31 CFR § 359.55 - How are redemption values calculated for book-entry Series I savings bonds?
---
identifier: "/us/cfr/t31/s359.55"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "31 CFR § 359.55 - How are redemption values calculated for book-entry Series I savings bonds?"
title_number: 31
title_name: "Money and Finance: Treasury"
section_number: "359.55"
section_name: "How are redemption values calculated for book-entry Series I savings bonds?"
chapter_name: "FISCAL SERVICE, DEPARTMENT OF THE TREASURY"
subchapter_number: "A"
subchapter_name: "BUREAU OF THE FISCAL SERVICE"
part_number: "359"
part_name: "OFFERING OF UNITED STATES SAVINGS BONDS, SERIES I"
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. 3105."
regulatory_source: "67 FR 64278, Oct. 17, 2002, unless otherwise noted."
cfr_part: "359"
---
# 359.55 How are redemption values calculated for book-entry Series I savings bonds?
We base current redemption values (CRV) for book-entry Series I savings bonds on the definitive savings bonds CRV. To calculate the book-entry values, we use the CRV for the $100 denomination Series I savings bonds and calculate a CRV prorated to the book-entry par investment amount for the corresponding issue and redemption dates. Calculated book-entry CRV will be rounded to the nearest one cent.
<sup>4</sup>
[^] The formula is as follows (Examples of the calculation are given in appendix A to part 359.):
<sup>4</sup> Example: Calculated value of $25.044 rounds to $25.04; calculated value of $25.045 rounds to $25.05.
[Book-entry par investment ÷ 100] × [CRV value for $100 bond].
[67 FR 64278, Oct. 17, 2002, as amended at 75 FR 52461, Aug. 26, 2010]