Credit Card Interest
Estimate revolving credit-card finance charges from your actual card rate and days outstanding
Key Features & Calculation Guidance
Key features: Exact Card Rate, Days Outstanding, New-Spend Scenario. Free, 100% browser-based — no login required.
Frequently Asked Questions
Why are bank-specific rates not shown?
Rates vary by issuer, card variant and time. A static bank-rate table can become misleading, so this calculator asks for the current monthly finance-charge rate shown in your own card terms or statement.
If I pay the minimum amount due, do I avoid interest?
No. Paying the minimum due does not normally eliminate finance charges on the remaining revolving balance. It can also affect the interest-free treatment of new purchases according to the issuer's terms.
Is the annual rate simply monthly rate × 12?
That gives a nominal annualised rate. If you want to understand the compounding effect of a monthly rate over a year, the effective annual rate is higher and is shown separately.
Will this exactly match my credit-card statement?
Not necessarily. Exact finance charges depend on transaction dates, payments, cash advances, payment allocation, taxes, fees and your issuer's methodology. Use the calculator to understand scale and scenarios.
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