How credit card payoff works
Each month your card charges interest on the balance (APR รท 12), then your payment is applied โ first to that interest, and only the rest reduces what you owe. That's why a small payment barely dents the balance: most of it is eaten by interest. Paying more means more goes to principal, so the balance falls faster and you pay less total interest.
The minimum payment trap
Minimum payments are designed to be tiny โ usually around 1% of the balance plus that month's interest. On a typical card that can stretch a modest balance into 15โ20+ years and more than double what you repay. This calculator shows both paths side by side so the difference is obvious.
Fastest ways to clear card debt
- Pay a fixed amount, not the minimum โ even a little extra dramatically cuts the time (drag the payment up and watch).
- Attack the highest-APR card first (the "avalanche" method) to minimise interest.
- Consider a 0% balance-transfer offer to pause interest while you clear the principal.
Why won't my balance go down?
If your payment is less than the monthly interest, the balance grows instead of shrinking. The calculator warns you when that happens โ you must pay more than the interest each month.
Is this before or after new spending?
It assumes you stop adding new charges. New purchases reset the math, so pause the card while you clear it.