What is the debt snowball method?

You pay the minimum on every debt and throw all extra money at the smallest balance. When it is gone, its minimum payment rolls into the next-smallest debt, so the payment “snowballs”. It is the method popularized by Dave Ramsey; the quick early wins keep people motivated.

What is the debt avalanche method?

Same mechanics, but the extra money goes to the debt with the highest interest rate first. Mathematically it always costs the same or less in interest and finishes the same or sooner; the calculator shows the exact difference for your debts, which is often smaller than people expect.

Snowball or avalanche — which should I choose?

If the interest difference shown above is small (under a few hundred dollars), pick snowball for the motivation. If you have one high-rate card far above the others, avalanche can save real money. The most important variable is the extra amount you pay every month, not the order.

Should I include my mortgage or car loan?

Most people snowball only consumer debt — credit cards, personal loans, medical bills, car loans, private student loans — and keep the mortgage on its normal schedule. Federal student loans with income-driven plans are usually left for last too.

What if I cannot afford an extra payment?

Enter 0. The calculator still shows how the freed minimums accelerate payoff as each debt is cleared, and how many months paying minimums alone would take. Even $25 a month extra shortens the timeline noticeably.

Debt Snowball Calculator

Name: Debt Snowball Calculator
Author: Miikka

List every debt with its balance, interest rate and minimum payment, add the extra amount you can pay each month, and see the order your debts disappear, your debt-free date and the total interest — for the snowball method (smallest balance first) and the avalanche method (highest rate first), side by side.

By Miikka · CalcBrew · Updated Sep 16, 2026

Debt	Balance ($)	APR (%)	Minimum ($/mo)

Extra paid each month ($)

Method

Total owed $33,700 · minimums $625/mo · you pay $925/mo until everything is gone.

Debt-free in

3 yr 5 mo

Mar 2030

Total interest (snowball)

$4,109

vs $8,446 paying minimums only (68 mo)

Snowball vs avalanche

$4,109 vs $4,109

41 mo vs 41 mo · avalanche saves $0

Payoff order (snowball)	Paid off	Month
1. Credit card	Oct 2027	12
2. Car loan	Oct 2028	24
3. Student loan	Mar 2030	41

How the snowball is simulated

Each month every debt accrues interest (balance × APR ÷ 12) and receives its minimum payment. The extra amount, plus the minimums of any debts already paid off, goes to the target debt — the smallest balance for the snowball, the highest rate for the avalanche. When the target is cleared, any leftover money in that month moves to the next target immediately, so nothing is wasted.

Worked example: a $4,200 card at 24.99 % ($125 minimum), an $11,500 car loan at 7.5 % ($310) and an $18,000 student loan at 5.5 % ($190) with $300 extra a month: the snowball clears the card in 12 months, the car loan in 24 and the student loan in 41, paying about $4,100 in interest. Paying minimums only would take 68 months — almost six years — and cost about $8,400, twice as much.

Snowball vs avalanche at a glance

	Snowball	Avalanche
Order	Smallest balance first	Highest interest rate first
Strength	Quick wins, fewer accounts sooner	Least total interest, fastest in theory
Best when	Rates are similar or motivation is the problem	One debt has a much higher rate
Typical difference	A few hundred dollars and 0–3 months on a typical mix; the extra monthly amount matters far more

Frequently asked questions

Cite this calculator

APACalcBrew. (2026). Debt Snowball Calculator. https://calcbrew.com/debt-snowball-calculator

MLA“Debt Snowball Calculator.” CalcBrew, 2026, calcbrew.com/debt-snowball-calculator.

Link to https://calcbrew.com/debt-snowball-calculator. Results are estimates; cite the underlying formula or data source for academic work.

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