A typical US monthly mortgage payment includes four parts, known as PITI: principal, interest, property taxes and homeowners insurance. The Consumer Financial Protection Bureau (CFPB) calls these "the four basic elements of a monthly mortgage payment." Principal and interest repay the loan itself. The tax and insurance amounts usually go into an escrow account that the servicer uses to pay those bills when they come due. Many loans also add mortgage insurance, while homeowners association dues are usually paid separately.
This guide explains each part, who sets it, which parts can change from year to year, and where each one appears on the loan paperwork. It is general information about how US mortgages are structured, not advice about any particular loan.
The four parts of PITI
The CFPB's Ask CFPB page What is PITI? (last reviewed September 11, 2024, read September 28, 2026) defines the acronym and splits it into two groups: the principal and interest that go toward repaying the loan, and the amounts for property taxes and homeowner's insurance that "may go into an escrow account" if the borrower is required to have one or chooses to.
Principal is the part of each payment that reduces the amount borrowed. Every principal dollar lowers the loan balance.
Interest is the lender's charge for the money, calculated on the outstanding balance at the rate in the loan contract. The CFPB's page on how paying down a mortgage works (last reviewed May 28, 2024, read September 28, 2026) explains that "with a typical fixed-rate loan, the combined principal and interest payment does not change over the life of your loan, but the amounts that go to principal rather than interest do change." Early in the term, most of each payment goes to interest because the balance is high. Over time, more of each payment goes to principal. That shifting split is called amortization.
Taxes means the property tax on the home. The CFPB's Loan Estimate explainer states plainly that "property taxes are set by your local or state government, not by the lender." The lender only estimates the bill and collects toward it.
Insurance means the homeowners insurance policy that protects the property. Lenders generally require it because the house secures the loan. What that policy covers, section by section, is laid out in our guide to homeowners insurance Coverage A through F.
The fifth line many payments carry: mortgage insurance
PITI is the common shorthand, but many payments have a fifth component. The CFPB's page on the difference between a principal and interest payment and a total monthly payment (last reviewed August 28, 2023, read September 28, 2026) gives the full formula:
Principal + interest + mortgage insurance (if applicable) + escrow (homeowners insurance and tax) = total monthly payment
Mortgage insurance is different from homeowners insurance. Homeowners insurance protects the property. Mortgage insurance protects the lender if the loan is not repaid. The CFPB's Loan Estimate explainer says mortgage insurance is "typically required if your down payment is less than 20 percent of the price of the home." The CFPB's page on private mortgage insurance adds that the most common way to pay for it is a monthly premium, though it can also be paid as a one-time premium at closing, or with both.
Mortgage insurance does not always last for the life of the loan. When and how it can come off is a separate topic with its own rules, and the loan documents are the starting point for that question.
What is included in a mortgage payment, and who sets each part
The most useful way to read a mortgage payment is to notice that it bundles charges set by different parties. Only some of them are the lender's price.
| Component | Who sets the amount | Can it change on a fixed-rate loan? | Where it is documented |
|---|---|---|---|
| Principal | The loan contract (the note) | The split shifts each month; the combined principal and interest amount stays the same | The note and the amortization schedule |
| Interest | The loan contract | Not on a fixed rate; yes on an adjustable rate after reset | The note and the Loan Estimate |
| Property taxes | Local or state government | Yes, when assessments or tax rates change | The local tax bill |
| Homeowners insurance | The insurance company | Yes, at each renewal | The policy's declarations page |
| Mortgage insurance (if any) | The mortgage insurer or loan program | It can change or end under the loan's terms | The Loan Estimate and the loan documents |
This split explains most of the confusion people have about their payment. On a fixed-rate loan, the lender's part (principal and interest) is locked in by contract. The taxes and insurance are pass-through amounts: the servicer collects them and pays them out, but it does not decide what they are. When the county raises a tax bill or an insurer raises a premium, the monthly payment follows.
The insurance premium the servicer pays is printed on the policy's declarations page, which is why that page is the first document to check when the insurance share of a payment moves. Our walkthrough of how to read an insurance declarations page shows where the premium sits.
How the escrow account connects the pieces
Property taxes are often billed once or twice a year, and homeowners insurance is often billed annually. An escrow account turns those large, irregular bills into a steady monthly deposit. The CFPB describes an escrow account as one "set up by your mortgage lender to pay certain property-related expenses," funded by "a portion of your monthly mortgage payment."
Federal rules limit how much can be collected. Under Regulation X, the federal rule that implements the Real Estate Settlement Procedures Act (RESPA), the CFPB's text of 12 CFR 1024.17 (read September 28, 2026) lets a servicer charge each month "one-twelfth (1/12) of the total annual escrow payments which the servicer reasonably anticipates paying from the account," plus a cushion "no greater than one-sixth (1/6) of the estimated total annual payments from the account." One-sixth of a year is two months.
The same regulation defines an escrow account broadly enough to hold other property charges too: taxes, "insurance premiums (including flood insurance), or other charges." Flood coverage matters here because it is not part of a standard homeowners policy, as explained in our article on why flood insurance is a separate policy. Where a lender requires it, it can become another escrowed line.
