Buying a Home and Mortgages: The Real Monthly Cost

A lender quotes you a “mortgage payment,” but that number is smaller than what actually leaves your account each month. On a $400,000 home with 10% down at the July 2026 Freddie Mac rate of 6.49%, the principal and interest come to about $2,273 a month, and the real all-in cost is closer to $2,986 once property tax, homeowners insurance, and mortgage insurance are added. That is roughly 31.4% more than the figure most people budget for. You can run your own price, down payment, and rate in the Mortgage Calculator and see every line.

The rate is the part everyone shops for, and it deserves the attention. But the rate only sets the principal-and-interest line. The other three parts of the payment ride on top of it every month, and for a buyer putting down less than 20% they can add 31.4% to the bill. This is the hub for the whole topic. Below is what each piece is, why it moves, and how to budget the full stack instead of the loan quote.

PITI: the four parts of a real payment

The industry shorthand for a mortgage payment is PITI, which stands for principal, interest, taxes, and insurance. Only the first two come from your loan. The other two are the cost of owning the house at all, and your lender collects them for you.

• Principal is the slice of each payment that actually pays down what you borrowed. Early on it is small, because most of the payment goes to interest. It grows every month.
• Interest is the lender’s charge for the money. At 6.49% on a $360,000 loan, the first month’s interest alone is about $1,947, which is why the balance barely moves in year one.
• Taxes means your local property tax, billed once or twice a year but usually collected monthly into an escrow account so the money is ready when the bill comes.
• Insurance means your homeowners policy, also usually escrowed. If your down payment is under 20%, a second insurance line, PMI, joins here too.

In the example above, the $2,273 principal-and-interest line is what a rate quote shows you. The taxes and insurance add another $713 on top. Neither number is optional, and the second one is the one buyers forget.

The taxes and insurance the rate quote never mentions

Property tax is set by your county or city, not your lender, and the spread across the country is enormous. According to Tax Foundation 2025 data, New Jersey has the highest effective rate on owner-occupied homes at about 2.23%, with Illinois near 2.07% and Connecticut around 1.92% close behind. At the other end, Hawaii sits near 0.27% to 0.33%, and Alabama and Arizona land close to 0.43%. The national middle is roughly 1.0% to 1.1% of the home’s value each year, which is the figure the example uses.

That range matters more than a fraction of a percent sounds. On a $400,000 home, the $367 monthly tax line in the example (about 1.1%) becomes roughly $743 a month in New Jersey and about $100 a month in Hawaii. Same house price, a difference of more than $643 every month, purely from where the house sits. Property tax also tends to rise as the home’s assessed value rises, so it is not a fixed cost for the life of the loan the way principal and interest are.

Homeowners insurance is the other escrowed line, and the $167 a month in the example (about $2,000 a year) is an assumption, not a national law. Premiums vary hugely by state and risk. A house in a wildfire zone in California, a hurricane zone in Florida, or a flood zone in Louisiana can cost several times the assumption used here. When you price a home, get an actual quote for that address before you trust any monthly estimate, and change the insurance figure in the Mortgage Calculator to match.

PMI: the price of a smaller down payment

Private mortgage insurance is the line most first-time buyers do not see coming. On a conventional loan, if your down payment is under 20% of the price, the lender requires PMI, which protects the lender (not you) if you default. The CFPB is clear on the trigger: less than 20% down means PMI.

Freddie Mac’s own homeowner page puts the cost at roughly $30 to $70 per month for every $100,000 borrowed, and works an example at 0.51% of the loan per year. The calculator here uses about 0.6% a year, which sits inside that Freddie Mac range and comes to the $180 a month in the example on a $360,000 loan. Your actual rate depends on your credit score, your loan-to-value, and your debt-to-income, so treat it as an estimate and get a real quote.

Here is the part worth knowing before you sign, because it is federal law. Under the Homeowners Protection Act of 1998 (in effect since 1999), PMI on most conventional loans does not last forever:

• You can request cancellation once your loan balance is scheduled to reach 80% of the home’s original value. You need a good payment history, no second lien, a written request, and sometimes a fresh appraisal.
• The servicer must cancel it automatically when the balance is scheduled to reach 78% of the original value, as long as your payments are current. In the example, that is when the $360,000 balance amortizes down to about $312,000.
• A final backstop ends PMI the month after the midpoint of the loan’s schedule regardless of the balance, which is around year 15 of a 30-year loan.

The nuance that trips people up: these thresholds are based on the original value and the initial amortization schedule, not on today’s market price. If your home appreciates and you think you have crossed 20% equity sooner, you can ask your servicer about cancelling based on a new appraisal, but the automatic 78% rule runs off the original number. When PMI does drop, the payment in the example falls by $180, from about $2,986 to roughly $2,806.

The rate sets everything, and it has a long history

Every dollar of the principal-and-interest line traces back to one number: the rate. The Freddie Mac Primary Mortgage Market Survey is the benchmark quoted everywhere, and for the week of July 9, 2026 the 30-year fixed averaged 6.49%, with the 15-year at 5.82%. A year earlier the 30-year sat at 6.72%, so rates have barely moved. Freddie Mac’s survey reflects a strong-credit borrower with 20% down, so a specific quote will differ, and the number updates every Thursday.

Today’s mid-6% rate feels high against the pandemic era, but across 55 years of data it is close to ordinary. Freddie Mac’s series starts in April 1971 at 7.33%. It peaked at 18.63% in October 1981 during the inflation of that era, drifted down for decades, hit record lows near 3% in 2020 and 2021, spiked back to about 7.79% in 2023, and sits at 6.49% now.

