The number most people mean when they say "my mortgage payment" is usually a bundle of four separate costs that lenders often collect together in a single monthly bill, sometimes abbreviated PITI: principal, interest, taxes, and insurance.
Principal is the portion of your payment that reduces the amount you actually owe on the loan. Interest is the cost of borrowing the money, calculated on your remaining balance. Early in a loan's life, a larger share of each payment typically goes toward interest, gradually shifting toward principal over time — a pattern called amortization.
Taxes and insurance are usually collected through an escrow account: instead of paying your annual property tax bill and homeowners insurance premium yourself in one or two lump sums, the lender collects a portion each month and pays those bills on your behalf when they're due. It's a convenience and a safeguard for the lender, not an extra fee on top of taxes and insurance you'd owe anyway.
If your down payment is below a certain threshold — commonly 20% on a conventional loan — you'll likely also see private mortgage insurance, or PMI, added to your payment. PMI protects the lender, not you, in case of default, and it's the trade-off for buying with a smaller down payment. On many conventional loans, PMI can generally be removed once you've built enough equity, typically by reaching around 20% equity in the home; on FHA loans, mortgage insurance rules differ and can last the life of the loan depending on your down payment.
Understanding this full picture matters because two homes at the same price can have very different real monthly payments once taxes, insurance, HOA dues, and mortgage insurance are factored in — which is exactly why the Find stage later in this Academy covers property taxes and HOA fees on their own.