The mortgage payoff calculator helps you find out. Minnesota National Bank's Early Mortgage Payoff Calculator will show you what it will take to pay off your mortgage early.This Mortgage Payoff Calculator helps you find out. How To Pay Off My Mortgage Early. What if I Pay More Every Month? Use our early mortgage payoff calculator to see how fast you can pay off your mortgage. Free mortgage payoff calculator to evaluate options to pay off a mortgage earlier, such as extra payments, bi-weekly payments, or paying back altogether. Use this amortization calculator to help you determine how many months it could take to pay off your loan with or without making extra payments. This financial calculator helps you find out. View the report to see a complete amortization payment schedule, and how much you can save on your loan!