Debt Payoff Calculator
Calculate exactly how long it will take to pay off your credit card, student loan, or auto loan. See total interest paid based on your monthly payment.
Debt Details
Time to Payoff
0 mo
Total Paid
$0
Total Interest
$0
The Debt Amortization formula
The time required to pay off an amortizing loan is calculated using the following logarithmic formula:
-
nTotal number of months to payoff -
PPrincipal Balance -
MMonthly Payment -
rMonthly interest rate (APR / 12 / 100)
If your monthly payment (M) is less than the monthly interest generated (r × P), the formula will fail because the debt will grow infinitely.
Eliminate Your Debt Faster
High-interest debt, such as credit card balances or expensive personal loans, is a massive anchor on your financial progress. It acts as compound interest working in reverse, draining your income before you even have a chance to save or invest. Our free debt payoff calculator is designed to help you build a concrete plan to become debt-free.
To see how fast you can eliminate your balance, enter your total current debt, the annual interest rate (APR), and the amount you plan to pay toward it each month. The calculator will instantly reveal your exact payoff timeline and exactly how much interest you will pay to the bank over that time period.
The True Cost of Minimum Payments
When credit card companies calculate your “minimum payment,” they deliberately set it as low as possible—often barely covering the interest generated that month. Their goal is to keep you in debt for as long as possible because it maximizes their profits.
If you only pay the minimum balance on a large credit card debt, you will likely be paying it off for a decade or more, and you will often end up paying double or triple the original purchase amount in pure interest. By using this calculator to see the math, you can easily realize how paying just $50 or $100 extra per month can shave years off your repayment timeline and save you thousands of dollars.
Strategies for Debt Elimination
When you have multiple sources of debt, figuring out where to direct your extra cash can be confusing. Personal finance experts generally recommend one of two primary strategies to become debt-free:
1. The Debt Avalanche (Mathematically Optimal)
The avalanche method focuses entirely on the math. You list all your debts from the highest interest rate down to the lowest. You pay the minimum required on every single debt except the one at the very top of the list (the highest APR). You throw every available extra dollar you have at that top debt.
Once it is gone, you take the entire payment you were making on it and roll it into the debt with the next highest rate. This method minimizes the total amount of interest you pay to the banks.
2. The Debt Snowball (Psychologically Optimal)
The snowball method, popularized by Dave Ramsey, focuses on human psychology and motivation. You list your debts from the smallest total balance to the largest, completely ignoring the interest rates. You throw all extra cash at the smallest debt until it is gone.
Because you are tackling the smallest balances first, you experience “quick wins” much faster. This psychological boost is incredibly motivating and helps many people stick to their debt payoff plan when they otherwise might have given up.
Finding Extra Money to Attack Debt
Regardless of which method you choose, the key to eliminating debt is increasing the gap between your income and your expenses, and aggressively applying that gap to your principal.
- Cut Discretionary Spending: Audit your bank statements and temporarily pause subscriptions, dining out, and luxury purchases. Every dollar saved is a dollar you can throw at your debt.
- Increase Your Income: Consider taking on a temporary side hustle, driving for a rideshare app, or selling unused items around your house. Direct 100% of this new income toward your highest-priority debt.
- Negotiate Lower Rates: Call your credit card companies and ask for a lower APR, or look into a 0% introductory balance transfer card to pause interest accumulation while you aggressively pay down the principal.
Once your high-interest debt is eliminated, you will experience a massive increase in your monthly cash flow. You can then redirect those old debt payments toward building true wealth using our savings goal calculator or investing for the future with our retirement calculator.
$10,000 credit card at 20%, paying $300/mo
50 months
Total paid: $15,000. Total interest: $5,000.
$10,000 credit card at 20%, paying $500/mo
25 months
Total paid: $12,500. Total interest: $2,500. Paying an extra $200 cuts the time in half!
Related calculators
Results are estimates for educational purposes only and may not reflect all factors in your specific situation. This is not financial advice. Consult a qualified financial adviser for personalised guidance.