Mortgage Calculator

Houston Mortgage Calculator: Your Real Monthly Payment

Most mortgage calculators only show principal and interest. That number is misleading, especially in Texas. This calculator includes Houston property taxes, homeowner's insurance, PMI (when applicable), and HOA fees so you see what you'll actually pay each month. No surprises at closing.

How Your Monthly Mortgage Payment Is Calculated

Your monthly payment has four main components, commonly called PITI:

• Principal: The portion that reduces your loan balance each month.
• Interest: The cost of borrowing, determined by your rate and remaining balance.
• Taxes: Texas has no state income tax, but property taxes are higher than most states. Houston area rates range from 1.8% to 3.5% of assessed value annually.
• Insurance: Homeowner's insurance protects your investment. Houston premiums average $2,000 to $3,600 per year depending on location, age, and flood zone status.

Houston Property Tax Rates by Area

Property taxes in Houston vary dramatically by location. The biggest factor is whether the property is in a Municipal Utility District (MUD). MUD taxes fund water, sewer, and drainage infrastructure in newer developments and can add 0.5% to 1.5% on top of base county and school district rates.

Tax rates are approximate and vary by exact address, school district, and MUD. Use the area dropdown above to auto-fill rates, or enter a custom rate. For exact rates on a specific property, schedule a free consultation.

What Is PMI and When Can You Remove It?

Private Mortgage Insurance (PMI) is required on conventional loans when your down payment is less than 20%. It protects the lender, not you, in case of default. PMI typically costs 0.3% to 1.5% of the original loan amount per year, depending on your credit score and down payment.

On a $300,000 loan, PMI could add $75 to $375 per month. The good news: PMI on conventional loans can be removed once you reach 20% equity, either through payments or home appreciation. Your lender is required to automatically cancel PMI when you reach 22% equity based on the original purchase price.

FHA loans work differently. They charge a Mortgage Insurance Premium (MIP) that stays for the life of the loan in most cases. This is one reason some buyers refinance from FHA to conventional once they build enough equity. Learn more about FHA loans in Houston.

How Much House Can You Afford in Houston?

A common guideline is that your total housing payment (PITI plus HOA) should not exceed 28% to 33% of your gross monthly income. In Houston, the median household income is approximately $65,000, which supports a mortgage payment of roughly $1,500 to $1,800 per month.

But the real limit is your debt-to-income ratio (DTI). Most lenders cap total DTI at 43% to 50%, meaning all your monthly debts (mortgage, car payments, student loans, credit cards) combined cannot exceed that percentage of your gross income. A buyer with no other debts can qualify for significantly more than someone with $800 per month in existing obligations.

Houston is more affordable than most major metros, but property taxes and insurance make the gap smaller than the sticker price suggests. A $350,000 home in Houston with a 2.5% tax rate costs more per month than the same price home in a state with 1% property taxes. Always calculate the full payment, not just the purchase price. Use our free mortgage analyzer for a personalized breakdown based on your income and debts.

Houston Mortgage Calculator vs. National Calculators

National calculators from Bankrate, Zillow, and NerdWallet are useful starting points, but they don't account for Texas-specific costs. They won't warn you about MUD taxes that can push a seemingly affordable payment $200 to $300 higher per month. They don't factor in Houston's higher insurance premiums driven by hurricane, hail, and flood risk. And they can't tell you whether a specific neighborhood's HOA covers flood insurance or requires it separately.

This calculator uses Houston-specific defaults because we're Houston mortgage brokers who see these numbers every day. The area dropdown pre-fills actual tax rates for specific communities. The insurance default reflects real Houston premiums, not a national average. For the most accurate picture, pair this calculator with a free consultation where we run the exact numbers for your target property and financial profile.

Down Payment Options in Houston

You don't need 20% down to buy a home in Houston. Here are the most common options:

• Conventional loans: As low as 3% down for first-time buyers, 5% for repeat buyers. PMI required until 20% equity.
• FHA loans: 3.5% down with credit scores from 580. MIP required for the life of the loan in most cases.
• VA loans: 0% down for veterans and active military. No PMI. See our Houston VA loan guide.
• USDA loans: 0% down for eligible rural areas (parts of Katy, Conroe, and surrounding communities qualify).
• TSAHC grants: Up to 5% of the loan amount as a grant that never has to be repaid. Available to buyers at most income levels, not just first-time buyers. Learn about Houston down payment assistance.

Adjust the down payment slider above to see how different amounts affect your monthly payment and whether PMI applies.

