31 CFR § 363.131 - What is a TreasuryDirect ® zero-percent certificate of indebtedness?

---
identifier: "/us/cfr/t31/s363.131"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "31 CFR § 363.131 - What is a TreasuryDirect ® zero-percent certificate of indebtedness?"
title_number: 31
title_name: "Money and Finance: Treasury"
section_number: "363.131"
section_name: "What is a TreasuryDirect ® zero-percent certificate of indebtedness?"
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"
---


# 363.131 What is a TreasuryDirect ® zero-percent certificate of indebtedness?

A TreasuryDirect® zero-percent certificate of indebtedness is a non-interest-bearing security that is issued daily, with a one-day maturity, which automatically rolls over at maturity until you request redemption. A zero-percent certificate of indebtedness has a minimum purchase amount of one cent. The only purpose of a zero-percent certificate of indebtedness is to accumulate funds for the purchase of another eligible security in the TreasuryDirect system. A zero-percent certificate of indebtedness within a minor's account is the property of the minor alone. The payroll zero-percent certificate of indebtedness is a restricted form of the zero-percent certificate of indebtedness that is held separately from the zero-percent certificate of indebtedness and used only for purchases made through the payroll savings plan.

[69 FR 50309, Aug. 16, 2004, as amended at 75 FR 70816, Nov. 19, 2010]