Credit Card True Cost Calculator

See how much interest you'll really pay — and how long it takes to escape.

Stop guessing. Start tracking.

WTF Suite watches all your charges, fees, and interest — AI-categorized, zero effort.

Try WTF Suite Free

You just saved money with one calculator.

Imagine what happens when AI watches ALL your spending — bills, subscriptions, charges, receipts. That's WTF Suite.

Try WTF Suite Free → All WTF tools in one bundle. No credit card required.

Understanding credit card interest

Credit card companies love minimum payments. At 24.99% APR, a $5,000 balance with $150/month payments takes over 4 years to pay off — and you'll pay almost $2,500 in interest alone. That's nearly half your original balance, going straight to the bank.

This credit card interest calculator shows you exactly how long payoff takes, how much total interest you'll pay, and the true cost of your balance. Use it to find the monthly payment that gets you debt-free fastest.