Debt Avalanche Calculator

Formula

Target the highest interest rate first

Worked example

18%, 9%, 24% — 24%

Quick answer

What does the Debt Avalanche Calculator do?

Identify the first debt to target under the debt-avalanche method using comma-separated APR values.

What is the Debt Avalanche Calculator?

Identify the first debt to target under the debt-avalanche method using comma-separated APR values. Use it when you have the required inputs and want a deterministic, repeatable result with the calculation method visible.

How to use this calculator

Enter the values requested by the tool, keep units and time periods consistent, resolve any validation message, calculate, then review the primary answer together with the displayed formula and supporting values.

Formula and method

This calculator uses the deterministic formula Target the highest interest rate first. Enter the required values, then review the displayed substitution and result breakdown to verify the calculation.

Worked example

18%, 9%, 24% 24%

Common mistakes to avoid

Check units, decimal points, percentages, signs, date/time order, selector choices, and rounding. For important decisions, verify the result against an independent source or qualified professional when appropriate.