Tbillery is built to need as little of your data as possible. We do not require an account, and the amounts and ladder settings you enter are never sent to us for storage — your saved ladder lives only in your own browser's local storage.
We use a privacy-friendly analytics setup to count visits in aggregate. With your consent, we may show ads via Google AdSense, which can set cookies for ad delivery. You can decline on the cookie banner and keep using everything; we default ad and analytics storage to denied until you choose.
If you subscribe to the optional rate-move digest, we store your email address and a confirmation flag solely to send that digest (double opt-in). Every email includes an unsubscribe link, and you can request deletion of your address at any time.
Treasury figures come from the U.S. Department of the Treasury. Tbillery is not affiliated with or endorsed by any government agency, bank, or issuer.
Updated July 2026