{"data":{"id":"us/31-cfr-357.0","jurisdiction":"us","citation":"31 CFR 357.0","heading":"Book-entry systems.","body":"(a) Treasury securities. Treasury securities are maintained in one of the following book-entry systems:\n(1) Commercial book-entry system. The commercial book-entry system is the book-entry system in which Treasury securities are held in a tiered system through securities intermediaries such as financial institutions or brokerage firms. A Treasury security is maintained in the commercial book-entry system if it is credited by a Federal Reserve Bank to a Participant's Securities Account. The regulations governing the commercial book-entry system are found at subpart B of this part, and are referred to as Treasury/Reserve Automated Debt Entry System (TRADES).\n(2) Legacy Treasury Direct ®. The Legacy Treasury Direct system is a non-Internet-based book-entry system maintained by Treasury for purchasing and holding marketable Treasury securities as book-entry products. A Treasury security is maintained in Legacy Treasury Direct if it is credited to a Legacy Treasury Direct account as described in § 357.20 of this part. Treasury securities are held directly by the Department of the Treasury in accounts maintained in the investor's name. A Legacy Treasury Direct account may be accessed through a designated Federal Reserve Bank or the Bureau of the Fiscal Service. See subpart C of this part for rules pertaining to Legacy Treasury Direct.\n(3) TreasuryDirect ®. TreasuryDirect is a book-entry, online system maintained by the Department of the Treasury for purchasing and holding eligible marketable Treasury securities, United States Savings Bonds, and certificates of indebtedness in electronic form as a computer record on the books of Treasury. The regulations governing TreasuryDirect are found at 31 CFR part 363.\n(b) Transferability between Legacy Treasury Direct and other systems. A Treasury security maintained in Legacy Treasury Direct may be transferred to an account in TRADES or to an account in TreasuryDirect in accordance with § 357.22(a). Securities may not be transferred to Legacy Treasury Direct from other systems.","path":["Title 31—Money and Finance: Treasury","Subtitle B—Regulations Relating to Money and Finance","CHAPTER II—FISCAL SERVICE, DEPARTMENT OF THE TREASURY","SUBCHAPTER A—BUREAU OF THE FISCAL SERVICE","PART 357—REGULATIONS GOVERNING BOOK-ENTRY TREASURY BONDS, NOTES AND BILLS HELD IN TREASURY/RESERVE AUTOMATED DEBT ENTRY SYSTEM (TRADES) AND LEGACY TREASURY DIRECT","Subpart A—General Information"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-31.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:25Z","sha256":"eb32781b00a933e96c3fefb6c20d1f87b167b1f7e55ed69f1ea450cdfbd8d517","source_id":"us-cfr","stale":true,"prev":"us/31-cfr-appendix-d-to-part-356","next":"us/31-cfr-357.1"},"notice":"GroundRules: Original legal text. Not legal advice."}