31 CFR § 363.164 - Is a converted savings bond eligible to be converted back into a definitive bond?

---
identifier: "/us/cfr/t31/s363.164"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "31 CFR § 363.164 - Is a converted savings bond eligible to be converted back into a definitive bond?"
title_number: 31
title_name: "Money and Finance: Treasury"
section_number: "363.164"
section_name: "Is a converted savings bond eligible to be converted back into a definitive bond?"
chapter_name: "FISCAL SERVICE, DEPARTMENT OF THE TREASURY"
subchapter_number: "A"
subchapter_name: "BUREAU OF THE FISCAL SERVICE"
part_number: "363"
part_name: "REGULATIONS GOVERNING SECURITIES HELD IN TREASURYDIRECT"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 301; 12 U.S.C. 391; 31 U.S.C. 3102,  31 U.S.C. 3121,"
regulatory_source: "67 FR 64286, Oct. 17, 2002, unless otherwise noted."
cfr_part: "363"
---


# 363.164 Is a converted savings bond eligible to be converted back into a definitive bond?

Once a definitive savings bond has been converted to a book-entry bond, it may not be converted back into a definitive bond.