When you have multiple debts, deciding which to pay off first matters. The two most widely discussed approaches are the debt snowball and the debt avalanche. Both work — but they suit different people and situations.
The debt snowball method
With the snowball method, you focus all extra payments on the debt with the smallest balance first, while making minimum payments on all others. When the smallest debt is paid off, you add that payment to the next smallest. The total you pay each month stays the same, but it shifts towards the next target.
The snowball works on psychology: seeing a debt fully cleared motivates you to keep going. Research suggests this approach leads to better follow-through for many people, even though it is not mathematically optimal.
The debt avalanche method
With the avalanche, you focus extra payments on the debt with the highest interest rate first, regardless of balance. This is mathematically optimal: you pay less in total interest over time compared to the snowball.
The avalanche requires patience. If your highest-rate debt also has a large balance, it may take months or years before you see it cleared. This can feel discouraging — but the financial outcome is better.
Which should you choose?
- If you are motivated by quick wins and find it hard to stay on track, try the snowball
- If you want to minimize total interest paid and can stay motivated through a longer process, use the avalanche
- If one of your debts is causing anxiety or stress — like a payday loan — clearing it first regardless of method can be worth it for your mental health
- If your interest rates are similar across debts, the snowball and avalanche will produce similar results
What both methods have in common
Both approaches only work with a fixed extra monthly repayment above the minimums. You need a budget that creates this surplus. If you do not currently have spare money to put towards debt, addressing that comes first.
General guidance only — not regulated financial advice.
A full worked example: three debts, two methods
Debts: Credit card A — $1,200 balance at 24.9% APR, minimum payment $30. Credit card B — $3,500 balance at 19.9% APR, minimum payment $70. Personal loan — $6,000 balance at 8.9% APR, minimum payment $130. Total minimum payments: $230 per month. You can afford $100 extra per month on top of minimums.
Snowball: direct the extra $100 to Credit card A (smallest balance). Pay $130/month on A. Card A cleared in around 9 months. Then roll $130 to Card B — now paying $200/month on B. Card B cleared in around 19 months from start. Then roll $200 to the loan. Loan cleared around month 35. Total interest paid: higher than the avalanche, but the early wins are more motivating.
Avalanche: direct the extra $100 to Credit card A (highest rate at 24.9%). Same outcome initially — Card A is cleared first because it is also the smallest. Then Card B (second highest rate at 19.9%). Then the loan. In this case the two methods produce a similar result because the highest-rate debt is also the smallest balance. The divergence between methods is greatest when the highest-rate debt has a large balance.
The most important thing: pay more than the minimum
The choice between snowball and avalanche matters far less than the underlying commitment: paying meaningfully more than minimum payments every month. On a $3,500 credit card at 19.9% APR, minimum payments might take over 20 years to clear and cost thousands in interest. The same debt cleared at $200/month would be gone in about 20 months. Your credit card statement is required to show a minimum payment warning box illustrating exactly this — it is worth reading.