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Debt Avalanche Calculator Guide
The debt avalanche method pays off your highest-interest debt first, which saves the most money in interest and usually clears your debt fastest. Enter your debts and an extra monthly payment to see your payoff timeline.
Pay every minimum, then put all extra money toward the highest-APR debt. When it's gone, roll its payment into the next-highest rate, and so on.
Avalanche vs Snowball
The avalanche targets the highest interest rate first and minimizes total interest. The debt snowball instead targets the smallest balance first for quicker motivating wins. The avalanche is cheaper; the snowball is often easier to stick with.
Why the Avalanche Saves Money
Interest is charged as a percentage of your balance, so a high-APR debt grows fastest. Killing that debt first stops the most expensive interest as early as possible, which is why the avalanche method usually results in the lowest total interest and the shortest payoff time.
The Most Important Factor
Whichever order you choose, paying more than the minimum is what really shortens the timeline. Even a small extra amount each month dramatically cuts total interest because more of every payment goes to principal.
These results are estimates for education and planning, not financial advice. Actual returns, rates, and terms vary — check with a qualified professional before making decisions.
Related: Debt Snowball Calculator, Credit Card Payoff, and Loan Payment Calculator.
Frequently Asked Questions
What is the debt avalanche method?
You pay minimums on all debts and put every extra dollar toward the debt with the highest interest rate, then roll that payment to the next-highest rate once it's paid off.
Is the avalanche faster than the snowball?
Yes, the avalanche method is mathematically faster and cheaper because it eliminates your most expensive interest first, though the snowball can be more motivating.
Does the avalanche always save money?
It minimizes total interest whenever debts have different rates. The bigger your rate differences, the more you save compared with the snowball.
What if my minimum payments are too low?
If minimum payments don't cover the interest, balances grow and the debt can't be paid off — you'll need to increase your payments to make progress.
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