Finance Calculator
Credit Card Repayment Calculator
Estimate how long it could take to pay off your credit card balance and how much interest you could pay. Compare repayment strategies and see how increasing your payments could reduce your payoff time and interest cost.
- Estimate payoff time
- See total interest
- Compare repayment strategies
Free to use · No sign-up required
Credit Card Calculator
Calculate Your Credit Card Repayment
Enter your current credit card balance, annual interest rate and repayment strategy to estimate your payoff time, total interest and total amount repaid.
Credit Card Details
Repayment Results
Calculation Method
How Credit Card Repayments Are Calculated
The calculator models your credit card balance one month at a time. Estimated interest is added to the outstanding balance, your selected repayment is then deducted, and the process repeats until the balance reaches zero.
Converting the Annual Rate to a Monthly Rate
The entered annual percentage rate is divided by 12 to create the monthly rate used by this calculator. Each month, that rate is applied to the outstanding balance before the month’s repayment is deducted.
Fixed Payments and Minimum Payments
In fixed-payment mode, the calculator uses the monthly payment you enter. In minimum-payment mode, it compares the selected percentage of the current balance with your selected minimum amount and uses whichever is greater.
What Happens During Each Simulated Month?
$5,000 Balance at 20% APR
Understanding Your Results
What Your Credit Card Repayment Results Mean
Your results show more than how long repayment could take. They also separate the balance you already owe from the estimated interest cost, helping you see how your repayment strategy affects the overall cost of clearing the debt.
Estimated Payoff Time
The estimated number of months or years required to reduce the current balance to zero using your selected repayment method, APR and optional extra payment.
Starting Balance
The credit card balance entered at the beginning of the calculation. This is the amount already owed before the calculator estimates future interest.
First Payment
The first repayment generated by your selected strategy. In minimum-payment mode this amount can change over time as the outstanding balance falls.
Total Interest
The estimated interest accumulated while the balance is being repaid. A longer payoff period can mean interest is charged over more months.
Total Repaid
The estimated total of all repayments required to clear the balance under the calculator’s assumptions. It includes the starting balance plus estimated interest.
Where Does the Total Repayment Come From?
Under this calculator’s simplified model, the amount ultimately repaid is made up of the balance you started with plus the interest estimated during the repayment period.
Reading the Balance and Interest Bar
The calculator’s repayment bar shows how much of the estimated total repaid represents your original balance and how much represents estimated interest.
The bar above is illustrative. Your calculator results use the percentages calculated from your own inputs.
Understanding Time and Interest Saved
When you enter an extra monthly payment, the calculator compares that scenario with the same repayment method and assumptions but with no extra payment.
Repayment Examples
Credit Card Repayment Examples
Small changes to your payment amount or interest rate can change both the time needed to clear a credit card balance and the total interest paid. These examples use the same monthly repayment method as the calculator above.
What Happens When You Increase the Monthly Payment?
Starting with a $5,000 balance at 20.00% APR, only the fixed monthly repayment changes.
| Monthly Payment | Payoff Time | Total Interest | Total Repaid |
|---|---|---|---|
| $150 | 50 months | $2,359.08 | $7,359.08 |
| $200 Default Example | 33 months | $1,522.13 | $6,522.13 |
| $250 | 25 months | $1,133.05 | $6,133.05 |
| $300 | 20 months | $906.82 | $5,906.82 |
| $400 | 15 months | $653.73 | $5,653.73 |
How Does APR Affect Repayment?
This comparison keeps the starting balance at $5,000 and the monthly payment at $200 while changing only the APR.
| APR | Monthly Rate | Payoff Time | Total Interest | Total Repaid |
|---|---|---|---|---|
| 10.00% | 0.8333% | 29 months | $630.22 | $5,630.22 |
| 20.00% | 1.6667% | 33 months | $1,522.13 | $6,522.13 |
| 29.99% | 2.4992% | 40 months | $2,942.94 | $7,942.94 |
What Could an Extra $100 Per Month Change?
This example starts with the calculator’s default $200 monthly repayment and then adds an extra $100 each month.
Repayment Strategies
Minimum Payments vs Fixed Payments
A credit card repayment can behave very differently depending on whether your payment changes with the balance or you continue paying a fixed amount each month. The calculator lets you model both approaches.
Payment Changes With the Balance
In minimum-payment mode, the calculator recalculates the required repayment as the balance changes. It uses the greater of your selected balance percentage or your selected minimum dollar amount.
