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Debt Payoff Calculator — Snowball vs Avalanche

Add your debts below to compare the snowball (smallest balance first) and avalanche (highest interest first) payoff strategies side by side. See exactly when you'll be debt-free and how much interest you'll save.

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Additional amount above your minimum payments each month, applied to the priority debt first.

Side-by-Side Comparison

Snowball Method

Pay smallest balance first for quick wins

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Debt-free date
Time to payoff-
Total interest paid-
Total amount paid-
First debt eliminated-

Avalanche Method

Pay highest interest first to save the most

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Debt-free date
Time to payoff-
Total interest paid-
Total amount paid-
First debt eliminated-
View Full Payoff Schedule (Avalanche)
MonthDebtPaymentInterestPrincipalRemaining
View Full Payoff Schedule (Snowball)
MonthDebtPaymentInterestPrincipalRemaining

Snowball vs Avalanche: Which Debt Payoff Strategy Is Right for You?

The Debt Snowball Method

Popularized by personal finance expert Dave Ramsey, the snowball method orders your debts from smallest balance to largest, regardless of interest rate. You throw every extra dollar at the smallest debt while paying minimums on the rest.

How it works: When the smallest debt is eliminated, you "roll" its entire payment (minimum + extra) into the next smallest debt. Each payoff frees up more money, creating a snowball effect.

Pros:
  • Quick psychological wins keep you motivated
  • Reduces number of bills faster
  • Simpler to follow — no rate comparisons needed
  • Research shows higher completion rates
Cons:
  • May cost more in total interest
  • High-rate debts continue accruing interest longer

The Debt Avalanche Method

The avalanche method is the mathematically optimal approach. You target the debt with the highest interest rate first while making minimum payments on everything else. This minimizes total interest paid over the life of your debts.

How it works: Once the highest-rate debt is gone, you redirect all of its payment toward the next highest-rate debt. The "avalanche" of freed-up cash accelerates each subsequent payoff.

Pros:
  • Saves the most money in interest
  • Mathematically optimal strategy
  • May result in faster total payoff time
  • Best for people motivated by numbers
Cons:
  • First payoff may take longer (less motivation)
  • Requires discipline without early wins

When to Use Which Method

Choose Snowball if: You have many small debts, need motivation from quick wins, or tend to lose steam on long-term financial goals. Studies from Harvard Business Review show that people who pay off accounts faster are more likely to eliminate all their debt.

Choose Avalanche if: You have high-interest credit card debt, are motivated by saving money, or the difference in interest between the two methods is significant (more than a few hundred dollars). If you're disciplined and number-driven, avalanche is your best bet.

Frequently Asked Questions

The debt snowball method, popularized by Dave Ramsey, focuses on paying off your smallest debt first while making minimum payments on everything else. Once the smallest debt is gone, you roll that payment into the next smallest. The psychological wins of eliminating debts quickly help you stay motivated, even though you may pay slightly more in total interest compared to the avalanche method.

The debt avalanche method targets the debt with the highest interest rate first while making minimum payments on the rest. Once the highest-rate debt is eliminated, you move to the next highest. This is mathematically optimal because it minimizes the total interest you pay over the life of your debts, saving you the most money.

The avalanche method saves more money in interest, but the snowball method provides faster psychological wins. If your highest-rate debt also has the largest balance, the snowball method may keep you motivated longer. If your highest-rate debt has a small balance, both methods may be nearly identical. The best method is the one you will actually stick with consistently.

Any extra amount helps, but financial experts recommend directing at least 20% of your after-tax income toward debt repayment (minimum payments plus extra). Even an extra $50-$100 per month can shave months or years off your payoff date and save hundreds or thousands in interest. Use the calculator above to see the exact impact of different extra payment amounts.

This is called negative amortization — your balance actually grows each month because the interest exceeds your payment. This is a dangerous situation common with some student loans and credit cards on minimum payments. You need to increase your payment to at least cover the monthly interest, then add more to start reducing the principal. Our calculator will warn you if any of your debts are in this situation.

Most financial experts recommend having a small emergency fund ($1,000-$2,000) before aggressively paying off debt. This prevents you from going further into debt when unexpected expenses arise. Once your high-interest debt is paid off, you can build a full 3-6 month emergency fund. Dave Ramsey calls this "Baby Step 1" in his debt-free journey.

Yes. The calculator computes monthly interest on your remaining balance each month, which is how most debts (credit cards, student loans, auto loans) actually work. The interest is calculated on the current balance before that month's payment is applied, giving you an accurate projection of your payoff timeline and total interest costs.

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