Debt-Free Date Calculator
Find out when you will be completely debt-free.
Enter your balance, interest rate, and monthly payment to see your payoff date.
Debt-Free Date
Debt-Free Date is calculated using the standard amortization formula to determine how many months it takes to pay off a balance at a given interest rate.
The core formula is:
Months = -log(1 - (r × B / P)) / log(1 + r)
Where:
- B = current balance (total debt remaining)
- P = monthly payment amount
- r = monthly interest rate (annual rate divided by 12)
How it works step by step:
- Each month, interest accrues on your remaining balance
- Your payment first covers the interest, then reduces the principal
- As the balance shrinks, more of each payment goes toward principal
- This acceleration effect means the last months pay off debt faster than the first
Important considerations:
- Your monthly payment must exceed the monthly interest charge, otherwise your debt grows instead of shrinking
- Monthly interest = Balance × (Annual Rate / 12)
- Even small extra payments can dramatically reduce your payoff time
- For example, on a $10,000 balance at 18% APR, paying $250/month takes 62 months (5+ years) and costs $5,432 in interest
- Increasing that to $300/month cuts it to 47 months and saves $1,681 in interest
Total interest paid is calculated as:
Total Interest = (Monthly Payment × Number of Months) - Original Balance
This calculator assumes a fixed interest rate and consistent monthly payments. Variable rates, missed payments, or additional charges will change your actual payoff date.