Flood Insurance in Houston

If your property is in a FEMA-designated flood zone (Zone A or AE), your lender will require flood insurance. The average cost in Houston ranges from $700 to $3,000 per year depending on the zone, elevation, and building type. Even properties outside designated flood zones can flood in Houston. About 30% of Houston flood claims come from properties outside the 100-year floodplain.

This calculator does not include flood insurance in the estimate. If flood insurance is required or recommended for your property, add $60 to $250 per month to the calculated payment. Read our Houston flood zone buying guide for more details on how flooding affects your purchase.

Next Steps

Once you have a monthly payment range in mind, here's how to move forward:

1. Get a personalized analysis. Our free mortgage analyzer compares FHA, VA, and conventional options side by side based on your income, credit, and goals.
2. Get pre-approved. A pre-approval letter shows sellers you're serious and tells you exactly how much you can borrow. Apply now or book a free consultation.
3. Start your home search. Browse current Houston listings or explore Houston neighborhoods to find the right area for your budget.

InSync Homes & Loans handles both your mortgage and your home search under one roof. One team, one point of contact, from pre-approval through closing. Call 713-548-7350 or email ben@insync.homes.

Houston Mortgage Calculator FAQ

How do I calculate my Houston mortgage payment with MUD tax and HOA included?

Start with principal and interest based on the purchase price, down payment, and current rate. Then add the full local tax rate applied to the home's assessed value, not just the state rate. Houston total tax rates run 1.8 to 3.5 percent because MUD (Municipal Utility District) taxes and school district taxes stack on top of county and city. Add homeowner's insurance (roughly $1,500 to $3,500 per year in Houston depending on wind and flood exposure), PMI if you put less than 20 percent down, flood insurance if your zone requires it, and HOA dues (typical Houston master-planned communities run $60 to $300 per month; condos and gated communities can exceed $500). The calculator above bakes all of this in so you see the real PITI+HOA number, not just P&I. For the lowest-tax Houston zip codes, use 1.8 percent; for newer MUD-heavy suburbs like Katy, Cypress, or Manvel, use 2.7 to 3.3 percent.

Why are Houston mortgage payments higher than just principal and interest?

Your real monthly payment includes principal, interest, property tax escrow, homeowner's insurance, HOA dues, and sometimes PMI and flood insurance. Texas has no state income tax but some of the highest property tax rates in the country (1.8 to 3.5 percent), which adds $500 to $1,200 per month on a typical home. Flood insurance can add another $60 to $250 per month depending on zone. Always budget the full PITI+HOA, not just principal and interest, or your true affordability calculation will be off by 30 to 50 percent.

What is a MUD tax in Houston and how much does it add?

A MUD (Municipal Utility District) tax is an extra property tax in many Houston-area subdivisions that funds water, sewer, drainage, and road infrastructure. It stacks on top of county, city, and school district taxes. MUD taxes add 0.5 to 1.5 percent to your total tax rate. A home in a Katy MUD might be at 2.7 percent total, versus 2.1 percent inside Houston city limits. On a $450K home, that is a $225+ per month difference. MUD rates decrease over time as bonds pay off, but the first 10 to 15 years of a new MUD can be painful.

How much house can I afford in Houston?

Most lenders want total housing payment (PITI+HOA) at 28 to 33 percent of gross monthly income, with total debt at or below 43 to 50 percent. On an $80,000 household income, the affordable range in Houston is roughly $280,000 to $350,000, depending on down payment, rate, existing debts, and the target neighborhood's tax rate. Because Houston taxes are high, the same income qualifies for less home than it would in lower-tax states. Run your actual file through the free mortgage analyzer for a pre-approval number based on current rates.

Do I need flood insurance to close on a Houston home?

If the property sits in a FEMA-designated flood zone (A, AE, or VE), the lender will require flood insurance as a condition of closing. Even outside these zones, roughly 30 percent of Houston flood claims come from properties not in the 100-year floodplain (Hurricane Harvey made this point unforgettably). Standard homeowner's insurance does not cover flood damage. Premiums in Houston run $700 to $3,000 per year. Many Houston buyers carry it voluntarily even when not required.

How accurate is this Houston mortgage calculator?

Close. The calculator uses current Houston-area tax rates by zip/neighborhood, realistic insurance estimates, PMI rates by loan-to-value, and HOA inputs you control. The two variables that still need a real pre-approval are (1) your actual rate based on credit, loan program, and lock timing, and (2) any buydowns, incentives, or lender credits that lower the effective rate. For a number you can actually use to make offers, run the mortgage analyzer.