Calculate debt payoff time with extra payments, total interest cost, and required payment for a goal date. Compare extra payment scenarios.
How long will it take to pay off your debt? And how much faster could you be debt-free with extra payments? These are the two most important questions for anyone carrying a balance — and this calculator answers both precisely.
Making only minimum payments on high-interest debt stretches repayment over years or even decades, with a shocking amount going to interest. A credit card balance of $15,000 at 19% with minimum payments can take over 20 years and cost more in interest than the original balance. That is why a payoff plan needs to show both time and total cost, not just the monthly bill.
This calculator shows the exact payoff timeline for any debt, the total interest cost, and how extra payments change the equation. Enter your balance, rate, and payments to see a detailed amortization schedule. The extra-payment scenario table reveals the sweet spot — where modest additional payments produce dramatic time and interest savings. Check the example with realistic values before reporting.
Visualizing the cost of debt and the impact of extra payments motivates action. This calculator shows you exactly how much money you save with each extra dollar and how many months sooner you will be free of the debt. It also calculates the required payment to hit a specific payoff goal date, which makes it easier to compare payoff plans side by side.
Monthly Interest = Balance × (Annual Rate / 12). Principal = Payment − Interest. Months to pay off (standard) = −ln(1 − Balance × r/PMT) / ln(1 + r) where r is the monthly rate.
Result: Payoff: 33 months — Interest: $3,700 — Saved $5,500 vs min-only
With $550/mo total ($350 min + $200 extra), a $15,000 balance at 18.99% pays off in 33 months with $3,700 interest. Minimum payments alone would take 62 months with $9,200 interest — the extra $200/mo saves $5,500 and 29 months.
In the early part of a loan, most of each payment goes to interest. Extra payments help most when the balance is still high, because every dollar of principal removed stops future interest from accruing on that amount. That is why the first extra payments usually create the biggest savings.
The best payoff plan is the one you can sustain every month. A slightly smaller extra payment that you can keep making is usually better than an aggressive amount that forces you to stop later. Use the scenario table to find a plan that fits your cash flow and still makes a meaningful dent in the term.
Tax refunds, bonuses, and other one-time inflows can do a lot of work on high-rate debt. Applying them as lump sums near the start of a payoff plan can shorten the timeline much more than spreading them out loosely over time.
As much as you can comfortably afford after covering essentials and maintaining a small emergency fund. Even $25-50 extra helps. Use the scenario table to see the impact at different levels and choose what fits your budget.
If your debt rate exceeds expected investment returns (typically 7-10% for stocks), pay off debt first. Credit card debt at 20%+ should almost always be prioritized. Low-rate debt (under 5%) might be worth keeping while investing.
Minimum payments are designed to keep you in debt. On high-rate debt, most of the minimum goes to interest, leaving very little to reduce the principal. Credit card companies set minimums at 1-3% of the balance — barely above the interest charges.
This calculator focuses on a single debt with detailed payoff analysis and scenarios. The debt calculator handles multiple debts simultaneously with avalanche/snowball strategy comparison. Use this for deep analysis of one debt, or that one for managing multiple debts.
Yes. Call your credit card company and ask for a rate reduction. Having a good payment history strengthens your position. Balance transfer offers with 0% intro APR can eliminate interest for 12-21 months while you aggressively pay down principal.
Missing payments triggers late fees, potential penalty APR increases (up to 29.99%), and credit score damage. Set up autopay for at least the minimum to avoid this. Extra payments should be on top of the minimum, not in place of it.