Debt Avalanche Calculator

Use the debt avalanche method to minimize total interest paid. Target your highest-rate debts first for maximum mathematical savings.

Your Debts (Highest Rate First)

Debt 1
Debt 2
Debt 3
$

Additional money to throw at debt each month

Add your debts and click Calculate

See the avalanche payoff order and compare with snowball

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Pro Tip

If your highest-rate debt is also your largest, consider making one small 'quick win' payment to a small debt first, then switch to avalanche. The motivation boost is worth the small interest difference.

Compare with Snowball Method →

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The Debt Avalanche Method Explained

The debt avalanche is the mathematically optimal strategy for paying off debt. It works by targeting the debt with the highest interest rate first, regardless of balance size. Because high-rate debt accumulates interest fastest, eliminating it first minimizes the total interest you pay over the life of all your debts.

The process is straightforward: make minimum payments on all debts, then direct every extra dollar toward the debt with the highest interest rate. Once that debt is eliminated, apply its freed-up payment to the next highest-rate debt. This cascading effect is where the "avalanche" name comes from.

The avalanche method often saves hundreds or thousands of dollars compared to the snowball method, especially when you have debts with widely varying interest rates. For example, paying off a 26.99% store card before a 5.9% car loan saves significantly more interest than doing the reverse.

The trade-off is that if your highest-rate debt also has a large balance, it may take longer before you experience the motivational boost of your first payoff. Some people combine approaches: starting with one or two small "quick wins" (snowball) then switching to the avalanche method for the remaining debts.

This calculator also shows a comparison with the snowball method so you can see the exact dollar difference. If the savings are significant, the avalanche method is likely worth the delayed gratification.

Avalanche Method Mechanics

Interest Cost Comparison

Interest Saved = Total Interestsnowball − Total Interestavalanche

Where:

Step 1 = List debts from highest interest rate to lowest

Step 2 = Pay minimums on all debts each month

Step 3 = Apply all extra money to the highest-rate debt

Step 4 = When paid off, roll payment to next highest-rate debt

Example

Store Card ($2,500 at 26.99%), Credit Card ($6,000 at 19.99%), Car Loan ($15,000 at 5.9%) with $300 extra/month

  • • Avalanche targets: Store Card (26.99%) -> Credit Card (19.99%) -> Car Loan (5.9%)
  • • Month 1: $60 min + $300 extra = $360/mo toward Store Card
  • • Store Card paid off in ~8 months
  • • Then: $120 min + $60 freed + $300 = $480/mo toward Credit Card
  • • All debt eliminated faster with less total interest than snowball

Frequently Asked Questions

How much money does the avalanche method actually save?
Savings depend on the spread between your interest rates and balances. If you have a 26.99% card and a 5.9% loan, the avalanche can save hundreds to thousands more than the snowball. If all your rates are similar, the difference is minimal.
What if I lose motivation with the avalanche method?
Consider a hybrid approach: pay off one or two small debts first for quick wins, then switch to the avalanche for remaining debts. Or set intermediate milestones (like every $1,000 paid off) to celebrate progress.
Should I refinance high-rate debt instead?
If you can qualify for a lower rate (e.g., consolidation loan at 8% to replace a 25% credit card), refinancing can complement the avalanche method. Just be sure to factor in any fees and avoid accumulating new debt on the freed-up credit cards.
Does the avalanche method work for all types of debt?
Yes, the avalanche method works for any combination of debts: credit cards, personal loans, student loans, medical debt, auto loans. The key principle is always the same: target the highest interest rate first to minimize total interest paid.