The GTED flagship report of 2021 highlights the lack of transparency in tax expenditures worldwide. Governments and society need to know how public funds are allocated, and tax expenditures must be subject to sound cost-benefit analysis. The report emphasizes the importance of reforming or abolishing tax breaks that do not provide adequate public value for money. The COVID-19 pandemic has made it even more critical for governments to reform tax expenditures to address their growing funding needs. The GTED database can contribute to these efforts by providing a comprehensive overview of worldwide tax expenditures, adding a key dimension to policy debates on tax systems and tax reforms in the future.