What is the debt snowball method?
The debt snowball method is a repayment strategy where you pay the minimum on every debt, then put any extra repayment money towards the smallest balance first.
Debt snowball quick reference
Debt snowball explained in plain English
The debt snowball method is built around momentum. Instead of starting with the highest interest rate, you start with the smallest balance. Once that debt is cleared, you take the payment you were making on it and add it to the next smallest debt.
The reason it is called a snowball is that the payment power grows as each debt is cleared. At the start, you may only have a small extra amount to use. Later, the payments from cleared debts roll together and become a larger repayment amount.
The main benefit is motivation. Seeing one debt disappear can make the whole plan feel more achievable. This can be especially helpful if you have several small balances and feel overwhelmed by the number of accounts.
The trade-off is that snowball does not always save the most interest. If your largest debt also has the highest APR, ignoring it at the start can mean you pay more interest than with a highest-interest-first strategy.
How the debt snowball method works
- List every debt. Include the balance, APR and minimum payment.
- Sort by balance. Put the smallest balance first, regardless of APR.
- Pay minimums on all debts. Keep every account up to date.
- Attack the smallest balance. Put all extra repayment money towards it.
- Roll the payment forward. When the first debt is cleared, add that payment to the next smallest debt.
- Repeat until clear. Keep rolling payments forward until every debt is gone.
Build your snowball order
Use the debt snowball calculator to compare payoff order, debt-free date and total interest.
Simple debt snowball example
Imagine you have three debts and £100 extra per month to put towards repayment.
| Debt | Balance | APR | Minimum payment | Snowball order |
|---|---|---|---|---|
| Store card | £450 | 34.9% | £20 | 1st |
| Overdraft | £900 | 39.9% | £30 | 2nd |
| Credit card | £2,500 | 24.9% | £60 | 3rd |
Snowball starts with the £450 store card because it is the smallest balance. After it is cleared, the £20 minimum plus the extra money can move to the overdraft. When the overdraft is cleared, those payments roll into the credit card.
Debt snowball vs debt avalanche
Snowball is not always the cheapest method mathematically. Its value is behavioural: it helps people stay consistent by making the first win easier to reach.
Compare both methods
Use the snowball calculator to see how the smallest-balance-first method compares with highest-APR-first repayment.
When debt snowball can help
- You have several small debts: clearing them reduces the number of accounts you manage.
- You feel overwhelmed: early wins can make the plan feel possible.
- You have struggled to stick with plans: visible progress may help consistency.
- Balances vary more than APRs: if APRs are similar, the interest trade-off may be smaller.
- You need simplicity: smallest balance first is easy to understand and follow.
Debt snowball risks
The main risk is paying more interest than necessary. If a large high-APR debt is left until later, it can continue building interest while you clear smaller debts.
Another risk is adding new borrowing while paying old debts off. The snowball only works if cleared debts stay cleared and the total balance keeps moving down.
Watch out: if one debt has a much higher APR than the rest, compare snowball with avalanche before deciding.