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International Monetary Fund. Fiscal Affairs Dept.
It is generally difficult to measure revenue not collected due to noncompliance, but a growing number of countries now regularly produce and publish estimated revenue losses. Good tax gap analysis enables the detection of changes in taxpayer behavior by consistent estimates over time. This Technical Note sets out the theoretical concepts for personal income tax (PIT) gap estimation, the different measurement approaches available, and their implications for the scope and presentation of statistics. The note also focuses on the practical steps for measuring the PIT gap by establishing a random audit program to collect data, and how to scale findings from the sample to the population.
International Monetary Fund. Fiscal Affairs Dept.
This technical note addresses the following questions: • What are the main ways in which different countries assess and collect personal income tax (PIT) and social insurance contributions (SIC) liabilities (Section I)? • What is the case for transferring responsibility for a country’s SIC collection from its social insurance agency(ies) to its tax authority (Section II)? • What changes does such integration of collection functions involve (Section III)? • Are there any lessons from international experience to guide such reforms (Section IV)? • How to build on these lessons when planning a transfer of collection functions (Section V)? • Are there any beneficial alternatives to full integration of functions (Section VI)?
Mr. Zamid Aligishiev, Mr. Giovanni Melina, and Luis-Felipe Zanna
This note is a user’s manual for the DIGNAR-19 toolkit, an application aimed at facilitating the use of the DIGNAR-19 model by economists with no to little knowledge of Matlab and Dynare via a user-friendly Excel-based interface. he toolkit comprises three tools—the simulation tool, the graphing tool, and the realism tool—that translate the contents of an Excel input file into instructions for Matlab/Dynare programs. These programs are executed behind the scenes. Outputs are saved in a separate Excel file and can also be visualized in customizable charts.
Ernesto Crivelli, Ruud A. de Mooij, J. E. J. De Vrijer, Mr. Shafik Hebous, and Mr. Alexander D Klemm
This paper aims to contribute to the European policy debate on corporate income tax reform in three ways. First, it takes a step back to review the performance of the CIT in Europe over the past several decades and the important role played by MNEs in European economies. Second, it analyses corporate tax spillovers in Europe with a focus on the channels and magnitudes of both profit shifting and CIT competition. Third, the paper examines the progress made in European CIT coordination and discusses reforms to strengthen the harmonization of corporate tax policies, in order to effectively reduce both tax competition and profit shifting.
John Brondolo and Mark Konza
This technical note and manual (TNM) addresses the following questions: (1) What are the main challenges in administering the value-added tax on imported digital services and the measures that countries have introduced to address the challenges?; (2) What are the main challenges in administering the value-added tax on low-value imported goods and the measures that countries have introduced to address the challenges? ;and (3) What are the key tasks in implementing the measures for improving the administration of the value-added tax on imported digital services and low-value imported goods?
International Monetary Fund. Fiscal Affairs Dept.

Abstract

This report overviews countries fiscal actions in response to COVID-19 and discusses how governments policies should adapt to get ahead of the pandemic and set the stage for a greener, fairer, and more durable recovery. Global vaccination should be scaled up as it can save lives and will eventually pay for itself with stronger employment and economic activity. Until the pandemic is brought under control globally, fiscal policies must remain flexible and supportive, while keeping debt at a manageable level over the long term. Governments also need to adopt comprehensive policies, embedded in medium-term frameworks, to tackle inequalities—especially in access to basic public services—that were exacerbated by the COVID-19 pandemic and may cause income gaps to persist. Investing in education, healthcare and early childhood development and strengthening social safety nets financed through improved tax capacity and higher progressivity, can strengthen lifetime opportunities, improve trust, and contribute to more social cohesion.

Ruud A. de Mooij, Mr. Alexander D Klemm, and Ms. Victoria J Perry

Abstract

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.