What is the debt avalanche method?

The avalanche method pays off debts in order of highest interest rate first, while making minimum payments on all others. This method minimizes total interest paid and is mathematically optimal.

What is the debt snowball method?

The snowball method pays off debts in order of smallest balance first. While it costs more in interest than the avalanche, it provides quick wins that keep people motivated. Research by Dave Ramsey popularized this approach.

How much faster will I pay off debt with extra payments?

Paying even $50–$100 extra per month can significantly shorten payoff time. On a $10,000 credit card at 18% with $250/month: minimum payments take about 61 months. An extra $100/month ($350 total) pays it off in 37 months — saving 2 years and $2,000+ in interest.

Should I pay off debt or invest?

Always get your 401(k) employer match first (it's a 50–100% guaranteed return). Then pay off high-interest debt (above 7–8%). Below that rate, the math often favors investing over paying off debt faster, since investments may earn more than the debt costs.

What debts should I pay off first?

By interest rate (avalanche): typically credit cards (15–25%), then personal loans (10–15%), then auto loans (6–9%), then student loans (5–7%), then mortgages (6–7%). By balance (snowball): smallest balance first for psychological momentum.

Debt Payoff Calculator

Find your debt-free date, total interest paid, and how much you save by paying more than the minimum.

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Understanding Debt Payoff Strategies

This debt payoff calculator shows exactly when you'll be debt-free based on your current balance, interest rate, and monthly payment. It also shows how much you can save by paying extra — even a small amount above the minimum makes a dramatic difference with high-interest debt.

The Debt Avalanche Method (Mathematically Optimal)

Pay minimum amounts on all debts, then apply all extra money to the debt with the highest interest rate first. Once that's paid off, roll that payment to the next highest-rate debt. This minimizes total interest paid across all debts. Best for people motivated by saving the most money.

The Debt Snowball Method (Psychologically Effective)

Pay minimum amounts on all debts, then apply extra money to the smallest balance first. Quick wins from paying off small debts build momentum and motivation. Research shows the snowball method leads to higher debt payoff completion rates despite costing slightly more in interest. Popularized by Dave Ramsey.

How Minimum Payments Trap You

On a $10,000 credit card at 18.99% APR, the typical minimum payment is 1% of the balance or $25 (whichever is greater). Paying only minimums: it takes 30+ years and over $13,000 in interest to pay off $10,000. Paying a fixed $300/month: it's paid off in 48 months with about $4,400 in interest — a difference of $8,600+.

Debt Payoff Calculator — FAQs

The avalanche method focuses extra payments on the highest interest rate debt first, regardless of balance size. Once that's paid, you roll the payment to the next highest rate. It saves the most total interest and is mathematically the optimal strategy.

The snowball method pays off the smallest balance first for psychological momentum. You get quick wins from eliminating individual debts, which research shows improves motivation and completion rates. It costs slightly more in interest than the avalanche but works better for many people.

Significantly. On an $8,500 credit card at 18.99% with $300/month: payoff in 42 months with $3,792 interest. Add $100 extra ($400 total): payoff in 30 months with $2,603 — saving $1,189 and 12 months. The higher your interest rate, the more valuable extra payments are.

Always capture your full 401(k) employer match first — it's an instant 50–100% return. Then prioritize paying off debt with rates above 7–8%. Below that threshold, the math may favor investing (since stock market returns have historically exceeded those rates over the long term).

The APR (Annual Percentage Rate) is on your monthly statement, usually in the account summary or interest charge section. For credit cards, it's also listed in your cardmember agreement. Call your lender if you can't find it online.