Avalanche · Snowball · Hybrid — see your debt-free date instantly

See your debt-free date — and how much faster the right strategy gets you there.

Enter your debts below. Results update in real time as you type.

Your Debts
Name Balance ($) APR (%) Min Payment ($/mo)
Total
$ $200
Total Balance Over Time
Payoff Order (Avalanche)
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Avalanche vs snowball — the one paragraph you need

The avalanche method attacks your highest-interest debt first. You pay minimums on everything else and throw every extra dollar at the debt with the worst APR. Mathematically, this minimizes total interest paid and gets you debt-free fastest in terms of money. The snowball method targets your smallest balance first. You get a paid-in-full "win" sooner, which research shows helps many people stay on track behaviorally. A hybrid approach lets you knock out one small balance for the psychological boost, then switch to avalanche for the rest — DebtFreePath models all three so you can see the real numbers side by side and choose.

How the rollover engine works

The secret sauce behind both methods is the "rollover." When Debt A is fully paid off, you don't reduce your monthly spending — you take that freed-up minimum payment and add it to what you're already putting toward the next target debt. So the attack gets bigger every time a debt disappears. The planner above models this exactly: the snowball accelerates because each cleared debt adds its minimum to the pile. The avalanche does the same but in APR-priority order.

With the default debts above ($18,900 total at blended ~18% APR) and an extra $200/month, the avalanche clears the Visa Card (24.99% APR) first, then rolls that payment into the Store Card (27.99% APR), and so on — saving hundreds of dollars vs paying minimums only.

Why high-APR debt is a financial emergency

At 24.99% APR, a $4,800 balance with a $120 minimum payment takes roughly 6+ years to pay off on minimums alone — and you'd pay nearly as much in interest as the original balance. At 27.99%, the math is even bleaker. The "minimums only" line on the chart above shows this clearly. The difference between the avalanche line and the minimums line is literally thousands of dollars you keep in your pocket.

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When snowball wins anyway

Behavior beats math if you quit before the math pays off. If you have several small debts and feel overwhelmed, knocking out the smallest balance in month 4 instead of month 8 can provide the emotional momentum to keep going. The calculator shows both scenarios: the avalanche saves more money; the snowball often provides earlier wins. Neither matters if you stop. Pick the one you'll actually stick to — or start with snowball to build confidence, then switch to avalanche. The compare tab lets you model this exactly.

Should I consolidate or balance-transfer?

A 0% balance-transfer card can be powerful if you can move high-interest balances before the promo period ends (typically 12–21 months). Transfer fees are usually 3–5% of the balance — still far cheaper than 24%+ APR over multiple years. A debt-consolidation loan replaces multiple debts with a single fixed monthly payment at a hopefully lower rate. Key watch-outs: don't accumulate new card balances after transferring, and calculate whether the transfer fee is worth it for your payoff timeline. The avalanche calculator above assumes your current APRs — if you consolidate, re-enter your new loan at its actual rate to see the updated payoff.

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Frequently asked questions

Avalanche is mathematically optimal — it minimizes total interest paid and typically gets you debt-free faster by calendar. Snowball is psychologically optimal for many people because early wins build momentum. The "best" method is the one you'll actually follow through on. Use the Compare tab to see the exact dollar and time difference for your specific debts.
Credit card interest is typically calculated daily on your average daily balance, then billed monthly. For planning purposes, the monthly rate is approximately APR ÷ 12. So a 24% APR card charges about 2% per month on the outstanding balance. This planner uses monthly compounding (APR/12), which is a very close approximation. Your actual statement interest may differ slightly due to daily compounding and billing-cycle timing.
Almost certainly yes. Credit utilization — how much of your available credit you're using — is the second most important factor in most credit scoring models, after payment history. Paying down revolving balances (credit cards) directly reduces utilization and typically improves your score within 1–2 billing cycles. Paying off installment loans (car, personal) has a smaller immediate utilization effect but demonstrates positive payment history over time.
Most financial planners suggest keeping a small emergency buffer ($1,000–$2,000) before aggressively paying down debt. Without it, the first unexpected expense — car repair, medical bill — forces you to add new credit-card charges at the same high APR you're trying to escape, erasing progress. Once you have a starter buffer, redirect as much as possible toward debt payoff. After the high-interest debt is gone, build that buffer to 3–6 months of expenses.
No — the planner assumes fixed starting balances with no new charges. If you continue using the cards during payoff, the actual timeline will be longer. For the model to be accurate, treat the debt balances as "frozen" amounts you're paying down, and use a debit card or cash for ongoing spending. Many people find it helpful to freeze (literally or figuratively) their credit cards while in debt-payoff mode.
A balance transfer moves debt from a high-APR card to a new card offering a 0% introductory rate (typically for 12–21 months). You pay a transfer fee of 3–5% upfront. If you can pay off the transferred balance before the promo period ends, you save significantly on interest. Run the numbers: if your card charges 24% APR and you'd pay $800 in interest over 18 months, a 3% transfer fee on a $3,000 balance is $90 — a clear winner. Watch out for any remaining balance when the 0% period expires, which will then accrue interest at the card's standard rate.
Educational estimates only. This calculator assumes fixed APRs, on-time payments, and no new charges. It is not financial advice. Your actual statement interest may differ slightly due to daily compounding and billing cycles. Debt-relief options (balance transfers, consolidation loans) may have fees, eligibility requirements, and trade-offs — research carefully or consult a certified credit counselor (NFCC.org) before acting.

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