---
kind: "section"
citation: "31 C.F.R. § 359.55"
title: "31"
number: "359.55"
heading: "How are redemption values calculated for book-entry Series I savings bonds?"
url: "https://uscodex.org/cfr/31/359.55"
---

# §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. 4 The formula is as follows (Examples of the calculation are given in appendix A to [part 359](/cfr/31/part359.md).):


## Notes

### Amendments

[67 FR 64278, Oct. 17, 2002, as amended at 75 FR 52461, Aug. 26, 2010]

### Authority

Authority: 5 U.S.C. 301; 12 U.S.C. 391; 31 U.S.C. 3105.

### Source

Source: 67 FR 64278, Oct. 17, 2002, unless otherwise noted.

### Amendments

[67 FR 64278, Oct. 17, 2002, as amended at 75 FR 52461, Aug. 26, 2010]