Debt Payoff Calculator
See how much interest and time you can save by adding extra payments to your credit cards or loans.
Example Debt Payoff Calculation
See how adding $100 extra to a $10,000 credit card balance at 18% interest changes your financial future.
Month 1 Interest
$10,000 × (0.18 / 12) = $150.00
This is the cost of carrying the balance for just one month.
Principal Paydown
Standard ($300): $300 - $150 = $150 principal
Extra ($400): $400 - $150 = $250 principal
By paying $100 more, you are paying down the actual debt 66% faster in month 1.
Frequently Asked Questions
What is the best way to pay off debt faster?
The most effective way is to find extra cash in your budget and apply it directly to the principal. Reducing your spending or increasing your income, even by small amounts, significantly cuts down the total interest paid due to compounding.
Snowball vs. Avalanche?
The Avalanche method focuses on the highest interest rate first, saving you the most money. The Snowball method focuses on the smallest balance first, giving you quick psychological wins. Both work—the best one is the one you can stick to.
How do extra payments reduce interest?
Interest is calculated based on your remaining balance. When you make an extra payment, you reduce that balance immediately. Since the balance is lower next month, the bank charges you less interest, and more of your regular payment goes toward the principal.
Should I focus on highest interest first?
Mathematically, yes. Paying off a 24% credit card before a 6% car loan will save you much more in interest. This is the core principle of the Debt Avalanche method.
Invest or pay off debt?
Compare the interest rate of your debt to the expected return of an investment. If your debt is 18% and the market returns 8%, you are essentially "guaranteeing" an 18% return by paying off the debt first.
Does this include fees?
No, this calculator focuses on principal and interest. It does not account for late fees, annual card fees, or balance transfer fees. Always check your specific loan terms for potential prepayment penalties (though rare for credit cards).
Disclaimer: This calculator provides estimates for informational purposes only. Actual interest charges and payoff dates depend on your specific lender's calculation methods and daily balance fluctuates. Consult a qualified professional before making major financial changes.