Calculator Panel
Calculation Ready
Enter your values above and click Calculate.
What This Calculator Does
This calculator ranks your debts by interest rate and structures an optimized payoff plan that mathematically minimizes your total interest expense and overall payoff duration.
How to Use This Calculator
Enter up to 3 debts with their balances, interest rates, and minimum payments, plus your extra monthly budget, then click Calculate.
How the Calculation Works
The underlying math engine processes your inputs using exact formulas. This systematic approach ensures professional, institutional-grade calculation precision:
Mathematical Formula
Formula Legend:
- · Debts are ranked from highest interest rate (APR) to lowest.
- · Minimum payments are paid on all debts, while all extra cash is concentrated on the highest-rate debt.
Practical Example
Suppose you have two debts: Debt A ($3,000 balance, $90 min, 22% APR) and Debt B ($10,000 balance, $200 min, 6% APR). You have an extra $300 monthly budget:
Step-by-Step Mathematical Walkthrough:
- 1 Rank debts by APR: Debt A (22%) is first, Debt B (6%) is second.
- 2 Pay minimum on Debt B ($200). Put $90 + $300 = $390 on Debt A.
- 3 Debt A is wiped out first, saving you maximum interest. Once paid, the full $390 is added to Debt B's minimum payment for a total of $590 monthly.
Important Assumptions & Notes
- Minimum payments are paid on all debts to avoid delinquency fees.
- The extra payment budget is consistently applied every month without exception.
Common Mistakes or Considerations
- Becoming discouraged because the highest-interest debt is also your largest balance, meaning it takes a long time to experience the first complete payoff.
Frequently Asked Questions
What is the Debt Avalanche method?
A debt reduction strategy where you list your debts in order of highest interest rate to lowest. You pay the minimums on all other accounts and put all extra cash toward the highest-interest debt first.
Why is the Debt Avalanche mathematically superior?
By targeting the highest interest rate first, you stop the most expensive compound interest accumulation, which guarantees you will pay the absolute least amount of total interest.
What is the primary drawback of the Debt Avalanche?
If your highest-interest debt has a very large balance, it may take many months or years to pay off your first account, which can cause a loss of motivation.
Can I combine the Snowball and Avalanche methods?
Yes. You can pay off one or two tiny 'quick win' balances first to build momentum, then pivot to the Avalanche method to save on interest.