The components of a mortgage payment are principal, interest, property taxes, and homeowners insurance, commonly shortened to PITI. If your down payment was less than 20% of the purchase price, mortgage insurance is folded in as a fifth piece. You send one amount to your loan servicer each month, and the servicer splits it across these categories based on your promissory note and escrow agreement.
Principal
Principal is the portion of your payment that actually reduces what you owe on the house. Each dollar applied to principal builds your ownership stake in the property.
In the early years, very little of your payment goes to principal. On a 30-year fixed-rate loan, a typical $1,000 monthly payment might send $700 toward interest and only $300 toward the balance in the first few years. That ratio flips over time. By the final years, nearly the entire payment reduces the balance, with only a sliver going to interest.
The reason is arithmetic. Interest is calculated on whatever balance remains, so when you owe $290,000 there is a lot of interest to pay. Once the balance shrinks to $50,000, the interest charge shrinks with it and more of each dollar goes to principal. The amortization schedule your lender creates at closing lays this out month by month.
Interest
Interest is the lender’s fee for letting you use their money. Your promissory note sets the rate, and the servicer calculates each month’s charge on the outstanding balance at the start of that billing cycle. This money goes to the lender or to the investors who hold your loan.
On a fixed-rate mortgage, the interest rate never changes, but the dollar amount of interest you pay each month steadily declines because the balance is shrinking. On an adjustable-rate mortgage, the rate itself can change at set intervals, so the interest portion can jump or drop independent of your principal balance.
Federal law requires lenders to tell you upfront exactly how much interest you’ll pay. The Truth in Lending Act mandates disclosure of the annual percentage rate (APR), the total finance charge over the life of the loan, and the monthly payment amount before you sign.1Consumer Financial Protection Bureau. What Is a Truth-in-Lending Disclosure? These disclosures let you compare offers from different lenders on equal footing.
Property Taxes
Property taxes fund local services like schools, roads, and emergency responders. Your county or municipality assesses them based on your home’s assessed value and the local tax rate. Rather than letting you handle a large annual bill on your own, most lenders collect one-twelfth of the estimated tax each month and hold it in an escrow account. When the bill comes due, the servicer pays it directly from those funds.
Lenders do this for a practical reason. An unpaid property tax bill can result in a tax lien that takes priority over the mortgage itself, threatening the lender’s collateral. Collecting through escrow ensures the taxes get paid.
The Real Estate Settlement Procedures Act (RESPA) limits how much a servicer can hold in escrow. The maximum cushion is one-sixth of the total estimated annual escrow disbursements, roughly two months’ worth of payments.2Consumer Financial Protection Bureau. 12 CFR 1024.17 – Escrow Accounts The servicer must also send you an annual escrow analysis statement showing how the money was collected and spent.
Property taxes are not fixed forever. Reassessments, voter-approved levies, and special assessments for infrastructure projects can all raise the bill. When they do, your monthly escrow payment goes up to match, and your total mortgage payment rises with it. This is why homeowners with a fixed-rate mortgage sometimes see their payment climb from year to year.
Homeowners Insurance
Homeowners insurance covers damage to your property from events like fire, storms, and theft. Lenders require it because the house is their collateral. If it burns down and there’s no insurance, both you and the lender lose. The annual premium is divided by twelve and folded into your monthly escrow payment alongside property taxes.3Consumer Financial Protection Bureau. What Is Homeowners Insurance? Why Is Homeowners Insurance Required?
If your policy lapses, whether by a missed premium or a cancellation, the servicer will buy a policy on your behalf called force-placed insurance. Federal rules require the servicer to send you a written notice at least 45 days before charging you, followed by a reminder notice at least 15 days before the charge. Force-placed policies typically cost far more than a standard policy, and they protect only the lender, not you. If you later provide proof of your own coverage, the servicer must cancel the force-placed policy within 15 days and refund any overlapping charges.4eCFR. 12 CFR 1024.37 – Force-Placed Insurance
Depending on where you live, your lender may also require separate flood insurance or windstorm coverage, which adds to the escrow amount. Standard homeowners policies exclude flood damage, so borrowers in FEMA-designated flood zones pay for that coverage separately.
