The mortgage payoff calculator helps you find out. Use this calculator to determine the Annual Percentage Rate (APR) for your mortgage.Use this free Michigan mortgage calculator to estimate your monthly mortgage payments and annual amortization. Use SmartAsset's free New York mortgage loan calculator to determine your monthly payments, including PMI, homeowners insurance, taxes, interest and more. You will be able to pay off your loan in due time. Use this calculator to determine how many payments it will take to pay off your loan. Calculate Loan Payments. Enter your total loan amount into this farm loan payment calculator to estimate your monthly payment and loan amount with interest. Calculate Loan Payments. Enter your total loan amount into this farm loan payment calculator to estimate your monthly payment and loan amount with interest.