Calchy.

How Long to Pay Off $1,000 at 10% APR with $300/Month

Paying $300.00/month on a $1,000 balance at 10% APR takes 4 mo and costs $200.00 in interest.

Payoff summary
Months to pay off
4
4 mo
Total interest
$200
Total paid
$1,200
1st month interest
$8.33

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.

Minimum payment warning: At ~$25.00/month (minimum), payoff takes 4 yrs 1 mo with $225.00 in interest — $25.00 more than your $300/month plan.

Payment Schedule (First 4 Months)

MonthPaymentPrincipalInterestBalance
1$300.00$291.67$8.33$708.33
2$300.00$294.10$5.90$414.24
3$300.00$296.55$3.45$117.69
4$300.00$117.69$0.98$0.00

Compare Payment Amounts ($1,000 at 10% APR)

Monthly PaymentPayoff TimeTotal Interest
$50.00/mo1 yr 10 mo (22 mo)$100.00costs $-100 more
$100.00/mo11 mo (11 mo)$100.00costs $-100 more
$150.00/mo7 mo (7 mo)$50.00costs $-150 more
$200.00/mo6 mo (6 mo)$200.00costs $0 more
$250.00/mo5 mo (5 mo)$250.00costs $50 more
$300.00/mo ◀4 mo (4 mo)$200.00current
$400.00/mo3 mo (3 mo)$200.00saves $0
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FAQ

How long to pay off $1,000 at 10% APR paying $300/month?
At $300.00/month on a $1,000 balance at 10% APR, payoff takes 4 months (4 payments). Total interest paid: $200.00.
How much interest will I pay on $1,000 at 10%?
With a $300/month payment you'll pay $200.00 in interest over 4 months. Total out-of-pocket: $1,200.00.
What happens if I pay the minimum on $1,000 at 10%?
At the minimum payment (~$25.00/month), payoff takes 4 years and 1 month with $225.00 in interest — $25.00 more than paying $300/month.
How do I pay off $1,000 faster?
Every extra dollar reduces both the balance and future interest. Adding $75 more per month (total $375) would cut roughly 1 months off your payoff time.