Live tool: https://ababa1326.github.io/feewindow/
Most credit-card issuers will refund an annual fee in full if you cancel or downgrade within a short window after it posts. FeeWindow calculates that deadline and helps you use the window before it closes.
- Select an issuer to load its common refund-window preset
- Edit the window when your issuer or card has different terms
- See the estimated full-refund deadline and days remaining
- Follow the best order of operations: retention call, downgrade, then cancel
- Download a one-time calendar reminder for five days before the window closes
Everything runs in your browser. No accounts, no server, no analytics — the dates you enter never leave the page.
One self-contained index.html. Vanilla JavaScript, zero dependencies, no build step.
Hosted free on GitHub Pages.
ZeroEnds — calculate what to pay before a 0% intro APR ends.
Educational tool, not financial advice. Refund policies are issuer norms that change and may vary by card and account. Verify the policy with your issuer.