A typical monthly mortgage payment includes four components known as the acronym PITI: Principal, Interest, Taxes, and Insurance.
Understanding them individually makes it much easier to compare homes, loan options, and actual affordability.
Principal
The principal is the original amount of money you borrow, not counting any interest or fees.
If a buyer borrows $500,000, the starting principal balance is $500,000.
As principal is paid down, the loan balance decreases.
This is the part of the mortgage payment that actually builds equity through loan repayment.
Interest
Interest is what the lender charges for lending the money.
The interest rate has an enormous impact on the monthly payment, but there’s an important detail buyers sometimes miss:
Principal and interest do not get divided evenly throughout the life of a typical fixed-rate mortgage.
Early in the loan, a larger portion of each payment generally goes toward interest. Over time, more of the payment goes toward principal.
Property taxes
Property taxes can be a substantial part of the monthly housing cost, particularly in Chicagoland.
When taxes are escrowed, the lender generally collects a portion of the expected property tax bill each month and holds that money in an escrow account until the taxes are due.
This creates an important distinction:
Two homes with the exact same purchase price and mortgage rate can have meaningfully different monthly payments.
The taxes may be different.
That’s why I don’t like comparing homes on purchase price alone.
Homeowners insurance
Lenders generally require homeowners insurance on a financed property.
Like property taxes, the premium may be collected monthly through escrow rather than paid separately by the homeowner.
The cost can vary based on the property, coverage, deductible, insurer, and other factors.
Mortgage insurance
Depending on the loan program and down payment, the payment may also include mortgage insurance.
For many conventional loans, this is private mortgage insurance, or PMI.
It allows buyers to purchase with less than 20% down in many situations, but it adds another expense to the monthly payment until applicable cancellation or termination requirements are met.
Other loan programs can have different forms of mortgage insurance and different rules.
What about HOA assessments?
If you’re buying a condo, townhome, or into another association-run property, the HOA assessment is not technically part of the mortgage payment itself.
It is a separate housing expense.
So if a buyer is comparing:
Condo A: $3,200 mortgage payment + $700 HOA assessment
with
Condo B: $3,450 mortgage payment + $300 assessment
Condo A does not really cost $250 less per month.
Its combined monthly housing expense is actually higher before considering any other differences.
This is why the better question is often not:
“What’s the mortgage?”
It’s:
“What will this property actually cost me every month?”
Why the payment can change even with a fixed-rate mortgage
This catches people.
A fixed-rate mortgage means the interest rate on the loan is fixed.
It does not necessarily mean the total amount leaving the buyer’s bank account every month can never change.
Property taxes can change.
Insurance premiums can change.
Escrow requirements can change.
HOA assessments can change separately.
The principal-and-interest portion of a standard fixed-rate loan may remain stable while the buyer’s overall housing expense moves around it.
The larger lesson
Purchase price gets most of the attention because it is the biggest number on the listing.
But what buyers live with is the monthly cost.
When I compare properties, I want to understand the entire financial picture:
Principal. Interest. Taxes. Homeowners Insurance. Private mortgage insurance, if applicable. HOA assessments, if applicable.
Then we can start asking the more useful question:
What does owning this particular home actually cost?
That can make two similarly priced properties look very different.
See what others miss. Make every move count.
FAQs
What does PITI mean?
PITI stands for principal, interest, taxes, and insurance. It is commonly used to describe the major components of a monthly housing payment.
Is an HOA included in the mortgage payment?
Generally, no. HOA or condo assessments are typically paid separately from the mortgage, although lenders consider applicable HOA obligations when evaluating the borrower’s housing expenses and qualification.
Does putting 20% down eliminate mortgage insurance?
On a conventional mortgage, a 20% down payment generally means PMI is not required. Other loan programs have different mortgage-insurance structures, so buyers should confirm the specifics with their lender.
Why can two $500,000 homes have different monthly payments?
Taxes, insurance, HOA assessments, the amount financed, interest rate, mortgage insurance, and other costs can differ substantially between properties and buyers. Purchase price alone does not determine monthly cost.
