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Debt Avalanche Calculator

Pay off debts highest interest rate first

Debt Avalanche Calculator

The debt avalanche method targets the highest-interest debt first to minimise total interest paid. Mathematically, it is the optimal strategy — it always results in the least total interest and the fastest time to debt freedom compared to any other fixed-payment strategy.

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Tip: If the interest rate difference between your highest and lowest debts is small (say, 0–2%), the difference between snowball and avalanche in total interest paid is also small. Choose whichever keeps you most motivated.

  1. 1List all debts from highest interest rate to lowest
  2. 2Pay minimum payments on all debts each month
  3. 3Put all extra money toward the highest-rate debt
  4. 4When cleared, roll its full payment to the next highest-rate debt
  5. 5The "avalanche" of freed payments accelerates repayment
39.9% overdraft + 21.9% credit card + 9.9% loan, +£100 extra=Target overdraft first despite it being smallerEliminates most expensive debt per pound paid
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