Calchy.

How Long to Pay Off $8,000 at 15% APR with $100/Month

Paying $100.00/month on a $8,000 balance at 15% APR takes 246 yrs 6 mo and costs $287,800.00 in interest.

Payoff summary
Months to pay off
2958
246 yrs 6 mo
Total interest
$287,800
Total paid
$295,800
1st month interest
$100.00

Computed using the standard amortization formula (monthly compounding at APR/12). Assumes fixed payment with no new charges — real card statements may vary based on billing date, grace period, and fees.

Minimum payment warning: At ~$160.00/month (minimum), payoff takes 6 yrs 7 mo with $4,640.00 in interest — $-283,160.00 more than your $100/month plan.

Payment Schedule (First 6 Months)

MonthPaymentPrincipalInterestBalance
1$100.00$0.00$100.00$8,000.00
2$100.00$0.00$100.00$8,000.00
3$100.00$0.00$100.00$8,000.00
4$100.00$0.00$100.00$8,000.00
5$100.00$0.00$100.00$8,000.00
6$100.00$0.00$100.00$8,000.00

Showing first 6 of 2958 payments. Use the full calculator →

Compare Payment Amounts ($8,000 at 15% APR)

Monthly PaymentPayoff TimeTotal Interest
$100.00/mo ◀246 yrs 6 mo (2958 mo)$287,800.00current
$150.00/mo7 yrs 5 mo (89 mo)$5,350.00saves $282,450
$200.00/mo4 yrs 8 mo (56 mo)$3,200.00saves $284,600
$250.00/mo3 yrs 6 mo (42 mo)$2,500.00saves $285,300
$300.00/mo2 yrs 9 mo (33 mo)$1,900.00saves $285,900
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FAQ

How long to pay off $8,000 at 15% APR paying $100/month?
At $100.00/month on a $8,000 balance at 15% APR, payoff takes 246 years and 6 months (2958 payments). Total interest paid: $287,800.00.
How much interest will I pay on $8,000 at 15%?
With a $100/month payment you'll pay $287,800.00 in interest over 2958 months. Total out-of-pocket: $295,800.00.
What happens if I pay the minimum on $8,000 at 15%?
At the minimum payment (~$160.00/month), payoff takes 6 years and 7 months with $4,640.00 in interest — $-283,160.00 more than paying $100/month.
How do I pay off $8,000 faster?
Every extra dollar reduces both the balance and future interest. Adding $25 more per month (total $125) would cut roughly 592 months off your payoff time.