What a $350,000 Mortgage Costs Over 30 Years

Your monthly payment on a $350,000 mortgage

On a $350,000 loan over 30 years, your monthly payment depends almost entirely on your interest rate. At 7 percent interest, you pay roughly $2,330 per month in principal and interest alone. At 6 percent, it drops to about $2,099. At 8 percent, it rises to roughly $2,570. These numbers assume you put 20 percent down and financed $280,000, which is the standard calculation.

Your actual bill will be higher because it includes property taxes, homeowners insurance, and possibly mortgage insurance or HOA fees. Those costs vary by location and your down payment size. A property tax bill in one county might be half what it is in another 50 miles away. This is why two people with identical loan amounts can have very different monthly housing costs.

The payment stays the same every month if you have a fixed-rate mortgage—that is the whole point of a fixed rate. An adjustable-rate mortgage (ARM) starts lower but can jump after the initial period ends, sometimes by hundreds of dollars per month. Most 30-year mortgages sold today are fixed-rate.

Key Takeaways

• A $350,000 mortgage at 7 percent interest costs about $2,330 per month in principal and interest, but your full payment includes taxes, insurance, and possibly mortgage insurance.
• Interest rates move daily, and even a 1 percent difference changes your monthly payment by $200 to $300.
• You pay far more interest in the first years of the loan than in the last years, so early extra payments reduce total cost significantly.
• Property taxes and insurance are not fixed—they rise over time, so your payment may increase even though your mortgage payment itself does not.
• A 15-year mortgage on the same amount costs roughly $2,330 per month at 7 percent, but you pay it off in half the time and pay far less total interest.

How interest rate changes affect your payment

Interest rates move daily based on market conditions, the Federal Reserve's actions, and lender competition. A rate that is available today may not be available next week. Even a 0.5 percent difference in rate changes your monthly payment by $100 to $150 on a $350,000 loan.

When you lock in a rate with a lender, you are protecting yourself against rate increases during the loan process. Lock periods typically last 30 to 60 days. If rates fall before closing, you may be able to renegotiate, but lenders charge a fee for a rate lock extension if you need more time.

Your credit score, down payment size, loan type, and the property itself all affect the rate you are offered. A borrower with a 750 credit score may receive a rate 0.5 to 1 percent lower than someone with a 650 score. A larger down payment (25 or 30 percent instead of 20 percent) can also lower your rate slightly.

What happens to your payment over 30 years

Your principal and interest payment never changes on a fixed-rate mortgage. You pay $2,330 (or whatever your rate produces) for 360 months straight. But the breakdown of that payment shifts dramatically. In month one, most of your payment goes to interest and very little to principal. By month 360, almost all of it goes to principal.

On a $280,000 loan at 7 percent, your first payment might be $1,860 in interest and $470 in principal. By year 20, the same $2,330 payment might be $600 in interest and $1,730 in principal. This is why paying extra early in the loan saves you so much money—every dollar of extra principal payment goes directly to reducing what you owe, not to interest.

Property taxes and homeowners insurance, however, do change. Taxes typically rise 2 to 4 percent per year depending on your county and local assessments. Insurance rises when claims in your area increase or when your home's replacement cost rises. Over 30 years, these costs can double or triple, which means your total monthly payment rises even though your mortgage payment itself stays flat.

The total cost of borrowing $280,000 over 30 years

At 7 percent interest, you pay roughly $560,000 in total principal and interest combined over 30 years. That means you pay about $280,000 in interest alone—as much as the original loan. At 6 percent, total interest drops to roughly $215,000. At 8 percent, it rises to roughly $410,000.

This is why the interest rate matters so much. A 1 percent difference in rate changes your total interest cost by $65,000 to $100,000 over the life of the loan. Shopping with multiple lenders and comparing rates can save you tens of thousands of dollars.

These numbers assume you make only the required payment every month for the full 30 years. If you pay extra toward principal—even $100 or $200 per month—you reduce both the total interest and the number of years you carry the loan. Paying an extra $200 per month on a $280,000 loan at 7 percent can save you over $80,000 in interest and shorten the loan by roughly 6 years.

