Debt Payoff Calculator

How to use the debt payoff calculator

1. Enter your debt balance and its interest rate.
2. Enter the monthly payment you plan to make.
3. Add an extra monthly payment to see what it saves.
4. Read the time to be debt free and the interest cost.

How debt payoff is worked out

This debt payoff calculator takes one fixed-rate debt, applies your monthly payment, and works out how many months clear it, your debt free date, and how much interest you pay. It is a loan payoff plan for any single debt, showing what it takes to pay off debt on schedule. It converts the annual rate to a monthly rate, charges interest on the remaining balance each month, and counts down until the debt reaches zero. If the payment cannot cover the monthly interest, it tells you, because the balance would never fall.

Snowball vs avalanche

When you have several debts, the order you clear them in matters. The avalanche method pays the highest-rate debt first, which saves the most interest overall. The snowball method pays the smallest balance first, which clears whole debts sooner and can be more motivating. Both work; avalanche is cheaper, snowball is often easier to stick to. This tool models one debt at a time, so you can compare them.

The value of paying extra

Any amount above your normal payment goes straight to the balance, so it shortens the debt and removes future interest. Enter an extra monthly payment and the tool shows the months and interest you save. Because interest is charged on the balance, the sooner you add extra, the more it helps.

An estimate, not financial advice

This models a single fixed-rate debt with a steady payment. Real debts can have variable rates, fees, or promotional periods, so check your own terms. This is not financial advice.

FAQ

How long will it take to pay off my debt?

Enter the balance, rate, and monthly payment. The tool shows the months to clear it and the total interest, and an extra payment shows the time saved.

What is the difference between snowball and avalanche?

Avalanche pays the highest-rate debt first and saves the most interest. Snowball pays the smallest balance first and clears debts sooner for motivation. Both are valid strategies.

Does paying extra really help?

Yes. Extra payments reduce the balance directly, so less interest is charged and the debt clears sooner. The earlier you add extra, the bigger the saving.

What if my payment is too small?

If the payment does not cover the monthly interest, the balance never falls. The tool warns you so you can increase the payment.

Is my information private?

Yes. Everything is calculated in your browser and nothing you enter is uploaded or saved.