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Building on an approach pioneered in the OECD’s Taxing Energy Use for Sustainable Development report, this paper develops a methodology to estimate effective carbon rates net of pre-tax fossil fuel support: the Net Effective Carbon Rates (Net ECR). This exercise is made possible by combining the two OECD databases: the Taxing Energy Use and Effective Carbon Rates database (the backbone of the newly established OECD series on Carbon Pricing and Energy Taxation) and the Inventory of Support Measures for Fossil Fuels. The paper then explores potential use cases of this new indicator. In particular, it explains how the Net ECR can be used to calculate fossil fuel support (FFS) against external carbon pricing benchmarks and why such an approach facilitates comparisons of FFS across countries and over time. The paper’s conclusions include avenues for future research.

This report compiles comparable tax revenue statistics over the period 1990-2021 for 27 Latin American and Caribbean economies. Based on the OECD Revenue Statistics database, it applies the OECD methodology to countries in Latin America and the Caribbean (LAC) to enable comparison of tax levels and tax structures on a consistent basis, both among the economies of the region and with other economies. The report includes two special features examining the fiscal revenues from non-renewable natural resources in the LAC region in 2021 and 2022 as well as the measurement and evaluation of tax expenditures in Latin America. This publication is jointly undertaken by the OECD Centre for Tax Policy and Administration, the OECD Development Centre, the Inter-American Center of Tax Administrations (CIAT), the Economic Commission for Latin America and the Caribbean (ECLAC) and the Inter-American Development Bank (IDB).

This report reflects on the implications of the evolving international tax policy landscape for international tax co-operation, and provides an update on a report published in May 2022, 'Tax Co-operation for the 21st Century'. It analyses how the principles set out in the 2022 Report are being incorporated by the members of the OECD/G20 Inclusive Framework on BEPS into the design of the Two-Pillar Solution to Address the Tax Challenges Arising from the Digitalisation of the Economy, focusing on Amount A and the GloBE Rules. In addition, it shows that the principles of the 2022 Report beyond corporate income tax are being translated into action, such as with technology-based solutions for effectively collecting and using information for personal income tax purposes. Finally, it notes some of the recent developments in capacity building, as called for by the 2022 Report, and identifies some of the work that remains to be done to ensure that there are lasting outcomes that can assist in meeting the Sustainable Development Goals. The report provides potential areas of consideration and next steps to continue efforts to enhance international co-operation in the context of increasingly co-ordinated international rules. This report was prepared by the OECD to inform the discussions at the May 2023 meeting of G7 Finance Ministers and Central Bank Governors, at the request of the G7 Japanese Presidency.

This annual publication provides details of taxes paid on wages in OECD countries. This year’s edition focuses on the impact of recent inflation on labour taxation in the OECD and how countries adjust their tax systems in response. For the year 2022, the report also examines personal income taxes and social security contributions paid by employees, social security contributions and payroll taxes paid by employers, and cash benefits received by workers. It illustrates how these taxes and benefits are calculated in each member country and examines how they impact household incomes. The results also enable quantitative cross-country comparisons of labour cost levels and the overall tax and benefit position of single persons and families on different levels of earnings. The publication shows average and marginal effective tax rates on labour costs for eight different household types, which vary by income level and household composition (single persons, single parents, one or two earner couples with or without children). The average tax rates measure the part of gross wage earnings or labour costs taken in tax and social security contributions, both before and after cash benefits, and the marginal tax rates the part of a small increase of gross earnings or labour costs that is paid in these levies.

This report presents policy reform options to support Lithuania in meeting its climate neutrality target. It takes stock of Lithuania’s current and planned climate policies and assesses their potential for meeting the country’s climate ambitions. The report details the results of modelling carried out to assess the effectiveness of different policy scenarios, an analysis of carbon pricing and the role of innovation, an assessment of financial needs in the transition to net zero, and an analysis of the distributional implications of carbon pricing. Bringing together these findings the report offers recommendations for policy reform, highlighting the importance of setting price signals complemented by innovation support, as well as the potential of revenue recycling options in alleviating distributional concerns.

Tax incentives that provide preferential tax treatment to the incomes arising from research and development (R&D) and innovation activities, such as intellectual property regimes, have become widespread in recent years. This paper describes the key design features of tax incentives available in 49 member countries of the Inclusive Framework on BEPS (IF), covering all OECD countries and EU countries. It outlines differences in the design of such incentives that may translate into differences in the tax benefits offered. The information collected and reported in this paper is a first step towards a more systematic comparison of tax support policies for R&D and Innovation.

This report examines effective communication strategies that tax administrations can use to assist small and medium-sized enterprises (SMEs) in fulfilling their tax obligations. It analyses the various tools and channels available to tax administrations and their respective roles. The report draws on examples from the OECD Forum on Tax Administration members and includes two detailed case studies. The report was drafted by officials from the United Kingdom’s HM Revenue and Customs, with support from the OECD Forum on Tax Administration's Community of Interest on SMEs.