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Mortgage Payoff Calculator

Calculate how many months and how much interest you'll save by paying extra toward your mortgage principal each month.

Currency for this calculator
Time to Pay Off
15y 3m (183 months)
  • Total Interest Paid$120,999.49
  • Total Paid$330,999.49
Show your work
  1. Monthly interest rate = 6.5% ÷ 12 = 0.5417%
  2. Simulated month-by-month: interest = balance × monthly rate, then the payment reduces the balance, until it reaches $0.
  3. Result: 183 months, $120,999.49 in total interest.

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