30-year versus 15-year mortgages

A 15-year mortgage on $280,000 at 7 percent costs roughly $2,950 per month—about $600 more than a 30-year loan. But you pay off the house in half the time and pay only about $150,000 in total interest instead of $280,000. The trade-off is a higher monthly payment that strains your budget if you have other debts or irregular income.

A 30-year mortgage gives you lower monthly payments and more flexibility if your income changes or an emergency arises. A 15-year mortgage forces discipline and saves you enormous amounts in interest, but it requires a higher income to may have access to and leaves less room for other financial goals.

Some borrowers take a 30-year mortgage but pay it like a 15-year mortgage—making extra principal payments when they can afford them. This gives you the safety net of a lower required payment if money gets tight, but the benefit of faster payoff and lower interest if things go well.

Down payment size and mortgage insurance

If you put down less than 20 percent, you pay private mortgage insurance (PMI), which protects the lender if you default. On a $350,000 home with a 10 percent down payment, you borrow $315,000 instead of $280,000, and you pay PMI on top of your regular mortgage payment.

PMI typically costs 0.5 to 1.5 percent of the loan amount per year, paid monthly. On a $315,000 loan, that is roughly $130 to $390 per month. You can remove PMI once you reach 20 percent equity in the home, either through payments or through the home's value rising. This usually takes 5 to 10 years depending on your down payment and local market.

A larger down payment avoids PMI entirely and lowers your interest rate slightly. The trade-off is having less cash available for emergencies or other investments. Many borrowers find that putting down 15 or 20 percent and keeping reserves is smarter than draining savings to put down 30 percent.

Property taxes, insurance, and the full monthly cost

Your mortgage payment is only part of your housing cost. Property taxes vary wildly by location—from under 0.5 percent of home value per year in some states to over 2 percent in others. On a $350,000 home, that is anywhere from $1,750 to $7,000 per year, or $145 to $585 per month.

Homeowners insurance covers fire, theft, and liability. Costs range from $800 to $2,000 per year depending on the home's age, location, and your coverage level. In high-risk areas (flood zones, hurricane zones, areas with frequent theft), insurance can cost $3,000 to $5,000 per year.

Your lender requires you to pay taxes and insurance into an escrow account as part of your monthly mortgage payment. The lender then pays these bills on your behalf. This protects the lender's investment but means your actual monthly housing cost is often $500 to $1,000 higher than your principal and interest payment alone.

Frequently Asked Questions

What credit score do I need to get a mortgage on a $350,000 home?

Most lenders require a minimum credit score of 620 for a conventional loan, but scores of 740 and above receive the best rates. FHA loans allow scores as low as 580 with a larger down payment. Your score affects your interest rate more than your ability to borrow, so even a 50-point improvement can save you thousands over 30 years.

Can I pay off a 30-year mortgage early without a penalty?

Most 30-year mortgages have no prepayment penalty, meaning you can pay extra toward principal anytime without fees. Check your loan documents to confirm. Paying extra reduces your total interest and shortens the loan, but your required monthly payment stays the same unless you refinance.

What happens if interest rates drop after I lock in my rate?

You are locked into your rate for the agreed period, usually 30 to 60 days. If rates drop before closing, you can refinance later, but refinancing costs money in fees and resets your 30-year clock. Refinancing makes sense if rates drop by 0.75 percent or more and you plan to stay in the home at least five more years.

How much house can I afford with a $350,000 mortgage?

A $350,000 mortgage typically means a home price of $437,500 to $525,000 depending on your down payment (20 to 30 percent). Lenders use debt-to-income ratios to decide how much you can borrow—usually no more than 43 percent of your gross monthly income goes to all debts including the mortgage.

Does my payment change if property taxes or insurance go up?

Your principal and interest payment stays the same, but your escrow payment (the portion that covers taxes and insurance) rises when those costs rise. Your total monthly payment can increase $50 to $200 per year even though your mortgage payment itself does not change.