Debt calculator

Balance transfer calculator

Find out if a 0% balance transfer card is actually worth it once you factor in the transfer fee.

✓ Includes transfer fee ✓ Models post-promo rate ✓ No signup required
Enter your numbers Debt · 2026
Balance transfer saves you
$1,140
in interest vs. staying on your current card
✓ Worth transferring
Transfer fee cost
Months to pay off
Paid off within promo period?

How to read your results

This calculator compares total interest paid if you keep your balance on the current high-interest card vs. transferring to a 0% promotional card (after paying the transfer fee, which is typically 3-5% of the balance). It also checks whether your planned monthly payment will pay off the balance before the promotional period ends — critical, because any remaining balance after the promo period reverts to the card's regular (often very high) interest rate.

The biggest balance transfer mistake: Transferring a balance you can't realistically pay off within the promotional period. If $1,000 remains when the 0% period ends and the rate jumps to 24.9%, you've potentially made your situation worse by paying the transfer fee for limited benefit. Always calculate the monthly payment needed to clear the balance in time before transferring.

What this calculator doesn't include

  • Credit score impact — opening a new card causes a hard inquiry and affects your credit utilization ratio, which may temporarily lower your score.
  • New purchases on the card — most balance transfer cards charge full interest on new purchases immediately, even during the promotional period; avoid using the new card for spending.
  • Multiple transfers — if consolidating several cards, calculate the combined fee and ensure the new card's credit limit accommodates the total.
  • Annual fees — some balance transfer cards charge an annual fee; factor this into your total cost if applicable.

The math that makes balance transfers worth it

Balance transfers work best when you have a clear, realistic plan to pay off the full balance within the promotional window. Divide your balance by the number of promo months to find your required monthly payment — if that number fits your budget, a balance transfer can save substantial interest with minimal downside.