What is the debt avalanche method?

The debt avalanche method is a debt payoff strategy where you list all your debts from highest interest rate to lowest, then put every spare penny toward the highest-rate debt first. Once it's paid off, you roll that payment into the next-highest-rate debt. This approach minimises the total interest you pay.

Is the avalanche method better than the snowball method?

Mathematically, yes — you'll pay less total interest with the avalanche method. However, the snowball method can be more motivating because you see debts disappear faster. The best method is the one you'll actually stick with.

How does the avalanche calculator work?

Enter your debts (name, balance, APR, and minimum payment), plus any extra monthly payment. The calculator sorts your debts from highest to lowest interest rate, simulates month-by-month payments, and shows your debt-free date, total interest saved, and a comparison with the snowball method.

Do I need to sign up to use this calculator?

No. This calculator is 100% free with no signup required. All calculations happen in your browser — your financial data never leaves your device.

How much can I save with the avalanche method?

It depends on the spread between your interest rates. If you have debts ranging from 5% to 25% APR, the avalanche method can save you thousands compared to paying minimums only. Use the calculator above to see your exact savings.

What if two debts have the same interest rate?

When two debts have the same APR, the calculator uses the smaller balance as the tiebreaker. This way you free up cash flow sooner without sacrificing any interest savings.

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How the Debt Avalanche Method Works

The debt avalanche method is the mathematically optimal way to pay off debt. You list all your debts from highest interest rate to lowest, pay minimums on everything except the highest-rate debt, and throw every spare penny at that one until it's gone.

Once the highest-rate debt is eliminated, you roll its entire payment into the next-highest-rate debt. Because you're always attacking the most expensive debt first, you minimise the total interest you pay over the life of your repayment.

Step-by-Step: Using the Avalanche Method

List all your debts — credit cards, car loans, student loans, medical bills, personal loans.
Sort by interest rate, highest to lowest. Ignore balances.
Pay minimums on every debt except the one with the highest APR.
Put all extra money toward the highest-rate debt.
When it's gone, roll that payment into the next-highest-rate debt.
Repeat until you're debt-free.

Why the Avalanche Method Saves You Money

Interest compounds. A credit card at 24% APR costs you far more per month than a car loan at 5%. By eliminating the highest-rate debt first, you stop the most expensive bleeding as quickly as possible. The result: less total interest paid, and often a faster overall payoff.

The trade-off is patience. If your highest-rate debt also has the largest balance, it may take months before you see your first debt disappear. That's where the snowball method has an edge — it gives you faster psychological wins.

Avalanche vs Snowball: Which Should You Choose?

If you have a wide spread in interest rates (e.g., 5% to 25%), the avalanche method can save you hundreds or thousands in interest. If your rates are all similar, the difference is minimal and you might prefer the snowball method for its motivational benefits.

Not sure? Try the Payoff app — it includes a 60-second strategy quiz that recommends the best method for your personality and debt profile. You can also compare both methods side-by-side with the what-if simulator.

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How the Debt Avalanche Method Works

Step-by-Step: Using the Avalanche Method

Why the Avalanche Method Saves You Money

Avalanche vs Snowball: Which Should You Choose?

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