Budgeting · Updated 2026-10-19

Debt snowball method: how it works, with a worked example

The debt snowball is a simple way to pay off several debts: you list them from the smallest balance to the largest, pay the minimum on all of them, and put every spare euro, pound or dollar on the smallest one. When that debt is gone, its payment "rolls" onto the next one, so the amount you're throwing at each debt keeps growing, like a snowball.

This guide explains the steps, runs a full worked example (and compares it honestly with the debt avalanche method), and covers the mistakes that make people give up. It also shows how to keep it on paper so you can actually see the progress.

This is general budgeting information, not financial advice. All debts and amounts below are made-up examples for illustration. If you're behind on payments, being chased by collectors, or can't cover essentials, contact a free debt advice service first (some are listed at the end).

How the debt snowball works, step by step

1. List every debt. Credit cards, store cards, buy-now-pay-later, overdrafts, personal loans, car finance, money owed to family. Write the balance, interest rate and minimum payment for each.
2. Sort them from smallest balance to largest. Ignore the interest rate for the order (that's the key difference from the avalanche method).
3. Keep paying the minimum on every debt. Missing minimums usually means fees, extra interest and damage to your credit record, which undoes the whole plan.
4. Find a fixed extra amount each month, even a small one, and put all of it on the smallest debt.
5. When the smallest debt is paid off, roll its payment onto the next one. The next debt now gets its own minimum plus everything you were paying on the first. Repeat until the list is empty.
6. Keep your total monthly payment the same. The snowball only works if the money freed up from a paid-off debt goes to the next debt, not back into everyday spending.

1. List every debt, smallest balance first.
2. Pay minimums on all of them.
3. Put every extra towards the smallest.
4. Roll it over when one is paid off.

A worked example

Example only. Figures in euros for readability; the maths is the same in any currency. Interest is calculated monthly (annual rate ÷ 12) on the remaining balance, minimum payments stay fixed, and no new spending is added to the cards.

Snowball order: store card → credit card → personal loan

• Months 1-3: the store card gets €25 + €200 = €225 a month. It's paid off in month 3.
• Months 4-12: the credit card now gets its €60 plus the €225 that's been freed up, so €285 a month. It's paid off in month 12.
• Months 13-21: the personal loan gets the full €405 a month. It's paid off in month 21.

Result: debt-free in 21 months, with about €839 in interest paid along the way.

Compare that with paying only the minimums (€205 a month, fixed): in the same simulation it takes about 73 months (just over six years) and costs about €2,887 in interest. The extra €200 a month and the rolling payments are what make the difference, whichever order you choose.

Debt snowball vs debt avalanche

The debt avalanche uses exactly the same steps, but sorts debts by interest rate, highest first, instead of by balance. Running the same example in avalanche order (credit card at 22% first, then the store card, then the loan):

So in this example the avalanche saves about €32 in interest and finishes in the same month, but you wait eleven months for your first win instead of three. That's the honest trade-off:

• The avalanche is always cheaper or equal in pure maths, because the most expensive debt shrinks fastest. The gap gets bigger when a large balance carries a much higher rate than the small ones.
• The snowball gives you early, visible wins. Seeing a whole account closed in a few months is motivating, and motivation matters when a plan runs for years.

That second point isn't only a pep talk. A study of nearly 6,000 clients of a debt settlement firm by Gal and McShane (Journal of Marketing Research, 2012) found that closing individual debt accounts predicted whether people eventually got out of debt, regardless of the balance of the accounts they closed.^[1] The authors still note that paying the highest rate first is the rational choice on paper; their point is that staying motivated is a real factor too.^[2]

A simple way to choose: if your interest rates are fairly similar, or you've tried and stalled before, the snowball is a sensible pick. If one large debt has a much higher rate than the rest, run both orders on paper and see how big the difference really is. Some people do a hybrid: clear one or two tiny balances first for momentum, then switch to highest rate first.

How to find the extra amount

• Give every euro a job first. A written monthly budget (income minus bills, essentials and savings) shows what's genuinely spare. Our cash envelope guide walks through this.
• Set up sinking funds for predictable costs like car repairs, annual insurance and birthdays. Otherwise those bills land on a credit card and quietly undo your progress. See 40 sinking fund examples.
• Keep a small emergency buffer. Many people keep a modest cash cushion before attacking debt hard, so a surprise expense doesn't mean new borrowing.
• Try a no-spend week or month and send what you didn't spend straight to the smallest debt.
• Use windfalls on purpose: part of a tax refund, a bonus or money from selling things you don't use.

Common mistakes

• Letting the freed-up payment disappear. When a debt is paid off, the payment must move to the next debt. If it drifts into everyday spending, the snowball stops growing.
• Still using the cards. Paying down a card while adding new purchases to it is running on a treadmill. Many people remove saved card details from shopping sites while they work through the list.
• Skipping minimums on the bigger debts to throw more at the small one. Late fees and penalty interest cost more than the snowball saves.
• Ignoring a very high rate. If a large debt has a far higher rate than everything else, check the avalanche numbers before committing.
• No buffer. One unexpected bill without savings means new debt and lost motivation.
• Not tracking. If you can't see the balances going down, it's easy to feel stuck even when you're making progress.

Tracking it on paper

A debt snowball is easiest to stick with when you can see it. Two simple pages do most of the work:

• A debt list with columns for the debt, balance, interest rate, minimum payment and the date it's paid off, sorted smallest to largest, plus a payment log (date, debt, payment, new balance) underneath.
• A payoff tracker for each debt: 100 circles where each circle is 1% paid off. On a €600 debt, each circle is €6; on €2,400, each circle is €24. Colouring circles in is a small thing that makes progress feel real.

Update the balances once a month from your statements, write the date when a debt is cleared, and move straight on to the next line.

Prefer to see a page filled in first? The free Cash Envelope Tracker example shows the same printable style used for the debt pages.

Free debt help

If debt is affecting essentials like rent, energy or food, talk to a free, independent service before choosing any method:

• Netherlands: Geldfit (free online test and referral), and your municipality (gemeente) offers free debt help (schuldhulpverlening).
• UK: StepChange, a free debt charity.
• US: the National Foundation for Credit Counseling (nonprofit credit counselling) and the Consumer Financial Protection Bureau.

Sources

1. Gal, D. & McShane, B. B. (2012). "Can Small Victories Help Win the War? Evidence from Consumer Debt Management." Journal of Marketing Research, 49(4), 487-501. doi.org/10.1509/jmr.11.0272
2. Kellogg Insight, "To Beat Debt, Consider Starting Small": insight.kellogg.northwestern.edu

Worked-example figures come from a simple month-by-month calculation (monthly interest at the annual rate ÷ 12, fixed minimums, no new spending). Real loans and cards calculate interest in slightly different ways, so your numbers will differ. Related reading: filled-in Cash Envelope Tracker (free) · cash envelope system · zero-based budgeting · sinking funds list · no-spend challenge · 100 envelope challenge · 52-week money challenge · monthly budget review · Cash Budget Bundle on Etsy