Credit Card Payoff Calculator
Find out when you'll be debt-free and how much interest you'll pay. Compare minimum payments vs extra payments and see the true cost of credit card debt.
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How to Use This Calculator
Payoff Plan tab
The default tab. Enter your credit card balance, APR, and extra monthly payment. The calculator shows when you'll be debt-free, total interest paid, and compares your plan against minimum-only and aggressive payoff strategies. Expand "More options" to change the minimum payment method.
Minimum Payment Trap tab
See the true cost of paying only the minimum. The calculator shows a year-by-year breakdown of your remaining balance, revealing how most of your payment goes to interest in the early months. This is the trap credit card companies count on.
What If I Pay More? tab
Compare four preset extra payment amounts: +$50, +$100, +$200, and +$500 per month. See exactly how many months each saves and how much interest you avoid. Even small extra payments create a powerful snowball effect.
Share your result
Every input is encoded in the URL. Click Share to send your exact scenario to a partner, financial advisor, or anyone helping you plan.
The Formula
Credit card interest compounds monthly on your remaining balance:
Minimum Payment = max(Balance × 2%, $25)
Principal Paid = Payment − Monthly Interest
New Balance = Balance − Principal Paid
This loop repeats each month until Balance = $0.
The key insight: when you pay only the minimum, the payment shrinks as your balance drops. This means payoff stretches over decades and you pay far more in interest than you originally borrowed. Extra payments break this cycle by reducing principal faster, which lowers future interest charges.
Example
Lisa — Portland, OR
Lisa has an $8,200 credit card balance at 24.5% APR. Her card's minimum payment is 2% of balance or $25, whichever is greater. She's deciding whether to pay only the minimum or add $200/month extra.
Minimum payments only
With $200/month extra
By paying $200 extra per month, Lisa saves $11,400 in interest and is debt-free 23.5 years sooner. The extra $200/month costs her $2,400/year but eliminates $11,400 in interest — a 475% return on every extra dollar paid.