The International Nuclear Energy Financing Act of 2025 aims to bolster global support for nuclear energy through international financial institutions. It directs the United States to use its influence at organizations like the World Bank and the European Bank for Reconstruction and Development to advocate for the removal of existing prohibitions against financial and technical assistance for nuclear energy projects. This advocacy specifically targets nuclear technologies that meet or exceed the quality standards prevalent in the United States or its allied countries, while also promoting increased internal capacity-building within these institutions to assess and deliver such assistance. Furthermore, the bill mandates the establishment of " Nuclear Energy Assistance Trust Funds " at these international financial institutions. The primary purposes of these trust funds are to provide financial and technical assistance for the generation and distribution of nuclear energy in borrowing countries. They are designed to ensure competitive financing, counter credit extended by non-OECD countries, and exclusively support nuclear technologies adhering to U.S. or allied quality standards. These funds will also strengthen the institutions' capacity to evaluate and implement nuclear energy projects. The legislation acknowledges nuclear power as a crucial emissions-free energy source, noting the significant global expansion efforts by countries like China and Russia, which often involve technologies with higher safety risks. To ensure transparency and accountability, the Chairman of the National Advisory Council on International Monetary and Financial Policies will be required to report annually for seven years on the progress made in promoting multilateral development bank assistance for nuclear energy and the activities of any established trust funds. The Act and its amendments are set to expire ten years after its enactment.