How Long to Pay Off a $21,000 Credit Card
Payoff time and total interest at a 22% APR by monthly payment.
Payoff by Monthly Payment (at 22% APR)
| Monthly payment | Time to pay off | Total interest |
|---|---|---|
| $500/mo | 6 yrs 9 mos (81 mo) | $19,449 |
| $750/mo | 3 yrs 4 mos (40 mo) | $8,733 |
| $1,000/mo | 2 yrs 3 mos (27 mo) | $5,760 |
| Minimum only (2%) | 100 yrs (1200 mo) | $172,882 |
Higher payments clear the balance faster and cut total interest. The minimum-payment row shrinks each month, which is why it takes so long.
The Minimum-Payment Trap
Paying only the minimum (about 2% of the balance, which falls as you pay down) would take 100 yrs and cost about $172,882 in interest on this $21,000 balance. Paying a fixed amount each month instead is dramatically faster and cheaper.
Last reviewed: November 2026
Data sources: Standard monthly-compounding credit card interest; Representative 22% APR (near the US average).
Disclaimer: Estimates use a fixed 22% APR and monthly compounding. Your card's APR, fees and minimum-payment formula may differ. Not financial advice.