Why is interest so high?

Card APRs compound on revolving balances. Paying only a little above interest extends payoff for years.

Does this include new charges?

It models paying down an existing balance assuming no new spending unless you add that yourself.

Credit Card Payoff Calculator

How to use Credit Card Payoff Calculator

Enter balance, APR, and monthly payment.
Review months to pay off and total interest.
Try higher payments to see interest savings.

Worked examples

Concrete numbers and cases you can check against the tool above.

$3,500 balance, 21% APR, $90 monthly

Minimum-like payments mostly cover interest at 21%. $90/month pays this off in on the order of ~4–5 years with a large interest total; $150/month cuts both sharply. If the payment is below the monthly interest, the balance grows — the tool should show that failure mode.

When to use Credit Card Payoff Calculator

Minimum payments hide how long interest keeps a balance alive. Modeling payoff months and total interest motivates larger payments.

Common use cases

See how long a balance lasts at your current payment.
Test a higher fixed payment to cut interest.
Plan payoff before a 0% promo expires.
Illustrate revolving interest for a money workshop.

Inputs and outputs

Card balances, APRs (%), monthly payments

Privacy

This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.

Frequently asked questions

Why is interest so high?: Card APRs compound on revolving balances. Paying only a little above interest extends payoff for years.
Does this include new charges?: It models paying down an existing balance assuming no new spending unless you add that yourself.
Are balances stored?: No.