European Union

Revised version, December 2025

Tax expenditures (TEs) are benefits granted through the tax system that lower government revenue and the tax liability of beneficiaries. Governments worldwide use TEs to pursue different policy goals such as attracting investment, boosting innovation and mitigating inequality. At the same time, TEs are costly: according
to the Global Tax Expenditures Database (GTED), the worldwide average over the 1990-2023 period is 3.7 percent of GDP and 23.0 percent of tax revenue
(Redonda et al., 2025). When ill designed, they can be ineffective in reaching their stated goals. They can also be highly distortive and trigger negative externalities.
Yet, despite the fact that TEs have similar effects on public budgets as direct spending programmes, the lack of transparency in the TE field is striking, as only
116 out of 218 jurisdictions have reported on TEs at least once since 1990.1 In addition, the quality, regularity and scope of such reports are highly heterogeneous and, in many cases, do not allow to engage in meaningful discussions on the effectiveness and efficiency of TEs. The Global Tax Expenditures Transparency Index (GTETI) is the first comparative assessment of TE reporting covering jurisdictions worldwide. It provides a systematic framework to rank jurisdictions according to the regularity, quality and scope of their TE reports, and seeks to increase transparency and accountability in the TE field. Note that countries are not scored, ranked or compared on the size of revenue forgone reported, nor on the quality of their TE policy as such. This new version of the Companion Paper introduces the GTETI, outlines the updates made to the index since December 2024, and provides an in-depth explanation of its five dimensions and 25 indicators. It also discusses the rationale, scope, methodology, and assumptions
underpinning the GTETI assessment process. The Companion Paper explains the limitations and issues users should bear in mind when consulting the index, which is publicly available free of charge on the Tax Expenditures Lab website,  www.taxexpenditures.org.

Revised version, December 2025

Tax expenditures (TEs) are benefits granted through the tax system that lower government revenue and the tax liability of beneficiaries. Governments worldwide use TEs to pursue different policy goals such as attracting investment, boosting innovation and mitigating inequality. At the same time, TEs are costly: according
to the Global Tax Expenditures Database (GTED), the worldwide average over the 1990-2023 period is 3.7 percent of GDP and 23.0 percent of tax revenue
(Redonda et al., 2025). When ill designed, they can be ineffective in reaching their stated goals. They can also be highly distortive and trigger negative externalities.
Yet, despite the fact that TEs have similar effects on public budgets as direct spending programmes, the lack of transparency in the TE field is striking, as only
116 out of 218 jurisdictions have reported on TEs at least once since 1990.1 In addition, the quality, regularity and scope of such reports are highly heterogeneous and, in many cases, do not allow to engage in meaningful discussions on the effectiveness and efficiency of TEs. The Global Tax Expenditures Transparency Index (GTETI) is the first comparative assessment of TE reporting covering jurisdictions worldwide. It provides a systematic framework to rank jurisdictions according to the regularity, quality and scope of their TE reports, and seeks to increase transparency and accountability in the TE field. Note that countries are not scored, ranked or compared on the size of revenue forgone reported, nor on the quality of their TE policy as such. This new version of the Companion Paper introduces the GTETI, outlines the updates made to the index since December 2024, and provides an in-depth explanation of its five dimensions and 25 indicators. It also discusses the rationale, scope, methodology, and assumptions
underpinning the GTETI assessment process. The Companion Paper explains the limitations and issues users should bear in mind when consulting the index, which is publicly available free of charge on the Tax Expenditures Lab website,  www.taxexpenditures.org.

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Spokespersons for Parliament and for the political groups will hold a briefing on the 15 - 18 December plenary session, on Friday at 11.00 in Parliament’s Anna Politkovskaya press room.

Source : © European Union, 2025 - EP

Spokespersons for Parliament and for the political groups will hold a briefing on the 15 - 18 December plenary session, on Friday at 11.00 in Parliament’s Anna Politkovskaya press room.

Source : © European Union, 2025 - EP

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