Mortgage Insurance
If your down payment was less than 20% of the home’s purchase price, your payment likely includes mortgage insurance. This protects the lender, not you, if you default. What you pay and when it ends depend on the loan program.
Private Mortgage Insurance on Conventional Loans
Conventional loans require private mortgage insurance (PMI). Annual PMI costs typically fall between 0.46% and 1.50% of the original loan amount, depending on your credit score, down payment size, and loan term.5Fannie Mae. What to Know About Private Mortgage Insurance On a $300,000 loan, that translates to roughly $115 to $375 per month. The premium is usually added to your monthly mortgage bill.
PMI doesn’t last forever. Under the Homeowners Protection Act, you can request cancellation once your loan balance reaches 80% of your home’s original value, meaning you’ve built 20% equity based on your payment history. The servicer must automatically terminate PMI once the balance is scheduled to reach 78% of the original value, as long as you’re current on payments.6FDIC. V-5 Homeowners Protection Act The key phrase is “original value.” The termination thresholds are based on your home’s purchase price or appraised value at closing, not its current market value.7Office of the Law Revision Counsel. 12 U.S.C. 4902 – Termination of Private Mortgage Insurance
FHA Mortgage Insurance Premium
FHA loans have a two-part insurance structure. You pay an upfront mortgage insurance premium (UFMIP) of 1.75% of the base loan amount at closing, which most borrowers finance into the loan rather than paying out of pocket.8HUD. What Is the FHA Mortgage Insurance Premium Structure for Forward Mortgage Loans On top of that, you pay an annual premium divided into monthly installments. For a typical 30-year FHA loan with a base amount at or below $726,200 and a down payment of less than 5%, the annual premium is 0.55% of the loan amount.
For most FHA loans originated after June 2013 with less than 10% down, the annual mortgage insurance premium never drops off. It lasts the life of the loan. The only way to eliminate it is to refinance into a conventional loan once you have enough equity. If you put down at least 10%, the annual premium cancels after 11 years.
Why Your Escrow Portion Can Change
Your servicer performs an annual escrow analysis, comparing what was collected against what was actually disbursed for taxes and insurance. If costs went up and the account doesn’t have enough to cover next year’s projected bills, you have an escrow shortage.
A shortage and a deficiency are different problems. A shortage means the account balance is lower than the target amount needed for the coming year. A deficiency means the account has gone negative, usually because the servicer advanced funds to cover a bill the escrow couldn’t.2Consumer Financial Protection Bureau. 12 CFR 1024.17 – Escrow Accounts
For shortages equal to or greater than one month’s escrow payment, the servicer must spread the repayment over at least 12 months. For smaller shortages, the servicer can require a lump-sum payment within 30 days or spread it over 12 months.2Consumer Financial Protection Bureau. 12 CFR 1024.17 – Escrow Accounts Either way, the shortage gets folded into your monthly payment, which is why an annual escrow statement can push a “fixed” mortgage payment up by $100 or more.
Escrow surpluses work the other way. If the servicer overestimated expenses and collected too much, any surplus above $50 must be refunded to you within 30 days of the analysis. Reviewing your annual escrow statement carefully catches errors in projected tax amounts or insurance premiums before you overpay all year.
Costs That Are Not Part of PITI
A few charges affect your total housing cost but do not appear inside the standard mortgage payment:
- Homeowners association dues are almost never included in your mortgage escrow. You pay these separately to the association, typically monthly or quarterly. Failing to pay can result in a lien on your property, so don’t assume your servicer handles them.
- Flood insurance is required as a separate policy if your property sits in a FEMA-designated flood zone. This premium is usually collected through escrow alongside your standard homeowners insurance.
- Special assessments are one-time taxes local governments occasionally levy for specific infrastructure projects. These are tied to the property and can be added to your tax bill, increasing your escrow payment until the project is paid off.
None of these are part of the PITI breakdown, but each one belongs in your monthly housing budget.