A worked illustration
The figures below are invented for illustration only. They are round numbers chosen to show the arithmetic, not typical costs, and real amounts come from the loan documents, the local tax bill and the insurance policy.
Assume a fixed-rate loan with a principal and interest payment of $1,500 a month, an annual property tax bill of $3,600, and an annual homeowners insurance premium of $1,800, with no mortgage insurance.
- Annual escrowed costs: $3,600 + $1,800 = $5,400
- Monthly escrow deposit at one-twelfth: $5,400 / 12 = $450
- Total monthly payment: $1,500 + $450 = $1,950
In this illustration, almost a quarter of the payment is not the loan at all. If the tax bill later rose to $4,200, the monthly escrow share would rise by $50 (the $600 increase divided by 12), and the total payment would rise with it, even though the loan's rate and repayment schedule had not changed. Any cushion the servicer holds, and any shortage from the prior year, would be added on top of that. How those amounts are worked out is covered in the separate guide to the annual escrow analysis.
What is usually not included
The CFPB is specific about one common cost that sits outside the payment: "If you live in a condo, co-op, or a neighborhood with a homeowners' association, you will likely have additional fees that are usually paid separately." Homeowners association dues are therefore part of the cost of owning the home, but usually not part of the mortgage payment.
Other costs that are usually outside the payment include utilities, maintenance and repairs, and any optional coverage the homeowner buys directly. If a loan has no escrow account, the property tax and insurance bills are also outside the payment. The CFPB's Loan Estimate explainer notes that in that case the borrower will "have to pay these costs directly, often in large lump sum payments."
Where the payment appears on the Loan Estimate
Before closing, the federal Loan Estimate lays out the payment on page 1, in a section called Projected Payments. The CFPB's explainer walks through the rows:
- Principal & Interest, which the CFPB notes is usually less than the full payment because "your total monthly payment will typically be more than this amount due to taxes and insurance."
- Mortgage Insurance, if the loan carries it.
- Estimated Escrow, the monthly amount for bundled costs such as property taxes and homeowners insurance.
- Estimated Total Monthly Payment, described as "the total payment you will make each month, including mortgage insurance and escrow, if applicable."
- Estimated Taxes, Insurance & Assessments, which shows the property costs whether or not they are escrowed.
The CFPB's warning on this point is direct: "Many homebuyers make the mistake of looking at just the principal and interest payment, leading to an unpleasant surprise when they learn their total monthly payment is much higher." The total monthly payment row is the one that reflects PITI plus any mortgage insurance.
Why a mortgage payment changes over time
Because the payment bundles several charges, it can change even on a fixed-rate loan. The CFPB's page on why a monthly mortgage payment goes up (last reviewed January 14, 2025, read September 28, 2026) lists reasons including changes in property taxes or homeowners insurance premiums, the end of a temporary buydown, an interest rate change on an adjustable-rate mortgage, the start of principal payments after an interest-only period, a change in private mortgage insurance, new fees charged by the servicer, and servicer error.
The CFPB also notes that home values and taxes tend to move together: "if your home increases in value, your property taxes typically increase as well." That link runs through the escrow account, which is why the tax and insurance share of the payment is reviewed every year.
When to involve a professional
The breakdown of a specific payment is printed on the borrower's own documents: the Loan Estimate and Closing Disclosure before and at closing, the monthly mortgage statement, and the annual escrow account statement after that. Questions about those figures go first to the mortgage servicer, which can explain each line. A HUD-approved housing counselor, which the CFPB's Find a Counselor tool can locate, can walk through a payment with a borrower. Questions about the tax amount belong with the local tax assessor, and questions about the insurance premium belong with the insurance company or a licensed agent. The CFPB accepts complaints about mortgage servicers online or at (855) 411-CFPB (2372). It helps to have the loan number, the most recent statement and the escrow statement at hand for any of these conversations.
Frequently asked questions
What does PITI stand for?
Principal, interest, taxes and insurance. The CFPB describes them as the four basic elements of a monthly mortgage payment. Principal and interest repay the loan; taxes and insurance usually flow through an escrow account.
Is mortgage insurance part of PITI?
Not by the acronym, but it is often part of the payment. The CFPB's formula for a total monthly payment adds mortgage insurance "if applicable" to principal, interest and escrow. The Loan Estimate shows it on its own row.
Are HOA fees included in a mortgage payment?
Usually not. The CFPB says condo, co-op and homeowners association fees are "usually paid separately," directly to the association.
Why did my payment change if my rate is fixed?
A fixed rate locks in principal and interest, not the taxes and insurance. When the property tax bill or the insurance premium changes, the escrow share of the payment changes with it. The CFPB also lists buydowns, PMI changes, fees and servicer errors as other causes.
Does every mortgage have an escrow account?
No. The CFPB says many lenders require one, and some loans must have one by law, but without an escrow account the borrower pays property taxes and insurance directly.
Mortgage rules and the CFPB's guidance can change. The details in this article were checked against CFPB sources on September 28, 2026.