Is the credit card payoff calculator free?
Yes. It is completely free to use, with no signup, no account, and no paywall.
How accurate are the results?
The calculator uses the standard formulas for this kind of math, but real-world results can differ once fees, rounding, rate changes, and provider-specific rules come into play. Treat the output as a planning estimate, not a quote.
Does it stay local?
Yes. The numbers you enter are processed entirely in your browser and never leave your device.
Why does my statement show slightly more interest than this?
Because the tool compounds monthly and your issuer compounds daily. A 19% APR here becomes 1.583% a month, while the card applies 19% / 365 to your average daily balance every day. The difference is small but always in the issuer's favour, so read the tool's interest total as a lower bound.
How long would the minimum payment take?
Far longer than you would guess. A 2% minimum on a 4000 balance is 80 a month, which at 19% APR takes roughly 100 months and costs about 3988 in interest. You would pay back almost twice what you borrowed. Enter 80 in the payment field to see it.
What happens if I keep spending on the card?
The result stops meaning anything. The formula amortizes a fixed balance to zero. New purchases raise the balance the interest is charged on and push the payoff date out, and the tool has no way to model that.
Does it model a 0% balance transfer?
Only crudely. Enter 0 as the APR and it will show the balance divided by the payment, which is the interest-free case. It does not handle a transfer fee, typically 3 to 5 percent, or the revert rate once the promotional window ends.
Is my card balance uploaded anywhere?
No. The calculation is a couple of logarithms evaluated in your browser tab. No balance, APR, or payment figure is transmitted or stored.