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.     

Fiscal multipliers in the Eurozone: an SVAR analysis

We compute the value of fiscal multipliers (for government primary expenditure, Income and wealth taxes and for Production and import taxes) in the Eurozone countries since the creation of the currency union (2000Q1-2016Q4), in order to understand how the values can vary according to the public debt level, the pace of economic growth, and the output gap. Imposing quarterly fiscal shocks, the results showed that government expenditure had a positive effect on output, with an annual accumulated multiplier of 0.44, whereas tax multipliers presented negative signs: the Income and wealth and the Production and import taxes stood at ?0.11 and ?0.55, respectively. Furthermore, the spending multiplier showed a higher value for countries with lower levels of public debt, during recessions, and in countries with negative output gaps. On the other hand, tax shocks seemed to be recessive in highly indebted countries and those facing positive output gaps.     

Public debt in a basic endogenous growth model

We work out the mechanism that makes public debt affect the allocation of resources in the long-run. To do so we analyze an AK growth model with elastic labor supply and a government sector. The government levies a distortionary income tax and issues bonds to finance lump-sum transfers and non-distortionary public spending. We show that the long-run growth rate is the smaller the higher the debt ratio if the government adjusts public spending to fulfill its inter-temporal budget constraint. If the government adjusts lump-sum transfers the public debt ratio does not affect the balanced growth rate.     

Financial markets’ behavior around episodes of large changes in the fiscal stance

Using a panel of OECD countries from 1960 to 2002, this paper shows that interest rates, particularly those of long-term government bonds, decrease when countries’ fiscal position improves and increase around periods of budget deteriorations. Stock market prices surge around times of substantial fiscal tightening and plunge in periods of very loose fiscal policy. In addition, the paper shows that results depend on countries’ initial fiscal conditions and on the type of fiscal consolidations: Fiscal adjustments that occur in country-years with high levels of government deficit, that are implemented by cutting government spending, and that generate a permanent and substantial decrease in government debt are associated with larger reductions in interest rates and increases in stock market prices.     

Ricardian equivalence and fiscal distortions in the Dominican Republic

This paper tests the Ricardian equivalence hypothesis in the context of the Dominican Republic (DR). The results rejected the Ricardian theorem but a weaker version is shown to have significant implications for the DR. If the government borrows to increase spending, private consumption is crowded out and the economy will suffer in the long run. The outcome is worst if the government borrows to deliver a tax cut. In particular, for every RD$ 1.00 of additional debt incurred to finance government primary spending, private consumption and gross domestic product (GDP) fall by a meaningful RD$ 2.15 and RD$ 1.15 respectively. If the debt is used to finance the tax cut, the fall is RD$ 2.15 in both consumption and output. Interestingly, if the government uses taxes to cover a budget deficit, the effect is neutral and consistent with Ricardian equivalence. The paper argues that fiscal distortions are in part responsible for these multipliers. Distortions are estimated to be 21 % coming from different sources including taxes evasion and fiscal drainage. These findings suggest that the DR could benefit from either reducing the level of fiscal distortions or the size and scope of the Dominican government. If, however, the government continues to pursue an active fiscal role under the current environment, it will generate an unnecessary burden to consumption and economic growth.     

Countercyclical taxes in a monopolistically competitive environment

In the context of a neoclassical growth model with monopolistic competition, this paper studies the stabilizing effects of countercyclical tax policy when the income tax rate has an additional role of financing government budget deficits. Consistent with the conventional wisdom, countercyclical taxes generally reduce aggregate volatility, unless the fiscal response to debt accumulation is weak. The presence of monopoly power enhances these effects. Even when automatic stabilizers successfully stabilize business cycle fluctuations, countercyclical taxes are welfare inferior, due to reduced precautionary saving motives. While, if the fiscal response to debt is weak and countercyclical tax policy destabilizing, the increased precautionary saving motive is not welfare enhancing as the asset accumulated is government debt rather than capital. These results are generally robust. Nominal inertia may, however, dominate the precautionary saving mechanism.     

Starving the beast? Intra-generational conflict and balanced budget rules

A balanced budget requirement does not only prevent fiscal policy makers from smoothing tax distortions but also affects their preferred choice of government spending. The paper analyzes the conditions under which groups opposed to government spending might want to implement a balanced budget requirement in order to induce the government to spend less. It shows that relaxing a balanced budget requirement need not be associated with higher government spending.     

Optimal Sovereign Debt for an Overdebted Country

In this study, the role of debt maturity is analysed in a framework that blends a number of key macro‐economic factors with a process of estimating an optimal debt maturity maximising net present value. The purpose is to reduce the real value of government liabilities for a highly indebted country, as for example in the case of Greece, over a 35‐year period. The conclusion that emerges is that management of debt maturity is an essential component of the equilibrium policy and, as such, it can play an important role both in implementing tax smoothing programmes and in reducing costs associated with debt financing.     

弱势下的扩张:中国财政状况和政策取向分析

目前以预算内财政收入计算的财政规模很低,但这一指标并没有全面反映我国财政的规模,真实的财政规模其实相当大。用“积极的财政政策和稳健的货币政策”概括1998年以来的宏观调控有失公允,为确保经济增长,中央政府实际上调动了包括货币政策在内的所有政策资源刺激经济。目前,我国债务规模在可控范围之内,真正决定积极财政政策取向的是财政项目的效益等因素,我国积极财政政策已经转向谨慎。正在实行的财政政策有两个显著特点,一是推进公共财政体系建设,这是由我国经济体制改革的总体目标设定的;二是在实行积极财政政策的同时,增加税收,这反映了财政在加强自身建设的同时(提高财政两个比重),竭力完成宏观调控目标的努力。这两个看似矛盾的政策,统一在当前的财政政策中,恰当地反映了转型期财政必须应对的多重目标。     

Government size,composition of public spending and economic growth in Brazil

The performance of the fiscal policy is largely affected by the relationship between government size, composition of public spending and economic growth. We use a theoretical framework to find optimal relations among these variables and confront them with a panel data for the Brazilian states. Private capital and government spending are substitute inputs in production as the Brazilian states require provision of public spending to fill gaps in the underdeveloped private sector. Public investment and current government expenditures are combined in fixed ratios in the overall government spending due to strong rigidity of the public budget. The optimal share of public investment is considerably lower than current expenditures, as occurs in developing countries characterized by low economic dynamism. Finally, the average tax burden from the data is below the estimated optimal level, meaning that there is space for increasing tax rate without harming economic growth for some Brazilian states.     

未来25年全球政府债务展望:对经济和公共政策的影响

文章探讨了主要经济体以及全世界的长期财政前景。文章认为,如果当前的税率或政府的退休和卫生保健惠民工程没有发生变化,未来25年政府债务规模将在大多数发达经济体和许多新兴经济体中增长到危险和不可持续的水平。虽然对于主要的经济体来说,在经济增长不出现任何大的、出乎意料的负面震荡的情况下,危险区很可能还比较远,大约会发生在今后10～25年时间内,但如果允许政府债务继续增长,利率最终将上升,从而挤出生产性投资,降低经济增长率。严重的经济下滑有可能迅速推动政府债务水平上升到危险区间,并极大地增加爆发危机的可能性。因此,政策制定者现在就应该开始计划进程,将政府债务调整到可持续的轨道。当前计划中的预算削减应该延迟到2013～2015年执行,额外的预算削减措施也应该从2016年开始实行。此外,应该立刻在控制退休和医疗成本方面达成一致,认真解决这个威胁到增长的问题。