Debt Snowball vs Avalanche Calculator
Use this debt snowball vs avalanche calculator to compare payoff order across multiple balances. See which strategy pays off debt faster, which saves more interest, and when the first debt gets paid off.
Your numbers
Example loaded: two cards and one loan with $150 extra per month. Replace the example numbers to calculate your own estimate.
Enter each debt, its APR, minimum payment, and any extra monthly amount to compare the snowball and avalanche payoff order.
Current debts
How this calculator works
This calculator compares two payoff orders across multiple debts. Snowball prioritizes the smallest balance first, while avalanche prioritizes the highest APR first.
The model applies monthly interest to each debt, pays required minimums, directs extra payment according to the selected strategy, and compares payoff time, total interest, first payoff, and repayment order.
Results
Snowball vs Avalanche tradeoff
See whether the comparison is mainly about interest cost, total payoff time, or a bigger payment/rate issue.
Payoff timeline
Shows when each method is projected to finish, using the same monthly budget.
Snowball
Avalanche
- Interest accrues monthly using APR ÷ 12.
- Minimum payments are treated as fixed dollar amounts (not percent-of-balance rules).
- Your monthly budget stays constant: all minimums + extra monthly payment.
- When a debt is paid off, its minimum payment is rolled into the remaining debts automatically.
- Snowball: extra targets the smallest remaining balance first (ties break by higher APR).
- Avalanche: extra targets the highest APR first (ties break by smaller balance).
- No fees, promo APRs, penalty APR changes, late fees, or lender-specific minimum formulas are modeled.
How to interpret the comparison
Avalanche usually reduces interest by targeting the highest APR first, while snowball can create an earlier win by targeting the smallest balance first. Compare the interest savings, payoff time, and first-payoff timing in your results to decide whether one advantage is large enough to guide your choice.
Favor avalanche
Give avalanche more weight when it saves a meaningful amount of interest or time and you don't need an earlier payoff to stay consistent.
Favor snowball
Give snowball more weight when it clears the first balance much sooner and the added interest or payoff time is a tradeoff you're comfortable accepting.
When they're effectively tied
If the cost and payoff-time gaps are small, choose the order you're more likely to follow consistently.
What to do when both strategies still look too slow
Sometimes the comparison shows a winner, but neither option changes the bigger problem enough. When both payoff plans still look heavy, the issue may not be the order of attack alone.
Test a larger monthly payment
If both strategies are slow, the payoff order may matter less than the total amount going toward debt each month.
Look at the interest burden directly
If the rates are doing most of the damage, estimating current interest cost can make it clearer why progress still feels limited.
Compare a lower-rate path
If the balances are still moving too slowly under either method, lowering the rate may change the picture more than switching payoff order.
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- Credit Card Interest Calculator Estimate monthly, yearly, and total interest costs.
- Extra Payment Calculator See how additional payments change time and interest.
- Cost of Delay Calculator Compare starting repayment now with waiting longer.
- Balance Transfer Savings Calculator Compare transfer fees, promotional APR, and savings.
- Debt Payoff Goal Calculator Find the payment needed to reach a target payoff date.
- Debt Consolidation Comparison Calculator Compare current debts with a consolidation loan.
Learn more about debt payoff strategies
These guides explain how different debt payoff strategies work, how interest affects repayment speed, and how to choose the approach that best fits your financial situation.