Tax Reforms And Fiscal Shock Smoothing

This paper examines the role of tax policy reforms in enhancing fiscal shock smoothing in a panel of 13 OECD economies during the period 1980-2017. The results suggest that tax reforms, in particular those that broaden the tax base, significantly enhance the ability of fiscal policy to mitigate the impact of growth shocks on disposable income. We find that the magnitude of shock smoothing increases from an average of 2 percent to 3-31⁄2 percent following the reform. The effects are considerably higher for tax base than tax rate changes, and also higher for indirect tax than direct tax changes. The effects are symmetric—that is, the increase in shock smoothing following a reform expanding the tax base (rate) is similar to the decline in shock smoothing after a reform narrowing the tax base (rate). Tax elasticity, collection efficiency, and the progressivity of the tax system are important channels through which tax reforms affect fiscal stabilization.

This paper examines the role of tax policy reforms in enhancing fiscal shock smoothing in a panel of 13 OECD economies during the period 1980-2017. The results suggest that tax reforms, in particular those that broaden the tax base, significantly enhance the ability of fiscal policy to mitigate the impact of growth shocks on disposable income. We find that the magnitude of shock smoothing increases from an average of 2 percent to 3-31⁄2 percent following the reform. The effects are considerably higher for tax base than tax rate changes, and also higher for indirect tax than direct tax changes. The effects are symmetric—that is, the increase in shock smoothing following a reform expanding the tax base (rate) is similar to the decline in shock smoothing after a reform narrowing the tax base (rate). Tax elasticity, collection efficiency, and the progressivity of the tax system are important channels through which tax reforms affect fiscal stabilization.

If permanent output is uncertain, tax smoothing can be perilous: both debt levels and tax rates are difficult to stabilize and may drift upwards. One practical remedy would be to target the debt. However, our simulations confirm that such a policy would require undesirably volatile fiscal adjustments and may inhibit countercyclical borrowing. An alternative would be to link the primary surplus not only to the debt ratio (like tax smoothing) but also to its volatility, thus preempting further adjustments while gradually reducing the debt.

Many countries face the challenge of raising additional tax revenues without hurting economic growth. Comprehensive, cross-country information on the revenue impact of tax policy changes can thus support informed decision-making on viable reforms. We assess the likely revenue impact of various tax policy changes based on a sample of 21 advanced and emerging market economies, using granular information from the IMF Tax Policy Reform Database v.4.0. Our findings suggest that the revenue yield of a tax policy change varies significantly depending on the tax instrument adopted (e.g., VAT or personal income tax) and the nature of the change (i.e., rate, base). For example, in our sample, base-broadening changes to personal and corporate income taxes as well as to excise and property taxes have generally a more significant and long-lasting revenue yields than rate changes. By contrast, rate changes appear to have a relatively more significant revenue impact in the case of VAT and social security contributions. We also observe an asymmetry in the revenue impact of most tax policy measures when controlling for the direction of tax changes (i.e., its significance varies depending on whether taxes are increased or decreased). While our results are based on qualitative information of tax policy changes (i.e., dummy variables), the revenue yields of rate measures are not materially different from those that would be obtained using quantitative information on the size of the change.

Chapter 1 argues that fiscal policies are at the forefront of responding to the COVID-19 pandemic. Fiscal measures can save lives, protect the most-affected people and firms from the economic impact of the pandemic, and prevent the health crisis from turning into a deep long-lasting slump. A key priority is to fully accommodate spending on health and emergency services. Global coordination is for a universally low-cost vaccine and to support countries with limited health capacity. Large, temporary and targeted support is urgently needed for affected workers and firms until the emergency abates. As the shutdowns end, broad-based, coordinated fiscal stimulus—where financing conditions permit—will become more effective in fostering the recovery. Chapter 2 argues that fiscal policies are at the forefront of facilitating an economic recovery from the COVID-19 pandemic once the Great Lockdown ends. Policymakers can achieve this objective with IDEAS: Invest for the future—in health systems, infrastructure, low carbon technologies, education, and research; adopt well-planned Discretionary policies that can be deployed quickly; and Enhance Automatic Stabilizers, which are built-in budgetary tax and spending measures that automatically stabilize incomes and consumption. Importantly, improving unemployment benefit systems and social safety nets can protect household incomes from adverse shocks and strengthen resilience against future epidemics. Over the past decade, state-owned enterprises (SOEs) have doubled in importance among the world’s largest corporations. They often deliver basic services such as water, electricity, and loans for families and small businesses. At their best, they can help promote higher economic growth and achieve development goals. However, many are a burden to taxpayers and the economy. Chapter 3 discusses what governments can do to get the most out of SOEs. This includes ensuring the firm’s managers have the right incentives and there is effective oversight. It also requires a high degree of transparency of their activities.

This paper explores how fiscal policy can affect medium- to long-term growth. It identifies the main channels through which fiscal policy can influence growth and distills practical lessons for policymakers. The particular mix of policy measures, however, will depend on country-specific conditions, capacities, and preferences. The paper draws on the Fund’s extensive technical assistance on fiscal reforms as well as several analytical studies, including a novel approach for country studies, a statistical analysis of growth accelerations following fiscal reforms, and simulations of an endogenous growth model.

The pamphlet (which updates the 1995 Guidelines for Fiscal Adjustment) presents the IMF’s approach to fiscal adjustment, and focuses on the role that sound government finances play in promoting macroeconomic stability and growth. Structured around five practical questions—when to adjust, how to assess the fiscal position, what makes for successful adjustment, how to carry out adjustment, and which institutions can help—it covers topics such as tax policies, debt sustainability, fiscal responsibility laws, and transparency.

This paper reviews the theoretical and empirical literature on the effectiveness of fiscal policy. The focus is on the size of fiscal multipliers, and on the possibility that multipliers can turn negative (i.e., that fiscal contractions can be expansionary). The paper concludes that fiscal multipliers are overwhelmingly positive but small. However, there is some evidence of negative fiscal multipliers.