---
kind: "unit"
title: "31"
title_heading: "Money and Finance: Treasury"
key: "subtB/chII/subchA/part363"
level: "part"
label: "Part 363"
heading: "Regulations Governing Securities Held in Treasurydirect"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/31/subtB-chII-subchA-part363"
sections_count: 123
---

# Part 363 — Regulations Governing Securities Held in Treasurydirect

Title 31 C.F.R. — 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

## Contents

- [Subpart A — General](/cfr/31/subtB-chII-subchA-part363-subpartA.md)
- [Subpart B — General Provisions Governing Securities Held in TreasuryDirect](/cfr/31/subtB-chII-subchA-part363-subpartB.md)
- [Subpart C — Book-Entry Savings Bonds Purchased Through TreasuryDirect](/cfr/31/subtB-chII-subchA-part363-subpartC.md)
- [Subpart D — Zero-Percent Certificate of Indebtedness](/cfr/31/subtB-chII-subchA-part363-subpartD.md)
- [Subpart E — Conversion of a Definitive Savings Bond](/cfr/31/subtB-chII-subchA-part363-subpartE.md)
- [Subpart F — Marketable Treasury Securities](/cfr/31/subtB-chII-subchA-part363-subpartF.md)
- [Subpart G — Subpart G [Reserved]](/cfr/31/subtB-chII-subchA-part363-subpartG.md)
- [Subpart H — Miscellaneous](/cfr/31/subtB-chII-subchA-part363-subpartH.md)