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Debt Snowball Calculator

Compare snowball vs avalanche and find your debt-free date

Choose Your Strategy

Your Debts

$
%
$
$
%
$
$

Amount above minimums you can put toward debt each month

Debt-Free Date

Aug 2029

40 months

Total Interest Paid

$2,697

Total Debt

$17,000

Payoff Order (snowball)

1Credit Card

Jan 2028

21 months - $1,143 interest

2Car Loan

Aug 2029

40 months - $1,554 interest

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Snowball vs Avalanche: Which Strategy Is Right for You?

The debt snowball and debt avalanche are the two most well-known debt payoff strategies. Both work. The difference is in psychology versus pure math.

The Debt Snowball

Popularized by Dave Ramsey, the snowball method has you list your debts from smallest to largest balance. You attack the smallest one with every extra dollar you can find, while paying minimums on everything else. When the smallest is gone, you roll that entire payment into the next one.

The logic is behavioral: paying off a debt completely gives you a psychological win that keeps you motivated. Research backs this up. People who see tangible progress are more likely to continue.

The Debt Avalanche

The avalanche method ignores balance size entirely and targets your highest interest rate first. Mathematically, this is optimal. You are paying down the debt that is costing you the most per dollar, which minimizes total interest paid.

The catch: your highest-interest debt might also have a large balance, meaning it could take a long time before you see a debt fully cleared. That wait can erode motivation.

The Extra Payment Is Everything

Regardless of strategy, the variable that matters most is how much extra you can put toward debt each month beyond the minimums. Even $50-100/month extra compounds dramatically over a multi-year payoff period. Cut one subscription, redirect it to debt, and watch the payoff date move forward significantly.

Frequently Asked Questions

What is the debt snowball method?

The debt snowball method means paying off your smallest balance first while making minimums on everything else. Once the smallest is gone, you roll its payment into the next smallest. The quick wins help maintain motivation.

What is the debt avalanche method?

The debt avalanche method targets your highest interest rate debt first. This saves the most money mathematically, since high-interest debt costs you the most per dollar owed.

Which method is better?

It depends on your personality. If you need early wins to stay motivated, snowball is better. If you want to pay the absolute minimum in interest and can stay disciplined, avalanche wins. The best method is whichever one you will actually stick to.

How does extra payment help?

Extra payment is the most powerful lever in debt payoff. Even an extra $100-200/month can shave years off your timeline and save thousands in interest. Try increasing the extra payment slider to see the impact.

Should I pay off debt or invest?

If your debt carries an interest rate higher than 7-8%, paying it off typically beats investing. If it is lower (like a mortgage at 3-4%), you may come out ahead investing instead. High-interest credit card debt should almost always be paid first.

Does this debt payoff calculator work for UK or Canadian debt?

Yes. The snowball and avalanche strategies are completely currency-agnostic — the math is identical whether you are repaying debt in USD, GBP, CAD, AUD, or any other currency. Enter your debt balances and interest rates in your local currency and the payoff schedule works exactly the same. UK credit card APRs typically run 20–30%; Canadian credit card rates generally sit at 19.99–24.99%. Both are high enough to make aggressive payoff a priority over most other financial goals.

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