Calculate how long it will take to pay off your credit card balance and how much interest you will pay — with any monthly payment amount.
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It uses the standard amortisation formula for revolving credit. Each month, interest is calculated on the remaining balance (Balance × Monthly Rate), then your payment reduces the balance. The process repeats until the balance reaches zero.
Most credit card issuers set the minimum payment as either a flat amount (e.g. $25–$35) or a percentage of the balance (e.g. 1–3%), whichever is greater. Paying only the minimum dramatically extends payoff time and total interest paid.
Significantly more than the balance itself. A $5,000 balance at 19.99% APR paying $100/month takes around 8 years to pay off and costs approximately $4,400 in interest — nearly doubling the original debt.
Pay more than the minimum every month. Even an extra $50–$100 per month can cut years off your payoff timeline. Stop adding new charges. Consider a balance transfer to a 0% promotional APR card if available.
A balance transfer moves your existing card balance to a new card with a 0% promotional APR period (typically 12–21 months). If you pay off the balance within the promotional period, you pay no interest. Watch out for transfer fees (typically 3–5%).
In the US, average credit card APRs range from 19–29% as of 2024–2025. Cards for excellent credit may offer 15–19% APR, while store cards and subprime cards can exceed 30%.
You may be charged a late fee ($29–$41 typically), your APR may increase to a penalty rate (often 29.99%), and your credit score will be negatively affected if the payment is 30+ days late.
If possible, yes. Paying in full by the due date every month means you pay zero interest on purchases. Most cards have a grace period — no interest is charged if you pay the full statement balance by the due date.
Credit card interest is typically compounded daily. Your daily periodic rate (APR ÷ 365) is applied to your average daily balance. This means even a short delay in paying can result in more interest than a simple monthly calculation suggests.
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