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Credit Card Payoff Calculator

Use this credit card payoff calculator to find out how long it will take to pay off your balance, how much interest you will pay in total, and how extra payments can help you become debt free faster.

The total outstanding balance on your credit card that you want to pay off.

The annual percentage rate charged on your credit card balance. Check your card statement for the exact rate.

The fixed amount you plan to pay each month toward your credit card balance.

Any extra amount you can pay each month on top of your regular payment. Even small extra payments can significantly reduce your payoff time.

This calculator helps you understand the true cost of carrying a credit card balance. Enter your current balance, interest rate, and monthly payment to see your payoff timeline and total interest. Add an extra monthly payment to see how much time and money you can save by paying more than the minimum.

How It Works

Iterative Balance Reduction with Compound Interest

Each month: Interest = Balance x (APR / 12); New Balance = Balance + Interest - Payment; Repeat until Balance <= 0

Each month, interest is calculated on the remaining balance at the monthly rate. Your payment is then subtracted from the balance plus interest. This repeats until the balance reaches zero.

The monthly interest rate is the annual rate divided by 12.

Each month, interest is calculated on the current remaining balance.

Your payment is applied after interest is added, reducing the principal.

The process repeats month by month until the balance is fully paid off.

Additional payments go directly toward reducing the principal, which lowers future interest charges.

Important Notes:

  • •This calculator uses an iterative month-by-month simulation rather than a closed-form formula because credit card interest compounds on the declining balance.
  • •The calculation assumes a fixed interest rate for the entire payoff period.
  • •Minimum payment requirements from your card issuer are not modeled. Your chosen monthly payment must exceed the monthly interest charge or the balance will never be paid off.
  • •This calculator does not account for new purchases, balance transfers, promotional rates, or fees.

Worked Example

A cardholder has a $5,000 balance at 22.99% APR and pays $150 per month with no additional payments.

Inputs:

  • balance:5,000
  • annual Interest Rate:22.99
  • monthly Payment:150
  • additional Payment:0

Result:

It would take approximately 47 months (about 3.9 years) to pay off the balance. Total interest paid would be approximately $2,017, making the total amount paid about $7,017. Increasing the monthly payment to $200 would cut the payoff time to about 32 months and save over $600 in interest.

Who Is This Calculator For?

  • credit card holders
  • people paying off debt
  • budget planners
  • anyone carrying a credit card balance

Frequently Asked Questions

Credit card interest is typically calculated daily on your average daily balance, then charged monthly. This calculator simplifies this to a monthly calculation using your APR divided by 12, which provides a close approximation of your actual interest charges.
Minimum payments are usually calculated as a small percentage of your balance, often just 1-3%. At high interest rates, most of the minimum payment goes toward interest rather than reducing your actual balance. This creates a cycle where payoff can take decades.
Extra payments go directly toward reducing your principal balance, which lowers future interest charges. Even an additional $25 or $50 per month can save hundreds or thousands of dollars in interest and cut months or years off your payoff timeline.
The debt avalanche method, which focuses extra payments on the highest interest rate card first, saves the most money mathematically. The debt snowball method, which pays off the smallest balance first, can provide psychological motivation. Both work as long as you stay consistent.
If your monthly payment is less than the interest charged each month, your balance will grow instead of shrink. You must pay more than the monthly interest charge for the balance to decrease. This calculator will warn you if the debt cannot be paid off with your current payment.
A balance transfer to a card with a lower or 0% introductory APR can save significant interest if you pay off the balance during the promotional period. Watch for balance transfer fees, which are typically 3-5% of the transferred amount, and have a plan to pay off the balance before the promotional rate expires.

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Last updated: April 11, 2026