Effective July 16, 2026
Bond series, denominations, issue dates, serial numbers and notes you enter are processed entirely in your browser and saved only to your browser's local storage on your own device. They are never sent to our servers. We could not see them if we wanted to — the site has no server-side storage of user data. Clearing your browser data deletes your inventory.
Standard anonymous web analytics (page views, referrer, country, browser type) to understand how the site is used. No cookies are required for the calculator to function. If a payment is made, checkout is handled by our merchant-of-record payment provider, which processes your payment details under its own privacy policy; we receive only a confirmation that a license was purchased — never your card details.
Redemption data is fetched from this site's own static files (originally sourced from fiscaldata.treasury.gov). No advertising networks. No data brokers. No sale of personal information.
privacy@savingsbondvalues.com