Credit Card Payoff Calculator
Why the Minimum Payment Barely Moves the Balance
Credit card interest compounds monthly at rates far higher than most other consumer debt, which means a payment that looks reasonable can still leave the balance crawling downward for years. This calculator runs the actual month-by-month simulation — charging interest on the remaining balance, then applying the payment — rather than using a simplified formula, because credit card payoff genuinely happens balance by balance, month by month.
The Formula
Principal Payment = Monthly Payment − Interest Charge
New Balance = Remaining Balance − Principal Payment
This is simulated month by month until the balance reaches zero. If the fixed monthly payment doesn't even cover the first month's interest charge, the balance will never shrink — the calculator flags this case explicitly rather than returning a misleading result.
Where This Matters
- Choosing a payoff payment — seeing exactly how much faster a slightly higher fixed payment clears the balance.
- Comparing to the minimum payment trap — minimum payments are often set just above the interest charge, stretching payoff to a decade or more.
- Setting a payoff deadline — the "fixed time" mode works backward from a target number of months to the payment required.
$6,000 Balance at 22% APR — Payment Speed
| Fixed Monthly Payment | Time to Pay Off | Total Interest Paid |
|---|---|---|
| $150 | 73 months (6y 1m) | $4,913.45 |
| $200 | 44 months (3y 8m) | $2,790.68 |
| $300 | 26 months (2y 2m) | $1,542.87 |
| $500 | 14 months (1y 2m) | $839.14 |
Doubling the payment from $150 to $300 cuts total interest by nearly 70% — a clear illustration of how much interest a slow payoff quietly adds.
How to Use This Calculator
- Choose the mode: Time to Pay Off (Fixed Payment) or Payment Needed (Fixed Time).
- Enter the Credit Card Balance.
- Enter the Annual Interest Rate / APR.
- Enter either the Fixed Monthly Payment or the Months to Pay Off, depending on the mode.
- Select Calculate to see the payoff timeline and total interest.
Related Calculations
Carrying multiple balances? Compare consolidating them with the Debt Consolidation Calculator, or use the Debt Payoff Calculator for a single non-credit-card debt.