Payment Stays at the Amount You Choose
In fixed-payment mode, the calculator continues using the monthly amount you entered rather than reducing the planned payment as the balance falls. The final payment is reduced automatically if less is needed to clear the remaining balance.
A Falling Payment Can Extend the Repayment Period
When a repayment is calculated as a percentage of the outstanding balance, the payment can become smaller as the debt falls. By contrast, maintaining a fixed payment can direct more money toward the remaining balance than a declining payment would, provided the fixed payment is affordable and high enough to reduce the debt.
Illustration only — a percentage-based payment can become smaller as the modeled balance falls.
Illustration only — the modeled base payment remains level until the smaller final payment clears the debt.
Extra Repayments
How Extra Payments Can Affect Your Credit Card Debt
Adding an amount above your regular repayment can reduce the outstanding balance faster. Under the calculator’s assumptions, this can shorten the payoff period and reduce the total interest charged while the balance is being repaid.
Lower the Balance Faster
An extra payment increases the total amount deducted from the balance in that month, leaving a smaller balance to carry forward.
Reduce Future Interest
Because future interest in the calculator is based on the outstanding balance, reducing that balance sooner can reduce the interest generated in later months.
Reach $0 Sooner
A larger monthly repayment can require fewer monthly calculation cycles before the remaining credit card balance reaches zero.
Why an Extra Payment Can Have an Ongoing Effect
The benefit is not limited to the month in which the extra amount is paid. A lower balance can also mean a smaller interest calculation in the following month, which can help more of later repayments reduce the remaining debt.
Adding $100 to a $200 Monthly Repayment
See What a Different Extra Payment Could Change
Enter an extra monthly payment in the calculator to compare your new payoff estimate with the same repayment strategy without that extra amount.
Repayment Factors
Factors That Affect Credit Card Repayment
Your starting balance, interest rate and repayment amount can have a major effect on how long it takes to clear a credit card. Real accounts can also be affected by new spending, fees, rate changes and the way an issuer calculates interest and minimum repayments.
Starting Balance
A larger starting balance generally requires more money or more time to repay. It can also create a larger interest charge when the same APR is applied to it.
Included in CalculatorAnnual Interest Rate
A higher APR increases the interest generated by a given balance in the calculator. If the repayment stays the same, this can increase total interest and extend the payoff period.
Included in CalculatorRepayment Amount
The amount paid each month determines how much remains after interest and the repayment are applied. Larger repayments can reduce the modeled balance faster.
Included in CalculatorExtra Payments
Paying an additional amount above the modeled base repayment can reduce the balance sooner and may reduce both the estimated payoff period and total interest.
Included in CalculatorNew Purchases
Continuing to use the card can add new amounts to the balance while you are trying to repay it. New spending can therefore change both the payoff date and interest cost.
Not IncludedFees and Other Charges
Annual fees, late-payment charges, cash-advance fees and other account charges can increase the amount owed. These costs are not added by this calculator.
Not IncludedInterest Rate Changes
If your actual interest rate changes during repayment, future interest charges can change as well. The calculator assumes the APR you enter remains constant.
Not IncludedMinimum-Payment Formula
Different issuers can use different minimum-repayment rules. The calculator lets you enter a percentage and minimum amount so you can test a simplified version of your own repayment terms.
User AdjustableInterest Calculation Method
Real credit cards may calculate interest using daily balances and billing-cycle rules. This calculator uses APR divided by 12 to create a simplified monthly rate.
Simplified ModelWhat the Calculator Models
What Is Not Automatically Modeled
How the Main Inputs Can Change the Estimate
Holding the other calculator inputs constant, changing one major variable can shift both the estimated payoff time and the total interest cost.
Important Assumptions
Assumptions & Limitations
This calculator is designed to provide a useful repayment estimate, not reproduce every rule used by every credit card issuer. Understanding the assumptions below will help you interpret the results appropriately.
Constant APR
The annual interest rate you enter is assumed to remain unchanged throughout the estimated repayment period.
Monthly Interest Rate
The calculator converts the entered APR to a simplified monthly rate by dividing the annual percentage rate by 12.
Monthly Calculation Cycle
Interest is estimated once per monthly cycle and added before that month’s repayment is applied.
Repayment Method Continues
The selected fixed-payment or minimum-payment strategy is assumed to continue until the modeled balance has been cleared.
