Credit Card Interest Calculator

Calculate the credit card interest you'll owe for a given balance and interest rate. Choose your monthly payment and learn the payoff time, or enter the payoff time to calculate the monthly payment amount.
Payoff Calculator
Choose how you'd like to calculate:
$
%
$

This calculator is just an educational tool and your results may vary depending on your situation.

Months to pay off
0mo.
Monthly payment
$0.00
Total Interest Paid:
Pie chart with 3 slices.
Chart graphic.
End of interactive chart
$0.00
Total Interest Paid:
Interest: $––
Principal: $––

This calculator is just an educational tool and your results may vary depending on your situation.

Want to save on interest? You could be pre-approved for a low intro APR Discover® Card.

Here’s what would happen if you adjusted the monthly payments:

How the calculator works

This calculator factors in a balance, interest rate (APR) and monthly payment amount to estimate a payoff period and the total interest paid.

Our Credit Card Payoff Calculator assumes the following:

  • Monthly payment is at least the Minimum Payment Due, which is calculated as the higher of $35 or 2% of the balance
  • Monthly payment is made at the beginning of the billing cycle
  • There are no other existing balances or new transactions made on the account
  • Interest compounds daily (and daily balance method is used)
  • There is a fixed APR
  • Payment stays consistent during entire pay-down period, even if the Minimum Payment Due decreases
  • Your interest charges will vary
  • For specific advice about your unique circumstances, you may wish to consult a qualified professional