Credit Card Payoff Calculator - Debt-Free Date Plan

The credit card payoff calculator converts a balance, APR, and fixed monthly payment into a debt-free timeline and an interest estimate. Monthly rate r is APR / 1200. Months to pay off n = ln(payment / (payment − balance × r)) / ln(1 + r). Estimated interest is payment × ceil(n) − balance. A $3,000 balance at 20% APR with a $150 payment takes about 24.53 months and roughly $750 of interest under this method. If the payment is not larger than the first month's interest, the balance does not decline and the credit card payoff calculator returns an error instead of a date. This is the planning question most cardholders ask: "If I send this amount every month and stop using the card, when am I done?" Extra principal shortens n quickly because each dollar above interest reduces the next month's finance charge. A small APR cut helps, but payment size is usually the stronger lever on everyday balances. The estimate assumes a constant APR, on-time payments, and no new purchases. It does not model grace periods, residual interest, or issuer daily compounding. Use the credit card payoff calculator to compare your current payment with a stretch payment, to set a calendar date for a wedding or move, and to see the interest cost of delay. Change one input at a time. Recalculate after a rate change, a large purchase, or a lump-sum payment. Caveats: the ceiling approximation slightly overstates interest when the final payment is smaller than the regular amount. Minimum-only paths are longer because the due amount falls with the balance. Confirm APR and balance on the statement and seek advice for hardship programs. Used as a worksheet, the credit card payoff calculator makes months-to-zero and interest cost easier to compare. Keep a written record of the balance, APR, and payment you assumed so a later statement can be checked against the same plan.