Credit Card Payoff Calculator
Enter your balance, APR, and monthly payment — then see what bumping the payment by even $50 does to total interest.
Balance over time
Paying $100 more each month saves you $1,775 in interest and gets you debt-free 23 months sooner.
Methodology & how to use this
The math
Each month we accrue interest at APR/12 on the current balance, then subtract your payment. If your payment ever falls below the monthly interest, the balance never decreases — that's the "minimum payment trap."
What this doesn't model
New purchases on the card, fees, penalty APRs, or introductory 0% periods. Stop swiping the card while you're paying it down — the interest math only works if the balance stops growing.
Frequently asked questions
Keep running the numbers
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