The chart is the reason the payment stack matters so much right now. When rates were near 3%, the principal-and-interest line was small enough that taxes and insurance felt like the smaller cost. At 6.49%, principal and interest dominate again, and every quarter-point moves the payment by real money. Run two rates a point apart in the Mortgage Calculator to see how much the monthly payment moves.

Fifteen years or thirty: the same loan, two costs

The other lever on the principal-and-interest line is the term. A 15-year loan carries a lower rate and far less total interest, but the monthly payment jumps. On the same $360,000 loan, here is the trade at July 2026 rates.

The 15-year costs about $730 more a month, and in exchange it saves roughly $277,770 in interest over the life of the loan. The tradeoff is clear: the 30-year wins the number you feel every month, and the 15-year wins almost everything else. There is a middle path that many people prefer. Take the 30-year for the lower required payment, then send extra toward the principal in good months. Sending one extra mortgage payment a year shaves years off a 30-year loan without locking you into the higher required payment.

How big a payment can you carry

Lenders judge affordability with two ratios, and they are worth borrowing for your own budget. The front-end rule says your total housing payment (the full PITI, not just principal and interest) should stay near 28% of your gross monthly income. The back-end rule says all your monthly debt, housing plus car loans, student loans, and credit card minimums, should stay under about 36%.

Put a $90,000 income through that math with a $400 monthly debt load and a $40,000 down payment, and the ceiling on the housing payment lands near $2,100 a month, which supports a home price around $289,442 at today’s 6.49% rate. Notice that the affordable payment is the full PITI, so the taxes, insurance, and PMI you just read about eat directly into how much house you can buy. A buyer in a high-property-tax county qualifies for less house on the same income than a buyer in a low-tax one, because more of the 28% is spoken for before principal and interest.

This is why the take-home number matters more than the salary. Before you shop for a rate, know how much of a $60,000 salary you actually keep, because the payment is carried by what lands in your account, not by the gross figure on the offer letter. Then size the price to a payment you can make in a tight month, not the maximum a lender will approve.

The costs that hit before month one

Two more numbers belong in the budget, and both land before your first payment.

The down payment sets your loan size and decides whether you pay PMI at all. Conventional programs from Fannie Mae and Freddie Mac go as low as 3% down, FHA loans start at 3.5%, and 5% is a common conventional floor. Put down 20% and you skip PMI entirely. The tradeoff is real: a smaller down payment means a bigger loan, a bigger principal-and-interest line, and the PMI surcharge until you cross 78% of the original value. Confirm the exact minimum for your program with Fannie Mae or HUD, since they change.

Closing costs are the fees to originate the loan and transfer the house: lender fees, title, appraisal, escrow setup, and more. They typically run 2% to 5% of the loan amount, so on the $360,000 loan in the example that is roughly $7,200 to $18,000 due at signing, on top of the down payment. This figure excludes the agent commission, which is usually paid by the seller. Ask any lender for a Loan Estimate, the standardized form that lists these line by line, before you commit.

What this estimate leaves out

Every number here is an estimate built to match the live calculator, and it leaves things out on purpose. The property tax rate (about 1.1%) is a national middle, and your county could be double or half that. The homeowners insurance line ($2,000 a year) is an assumption, and high-risk states run far above it. PMI at about 0.6% a year is inside Freddie Mac’s stated range, but your quote depends on your credit and your loan-to-value. The 6.49% rate is a survey average for a strong-credit borrower with 20% down, pinned to the week of July 9, 2026, and it drifts every Thursday. This estimate also skips HOA dues (common at $200 to $400 a month for condos and planned communities), maintenance (budget roughly 1% of the home’s value a year), and any income-tax effect from deducting mortgage interest or property tax. Treat the stack as the full shape of the cost, and price your specific house with real quotes.

Common questions

Is the “mortgage payment” a lender quotes the full monthly cost? Usually no. A rate quote shows principal and interest. The real monthly cost is PITI, which adds property tax and homeowners insurance, plus PMI if you put down under 20%. In the example, that gap is about $713 a month, or 31.4% on top of the quoted payment.

How do I get rid of PMI? On a conventional loan, you can request cancellation when the balance is scheduled to reach 80% of the home’s original value, and the servicer must cancel it automatically at 78% if your payments are current. There is also a midpoint backstop around year 15 of a 30-year loan. All three come from the federal Homeowners Protection Act.

Why is my payment higher than the same house down the street? Property tax and insurance are local and personal. A different county tax rate, a higher insurance premium for the address, a smaller down payment that triggers PMI, or a higher rate on your specific credit profile can each move the number by hundreds of dollars a month on the same price.

What rate should I use to plan? Start with the Freddie Mac survey, 6.49% for the week of July 9, 2026, then get your own quote, because your rate depends on credit, down payment, and loan type. Model a range rather than a single number.

Where to go next

The real cost of a home is the whole stack, not the loan quote. Budget the PITI plus PMI and HOA, get real quotes for tax and insurance at the actual address, and you will not be surprised by the first payment. Run your own price, down payment, and rate in the Mortgage Calculator to see every line for your situation.

From here, see how one extra mortgage payment a year cuts years off the loan, check how much of a $60,000 salary you actually keep to size the payment against your take-home pay, and read investing and retirement to weigh paying down the house against building your long-term savings.