European heads of state are urged to continue supporting the implementation of a Financial Transaction Tax (FTT) to help address the human rights impacts of the ongoing economic crisis. The letter argues that an FTT could raise €40 billion annually for social services, discourage speculation, and fulfill governments' obligations to mobilize resources for economic and social rights. It also claims that an FTT could help prevent future crises by reducing excessive risk-taking in the financial sector and ensuring that the sector contributes its fair share to addressing the crisis impacts through taxation. Signatory organizations call on European governments to show leadership on this issue of human rights and economic justice.