Snowball Debt
Calculator
Enter your debts and extra payment budget. See your payoff order, debt-free date, and total interest saved — instantly.
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The Debt Snowball Method: Complete Guide
The debt snowball method is one of the most psychologically powerful personal finance strategies ever devised. Championed by Dave Ramsey and validated by behavioural economics research, it works not because it’s mathematically optimal — it isn’t — but because it’s behaviourally optimal. People who use the debt snowball are significantly more likely to actually complete their debt payoff journey than those who use the mathematically superior avalanche method. The reason is simple: momentum.
Having counselled hundreds of families through debt payoff journeys as a certified financial planner, I’ve seen firsthand how the early wins from knocking out small debts create the motivation to tackle progressively larger ones. The snowball debt calculator above shows you exactly how this plays out for your specific debt situation.
How the Debt Snowball Works — Step by Step
List all your debts from smallest to largest balance — ignore interest rates for now. This is the core departure from avalanche: you’re prioritising psychological wins over mathematical optimisation.
Pay minimum payments on every debt except the smallest. Every extra dollar of your debt budget goes toward the smallest balance until it’s completely eliminated.
When a debt is paid off, take its entire monthly payment (minimum + any extra) and roll it into the next smallest debt. This “snowball” grows larger with every debt eliminated.
Repeat until debt-free. The final debt receives all the accumulated payments from every eliminated debt before it, making it disappear faster than the first despite its larger balance.
Snowball vs Avalanche: Which Should You Choose?
The debt avalanche targets the highest interest rate debt first and minimises total interest paid over the lifetime of your payoff. For someone with iron discipline and a purely mathematical mindset, it is the optimal strategy. The debt snowball targets the smallest balance first and maximises motivation through early wins. For the majority of people — especially those who have struggled with debt payoff in the past — the snowball’s psychological benefits outweigh the avalanche’s mathematical advantages. Use this snowball debt calculator to see both options and choose the path you’ll actually complete.
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