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Debt & Housing

Credit Card Interest

See how long it takes to clear a card balance and how much interest a fixed monthly payment really costs.
Total Interest Paid
$0
The cost of carrying this balance to zero
Months To Payoff
0
At this payment
Total Paid
$0
Balance plus interest
Balance Over Time
💡 The Math
Estimates assume a fixed payment and APR with no new charges. Your actual cost depends on payment timing, fees, and rate changes.
🏛 Predictable Income

Credit Card Interest Calculator

The Credit Card Interest calculator shows the hidden price of carrying a balance. Card interest compounds month after month, so the real cost of a purchase can quietly grow far past the sticker price. This tool simulates your payoff one month at a time at the APR and payment you choose, then reports the total interest you hand the lender and how many months you stay on the hook. It turns a confusing statement into a single clear number.

To use it, enter your current card balance, set the APR with the slider, and type the fixed monthly payment you plan to make. The hero number is the total interest you will pay clearing the card. The first stat shows the months to payoff, and the second shows the total you pay overall, balance plus interest. The line chart traces your balance dropping toward zero so you can see how slow or fast the payoff really is.

Seeing interest as a dollar figure changes how it feels. A higher payment shortens the timeline and shrinks the interest dramatically, because less balance sits accruing each month. This calculator helps you decide how aggressively to attack the card so that more of your income stays with you instead of flowing to the issuer.