Free Tool

Balance Transfer Calculator

Should you do a balance transfer? Enter your current balance, APR, and the transfer offer details. We'll show you how much you save (or lose) and whether you can pay it off before the promo rate expires.

Current card
Your existing debt
$
%
$
Transfer offer
New card terms
%
6 mo24 mo
0%5%
%
Verdict
Do the transfer
You'll save $xxx in interest
$1,240
Interest saved
$255
Transfer fee cost
$1,890
Interest if you keep card
$650
Total cost after transfer
Payoff timeline
Keep current card26 months
After balance transfer22 months
Free account · Promo deadline alerts included

How balance transfers actually work

A balance transfer moves your high-APR debt to a new card offering a 0% promotional rate — but there are three things that can turn a smart move into an expensive mistake.

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The transfer fee is immediate

Most cards charge 3–5% of the transferred balance upfront. On $8,500 that's $255–$425 added to your balance on day one. A 0% offer must save you more than this to be worth it.

The promo clock is ruthless

If you don't pay off the full balance before the promo period ends, most cards charge the regular APR on the remaining balance — not retroactively, but going forward. Calculate your required monthly payment before you transfer.

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New purchases may not be 0%

The promo rate often applies only to transferred balances, not new charges. Check your offer terms. Using the new card for purchases while carrying a balance can be expensive.

Balance transfer FAQ