Texas has 254 counties — more than any other state — and each one assigns its own property tax ID to every parcel of land within its borders. Whether you’re buying a home in Houston, Austin, or a small rural county, understanding this number puts you in control of your property tax records, exemptions, and appeal rights. This guide walks you through exactly how to find your Texas property tax ID, what it means, and how to use it.
What Is a Texas Property Tax ID Number?
In Texas, the property tax ID number is called a property ID, account number, or parcel number, and it is assigned by your county’s Central Appraisal District (CAD) — not the county tax assessor-collector. Texas separates the appraisal function from the tax collection function, so two different offices handle your property.
The CAD is responsible for:
- Assigning the property ID
- Estimating fair market value each January 1
- Maintaining the property records database
- Processing exemptions and appeals
The county tax assessor-collector (or in some cases, a city or school district collector) is responsible for:
- Calculating the actual tax bill
- Sending statements
- Collecting payments
- Issuing tax certificates
Both offices reference the same property ID, so you can use it to look up information at either office.
How to Find Your Texas Property Tax ID Number
There are several reliable ways to locate your property ID, all free.
1. Check Your Tax Statement
Your county tax assessor-collector mails a tax statement between October and November each year. Your property ID appears near the top, often labeled “Account Number,” “Property ID,” or “Geo ID.” It is the most reliable source for the exact format your county uses.
2. Search Your County CAD Website
Every Texas county has a CAD with a public property search portal. Enter your street address, owner name, or DBA to retrieve your full property record including the property ID. The Texas Comptroller of Public Accounts maintains a directory of all 254 CAD websites.
3. Use the Texas Comptroller’s Property Tax Assistance Division
The Texas Comptroller’s website offers statewide tools and links for property tax research, including access to state-mandated ratio studies and appraisal data by county.
4. Check Your Deed or Closing Documents
Your deed and closing disclosure contain the legal description and often the property ID or account number assigned by the CAD at the time of closing.
How to Read a Texas Property Tax ID
Texas has no single statewide property ID format — each CAD designs its own. Common formats include:
Abstract-Survey Format
Rural and older Texas properties are often described by abstract number and survey name — a system dating to the original land grants. A property ID might look like A0123-SMITH-J-1.5AC, encoding the abstract, original grantee name, and acreage.
Subdivision-Block-Lot Format
Urban and suburban platted properties use a lot-and-block system. Example: OAKWOOD HEIGHTS BLK 4 LOT 12, encoded into a numeric ID by the CAD.
Sequential Account Number
Large counties like Harris, Dallas, and Tarrant often issue a simple sequential numeric account number (e.g., 0650890000014) that acts as a database key rather than encoding location.
Your CAD’s website will show you the exact format used locally.
Texas Property Tax Rates by County
Texas has no state income tax, so local governments rely heavily on property taxes. Rates vary significantly — some of the highest effective rates in the country are found here. The total rate you pay is the combined millage of all taxing units that overlap your parcel: county, school district, city, MUD (municipal utility district), hospital district, and others.
| County | Approx. Effective Rate | Notes |
|---|---|---|
| Harris (Houston) | 2.09% | Includes HISD and city; rate varies by school district |
| Dallas | 2.18% | One of the highest in the state |
| Tarrant (Fort Worth) | 2.26% | High combined school + city + county rates |
| Bexar (San Antonio) | 2.10% | Includes SAISD and city millage |
| Travis (Austin) | 1.80% | Lower than Dallas/Houston metros |
| Collin (Plano area) | 1.70% | Growing suburbs, competitive rates |
| Denton | 1.85% | North DFW suburbs |
| Fort Bend | 2.23% | High MUD rates add to base |
| Montgomery | 1.90% | North Houston suburbs |
| El Paso | 2.24% | Higher rate, lower home values |
| Williamson (Round Rock) | 1.80% | Austin metro growth county |
| Hays (Kyle/Buda) | 2.02% | Rapid growth; high school district rates |
Texas effective property tax rates are among the highest in the U.S., averaging around 1.60–1.80% statewide, with metro areas typically running higher. Always verify current rates with your CAD — rates reset each year as taxing units set their budgets.
How Texas Property Taxes Are Calculated
Understanding the math helps you verify your bill and spot errors before the deadline.
Step 1: Appraisal by the CAD
The CAD estimates your property’s market value as of January 1 each year. This is a mass appraisal — not an individual appraisal — using comparable sales, cost approach, and income data for commercial property.
Step 2: Appraised Value = Market Value (Usually)
In Texas, appraised value equals market value unless a cap applies. The homestead cap (see below) limits how fast the appraised value can rise for a primary residence.
Step 3: Subtract Exemptions
Applicable exemptions reduce the taxable value. The homestead exemption removes at least $100,000 from the school district portion; other exemptions vary by taxing unit.
Step 4: Apply Each Taxing Unit’s Rate
Each taxing unit (school district, county, city, MUD, etc.) sets its own millage rate and calculates its portion of your bill separately. The total tax bill is the sum of all taxing unit bills.
Example: $400,000 appraised − $100,000 homestead exemption = $300,000 taxable × 1.80% = $5,400 school district tax (plus separate county, city, and other unit taxes)
Texas Property Tax Exemptions
Texas offers some of the most generous property tax exemptions in the country. Missing one is money left on the table.
Homestead Exemption
If the property is your primary residence, you qualify for the homestead exemption. As of 2023, the Texas Constitution requires school districts to exempt $100,000 of your home’s appraised value. Many counties and cities layer on additional local exemptions of 5–20% of value.
