Balance Transfer Calculator

How to use this tool

Enter balance, current APR, fee %, promo APR, promo length, go-to APR after promo, and planned monthly payment. Transfer fees can be entered as a percent of the transfer amount or a flat dollar fee.

Worked example

Transferring $8,000 at 22% to a 0% 15-month promo with a 3% fee, 17.99% go-to APR, and $400 payments often yields positive net savings — but a remaining balance after promo will accrue interest at the go-to rate.

How it works

Compares interest if you keep the balance on your current card versus transferring to a promo-rate card (net of the transfer fee). After the promo window, remaining transfer balance continues to amortize at the go-to APR until paid off.

Limitations

Estimates only for educational purposes. Not financial, tax, or legal advice. Verify figures with your lender, advisor, or official IRS/SSA sources before making decisions.

Privacy and file handling

Your data stays on your device and is not uploaded.

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