What is the debt avalanche method?

Pay minimum payments on all debts, then put extra money toward the highest interest rate debt. Once paid off, apply that payment to the next highest rate. This method minimizes total interest paid and is mathematically optimal.

What is the debt snowball method?

Pay minimum payments on all debts, then put extra money toward the smallest balance regardless of interest rate. Quick wins build motivation. While you may pay more total interest, the psychological benefits help many people succeed.

Should I pay off debt or save for emergencies?

Build a small emergency fund first ($500-$1,000), then focus on high-interest debt. Without emergency savings, unexpected expenses go back on credit cards. Once debt-free, build a full 3-6 month emergency fund.

Is it better to pay off debt or invest?

Pay off high-interest debt (above 6-8%) before investing beyond employer 401k match. Credit card debt at 20% is a guaranteed negative return - paying it off is like earning 20%. For low-rate debt, investing may make more sense.

How much should I pay toward debt each month?

Aim to pay more than minimums - at least double if possible. Minimum payments keep you in debt for decades. Use our calculator to see how extra payments dramatically reduce payoff time and interest costs.

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Debt Payoff Calculator

Plan debt payoff with snowball or avalanche method

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Last verified: February 2026Accuracy tested

Calculated in your browser — we never store your dataIndustry-standard financial formulas

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Sources & Methodology

Formula: Avalanche: Highest interest first; Snowball: Smallest balance first

Debt repayment strategy comparison

Source: Financial planning best practices

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How to Use the Debt Payoff Calculator

See how long it will take to pay off debt and how much interest you'll pay. Compare payoff timelines with and without extra payments to find motivation for accelerated debt repayment.

The Math of Debt

With each payment, a portion goes to interest (calculated on remaining balance) and the rest reduces principal. Higher interest rates mean more of each payment goes to interest rather than reducing your debt.

Extra Payment Impact

Even small extra payments can:

Save thousands in interest over the life of the debt
Cut years off your payoff timeline
Build momentum and motivation for financial goals

Debt Payoff Strategies

Avalanche: Pay highest interest rate first (mathematically optimal)
Snowball: Pay smallest balance first (psychologically motivating)
Consolidation: Combine debts at a lower rate

Frequently Asked Questions

Use our calculator by entering your balance, interest rate, and monthly payment. For example, a $10,000 debt at 18% APR with $250/month payments takes 56 months to pay off, costing $3,923 in interest.