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Your monthly mortgage payment is the biggest number in your home-buying budget. Understanding what goes into it helps you plan, compare loan options, and avoid surprises. This guide explains how mortgage payments work and what factors change them.
What Goes Into a Mortgage Payment?
Most people think a mortgage payment is just principal and interest. But most lenders also collect property taxes and insurance in your monthly payment. The full breakdown is called PITI:
- P — Principal: The portion of your payment that pays down your loan balance
- I — Interest: The cost of borrowing the money
- T — Taxes: Property taxes, collected monthly and held in escrow until due
- I — Insurance: Homeowners insurance, also held in escrow
If you put down less than 20%, you also pay PMI (private mortgage insurance), which is added to your monthly bill.
Sample Monthly Payment Breakdown
Home price: $350,000, 10% down ($35,000), 7% rate, 30-year term
| Component | Monthly Cost |
|---|---|
| Principal + Interest | $2,095 |
| Property Taxes (1.2%/yr) | $350 |
| Homeowners Insurance | $125 |
| PMI (0.8%/yr on loan) | $221 |
| Total Payment | $2,791 |
Rates as of May 2026. Rates change often. Check with each lender for current rates before you apply.
How Interest Rate Changes Your Payment
Interest rate is the biggest factor in your principal and interest payment. Even small rate changes make a big difference over a 30-year loan.
| Interest Rate | Monthly P+I on $300,000 | Total Interest Paid |
|---|---|---|
| 5.5% | $1,703 | $313,212 |
| 6.5% | $1,896 | $382,633 |
| 7.0% | $1,996 | $418,527 |
| 7.5% | $2,098 | $455,089 |
| 8.0% | $2,201 | $492,311 |
A 1% rate difference on a $300,000 loan costs you more than $65,000 over 30 years. That is why comparing mortgage rates matters so much.
For today’s rate comparisons, see our guide to the best mortgage refinance rates.
15-Year vs. 30-Year Mortgage: Which Is Better?
You can repay a mortgage over 15 or 30 years (and other terms). Here is how they compare on a $300,000 loan at 7%:
| Feature | 30-Year | 15-Year |
|---|---|---|
| Monthly P+I payment | $1,996 | $2,696 |
| Total interest paid | $418,527 | $185,367 |
| Total amount paid | $718,527 | $485,367 |
The 30-year mortgage has a much lower monthly payment, but you pay over $230,000 more in interest over the life of the loan. The 15-year option builds equity faster and saves a lot of money, but requires a higher monthly payment.
What Is Amortization?
Amortization is how your loan balance goes down over time with regular payments. In the beginning, most of your payment goes to interest. Over time, more goes to principal.
Here is what a $300,000 loan at 7% looks like in the first few years:
| Year | Principal Paid | Interest Paid | Remaining Balance |
|---|---|---|---|
| 1 | $3,765 | $20,985 | $296,235 |
| 5 | $5,303 | $19,447 | $279,420 |
| 10 | $7,471 | $17,279 | $256,290 |
| 20 | $14,818 | $9,932 | $194,020 |
| 29 | $27,932 | $2,818 | $26,893 |
This is why paying extra each month early in your loan can save a large amount of interest — you reduce the principal balance faster, which reduces the amount that accumulates interest.
PMI: What It Is and When It Goes Away
Private mortgage insurance (PMI) is required when you put down less than 20% on a conventional loan. It protects the lender, not you.
PMI typically costs 0.5% to 1.5% of your loan per year. On a $300,000 loan, that is $1,500 to $4,500 per year ($125 to $375 per month).
PMI goes away automatically once you reach 20% equity in your home (based on the original home value). You can also request its removal once you hit 20% equity through payments or appreciation.
How to Get a Lower Monthly Payment
- Put more money down. A 20% down payment eliminates PMI and reduces your loan amount.
- Improve your credit score. Better credit gets you a lower rate, which lowers your payment.
- Shop for the best rate. Getting quotes from 3 or more lenders can save you tens of thousands of dollars.
- Choose a longer term. A 30-year loan has a lower payment than a 15-year, though you pay more total interest.
- Refinance if rates drop. If you buy when rates are high and they drop later, refinancing can lower your payment significantly.
If you are a first-time buyer, explore low down payment programs in our guide to first-time homebuyer loan programs.
For FHA loan details, see our article on FHA loan requirements.
Frequently Asked Questions
- What is included in a mortgage payment?
- A full mortgage payment typically includes principal, interest, property taxes, homeowners insurance, and PMI if your down payment is less than 20%. This is often called PITI: principal, interest, taxes, and insurance.
- How is a mortgage payment calculated?
- Your payment is calculated using the loan amount, interest rate, and loan term. The lender uses a formula to divide your total loan cost (including interest) into equal monthly payments over the loan term.
- What is amortization?
- Amortization is the process of paying off a loan with regular payments over time. In the early years of your mortgage, most of each payment goes to interest. Over time, more of each payment goes to principal.
- How can I lower my monthly mortgage payment?
- You can lower your payment by making a larger down payment, getting a lower interest rate, choosing a longer loan term (30 vs. 15 years), or refinancing if rates drop.
- What is PMI and how much does it cost?
- PMI stands for private mortgage insurance. It is required when you put down less than 20%. It typically costs 0.5% to 1.5% of your loan amount per year, added to your monthly payment.
Bottom Line
Your mortgage payment is made up of principal, interest, taxes, insurance, and possibly PMI. Interest rate has the biggest impact on your payment — even a 0.5% difference saves or costs tens of thousands of dollars over 30 years. Shop around, improve your credit before you apply, and understand all the costs before you commit.