Debt Payoff Calculator
See how fast you can be debt-free and what it will cost
Add your debts to compare minimum payments with a plan you choose, estimate the payoff time and total interest for each, and weigh it all against a debt-consolidation loan. Interest is applied monthly to the remaining balance, so the numbers reflect real amortization, not a rough divide-by-payment estimate.
Your debts
Add a debt above to see your payoff timeline, interest totals, and a consolidation comparison.
Understanding debt payoff
How debt interest is calculated
Interest is charged each month on the balance you still owe. Part of your payment covers that interest and the rest reduces the balance, so a smaller balance means less interest next month. This calculator applies interest monthly to the remaining balance rather than dividing the balance by your payment.
Why minimum payments cost so much
Minimum payments are set low, so most of the payment goes to interest and only a little reduces the balance. On high-rate debt that can stretch the payoff over many years and cost more in interest than you originally borrowed.
Why paying more helps
Every extra dollar goes straight to principal, shrinking the balance and cutting the interest charged for the rest of the loan. Small increases in the monthly payment can save years and a large amount of interest.
How consolidation works, and its trade-offs
A consolidation loan replaces several debts with one loan at a single rate and term. It can lower your interest if the new rate is lower, but a longer term or origination fees can make the total cost higher even when the monthly payment drops. A lower monthly payment is not the same as a lower total cost — always compare total interest and total cost, and watch for temporary introductory rates and fees.
Estimates only. Real lender calculations may differ, and interest rates and minimum payments can change over time. This is an educational tool, not financial advice. Review the complete terms of any consolidation offer before accepting it.
Frequently asked questions
How is debt interest calculated?
On most debts interest is charged monthly on your remaining balance. Each month a portion of your payment covers that interest and the rest reduces the balance. Because interest is charged on what you still owe, paying down the balance faster lowers the interest you are charged in every following month.
Why do minimum payments take so long to pay off a debt?
A minimum payment is set low — often just a little above the monthly interest — so most of it goes to interest and only a small amount reduces the balance. On a high-rate credit card, minimum payments can stretch a payoff over a decade or more and cost more in interest than the original balance.
How much does paying more each month save?
Every extra dollar goes straight to principal, which shrinks the balance and reduces interest for the rest of the loan. Even a modest increase in the monthly payment can cut years off the payoff and save a large amount of interest. Use the planned-payment column to see the difference for each debt.
How does debt consolidation work?
A consolidation loan pays off several debts and replaces them with one new loan at a single rate and term. It can simplify payments and, if the new rate is lower, reduce interest. But a longer term or origination fees can make the total cost higher even when the monthly payment is lower.
Does a lower monthly payment mean I pay less overall?
No. A lower monthly payment usually means a longer repayment period, and a longer period means more months of interest. The monthly amount and the total cost are two different things — always compare the total interest and total cost, not just the payment.
What should I watch for in a consolidation offer?
Check the interest rate (and whether it is a temporary introductory rate that jumps later), the full term, and any origination or balance-transfer fees. Add the fees to the interest to see the true cost of borrowing, and read the complete terms before accepting.
Estimates only. Interest is applied monthly to the remaining balance. Actual lender terms, rounding, and fees may differ. Not financial advice.