How to use this debt payoff calculator
- Enter your current balance — the total amount you owe on the debt
- Enter the annual interest rate (APR) — find this on your credit card statement or loan agreement
- Enter your planned monthly payment — this should be at least the minimum payment on your statement
- Optionally add an extra monthly payment to see how much time and interest it saves
- Click Calculate Payoff to see your debt-free date and total cost
Debt avalanche vs debt snowball
If you have multiple debts, choosing the right payoff strategy makes a real difference. The two main approaches are:
- Debt Avalanche — Pay off the highest interest rate debt first. Minimizes total interest paid. Best mathematically.
- Debt Snowball — Pay off the smallest balance first. Creates quick wins and momentum. Best psychologically for some people.
Research suggests that for people who struggle with motivation, the snowball method leads to higher actual debt elimination rates — even though the avalanche is cheaper on paper. The best method is the one you'll stick to.
The real cost of minimum payments
Credit card companies set minimum payments deliberately low — typically 1-3% of the balance. Paying only the minimum on a $5,000 card at 20% APR can take over 20 years and cost more than $6,000 in interest alone. Doubling your minimum payment can cut that timeline to 3-4 years and save thousands.
Should you pay off debt or invest?
The general rule: compare your debt interest rate to the expected return from investing. If your credit card charges 20% APR and the stock market historically returns ~7-10%, paying down the card is a guaranteed 20% return — much better than uncertain investment returns. However, if your debt is a low-interest mortgage at 4%, it may make more sense to invest simultaneously, especially if your employer offers 401k matching.
Frequently asked questions
What is the debt avalanche method?
The debt avalanche method prioritizes paying off debts with the highest interest rate first, while making minimum payments on all others. This minimizes the total interest paid over time and is mathematically the most efficient strategy.
What is the debt snowball method?
The debt snowball method prioritizes paying off the smallest debt balance first, regardless of interest rate. Once the smallest is paid off, you roll that payment into the next smallest. It's psychologically motivating because you see debts disappear faster.
Which debt payoff method is better — avalanche or snowball?
The avalanche method saves more money in total interest paid. The snowball method can be better if motivation is a challenge, since eliminating small debts quickly creates momentum. Mathematically, avalanche wins; psychologically, snowball often gets better results for many people.
How much extra should I pay each month to get out of debt faster?
Even a small extra payment makes a significant difference. An extra $50-$100 per month on a credit card balance can cut years off your payoff timeline and save thousands in interest. Use this calculator to see exactly how much time and money each extra payment saves.
Should I pay off debt or invest?
A common rule: if your debt interest rate is higher than the return you'd expect from investing (roughly 7% for a diversified index fund), pay off the debt first. High-interest credit card debt (18-25%) should almost always be paid before investing, since the interest you save is guaranteed while investment returns are not.