A fixed-rate mortgage payment is calculated using the loan amount, interest rate, and term. The standard formula produces a level monthly payment that covers both principal and interest. Taxes, insurance, PMI, and HOA are added on top to get the total payment.

Private mortgage insurance (PMI) is typically required when your down payment is less than 20% of the home value. PMI protects the lender if you default. It is usually expressed as an annual percentage of the loan amount, paid monthly.

A total monthly payment usually includes principal and interest (P&I), property taxes, homeowners insurance, PMI (if applicable), and HOA dues. Lenders often collect the tax and insurance portions into an escrow account.

A shorter loan term (e.g. 15 years) means higher monthly payments but less total interest paid. A longer term (e.g. 30 years) lowers the monthly payment but increases the total interest cost over the life of the loan.