No Business Taxation Without Model Representation

The Global Integrated Monetary and Fiscal model (GIMF) is a multi-region, forward-looking, DSGE model developed at the International Monetary Fund for policy analysis and international economic research. This paper documents the incorporation of corporate income, cash-flow and destination based cash-flow taxes into the model. The analysis presented considers the transmission mechanism of these taxes and details how financial frictions interact with each of the taxes.

The book describes the difficulties of the current international corporate income tax system. It starts by describing its origins and how changes, such as the development of multinational enterprises and digitalization have created fundamental problems, not foreseen at its inception. These include tax competition—as governments try to attract tax bases through low tax rates or incentives, and profit shifting, as companies avoid tax by reporting profits in jurisdictions with lower tax rates. The book then discusses solutions, including both evolutionary changes to the current system and fundamental reform options. It covers both reform efforts already under way, for example under the Inclusive Framework at the OECD, and potential radical reform ideas developed by academics.

This paper uses a multi-region, forward-looking, DSGE model to estimate the macroeconomic impact of a tax reform that replaces a corporate income tax (CIT) with a destination-based cash-flow tax (DBCFT). Two key channels are at play. The first channel is the shift from an income tax to a cash-flow tax. This channel induces the corporate sector to invest more, boosting long-run potential output, GDP and consumption, but crowding out consumption in the short run as households save to build up the capital stock. The second channel is the shift from a taxable base that comprises domestic and foreign revenues, to one where only domestic revenues enter. This leads to an appreciation of the currency to offset the competitiveness boost afforded by the tax and maintain domestic investment-saving equilibrium. The paper demonstrates that spillover effects from the tax reform are positive in the long run as other countries’ exports benefit from additional investment in the country undertaking the reform and other countries’ domestic demand benefits from improved terms of trade. The paper also shows that there are substantial benefits when all countries undertake the reform. Finally, the paper demonstrates that in the presence of financial frictions, corporate debt declines under the tax reform as firms are no longer able to deduct interest expenses from their profits. In this case, the tax shifting results in an increase in the corporate risk premia, a near-term decline in output, and a smaller long-run increase in GDP.

The Global Integrated Monetary and Fiscal model (GIMF) is a multi-region, forward-looking, DSGE model developed by the Economic Modeling Division of the IMF for policy analysis and international economic research. This paper uses GIMF to illustrate when a destination-based cash-flow tax is equivalent to a combination of a consumption tax and a labor subsidy, as the latter combination have been advocated as proxies for the implementation of destination-based cash-flow taxes. The paper documents the conditions under which both types of taxes are identical and how the equivalence in terms of the real economy and tax revenue responses can be broken, namely after the introduction of finitely lived consumers that value government debt as net wealth (real economy) and the introduction of untaxed government expenditure (tax revenue).

This Selected Issues paper examines the impact of the Financing Law on both tax revenues and the economy. This paper assesses the main tax measures introduced by the law and their dynamic impact on tax revenue through macroeconomic transmission channels. Despite various reforms in recent years, non-oil tax revenues in Colombia remain comparatively low. The Financing Law should raise tax revenues in 2019 but will likely create shortfalls thereafter. The model-based simulations point to sizeable increases in private investment. The simulations suggest that the Law could boost medium-term growth by around 0.2 percent of GDP but will reduce tax revenues by over 1/2 percent of GDP in the medium term. The key channel is through a lower corporate burden through lower corporate income tax and allowing input credit for value added tax on capital goods. The analysis finds that the Law may boost medium-term growth by around 0.2 percent of GDP, but it may lead to future tax revenue shortfalls starting in 2020.

Produced since 2012, the IMF’s annual External Sector Report analyzes global external developments and provides multilaterally consistent assessments of external positions, including current accounts, real exchange rates, external balance sheets, capital flows, and international reserves, of the world’s largest economies, representing over 90 percent of global GDP. Chapter 1 discusses the evolution of global external positions in 2020, external developments throughout the COVID-19 crisis, and policy priorities for reducing excess imbalances over the medium term. Chapter 2 analyzes how the unprecedented fiscal support provided in response to the COVID-19 crisis has affected external positions at the individual and global level. It also focuses on how withdrawal of such support will impact external positions in the medium term. Chapter 3, “Individual Economy Assessments,” provides details on the different aspects of the overall external assessment and associated policy recommendations for 30 economies. This year’s report and associated external assessments are based on the latest vintage of the External Balance Assessment (EBA) methodology and on data and IMF staff projections as of June 30, 2021.

Yes, partly. This paper studies the potential role of structural reforms in improving Japan’s outlook using the IMF’s Global Integrated Monetary and Fiscal Model (GIMF) with newly-added demographic features. Implementation of a not-fully-believed path of structural reforms can significantly offset the adverse effect of Japan’s demographic headwinds — a declining and ageing population — on real GDP (by about 15 percent in the next 40 years), but would not boost inflation or contribute substantially to stabilizing public debt. Alternatively, implementation of a fully-credible structural reform program can contribute significantly to stabilizing public debt because of the resulting increase in inflation towards the Bank of Japan’s target, while achieving the same positive long-run effects on real GDP. If no reforms are implemented, severe demographic headwinds are expected to reduce Japan’s real GDP by over 25 percent in the next 40 years.

This report describes the world economic outlook as of April 2018, projecting that advanced economies will continue to expand above their potential growth rates before decelerating, while growth in emerging markets in developing economies will rise before leveling off. It details global prospects and policies, including risks to the forecast, and essential determinants of long-term economic growth: labor force participation in advanced economies, the declining share of manufacturing jobs globally and in advanced economies, and the process through which innovative activity and technological knowledge spread across national borders.