Debt Payoff Calculator

Use this free debt payoff calculator to see when you can be debt-free and how much interest you’ll pay. Add your credit cards and loans, choose the debt avalanche or debt snowball method, and see how an extra monthly payment speeds things up.

How to Use This Debt Payoff Calculator

1. List your debts. For each credit card or loan, enter the current balance, the APR, and the minimum monthly payment. You’ll find all three on your latest statement. Add up to 10 debts.
2. Add an extra payment. Enter any amount you can pay each month on top of your minimums. Even $25 or $50 makes a difference.
3. Pick a strategy. Choose Avalanche to target the highest APR first or Snowball to target the smallest balance first.
4. Review your plan. The calculator shows your debt-free date, total interest, the order your debts get paid off, and how both strategies compare with paying only the minimums.

How the Calculator Works

Each month, the calculator adds interest to every debt (APR ÷ 12 × balance), pays the minimum on each one, and sends all remaining money to your target debt. When a debt is paid off, its minimum payment “rolls over” to the next target. Your total monthly payment stays the same, so each payoff speeds up the next one.

The “minimum payments only” comparison keeps each debt’s minimum payment fixed and doesn’t roll freed-up money forward. This shows what happens if you change nothing.

Debt Avalanche vs. Debt Snowball

	Debt avalanche	Debt snowball
Pay extra toward	Highest APR first	Smallest balance first
Total interest	Lowest possible	Usually a bit higher
First payoff	Can take longer	Usually comes fastest
Best for	Saving the most money	Staying motivated with quick wins

Mathematically, the avalanche method always costs the same or less in interest because your extra money attacks the most expensive debt first. The snowball method can still be a smart choice. Paying off a whole account quickly gives you a visible win, and a plan you stick with beats a “perfect” plan you abandon.

Debt Payoff Example

Here are the sample debts preloaded in the calculator, with a total balance of $18,500:

Debt	Balance	APR	Minimum payment
Credit card	$4,500	24.99%	$135
Store card	$1,200	29.99%	$40
Car loan	$9,800	7.50%	$285
Personal loan	$3,000	12.00%	$110

The minimums add up to $570 a month. Adding $200 extra brings the total to $770 a month. Here’s how each approach plays out:

Strategy	Debt-free in	Total interest
Avalanche ($770/month)	2 years, 4 months	$2,794
Snowball ($770/month)	2 years, 4 months	$3,031
Minimum payments only ($570/month)	4 years, 10 months	$6,093

Both strategies cut the payoff time roughly in half and save about $3,000 or more in interest compared with paying only the minimums. In this example, the avalanche method saves an extra $237 over the snowball method.

Both plans pay off the store card first, in month 6. After that, the avalanche method targets the 24.99% credit card (paid off in month 19), while the snowball method targets the smaller personal loan (paid off in month 14). That earlier win is the snowball’s appeal, but leaving the high-APR credit card for later costs more in interest.

Which Method Should You Choose?

• Choose avalanche if your debts have very different APRs, especially high-interest credit cards, and you’re motivated by saving money.
• Choose snowball if you have several small balances and need early wins to stay on track.
• It barely matters if your APRs are similar. In that case, both methods finish at about the same time with about the same interest.

Toggle between the two strategies in the calculator to see the real difference for your own debts.

Tips to Pay Off Debt Faster

• Stop adding new charges. Any new balance on a card you’re paying down pushes your debt-free date back.
• Keep your total payment the same. When a debt is paid off, move its payment to the next debt instead of spending it.
• Put windfalls to work. Tax refunds, bonuses, and raises can go straight to your target debt.
• Ask for a lower rate. Some card issuers will lower your APR if you have a good payment history. A lower APR means more of each payment goes to principal.
• Compare consolidation options carefully. A balance transfer card or debt consolidation loan can lower your rate, but watch for transfer fees, promotional periods that end, and longer terms that raise total cost.
• Get free or low-cost help if you’re struggling. A reputable nonprofit credit counseling agency can review your budget and may offer a debt management plan. Be wary of companies that charge upfront fees or promise to settle debts for “pennies on the dollar.”

Frequently Asked Questions

Why does paying only the minimum take so long?

On high-APR credit cards, a large share of each minimum payment goes to interest, so the balance shrinks slowly. The Federal Reserve reports that average credit card interest rates are above 20%, which is why extra payments on cards make such a big difference.

Should I pay off debt or save for emergencies first?

Many people keep a small emergency cushion while paying down debt so a surprise expense doesn’t go on a credit card. How much to keep depends on your income stability and expenses.

Does the calculator include my mortgage?

You can add any debt with a balance, APR, and minimum payment. Many people leave out their mortgage and focus on higher-interest debts like credit cards and personal loans.

Why is my actual payoff date different?

Lenders calculate interest in different ways (for example, by average daily balance), minimum payments on credit cards often fall as the balance falls, and rates can change. Use this calculator to compare strategies, then check exact figures with your lenders.

What if the calculator says my debt won’t be paid off?

That means your payments don’t cover the monthly interest. Try a larger extra payment, check that your minimums are correct, or consider speaking with a nonprofit credit counselor.

Sources

• Federal Trade Commission: How To Get Out of Debt
• Consumer Financial Protection Bureau: What is a debt relief program?
• Federal Reserve: Consumer Credit (G.19), including credit card interest rates

This calculator provides estimates for educational purposes only and is not financial advice. Actual payoff dates and interest depend on your lenders’ terms, rate changes, and fees. Last updated: October 12, 2026.