Debt Payoff Calculator
Enter each debt — balance, APR, minimum — plus what extra you can add monthly. Get your debt-free date, the payoff order, and the referee verdict: what snowball and avalanche each cost on your real numbers.
| Debt | Balance ($) | APR (%) | Min/mo ($) | |
|---|---|---|---|---|
⚖️ Honest referee: on YOUR numbers, snowball would take 2y 4m and $2,505 interest — a difference of $267 and 0 month(s). Decide if the psychology is worth it.
📌 Minimums only (no $200 extra): 3y 8m and $4,623 interest — your extra saves $2,385.
Rollover method: each cleared minimum joins the attack on the next debt · nothing you enter leaves this browser.
Spotted a mistake or have an idea? — errors get fixed and credited publicly.
Last reviewed: July 20, 2026 · Formulas verified by automated tests before every release.
How do I pay off multiple debts fastest?
Pay minimums on everything, aim all extra money at one target, and roll each cleared payment into the next attack. Target highest-APR first (avalanche) to minimize interest, or smallest balance first (snowball) for early wins. On a typical mix — $4,800 card at 24.9%, $9,500 car loan at 7.2%, $2,200 personal at 11.5% with $200 extra — both strategies land within about a year of each other; enter your numbers above to see your own gap.
The war nobody needed: snowball vs avalanche
The internet has turned two payoff orders into rival religions. One camp says psychology is everything and math got you into debt; the other says paying a cent of extra interest is irrational. Here's what the shouting hides: on many real debt mixes the difference is a few hundred dollars and a month or two — and on some it's thousands. There is no universal answer, only your answer. That's why this calculator refuses to preach: it computes both plans on your actual debts and prints the gap. If avalanche saves you $2,400, you deserve to know. If it saves $47, buy the early wins guilt-free.
The engine is the extra, not the order
The biggest lever isn't which debt goes first — it's the size of the monthly extra. Even a modest amount transforms the timeline, because every extra dollar skips the interest queue and lands straight on principal. Where does extra come from? The classic sources: one cancelled subscription (our subscription calculator finds the candidates), rounding payments up, and directing windfalls — tax refunds, bonuses — at the target debt. And a note on what belongs here: credit cards and personal loans, yes; your mortgage usually no — it amortizes on different math, which the amortization calculator handles, including what early payments do there.
How long does credit card payoff actually take?
The answer swings wildly with the payment size — which is exactly the point. Four honest single-card scenarios (fixed payment, no new charges):
| Balance · APR | Paying | Debt-free in | Interest paid |
|---|---|---|---|
| $2,000 · 20% | $100/mo | 25 months | $453 |
| $5,000 · 24.9% | $150/mo | 58 months | $3,594 |
| $5,000 · 24.9% | $300/mo | 21 months | $1,200 |
| $8,000 · 22% | $200/mo | 73 months | $6,551 |
Read the middle rows twice: doubling the payment on the same $5,000 card cuts the sentence from five years to under two — and keeps $2,394 out of the bank's pocket. For your own cards and their real order, the calculator above does the full multi-debt math.
Two rate levers to pull before the marathon
Payoff order optimizes the race; these two shorten the track itself. First, call the issuer and ask for a lower APR — it works more often than people expect, especially with on-time history, and even a few points change the table above meaningfully. Second, a 0% intro balance transfer can freeze interest for 12–21 months — genuinely powerful if you account for the transfer fee (typically 3–5%), qualify on credit, and — the honest part — don't treat the freed card as new spending room. Neither lever replaces the plan; both make every payment in it work harder.
Sources, assumptions and limitations
- Assumptions: Monthly compounding at each debt's APR; minimums stay fixed as entered.Rollover applied: cleared minimums and the extra always attack the current target.Strategies differ only in target order: smallest balance (snowball) vs highest APR (avalanche).New charges, fees, and rate changes are not modelled — the plan assumes the bleeding has stopped.Educational math, not financial advice · nothing you enter is stored or transmitted.
- Sources:
- Last reviewed: by the CalcNotebook team
Frequently asked questions
Which is better — debt snowball or debt avalanche?
Mathematically, avalanche (highest APR first) always wins or ties: it minimizes total interest. Psychologically, snowball (smallest balance first) delivers early wins that keep people going. The honest answer is that the gap depends on your numbers — sometimes it's thousands, often it's surprisingly small. This calculator runs both on your actual debts and shows the difference in dollars and months, so you're choosing with open eyes instead of picking a side in someone else's war.
How does the rollover (snowball effect) work?
You pay minimums on everything and aim all extra money at one target debt. When it's gone, its minimum payment doesn't return to your budget — it joins the extra and attacks the next debt. Payments grow as debts fall, which is why the last debts vanish far faster than the first. Both strategies use this engine; they only differ in target order.
What happens if I only pay minimums?
On high-APR credit cards, minimums are designed to mostly cover interest, so the balance barely moves — payoff can take decades and cost more in interest than the original debt. The calculator shows your minimums-only timeline next to your plan, which is usually the most motivating number on the page.
Should I include my mortgage here?
Usually no. Mortgage rates are typically far lower than card or personal-loan rates, the balance dwarfs everything else, and the payoff math works differently (see our amortization calculator for that). This tool shines for credit cards, car loans, personal loans, medical debt and similar.
Is it better to save or pay off debt first?
A common approach: keep a small emergency buffer (so a surprise doesn't go straight onto a card), then attack high-APR debt hard — no savings account reliably beats a 25% card rate. Once high-interest debt is gone, redirect the freed payments into savings. That's general education, not personal advice; your situation may differ.
How much should I pay monthly to be debt-free by a specific date?
Work it backwards in the calculator: set your debts, then raise the extra amount until the debt-free date lands where you want it. As a rough single-debt anchor, balance ÷ months gets you close, then add a cushion for interest — at 20-25% APR roughly 10-15% more for shorter timelines. The exact answer always comes from running your real numbers.
Do you store my debts?
No — and for this page that matters more than most. Balances and rates are among the most private numbers people have. Everything runs in this browser tab; nothing is uploaded, saved, or shared. No sign-up, ever.