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Debt Snowball Calculator

Estimate your debt payoff timeline using the snowball method — pay off the smallest balance first to build momentum. Enter your total debt, monthly payment, and average interest rate for a simplified payoff estimate.

Total Debt Balance

₫

Total Monthly Payment

₫

Average Annual Interest Rate (%)

Fill in the fields above and click Calculate to see your results.

How to use

How it's calculated

Monthly Interest

total_debt * avg_interest_rate / 100 / 12

Interest accruing each month on the total balance

Monthly Principal Payment

max(0, monthly_payment - monthly_interest)

Amount reducing your actual debt balance each month

Months to Pay Off

round(total_debt / principal_payment)

Estimated months to become debt-free (simplified model)

Total Interest Paid

monthly_interest * months_to_payoff

Estimated total interest paid over the payoff period

Examples

50M debt, 2M/month payment, 12% rate

Total Debt Balance:50,000,000
Total Monthly Payment:2,000,000
Average Annual Interest Rate (%):12

100M debt, 5M/month payment, 15% rate

Total Debt Balance:100,000,000
Total Monthly Payment:5,000,000
Average Annual Interest Rate (%):15

Frequently Asked Questions

What is the debt snowball method?

The debt snowball method prioritizes paying off your smallest debt balance first while making minimum payments on all others. Once the smallest is cleared, you roll that payment into the next smallest. This builds psychological momentum and motivation.

Is snowball better than avalanche?

The avalanche method (highest interest first) saves more money in total interest. The snowball method wins on motivation — clearing small debts quickly gives you early wins. Choose snowball if you need encouragement to stay on track; choose avalanche to minimize total cost.

Why is this a simplified estimate?

This calculator uses your total debt and average rate as a single pool. A true snowball tracks each individual debt separately, rolling payments as each is cleared. Use this for a quick estimate; a spreadsheet or dedicated app gives a more precise schedule.