The homestead designation also triggers the 10% appraisal cap — your appraised value cannot increase more than 10% per year, no matter how fast the market rises. This cap can be enormously valuable in a hot real estate market.
Deadline to apply: April 30 of the tax year. File with your county CAD — most accept online applications. You only apply once; it renews automatically.
Over-65 Exemption
Homeowners age 65 or older receive an additional exemption (at least $10,000 from school taxes on top of the homestead exemption) and a tax freeze — school district taxes cannot increase as long as you own and occupy the home. Many counties and cities also offer over-65 exemptions of their own.
Disabled Persons Exemption
Homeowners who qualify as disabled under Social Security or SSI rules receive the same school district exemption as those over 65, including the tax freeze option. You cannot claim both the over-65 and disabled exemption simultaneously.
Disabled Veterans Exemption
Veterans with a disability rating from the VA receive a partial or total exemption depending on the percentage rating:
| VA Disability Rating | Exemption Amount |
|---|---|
| 10%–29% | $5,000 of appraised value |
| 30%–49% | $7,500 of appraised value |
| 50%–69% | $10,000 of appraised value |
| 70%–100% | $12,000 of appraised value |
| 100% (total and permanent) | Full exemption — $0 property tax |
Agricultural (Ag) and Wildlife Exemptions
Rural Texas landowners may qualify for a special agricultural appraisal based on the land’s productivity value rather than market value — often reducing the taxable value by 70–90%. Wildlife management is an alternative qualifying use. This is commonly called an “ag exemption” though technically it is a special valuation method.
How to Appeal Your Texas Property Tax Assessment
Texas property owners have strong appeal rights, and a successful protest can save hundreds or thousands of dollars per year. The process is straightforward but has hard deadlines.
Protest Deadline
You must file your protest by May 15 of the tax year, or within 30 days of the date on your Notice of Appraised Value — whichever is later. Missing the deadline forfeits your right to appeal that year.
How to File
File a Notice of Protest (Form 50-132) with your county CAD. Most CADs now accept online filing through their websites. State the grounds for your protest — most commonly “value is over market value” or “value is unequal compared to similar properties.”
Informal Hearing
Most protests begin with an informal meeting with a CAD appraiser. Come prepared with comparable sales data (recent sales of similar homes), a recent independent appraisal if you have one, and photos of any defects or issues. Many protests are resolved at this stage with a reduction.
Appraisal Review Board (ARB)
If you are unsatisfied with the informal outcome, you can present your case to the ARB — an independent panel of citizens. The hearing is formal but relatively simple. The ARB’s decision is binding unless you appeal further.
Further Appeals
If the ARB decision is still unsatisfactory, you can appeal to district court, the State Office of Administrative Hearings (SOAH), or binding arbitration. These options are typically used for high-value commercial properties.
Pro tip: Even a modest home protest is worth filing. Many Texas CADs settle 60–80% of protests with a reduction. The filing is free and takes about 10 minutes online.
When Are Texas Property Taxes Due?
Texas property tax bills are mailed between October and November and are due by January 31 of the following year without penalty. A 7% penalty and interest accrues on February 1 if unpaid. Accounts delinquent past July 1 are subject to an additional 20% attorney collection fee.
Payment Options
- Online through your county tax assessor-collector’s website (credit card, e-check)
- In person at the tax office
- By mail (postmark by January 31)
- Installment payments if you qualify (over-65, disabled, or certain other conditions)
Escrow Payments
If you have a mortgage, your lender likely collects 1/12 of your estimated annual tax bill each month into an escrow account and pays the tax directly. Verify your escrow payment is sufficient each year — if your assessed value increases significantly, your lender will adjust the monthly payment.
Search Texas Property Records by County
Enter your property ID or address into your county CAD’s portal to access full appraisal records, ownership history, and exemption status. Here are direct links for the state’s largest counties:
- Harris County (Houston) — hcad.org
- Dallas County — dallascad.org
- Tarrant County (Fort Worth) — tad.org
- Bexar County (San Antonio) — bcad.net
- Travis County (Austin) — traviscad.org
- Collin County (Plano) — collincad.org
- Denton County — dentoncad.org
- Fort Bend County — fbcad.org
- Montgomery County — mcad-tx.org
- El Paso County — epcad.org
- Williamson County — wcad.org
- Hays County — hayscad.org
For all 254 Texas counties, use the Texas Comptroller’s CAD directory.
Texas Property Tax ID vs. Other Identifiers
| Identifier | Assigned By | What It Identifies |
|---|---|---|
| Property ID / Account Number | County CAD | Parcel in the appraisal roll |
| GEO ID | County CAD | Geographic parcel code (same parcel, different format) |
| Abstract / Survey | State General Land Office | Original land grant legal description |
| Plat Lot / Block | Recorded subdivision plat | Lot in a recorded subdivision |
| FIPS Code | U.S. Census Bureau | Texas county in federal datasets (48XXX) |
Bottom Line
Your Texas property tax ID is the gateway to your full appraisal record — value history, exemptions applied, and ownership data — all accessible for free at your county CAD’s website. Texas property tax rates are among the highest nationally, but the state’s robust exemption system (especially the homestead cap and over-65 freeze) can dramatically reduce what you owe. File your homestead exemption by April 30, watch for your Notice of Appraised Value in April, and protest by May 15 if the value seems high. Those three steps alone can save most Texas homeowners thousands of dollars per year.
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