When will you be debt-free?

The avalanche method (highest interest rate first) saves the most money and is usually fastest. The snowball method (smallest balance first) gives quicker wins that keep you motivated. The math favors avalanche; behavior often favors snowball. The calculator shows both side by side so you can see the exact difference in months and dollars for your debts, then pick the one you'll actually stick with.

The calculator simulates each month: it charges interest on every balance, applies your minimum payments, then puts all your extra money toward the target debt (highest-rate for avalanche, smallest-balance for snowball). When a debt hits zero, its payment rolls over to the next one. Your debt-free date is the month the last balance reaches zero.

A lot. Because interest compounds on your remaining balance, every dollar above the minimum goes straight at principal and erases all the future interest that dollar would have generated. Even an extra $50 to $100 a month can cut months, sometimes years, off your payoff and save hundreds or thousands in interest. Change the extra-payment field above to see the effect on your own numbers.

Build a small starter emergency fund (around $1,000) so a surprise expense doesn't push you back onto credit cards, then attack high-interest debt aggressively. Once high-interest debt is gone, split extra money between longer-term savings and investing. For most people, paying down anything above roughly 7 to 8% APR beats what you'd reliably earn investing.

Yes, completely free, with no signup, no email, and no limit on how many times you use it. Everything runs in your browser. If you want Spendify to sync your real balances and track your payoff automatically, that's the paid app, but the calculator is always free.