Analyse your debt-free date with a plan that coordinates all your balances at once. Enter your debts, pick the avalanche or snowball strategy, and see exactly when each account clears and how much interest you'll save.
This debt payoff calculator is built for people carrying more than one balance at the same time. You list every debt, and it treats them as a single coordinated plan rather than isolated bills. The engine supports the two strategies financial coaches argue about most: the avalanche method, which targets the highest interest rate first to minimize total cost, and the snowball method, which clears the smallest balance first for fast psychological wins. You can also add an extra monthly amount on top of your minimums to see how quickly the timeline shrinks. The output is practical, not theoretical: a debt-free date, the order in which each account disappears, and the total interest each approach costs. It is designed for US borrowers using dollar figures, fixed monthly budgets, and standard revolving or installment debt structures.
List each debt you owe, giving it a name like "Visa" or "Auto loan" so the plan is easy to follow.
Enter the current balance for every debt as a dollar amount.
Add the annual interest rate (APR) for each balance, found on your latest statement.
Type the minimum monthly payment required on each account.
Enter any extra amount you can put toward debt each month beyond the combined minimums.
Choose your strategy: avalanche to save the most money, or snowball to clear accounts fastest.
Click calculate to see your debt-free date, payoff order, and total interest.
Toggle between avalanche and snowball to compare the two timelines side by side before committing.
The calculator runs a month-by-month simulation. Each month, interest is added to every balance using the formula: monthly interest = balance × (APR ÷ 12). Your payment for that account first covers this interest, and whatever is left reduces the principal. Minimum payments go to every debt, but your extra money is funneled entirely to one target account. Under the avalanche method, that target is the debt with the highest APR. Under the snowball method, it is the debt with the smallest remaining balance. When one debt hits zero, its old payment rolls onto the next target, which is why momentum builds. The simulation repeats until every balance reaches zero, counting the months and adding up all interest charged along the way. That total interest figure is what lets you compare strategies in real dollars.
Your result has three parts that matter. The debt-free date tells you the month your last balance disappears if you stick to the plan. The payoff order shows which account clears first, second, and so on, which is useful for staying motivated. The total interest paid is the number to watch most closely, because it represents money that bought you nothing. When you switch from snowball to avalanche, the debt-free date often stays close, but the total interest usually drops, sometimes by hundreds or thousands of dollars. If the two strategies produce nearly identical interest totals, choose snowball for the motivation boost. If avalanche saves a meaningful amount, the discipline pays off. Use the result as a commitment device, not a one-time curiosity.
Several inputs move your payoff timeline more than others. Interest rate is the biggest lever: a balance at 24% APR grows far faster than one at 7%, which is why avalanche prioritizes it. Your extra monthly payment is the second lever, because every dollar above the minimum attacks principal directly. The number of debts matters too, since rolling payments compound your progress as accounts close. Minimum payment size affects how much breathing room you have early on. Finally, behavior is a hidden factor no formula captures: adding new charges to a card you are trying to clear resets your progress. With existing credit card accounts averaging roughly 22.3% APR in 2026, prioritizing high-rate revolving debt almost always produces the largest savings.
Sarah owes $6,000 on a credit card at 23% APR (minimum $150), $4,000 on a personal loan at 11% (minimum $120), and $9,000 on a car loan at 6% (minimum $280). Her combined minimums are $550, and she can pay $750 total, leaving $200 extra. Using avalanche, the $200 attacks the 23% card first. That card clears in roughly 19 months, then its payment rolls to the personal loan. Her entire $19,000 is gone in about 30 months, with total interest near $3,250.
Same debts, same $750 monthly budget, but Sarah picks snowball. The $200 extra now targets the $4,000 personal loan first because the car loan, despite being larger, is not the smallest. Wait, the smallest is the $4,000 personal loan, so it clears in about 13 months. The payoff order feels faster early, and she stays motivated, finishing in roughly 31 months. Her total interest lands near $3,500, about $250 more than avalanche, a modest price for momentum.
Always pay at least the minimum on every debt; missing one triggers fees and credit damage that dwarf any strategy gains.
Funnel windfalls like tax refunds or bonuses straight to your target debt to shave months off the timeline.
Stop adding new charges to any card you are actively paying down, or the calculator's plan becomes fiction.
Recalculate every few months as balances drop and your extra payment grows; momentum should accelerate.
Pick avalanche if the interest savings are real and meaningful, but pick snowball if you need quick wins to stay committed.
Consider a balance transfer or lower-rate consolidation only after you have run both numbers here first.
It combines all your debts into one plan and shows your debt-free date, the order accounts clear, and total interest paid. You compare strategies before committing real money.
Avalanche saves the most interest by targeting the highest rate first. Snowball clears the smallest balance first for faster motivation. The calculator shows both so you can choose.
Every dollar above your minimums attacks principal directly. Even $100 extra a month can cut a multi-debt timeline by many months and save hundreds in interest.
Yes. It applies each debt's APR monthly, adds interest to the balance, then subtracts your payment. Higher-rate debts grow faster, which is why avalanche prioritizes them.
Lowering balances typically reduces your credit utilization, which often helps your score over time. Closing the accounts is a separate decision with its own effects.
Keep a small emergency cushion, then attack high-interest debt aggressively, since few savings accounts beat a 22% APR. The calculator helps you see that cost clearly.
Yes, it is completely free with no signup. Enter your balances, rates, and payments to see your personalized debt-free plan instantly.
Brief disclaimer: This calculator provides estimates for educational and planning purposes only. Actual payoff timelines, interest charges, and savings depend on your specific account terms, rate changes, and payment consistency. Results should be treated as planning guidance rather than financial advice.