A credit card balance feels manageable when you're making the minimum payment each month. The problem is that the minimum is *designed* to keep you in debt: it barely covers the interest, so the balance shrinks at a crawl and the card issuer earns for years.
Here's how payoff time and interest actually work, why paying a little extra changes everything, and how to see your own numbers.
Why minimum payments trap you
Credit cards charge interest on your balance every month — often 18–25% APR, applied monthly. The minimum payment is usually a small percentage of the balance (say 2–3%) plus that month's interest. Because so much of each payment goes to interest, the principal barely moves.
On a $5,000 balance at 22% APR, paying only the minimum can take over 15 years and cost more in interest than the original balance. That's not an accident — it's how the product is built.
The maths behind payoff time
Each month, interest is added (roughly APR ÷ 12 × balance), then your payment is subtracted. Whatever's left carries to next month and gets charged interest again — this is compounding, working against you. The higher your fixed payment above the interest charge, the faster the principal falls, and the effect snowballs.
Paying a fixed amount each month, rather than the shrinking minimum, dramatically shortens payoff. Even an extra $50–100 a month can cut years off the balance and save thousands in interest.
How to pay it off faster
- Pay a fixed amount well above the minimum, and keep it fixed as the balance drops.
- Target the highest-APR card first (the avalanche method) to minimise total interest.
- Avoid adding new charges to a card you're paying down.
- Consider whether a lower-rate option or balance transfer genuinely saves money after fees.
See your own payoff date
Enter your balance, APR and monthly payment in the free Credit Card Payoff Calculator to see how many months it will take and how much interest you'll pay — then try a higher payment and watch both numbers drop.
Credit Card Payoff CalculatorHow long — and how much interest — to clear a balance.Related finance tools
- Loan Calculator — monthly payments on any fixed loan.
- Compound Interest Calculator — see compounding work *for* you when saving.
- Savings Goal Calculator — how much to set aside to hit a target.
- Simple Interest Calculator — interest without compounding.