0% APR Payoff Plan Calculator: Monthly Payment to Clear the Balance Before the Promo Ends
Find the monthly payment that clears a 0% intro APR, balance transfer or no-interest financing balance before the promotion ends, including any transfer fee, and see what a smaller payment leaves behind, the interest charged afterward, and how deferred-interest “no interest if paid in full” deals back-charge interest.
How it works
Balance = promo balance × (1 + transfer fee %) · Payment to clear in time = balance ÷ promo months (rounded up to the cent) · Left at promo end = balance − payment × months (not below 0) · 0% APR: interest only on what is left, at APR ÷ 12 a month · Deferred interest: if anything is left, add Σ (starting balance each month × APR ÷ 12) for the whole promo
A 0% offer costs nothing only if the balance is gone before the promotion ends. The safe plan is to divide the balance by the number of promo months, rounding up, and pay at least that every month. For a balance transfer, include the transfer fee (usually 3% to 5%), because it is added to the balance on day one. Two kinds of offer behave very differently when money is left over. A true 0% APR, such as an intro rate on a credit card or a balance transfer, charges the regular APR only on the remaining balance from the end of the promo onward. A deferred-interest plan, common on store cards and medical cards and usually advertised as “no interest if paid in full”, charges interest from the purchase date on the whole balance if any amount remains. That can add a large sum in a single month. Enter your planned payment to see what is left at the deadline, the interest it triggers, and how long you will take to pay it off at the regular rate. The calculator estimates interest monthly at APR ÷ 12. Card issuers use daily balances, so the real figures can differ by a few dollars.
Worked example
With the defaults, a $3,600 balance at 0% for 12 months needs $3,600 ÷ 12 = $300 a month to clear in time. Paying $250 instead leaves $3,600 − $250 × 12 = $600 when the promo ends. With a true 0% APR, that $600 then accrues 26% APR, so $250 a month clears it in 3 more payments, about $23.48 of interest, and 15 months in all. On a deferred-interest plan, the $600 left would also trigger the interest accrued since day one: 26% ÷ 12 on each month’s starting balance ($3,600, $3,350, … $850) is $578.50, all added at once.
Sources: CFPB: How to understand special promotional financing offers on credit cards · Bankrate: What is deferred interest?
Frequently asked questions
How do I calculate the payment to pay off a 0% balance in time?
Divide the balance, plus any transfer fee, by the months left at 0% and round up to the next cent. A $3,600 balance over 12 months needs $300 a month; a $2,000 balance over 12 months needs $166.67.
What is the difference between 0% APR and deferred interest?
With a true 0% APR, interest starts only on the balance left when the promo ends. With deferred interest (“no interest if paid in full”), interest builds up in the background at the regular rate and is charged all at once, back to the purchase date, if any balance remains at the deadline. Paying the full balance on time avoids it in both cases.
Is the minimum payment enough to clear a 0% balance?
Usually not. The card’s minimum payment is set to keep the account current, not to clear a promo balance, so it often leaves a large balance when the 0% period ends. Use the payment this calculator shows.
Does a balance transfer fee make a 0% offer worth it?
Often yes if you pay it off in time. A 3% fee on a 12-month 0% offer works out to about 3% a year, far below a typical card APR above 20%. On a short promo or a balance you cannot clear, the fee and later interest add up.
What happens if I pay late during a 0% promotion?
Many card agreements let the issuer end the promotional rate after a late payment, and late fees apply. Set up automatic payments of at least the amount needed to clear the balance in time.
Related calculators
Educational estimate, not financial advice. Promotional terms, fees and interest methods vary by card issuer and retailer; check your agreement and statements.