Credit card payoff calculator
Enter your credit card balance, APR and planned monthly repayment. The calculator estimates the payoff time, total interest and debt-free date.
How to use this calculator: try your current payment first, then increase the repayment amount to see how much time and interest you could save.
How the payoff calculation works
Credit card payoff is calculated month by month. Interest is added, new spending is added, your repayment is taken off, and the process repeats until the balance reaches zero.
monthly_rate = APR / 100 / 12
balance = starting_balance
each month:
interest = balance × monthly_rate
balance = balance + interest + new_monthly_spending
payment = min(monthly_repayment, balance)
balance = balance - payment
repeat until balance = 0
If your monthly repayment is too low to cover the interest and any new spending, the balance may not fall. The calculator will warn you if this happens.
What your result means
The time to clear shows how many months it may take to pay off your current balance if you keep the repayment amount the same. The total interest shows how much the card may cost before it is cleared.
Credit cards can be expensive because interest is charged on the outstanding balance. Paying only a small amount each month can leave the balance hanging around for years, especially if you continue spending on the card.
Compare borrowing options carefully
Balance transfers, debt consolidation or higher monthly repayments may reduce interest, but fees and eligibility matter. Compare the total cost before applying.
Why minimum payments can cost so much
A minimum payment is the smallest amount your card provider asks you to pay each month. Paying the minimum can keep the account from falling into arrears, but it may not reduce the balance quickly.
The problem is that interest is added every month. If the minimum payment is only slightly higher than the interest, most of your payment goes towards interest rather than reducing the balance. This can make the debt last much longer than expected.
A fixed payment that is higher than the minimum can be much more effective. Even a modest extra amount can reduce the payoff time and interest cost because more of each payment attacks the balance.
Important: if you are struggling to make minimum payments, consider speaking to a free debt advice charity before taking on more borrowing.
What affects credit card payoff time?
- Balance: a higher balance takes longer to clear.
- APR: a higher APR means more interest is added each month.
- Monthly repayment: paying more usually cuts both time and interest.
- New spending: continuing to use the card can cancel out your repayments.
- Fees: late payment, cash withdrawal or balance transfer fees can increase the cost.
- Payment consistency: missed or reduced payments can push the debt-free date further away.
Credit card payoff FAQs
How long will it take to pay off my credit card?
It depends on your balance, APR, monthly repayment and whether you continue spending. The calculator estimates the payoff time month by month.
Why do minimum payments take so long?
Minimum payments are often low compared with the balance and interest added. This can make the debt reduce very slowly.
What happens if my payment does not cover the interest?
If your payment does not cover the interest and new spending, the balance may rise instead of fall. You may need to pay more, stop spending or seek debt advice.
Does new spending affect my payoff date?
Yes. New spending increases the balance and can delay the debt-free date. To clear the card faster, avoid new spending while repaying.
Should I use a balance transfer card?
A balance transfer can reduce interest if you qualify, but fees, promotional periods and repayment discipline matter. Compare the total cost before applying.
Key terms used in this calculator
These glossary terms explain the credit card and debt payoff language used on this page.