How to Use This Debt Payoff Calculator
Enter your current debt balance, the annual interest rate (APR), and your planned monthly payment. The calculator instantly shows when you'll be debt-free, how much total interest you'll pay, and how extra payments accelerate your payoff timeline.
Debt Snowball vs Debt Avalanche
If you have multiple debts, two popular strategies exist. The Debt Avalanche method pays off the highest-interest debt first, minimizing total interest paid. The Debt Snowball method pays off the smallest balance first, providing psychological wins that keep you motivated. Mathematically, Avalanche saves more money, but studies show Snowball has higher completion rates because the early wins build momentum.
The Power of Extra Payments
Extra payments go entirely to principal (not interest), creating a compounding effect in reverse. Even an extra $50/month on a $15,000 credit card balance at 22.9% APR can save thousands in interest and years off the payoff timeline. The scenario comparison above shows exactly how much each level of extra payment saves.
Frequently Asked Questions
Should I save or pay off debt first?▾
The general rule: maintain a small emergency fund ($1,000-$2,000), then aggressively pay off high-interest debt (above 7-8%), then build a full emergency fund, then invest. If your debt interest rate is below your expected investment return (e.g., a 4% auto loan vs 10% market returns), investing may be more optimal mathematically, though being debt-free has significant psychological benefits.
Can I negotiate a lower interest rate?▾
Yes. Call your credit card company and ask for a rate reduction. If you have a good payment history, success rates are around 50-70%. You can also explore balance transfer cards with 0% intro APR (typically 12-21 months), which can save thousands in interest if you pay off the balance during the promotional period.
Calclypso Editorial Team
Reviewed by certified financial professionals. Last updated: April 2026.