The Gold Reserve Transparency Act of 2025 directs the Comptroller General to contract with a qualified, independent, third-party auditor to conduct a comprehensive assay, inventory, and audit of all United States gold reserves. This initial audit must be completed within nine months of the bill's enactment, with subsequent audits mandated every five years. The audit's scope includes gold in "deep storage," an analysis of physical security, and a full accounting of all encumbrances, sales, purchases, and disbursements related to gold reserves over the past 50 years. Furthermore, the auditor must account for all gold in which the U.S. Government, including the Federal Reserve, has a direct or indirect interest, even if held by third parties like the IMF or foreign central banks. Following each audit, the Comptroller General is required to issue a detailed report to Congress and the Secretary of the Treasury, making it publicly available online with only limited redactions for physical security details. To ensure thoroughness, the Comptroller General and the external auditor will have full access to all relevant facilities and records, enforceable by subpoena, and all federal agencies must provide necessary information without redactions.