Mortgage PITI (Principal, Interest, Taxes & Insurance) Calculator View Calculator Calculate the monthly payments for a mortgage including principal, interest, taxes and insurance (PITI). Enter your sale price, down payment, the interest rate and the term of the loan. This calculator will then show you the monthly principal and interest payment, the total amount of interest you will pay and the total amount of money you will spend over the life of the loan. You can also enter the points and other closing costs and roll those into your loan. Enter the anticipated costs for property tax, homerowner's insurance, and PMI (Private Mortgage Insurance) to get a much more accurate monthly mortgage payment than just principal and interest (P&I). You can even enter an additional payment amount you intend to pay each month to work down your principal and the calculator will show you the anticipated payoff time. You can display and/or print the entire amortization schedule for your loan. Learn more about putting this calculator or other calculators on your website.