Mortgage Payment Calculator Going to buy a house?  Fill in the form below and we will calculate what your monthly payment will be.  We will also tell you how much total interest you will pay.. Amount to Borrow: Annual Interest Rate: Loan Term (in Years): Powered by yourmoneypage.com.  This calculator is provided as a free service. No guarantee, explicit or implied, is made regarding its' accuracy or suitability to a specific purpose.