R&D tax incentives have become a widely used policy tool to promote business R&D. How do they shape firms’ incentives to invest in R&D? This paper contributes a methodology to construct forward-looking effective tax rates for an R&D investment that reflect the value of expenditure-based R&D...

This paper presents an update to the Economic Impact Assessment of Amount A of Pillar One of the Two Pillar Solution to Address the Tax Challenges Arising from the Digitalisation of the Economy. The revised assessment is based on Amount A as detailed in the text of the Multilateral Convention to...

This paper simulates the impact of the global minimum corporate tax rate (GMCTR) in Uganda by estimating the difference between the mechanical and the behavioural changes in tax revenue. Overall, implementation of GMCTR will increase tax revenue, and the revenue increase is inversely...

The WTO Agreement on Government Procurement (GPA) is a plurilateral Agreement, meaning that it comprises only a subset of the full Membership of the WTO. Currently, a number of WTO Members that are not Parties to the Agreement either are actively seeking accession to it, have commitments to...

This paper identifies and analyses some key challenges that OECD and partner economies may face over the coming 50 years if underlying global trends relating to growth, trade, inequality and environmental pressures prevail. For example, global growth is likely to slow and become increasingly...

How much companies pay in corporate income taxes is often better captured by effective tax rates (ETRs) rather than by statutory ones. Economists further distinguish between those modelled using the law - forward-looking ETRs - and those estimated from actual data on companies' profits and taxes...

This paper documents the rise of corporate tax-base narrowing measures in the EU using a novel dataset covering both tax rate and tax base reforms implemented between 2014 and 2022. Our findings indicate a shift away from the ’cut rate – broaden base’ approach, as governments increasingly...