Editorial note: This guide is for general education, not individualized financial advice. We independently research every topic and cite our sources. Our editorial standards · How we make money.
Quick answer
A monthly mortgage payment usually has four parts — principal, interest, property taxes and homeowners insurance (PITI) — plus mortgage insurance if your down payment was small. Early payments go mostly to interest; over time more goes to principal. Taxes and insurance are collected into an escrow account and paid by your servicer.
Key takeaways
- Principal and interest stay the same on a fixed-rate loan, but the split between them changes every month.
- Escrow payments can rise or fall when property taxes or insurance premiums change.
- On most conventional loans, PMI can be removed once you reach 20% equity and ends automatically at 22%.
- Extra principal payments early in the loan save the most interest.
In this guide
How to estimate your monthly mortgage payment: the steps at a glance
Estimated time: 15 minutes
- Find the loan amount. Subtract your down payment from the home price.
- Calculate principal and interest. Use the amortization formula or a mortgage calculator with your rate and term.
- Add property taxes. Divide the annual property tax bill by 12.
- Add homeowners insurance. Divide the annual premium by 12.
- Add mortgage insurance and HOA dues. Include PMI if you put less than 20% down on a conventional loan, and any monthly HOA dues.
A mortgage payment looks like one number on your bank statement, but it is really several payments bundled together. Understanding each piece helps you budget accurately, spot changes and decide whether to pay extra. Follow along with your own numbers in the mortgage calculator.
The four parts of a mortgage payment: PITI
| Component | What it pays for | Can it change? |
|---|---|---|
| Principal | Reduces what you owe | The share grows each month |
| Interest | The lender’s charge for the loan | The share shrinks each month; the rate changes only on ARMs |
| Taxes | Property taxes, collected into escrow | Yes, when tax bills change |
| Insurance | Homeowners insurance, collected into escrow | Yes, when premiums change |
Many loans also include mortgage insurance (PMI on conventional loans, MIP on FHA loans), and some homeowners pay HOA dues separately.
Example payment
A $400,000 home with 15% down ($60,000), a 30-year fixed rate of 6.5%, $4,400 in annual property taxes and $1,900 in annual insurance:
| Component | Monthly |
|---|---|
| Principal & interest (on $340,000) | $2,149 |
| Property taxes | $367 |
| Homeowners insurance | $158 |
| PMI (0.6% of loan per year, estimate) | $170 |
| Estimated total | $2,844 |
How amortization works
Most mortgages are fully amortizing: the principal and interest payment stays the same each month, and by the final payment the balance reaches zero. What changes is the split.
Interest each month equals the remaining balance × (annual rate ÷ 12). Early in the loan, the balance is large, so most of the payment is interest. As the balance falls, the interest portion shrinks and more goes to principal.
On the $340,000 loan above:
| Interest | Principal | |
|---|---|---|
| Payment 1 | $1,842 | $307 |
| Payment 180 (year 15) | about $1,341 | about $808 |
| Payment 360 (final) | about $12 | about $2,137 |
Over 30 years, total interest on this loan would be about $434,000 — more than the amount borrowed. That is why rate, term and extra payments matter so much.
What escrow is and why it changes
Most lenders require an escrow account (also called an impound account). Each month, part of your payment goes into the account, and your servicer uses it to pay property taxes and homeowners insurance when they are due.
Once a year, the servicer performs an escrow analysis. If taxes or insurance went up, your monthly payment increases — even on a fixed-rate loan. If there is a shortage, you may be asked to pay it as a lump sum or spread over the next year. If there is a surplus above a set amount, you generally receive a refund.
Private mortgage insurance (PMI)
If you put less than 20% down on a conventional loan, lenders usually require PMI, which protects the lender — not you — if you default. It is typically charged monthly as a percentage of the loan.
Under the federal Homeowners Protection Act, for most conventional loans:
- You can request cancellation once your balance is scheduled to reach, or you have paid it down to, 80% of the home’s original value, if you have a good payment history and meet other requirements.
- PMI generally ends automatically when the balance is scheduled to reach 78% of the original value, if you are current on payments.
FHA loans use a mortgage insurance premium (MIP) with different rules; for many FHA loans it lasts much longer or for the life of the loan, which is one reason some borrowers later refinance.
Fixed-rate vs. adjustable-rate payments
- Fixed-rate: principal and interest never change.
- Adjustable-rate (ARM): after the initial fixed period, the rate resets periodically based on an index plus a margin, within caps. Your principal and interest payment can rise or fall.
Before choosing an ARM, calculate the payment at the maximum rate allowed by the caps to make sure you could afford it.
How extra payments change the math
Extra principal payments reduce the balance immediately, which lowers every future interest charge. On the $340,000 loan at 6.5%:
| Extra per month | Payoff time | Interest saved |
|---|---|---|
| $0 | 30 years | — |
| $100 | about 26 years 5 months | about $62,000 |
| $300 | about 21 years 7 months | about $142,000 |
Approximate; assumes extra payments start with the first payment.
Tips for paying extra:
- Tell your servicer to apply the extra amount to principal.
- Check that your loan has no prepayment penalty (uncommon on most modern residential mortgages, but check).
- Keep your emergency fund and retirement savings on track first.
Your payment and your budget
A common lending guideline keeps total housing costs (PITI plus HOA dues) near 28% of gross monthly income. Remember costs outside the mortgage payment too: utilities, maintenance and repairs. Our guide how much house can I afford? explains how to set a comfortable budget, and the home affordability calculator turns your income into a price range.
The bottom line
Your mortgage payment combines principal, interest, taxes, insurance and sometimes mortgage insurance. Principal and interest are predictable on a fixed-rate loan; taxes and insurance can change. Extra principal payments early in the loan save the most interest. Explore more in our mortgage hub.
Frequently asked questions
Why did my mortgage payment go up if I have a fixed rate?
Is it better to pay extra on my mortgage or invest?
What is an amortization schedule?
What happens if I pay my mortgage late?
Sources
- Owning a Home — Consumer Financial Protection Bureau
- Homeowners Protection Act (PMI cancellation) — Consumer Financial Protection Bureau
- Primary Mortgage Market Survey — Freddie Mac
This guide is part of our Mortgage hub and our complete personal finance guide. Spot an error? Request a correction.