A mortgage is the largest loan most people ever take — and the most misunderstood. Here is how a home loan is built, what your monthly payment actually covers, and why the early years look so different from the later ones.
A mortgage is a loan used to buy a home. You borrow most of the purchase price, put down the rest, and repay the loan in monthly payments over a long term — most commonly 15 or 30 years. The home itself is the collateral: if the loan is not repaid, the lender can foreclose.
What makes a mortgage feel complicated is that the monthly payment is not one thing — it bundles several costs together, and the split between them changes over the life of the loan. Once you can name the parts, a mortgage becomes far less mysterious. The rest of this guide breaks them down.
A typical mortgage payment has four parts, often shortened to PITI:
The escrow account is the piece many buyers miss. Rather than facing a large property-tax bill and an annual insurance premium on their own, your servicer collects a slice of each with every payment and pays those bills for you when they come due. It spreads lumpy costs evenly across the year. If your down payment was small, the payment may also include mortgage insurance, which protects the lender and can often be removed once you build enough equity.
The term is how long you take to repay — a 30-year mortgage spreads the loan over 360 payments, a 15-year over 180. A longer term means a lower monthly payment but more interest paid overall; a shorter term means a higher payment but far less total interest and faster equity.
Within that term, the loan follows an amortization schedule — a fixed plan for paying it off. The surprising part: in the early years, most of each payment goes to interest, with only a little chipping away at principal. As the balance falls, the interest share shrinks and the principal share grows, so the later years pay the loan down quickly.
This is the single most useful thing to understand about a mortgage. Because interest is front-loaded, extra payments toward principal early in the loan save the most — each dollar removes future interest. It is also why selling or refinancing after only a few years means you have built less equity than the payments might suggest. Knowing the shape of amortization is what turns a mortgage from a mystery into a plan you can manage.
A mortgage is a loan used to buy a home, repaid in monthly payments over a long term — commonly 15 or 30 years. Each payment covers interest and part of the principal, and the home itself is the collateral. If the loan is not repaid, the lender can foreclose.
A typical monthly mortgage payment has four parts, often called PITI: principal, interest, property taxes, and homeowners insurance. Taxes and insurance are usually collected into an escrow account and paid on your behalf. A payment may also include mortgage insurance if the down payment was small.
An escrow account is held by the loan servicer to collect a portion of your property taxes and homeowners insurance with each monthly payment. When those bills come due, the servicer pays them from escrow, so the cost is spread evenly across the year instead of arriving in large lump sums.
Amortization is the schedule by which a mortgage is paid off. Early payments are mostly interest with a little principal; over time the balance shifts so later payments are mostly principal. This is why paying extra toward principal early in the loan saves the most interest.
Now that you know how a mortgage is built, these guides help you act:
