Harris County Property Taxes and Exemption Calculator

Harris County Property Taxes Explained (Cypress, Katy & CFISD Guide)

If you're buying a home in Cypress, Katy, Tomball, Hockley, or Waller, understanding Harris County property taxes can save you from surprises after closing. Two homes with the same price can have very different annual tax bills depending on the school district, MUD/WCID rates, and whether you qualify for exemptions like homestead or over 65.

Why property taxes vary so much in Harris County

Most homeowners think of “property taxes” as one number, but your total tax rate is usually a combination of multiple taxing entities, including:

• School district taxes (often the largest portion)
• County taxes
• Special districts (flood control, hospital district, etc.)
• MUD / WCID taxes (common in many newer subdivisions)

That’s why you’ll see total tax rates that can vary significantly even within the same general area.

Step 1: Find your appraised value and key tax info

Your starting point is your appraised value, which is the value used to calculate taxes (before exemptions). In Harris County, the easiest way to look this up is through the Harris Central Appraisal District (HCAD) property search:

HCAD Property Search (search.hcad.org)

On HCAD, you can typically find your current appraised value and see which taxing entities apply to your property.

Step 2: Understand the homestead exemption (and over-65 exemption)

If the home is your primary residence, filing for a Texas homestead exemption can reduce the amount of your home’s value that is taxable, especially for the school district portion of your taxes. Homeowners age 65+ may qualify for additional exemptions as well.

Because exemptions vary by taxing entity, it can be difficult to estimate your real tax bill without doing a detailed line-item calculation.

Step 3: Estimate your annual and monthly taxes with exemptions

To make this easier, we built a free Harris County Property Tax Calculator that estimates annual and monthly taxes using common Harris County taxing entities and allows you to adjust:

• Appraised value
• School district (CFISD, Katy ISD, Tomball ISD, Waller ISD)
• MUD/WCID tax rates (if applicable)
• Homestead and over-65 exemption amounts

Try the calculator here:
https://www.cyfairrealestate.com/buyers/harris-county-property-tax-calculator/

Watch: How Harris County property taxes work

Here’s a quick walkthrough video explaining how to calculate property taxes with exemptions in Harris County:

How to Calculate Property Taxes with Exemptions - YouTube

Frequently Asked Questions About Harris County Property Taxes

What is the property tax rate in Cypress TX?

Property tax rates in Cypress TX vary by MUD district, but most total tax rates range between 2.4% and 3.6%. The largest portion of the tax rate typically comes from the local school district, such as Cypress-Fairbanks ISD or Waller ISD.

What is the CFISD homestead exemption?

Cypress-Fairbanks ISD currently offers a 20% + $140,000 homestead exemption. Additional exemptions apply for homeowners age 65 and older.

How do MUD taxes work in Harris County?

Municipal Utility District (MUD) taxes fund infrastructure like roads, water, sewer, and drainage systems. MUD rates vary by subdivision and can significantly impact total property tax rates.

Want an exact tax breakdown for a specific address?

MUD districts and special exemptions vary by neighborhood. If you’d like help estimating the tax rate and exemptions for a specific home you’re considering in Cypress, Katy, Tomball, or Waller, feel free to reach out and we can run a detailed estimate.

Estimates only. Tax rates and exemptions can change. This does not account for tax ceilings, caps, special valuation limits, or every exemption type. Always verify with the taxing entities and your appraisal district.