Find out how many months it takes to clear a credit card and how much interest you will pay, based on your balance, APR and a fixed monthly payment. A clear picture of why overpaying matters.
Your card
£
%
£
Time to clear
2 years 3 months
Paying £150/month
Months to clear27
Total interest paid£916
Total repaid£3,916
Paying more each month dramatically cuts both the time and the interest. A 0% balance-transfer card can help — if you clear it within the promotional period.
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Why fixed payments beat the minimum
Credit card interest compounds monthly on the outstanding balance, so paying only the minimum - which falls as the balance drops - can stretch repayment over many years and cost more in interest than the original debt. Paying a fixed amount each month, above the minimum, clears the card far faster and slashes the interest.
Worked example
3,000 balance at 24.9% APR.
Paying 100/month clears it in about 43 months, costing about 1,270 in interest.
Paying 200/month clears it in about 18 months, costing about 530 - less than half.
If you are paying high interest, a 0% balance-transfer card or a lower-rate personal loan can cut the cost - but only if you avoid new spending and clear the balance within the promotional period.
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Frequently asked questions
What if my payment is too low?
If your monthly payment is less than the monthly interest, the balance never reduces and the debt grows. The calculator will warn you when the payment cannot clear the card.
Should I clear debt or save first?
Mathematically, clearing debt that charges 20%+ usually beats saving at low single-digit rates - though keeping a small emergency buffer first can stop you reaching for the card again.
Report a bug or ask a question about this calculator
Important: BrickCrunch provides general information and estimates only — this is not financial, tax, mortgage or legal advice. Calculations are simplified and your circumstances may differ. UK tax and rate figures are checked against gov.uk (21 June 2026 (2026/27 tax year)) but rates change and errors are possible. Always confirm figures with gov.uk or a qualified professional before making decisions.
