Debt Payoff Calculator

Debt payoff calculators show you the most powerful truth about consumer debt: the minimum payment is a trap. Credit card companies set minimum payments at 1–2% of your balance specifically to maximize the interest you pay over time. On a $5,000 balance at 20% APR with a 2% minimum payment, it can take over 30 years and cost more than $7,000 in interest to pay off — more than the original debt.

The debt amortization formula reveals something else important: every extra dollar you pay beyond the minimum reduces your principal, which reduces future interest charges, which means even more of your next payment goes to principal. It's a compounding effect that works in your favor when you pay more than the minimum.

The two main debt payoff strategies — Avalanche and Snowball — produce very different psychological experiences but similar mathematical outcomes over time.

Debt Avalanche: Pay minimums on all debts, put every extra dollar toward the highest-interest-rate debt. This method minimizes total interest paid and is mathematically optimal. It works best for people who are motivated by efficiency and can stay disciplined even when early progress feels slow.

Debt Snowball: Pay minimums on all debts, put every extra dollar toward the lowest balance. Once a debt is paid off, roll its minimum payment into the next. This creates quick wins and maintains motivation. Research by the Harvard Business Review found that people using the snowball method were more likely to pay off all their debt, even though they paid slightly more in interest.

Balance transfers: A 0% APR promotional credit card (typically 12–21 months) can eliminate interest entirely during the promotional period. The transfer fee (usually 3%) is almost always worth it if you have high-interest debt and can pay it off during the promo period.