Debt Payoff Calculator
Knowing your debt payoff timeline is the first step to becoming debt-free, and seeing the numbers laid out is often the motivation people need to attack a balance aggressively rather than making minimum payments for years. This calculator shows how many months it takes to clear any balance at a given interest rate and monthly payment, plus the total interest you'll pay along the way. Enter your current debt balance, the annual interest rate (APR), and the monthly payment you can afford, and the calculator returns the payoff time in months, the total interest cost, and the total amount you'll pay. If your monthly payment doesn't cover the monthly interest, the debt actually grows each month and can never be paid off — the calculator flags this so you can raise your payment before the balance spirals. Paying more than the minimum is one of the highest-return moves in personal finance, because every extra dollar above the minimum goes straight to principal, cutting both the time to payoff and the total interest you'll pay. A balance that would take years to clear at the minimum payment can often be cleared in a fraction of the time by paying a bit more each month, and the interest savings are substantial — on a high-APR credit card, doubling the monthly payment can cut the payoff time by more than half. This calculator works for any amortizing debt: credit cards, personal loans, medical debt, auto loans, or any balance with an APR and a fixed monthly payment. To pay off debt faster, increase your monthly payment, lower your interest rate through a refinance or balance transfer, or use the debt avalanche method of targeting the highest-APR debt first. Use it before you borrow, to see the true cost of a loan, and after, to plan an accelerated payoff that frees up your cash flow for saving and investing.
Debt Payoff Calculator
Find out how long it takes to pay off a debt and the total interest you'll pay.
Time to pay off
62 months
5.2 years
Total interest paid
$11,000
Total paid
$31,000
If your payment doesn't cover the monthly interest, the debt will grow forever. Even a small increase in your monthly payment can shave years off your payoff time.
How to Use This Calculator
- 1Enter your current debt balance.
- 2Enter the annual interest rate (APR).
- 3Enter the monthly payment you can afford.
- 4Read the payoff time and total interest.
Why It Helps
- ✓Shows the exact payoff timeline.
- ✓Reveals the true interest cost of debt.
- ✓Flags payments too low to ever clear the debt.
- ✓Helps you plan a faster payoff strategy.
About This Calculator
Knowing your debt payoff timeline is the first step to becoming debt-free, and seeing the numbers laid out is often the motivation people need to attack a balance aggressively rather than making minimum payments for years. This calculator shows how many months it takes to clear any balance at a given interest rate and monthly payment, plus the total interest you'll pay along the way. Enter your current debt balance, the annual interest rate (APR), and the monthly payment you can afford, and the calculator returns the payoff time in months, the total interest cost, and the total amount you'll pay. If your monthly payment doesn't cover the monthly interest, the debt actually grows each month and can never be paid off — the calculator flags this so you can raise your payment before the balance spirals. Paying more than the minimum is one of the highest-return moves in personal finance, because every extra dollar above the minimum goes straight to principal, cutting both the time to payoff and the total interest you'll pay. A balance that would take years to clear at the minimum payment can often be cleared in a fraction of the time by paying a bit more each month, and the interest savings are substantial — on a high-APR credit card, doubling the monthly payment can cut the payoff time by more than half. This calculator works for any amortizing debt: credit cards, personal loans, medical debt, auto loans, or any balance with an APR and a fixed monthly payment. To pay off debt faster, increase your monthly payment, lower your interest rate through a refinance or balance transfer, or use the debt avalanche method of targeting the highest-APR debt first. Use it before you borrow, to see the true cost of a loan, and after, to plan an accelerated payoff that frees up your cash flow for saving and investing.
Disclaimer: This calculator provides estimates for educational purposes only and does not constitute financial, tax, or investment advice. Results depend on assumptions that may not reflect your actual situation.
Frequently Asked Questions
What happens if my payment is too low?
If your payment doesn't cover the monthly interest, the balance grows and the debt is never paid off. The calculator will show 'Never'.
How can I pay off debt faster?
Increase your monthly payment, lower your interest rate (refinance or balance transfer), or use the debt avalanche method targeting the highest-APR debt first.
Does this work for any type of debt?
Yes — credit cards, personal loans, medical debt, or any amortizing balance with an APR and fixed monthly payment.
Should I pay off debt or invest instead?
Generally, pay off any debt with an APR above 6-8% before investing extra cash, since guaranteed interest savings beat expected market returns.
Does it include extra or irregular payments?
No, it assumes a fixed monthly payment. For irregular payments, model a higher average monthly payment.
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Written by
James MitchellSenior Financial Analyst & Personal Finance Expert
Certified Financial Planner (CFP) • MBA in Finance, University of Chicago Booth School of Business