The Office of the Comptroller of the Currency (OCC) is issuing interim guidelines (Supplemental Guidelines) establishing Year 2000 standards for safety and soundness for national bank transfer agents and brokers or dealers pursuant to section 39 of the Federal Deposit Insurance Act (FDI Act). Last year, the OCC, together with the other member agencies of the Federal Financial Institutions Examination Council (FFIEC), published joint Guidelines (Year 2000 Guidelines) establishing standards for safety and soundness that insured depository institutions must follow to ensure the Year 2000 readiness of their mission-critical systems. These Supplemental Guidelines complement the Year 2000 Guidelines by describing two essential steps that national banks and, in certain cases, national bank operating subsidiaries, and Federal branches that are subject to the provisions of section 39 of the FDI Act must take to ensure the Year 2000 readiness of their transfer agent and broker or dealer automated systems.