Credit Card Payoff Calculator

Use this Credit Card Payoff Calculator to estimate how long it may take to pay off a credit card balance, how much interest you may pay, and how larger or extra payments can affect the payoff timeline.

Important: This calculator uses a simplified monthly interest model. Actual credit card interest can differ because many issuers calculate interest daily and may apply different rates, fees, and payment rules.

Credit Card Payoff Calculation

The calculator converts the APR to an estimated monthly interest rate:

Monthly rate = APR ÷ 12 ÷ 100

Each month:

Interest = current balance × monthly rate

Principal paid = payment − interest

New balance = current balance + interest − payment

The calculation repeats until the balance reaches zero.

Fixed Monthly Payment

With the fixed-payment option, the calculator assumes you make the same payment every month until the card is paid off.

As the balance falls, the estimated interest charge generally decreases. This allows more of the fixed payment to reduce principal.

Minimum Payment Method

When minimum-payment mode is selected, the calculator estimates the required payment as:

Minimum payment = greater of:

• Current balance × minimum-payment percentage
• Minimum-payment floor

Any optional extra payment is added to the estimated minimum payment.

Because a percentage-based minimum payment can decline as the balance falls, paying only the minimum can result in a much longer payoff period.

Worked Example

Suppose you have:

• Credit card balance: $5,000
• APR: 24%
• Fixed monthly payment: $200
• No new purchases or additional fees

The estimated monthly rate is:

24% ÷ 12 = 2%

First-month interest:

$5,000 × 2% = $100

First-month principal reduction:

$200 − $100 = $100

Estimated balance after the first payment:

$5,000 − $100 = $4,900

Using this simplified monthly model, a $200 fixed payment would pay off the balance in approximately 36 months, with about $2,001 in total interest.

Increasing the payment would generally shorten the payoff period and reduce the total interest paid.

Important Notes

• The calculator uses APR ÷ 12 for a simplified monthly estimate. Many credit card issuers calculate interest daily instead.
• Your actual interest charge may depend on average daily balance, transaction dates, payment dates, and billing-cycle length.
• Purchases, balance transfers, and cash advances may have different APRs on the same card.
• New purchases and fees are not automatically included unless represented in your calculation.
• Promotional APRs, penalty APRs, annual fees, late fees, and other charges can change the actual payoff result.
• Minimum-payment formulas vary by issuer and may include interest, fees, fixed amounts, or different percentage rules.
• A fixed payment must be high enough to cover accruing interest. Otherwise, the balance may not decline.
• Paying more than the required minimum generally reduces payoff time and total interest cost.
• Use your latest credit card statement and cardholder agreement for the issuer’s actual APR, minimum payment, and interest-calculation method.

Sources

• Consumer Financial Protection Bureau — How Credit Card Interest Is Calculated
• Consumer Financial Protection Bureau — Understanding Minimum Payments
• Consumer Financial Protection Bureau — Credit Card Payments and Interest
• Consumer.gov — Credit Cards, APR and Minimum Payments