A walkthrough, end to end.
- 1
Enter each debt: balance, APR, and minimum monthly payment.
- 2
Set your total monthly debt budget (must cover all minimums plus extra).
- 3
The calculator simulates both snowball and avalanche strategies and shows which finishes faster and saves more interest.
Snowball vs Avalanche
Both methods pay all minimums every month. The difference is where the EXTRA money goes. Snowball: extra goes to the smallest-balance debt for quick psychological wins. Avalanche: extra goes to the highest-rate debt to minimize total interest. Avalanche always wins on math; snowball often wins on follow-through.
What you can do with this.
Multiple credit card payoff
Most common scenario: 2–4 cards with different balances and APRs. Avalanche typically saves $500–$2,000 in interest vs snowball over the payoff period — meaningful but not life-changing.
Snowball method
Order debts smallest to largest. Pay minimums on all; throw extra at the smallest. When that's gone, roll its minimum into the next-smallest. Wins on momentum and psychology.
Avalanche method
Order debts highest APR to lowest. Pay minimums on all; throw extra at the highest-APR debt. Mathematically optimal — saves the most interest. Wins for disciplined budgeters.
Mixed: cards + student loans + auto
If your highest-APR debt is a credit card (often 20%+), avalanche typically targets cards first, then auto, then student loans (lowest rates). The order tracks rate, not type.
When to choose snowball
If you've struggled to stick with payoff plans before, snowball's faster early wins help adherence. The interest 'cost' of choosing snowball over avalanche is the price of consistency — often worth it.
Budget that doesn't cover minimums
If total minimum payments exceed your monthly budget, no method works. Time to call lenders for hardship programs, consolidate via personal loan, or consult a non-profit credit counselor.
Adding extra income
Tax refunds, bonuses, or side-income should go entirely to the focus debt during a payoff sprint. The calculator shows how much faster lump sums shorten the timeline.
Debt payoff calculator 2026 — what's current
With credit card APRs at ~23% (Federal Reserve, 2026), avalanche savings vs snowball are larger than in past low-rate eras. The math case for avalanche is strong; the behavioral case for snowball is independent.
Frequently asked.
Avalanche always saves more money. Snowball wins for many people because of better adherence — the 'best plan you'll actually follow' beats the 'optimal plan you'll abandon'.
Federal student loans often have low APRs (4–7%) and special protections (forgiveness, IDR). Don't aggressively prepay them at the expense of high-rate cards. Avalanche naturally handles this.
Generally no — only after higher-rate debts are gone. The exception: small loans you can wipe out in a month or two for psychological momentum (snowball logic).
No. Calculations run entirely in your browser.