Debt Snowball Calculator

Pay off debt fastest with the snowball method — smallest balance first.

Strategy:

Smallest balance first — quick wins build momentum

Extra monthly payment ($):

Your Debts

Name	Balance ($)	Min Payment ($)	APR (%)

months to debt-free

Aug 2030

estimated debt-free date

$4084

total interest paid

Snowball vs Avalanche

Snowball

48 months

$4084 interest

Free: Aug 2030

Avalanche

47 months

$4003 interest

Free: Jul 2030

Avalanche saves you $80 in interest vs Snowball and finishes 1 month(s) sooner.

Payoff Order — Snowball

Credit Card BMonth 6 — Feb 2027

$1200 balance · 24.99% APR · $35/mo minimum

Credit Card AMonth 14 — Oct 2027

$2500 balance · 19.99% APR · $75/mo minimum

Car LoanMonth 26 — Oct 2028

$8000 balance · 5.9% APR · $200/mo minimum

Student LoanMonth 48 — Aug 2030

$15000 balance · 6.8% APR · $150/mo minimum

About Debt Snowball Calculator

The debt snowball method, popularised by Dave Ramsey, pays off your smallest balance first regardless of interest rate. Each cleared debt delivers a quick psychological win that keeps you motivated. The avalanche method instead targets the highest-interest debt first, reducing the total interest you pay. This calculator simulates both strategies month by month — applying your minimum payments across all debts plus any extra payment you choose — so you can see exactly when each debt disappears, how much interest each approach costs, and the date you become completely debt-free.

Built and maintained by Meet Shah · Last updated 1 August 2026

What this tool is used for

Seeing how long clearing several balances takes when the smallest is targeted first.
Comparing the motivational ordering against paying the highest rate first on total interest.
Working out how much sooner an extra fixed amount each month clears everything.
Producing a payoff order to follow rather than deciding each month.
Understanding how each cleared balance frees up its payment for the next.

Frequently Asked Questions

What is the snowball method?: Paying minimums on everything and directing every spare pound at the SMALLEST balance, then rolling its freed payment into the next. The accounts close in ascending size order, which produces visible wins early.
How does it differ from the avalanche?: Avalanche targets the highest interest RATE instead, which always pays less total interest. Snowball trades that for motivation — and the research on adherence is why it persists despite being mathematically suboptimal.
How much does choosing snowball cost?: Usually less than people assume, and it depends entirely on the spread of rates and balances. Running both against your own numbers is the only way to know — where the difference is small, the method you will actually finish is the better one.
Where does the snowball come from?: The freed minimum payments. When an account closes its minimum does not disappear — it joins the pool attacking the next target, so the amount grows with every payoff even though nothing is added to the budget.
Should I save or pay off debt first?: A small starter buffer first, then the debt, then complete the savings. Without any buffer the next unexpected expense goes back on the card, which is the loop that prevents the payoff from ever finishing.

Common errors and gotchas

Ignoring interest rates entirely. Smallest-first is chosen for momentum and usually costs more than highest-rate-first.
Assuming rates stay fixed, when promotional periods and variable rates change the plan.
Forgetting minimum payments on the other balances while attacking one.
Adding new debt during the plan, which resets the arithmetic silently.
Treating the projected date as certain when income or rates move.