Calchy.

How Long to Pay Off $4,000 at 25% APR with $300/Month

Paying $300.00/month on a $4,000 balance at 25% APR takes 1 yr 4 mo and costs $800.00 in interest.

Payoff summary
Months to pay off
16
1 yr 4 mo
Total interest
$800
Total paid
$4,800
1st month interest
$83.33

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.

Payment Schedule (First 6 Months)

MonthPaymentPrincipalInterestBalance
1$300.00$216.67$83.33$3,783.33
2$300.00$221.18$78.82$3,562.15
3$300.00$225.79$74.21$3,336.36
4$300.00$230.49$69.51$3,105.87
5$300.00$235.29$64.71$2,870.58
6$300.00$240.20$59.80$2,630.38

Showing first 6 of 16 payments. Use the full calculator →

Compare Payment Amounts ($4,000 at 25% APR)

Monthly PaymentPayoff TimeTotal Interest
$100.00/mo7 yrs 3 mo (87 mo)$4,700.00costs $3,900 more
$150.00/mo3 yrs 4 mo (40 mo)$2,000.00costs $1,200 more
$200.00/mo2 yrs 3 mo (27 mo)$1,400.00costs $600 more
$250.00/mo1 yr 8 mo (20 mo)$1,000.00costs $200 more
$300.00/mo ◀1 yr 4 mo (16 mo)$800.00current
$400.00/mo1 yr (12 mo)$800.00saves $0
$500.00/mo9 mo (9 mo)$500.00saves $300
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FAQ

How long to pay off $4,000 at 25% APR paying $300/month?
At $300.00/month on a $4,000 balance at 25% APR, payoff takes 1 year and 4 months (16 payments). Total interest paid: $800.00.
How much interest will I pay on $4,000 at 25%?
With a $300/month payment you'll pay $800.00 in interest over 16 months. Total out-of-pocket: $4,800.00.
How do I pay off $4,000 faster?
Every extra dollar reduces both the balance and future interest. Adding $75 more per month (total $375) would cut roughly 3 months off your payoff time.