See when your debts hit zero

Enter what you owe once. Compare the avalanche and snowball payoff methods side by side, with a payoff date, total interest, and a month-by-month schedule you can export.

Independent tool. Not affiliated with any government agency, bank, or lender, and not financial advice. It only does arithmetic on the numbers you enter.

Everything below runs in this browser tab. Nothing you type is sent anywhere, saved to a server, or requires an account.

Your debts

Debt Balance APR % Min. payment Remove

Must be at least the sum of your minimum payments. Extra above that is what gets thrown at one debt at a time.

Frequently asked questions

What's the difference between avalanche and snowball?

Avalanche puts every spare dollar toward the debt with the highest interest rate first, and pays the minimum on everything else. Snowball ignores interest rate and clears the smallest balance first. Avalanche always matches or beats snowball on total interest paid, because it's the mathematically interest-minimizing order. Snowball can still finish sooner in months if a small, low-rate debt would otherwise sit untouched for years. This calculator runs both methods on your actual debts, so you can compare the real numbers instead of picking one on faith.

Why does my payoff date change if I only add $20 to my budget?

Once your minimums are covered, every extra dollar compounds. It clears a balance sooner, which frees up that debt's minimum payment to roll onto the next one, and that one clears sooner too. A small increase early in a long payoff often moves the finish date more than the same increase would late in the schedule, simply because there's more time left for the freed-up minimums to cascade.

Does this calculator store or send my numbers anywhere?

No. Your debts and budget are kept only in this browser's local storage, on this device, so the form refills itself if you come back. There's no server, no account, and no analytics tied to what you type. Clearing your browser data, or pressing "Clear saved data" above, removes it completely.

Why do I need to enter a minimum payment for every debt?

Missing a minimum payment can trigger late fees and affect your credit file, whichever payoff order you follow. This tool always pays every minimum first, each month, before it applies any extra budget, so the schedule it produces keeps every account current.

What does rounding to the cent mean for the total?

Interest is calculated and rounded to the nearest cent each month, the way a statement would show it, rather than carried as a long decimal. Over a multi-year schedule this can shift the total interest figure by a few cents against an unrounded calculation, never by dollars.

Is this financial advice?

No. This tool computes arithmetic on the numbers you enter. It doesn't know your full financial situation and doesn't recommend a course of action. What you do with the results is your decision.