No New Spending
No new purchases, balance increases or cash advances are added while the existing balance is being repaid.
No Additional Fees
Annual fees, late fees, cash-advance fees and other account charges are not automatically included in the repayment estimate.
What the Calculator Assumes Happens Each Month
The calculator repeats the same simplified sequence until the balance reaches zero. This keeps the estimate consistent and makes different repayment scenarios easy to compare.
Real Credit Card Accounts Can Be More Complex
Your issuer may calculate interest, minimum payments and account charges differently from this simplified model. The following factors can cause actual repayment results to differ.
Try Your Numbers
See How Your Credit Card Repayment Could Change
Adjust your balance, APR and monthly repayment to compare different payoff scenarios. You can also test an extra monthly payment to see how it could affect your estimated payoff time and total interest.
Free to use · No sign-up required · Results update from your inputs
Frequently Asked Questions
Credit Card Repayment Calculator FAQ
Find answers to common questions about credit card repayment estimates, interest, minimum payments and extra repayments.
How long will it take to pay off my credit card?
The payoff time depends on your current balance, interest rate and repayment amount. This calculator estimates the number of months required to reduce the balance to zero by adding estimated monthly interest and then applying your selected repayment. A higher repayment can generally shorten the payoff period, while a higher interest rate can extend it.
How does this calculator estimate credit card interest?
The calculator uses a simplified monthly interest model. It divides the annual percentage rate (APR) by 12 to estimate a monthly rate, applies that rate to the outstanding balance, adds the resulting interest and then deducts the monthly repayment. Actual credit card providers may calculate interest using daily balances or other account-specific methods.
What is a minimum credit card payment?
A minimum payment is the minimum amount required under a credit card provider’s account terms for a particular statement period. There is no single formula used by every provider. In minimum-payment mode, this calculator uses the greater of the percentage and minimum amount you enter, allowing you to model a simplified percentage-and-floor repayment rule.
What happens if I pay more than the minimum payment?
Under the calculator’s assumptions, paying more reduces the outstanding balance faster. A smaller balance can generate less estimated interest in later months, which can shorten the payoff period and reduce total interest. The actual effect on a real account depends on your provider’s rates, payment-allocation rules, fees and account terms.
Why is my credit card statement different from the calculator?
Your statement can differ because this calculator uses a simplified monthly model. A real account may use daily balance calculations, different rates for different transaction types, issuer-specific minimum payment formulas, fees, promotional rates, statement timing and payment-allocation rules. New purchases can also change the actual balance.
What if my monthly payment is too low to reduce the balance?
If the planned payment is not high enough to cover the estimated monthly interest and reduce the debt, the calculator cannot produce a normal payoff estimate. It will ask you to increase the repayment or extra payment. On a real account, a balance can grow if interest and other charges exceed the payments being made.
Does the calculator include new purchases, fees or cash advances?
No. The repayment estimate assumes no new purchases, cash advances, annual fees, late fees, penalties or other additional charges are added while the balance is being repaid. If your real balance continues to increase, the actual payoff time and interest cost may be higher than the estimate.
Can I use this credit card calculator in any country?
Yes, the calculator can be used as a general repayment-planning tool with the available currency options, including AUD, USD, GBP, CAD, NZD, ZAR and EUR. However, credit card regulations, interest methods, minimum-payment rules, fees and provider practices differ between countries and issuers, so use your own account terms when entering and interpreting the figures.
References & Sources
Credit Card Repayment References
We use established consumer-finance guidance to support the educational information and assumptions explained on this page. The calculator itself uses the transparent mathematical method described above rather than copying the calculation produced by another online calculator.
How Does My Credit Card Company Calculate the Amount of Interest I Owe?
Consumer guidance explaining that many credit card companies calculate interest using daily balances and that different APRs can apply to different types of credit card transactions.
Paying Off Your Credit Card
Official consumer guidance covering minimum payments, repayment time, interest costs, increasing monthly payments and the way payments may be applied to a credit card balance.
Help If You’re Struggling to Clear Your Credit Card Debt
UK consumer guidance explaining how minimum repayments can result in long repayment periods and how increasing repayments can reduce the amount of interest paid.
Credit Card Payoff Information on Statements
Consumer guidance explaining how payoff estimates can depend on the current balance, minimum payments and assumptions about making no additional purchases.