Modelling Corporation Tax Revenue

Modelling Corporation Tax Revenue examines the revenue growth properties of corporate income taxes and how firms respond to changes in corporation tax. It provides a companion volume to the authors' Modelling Tax Revenue Growth, which explores the revenue growth and behavioural response properties of income and consumption taxes.

This book demonstrates how the reliable measurement of growth in tax revenues, both for a tax system and for its component taxes, is important for the design of tax policy. The need for discretionary changes in tax parameters (such as tax rates, income thresholds and allowances) is conditional on the expected automatic revenue growth generated by the tax system. The properties that generate these automatic revenue changes are referred to as the built-in flexibility, or revenue responsiveness, of the tax. This concept is the central focus of the analyses in this book, which provides an invaluable review and synthesis of analytical results and demonstrates how this concept can be applied in practice to yield estimates of revenue responsiveness in various countries. John Creedy and Norman Gemmell highlight how an understanding of the principal determinants of a tax system's responsiveness, and a knowledge of the relevant magnitudes, are important for the design and reform of tax policy where both revenue and redistributional considerations are typically central to the policy agenda. Providing extensions of analysis to cover indirect taxes, and direct and indirect taxes combined, as well as empirical applications for several countries, Modelling Tax Revenue Growth will be warmly welcomed by researchers and graduate students interested in public finance and government officials and those in international organisations interested in tax revenue growth.

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.

Governments need to know how much revenue their tax systems will raise, who will pay tax and what the effects on the incentives to save, work and invest will be. This book draws on the experience of tax modelling in western European economies and economies in transition to show the range of techniques involved from 'back of the envelope' calculations to sophisticated econometrics. Personal and corporate income taxes are considered, as well as the essential task of developing an appropriate database.

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.

"Providing extensions of analysis to cover indirect taxes, and direct and indirect taxes combined, as well as empirical applications for several countries, Modelling Tax Revenue Growth will be warmly welcomed by researchers and graduate students interested in public finance and government officials and those in international organisations interested in tax revenue growth."--BOOK JACKET.

This report presents studies and data available regarding the existence and magnitude of base erosion and profit shifting (BEPS), and contains an overview of global developments that have an impact on corporate tax matters.