Central Texas
|Last reviewed: August 2026Williamson County Ag Exemption Requirements
Property tax exemption requirements and resources for Williamson County, Texas. Below you'll find the rules for each exemption type, the filing deadline, and your local appraisal district contact information.
Appraisal District
Williamson Central Appraisal District
625 FM 1460, Georgetown, TX 78626
Available exemptions
Agricultural
Livestock, crops, hay, and general farming operations.
Requirements
- Apply by April 30
Qualifying uses
Minimum 2 animal units required. Geographic area determines acres needed to meet animal unit minimum. Online Animal Estimator tool available on WCAD website.
Wildlife Management
Native habitat management on land with existing ag valuation.
Requirements
- Requires existing ag valuation
- 3 management practices required
Must have had ag valuation for at least 5 of the previous 7 years before converting to wildlife.
Beekeeping
Honey bee operations as a qualifying agricultural use.
Requirements
- Minimum 5 acres
- Minimum 6 hives
6 colonies minimum on 5 acres. 1 additional hive per 2.5 additional acres. Maximum 20 acres.
Timber
Managed timber production on qualifying acreage.
Not a primary timber-producing region.
Learn more about each exemption
Conservation easements in Williamson County
Significant development pressure along the I-35 corridor. Agricultural and ranch lands at risk of fragmentation. Conservation easements are a separate instrument from property tax exemptions - they generate a federal income tax deduction by permanently restricting development rights. Most landowners benefit from both an exemption and an easement.
Williamson County agricultural profile
Stocking rates & intensity standards
East of IH-35: improved pasture 4 acres/AU, native pasture 5 acres/AU (minimum 2 AU = 8-10 acres). West of IH-35: improved pasture 8 acres/AU, native pasture 9 acres/AU (minimum 2 AU = 16-18 acres).
WCAD publishes a free Animal Unit Estimator tool online that calculates exact minimum acreage based on pasture type and location relative to IH-35. New applications require an office review, property inspection, and final determination. Applications available via WCAD's e-services portal.
How to apply
To apply for a property tax exemption in Williamson County, contact the Williamson Central Appraisal District directly. The standard application deadline is April 30 of each year, though late applications may be accepted until the appraisal review board approves the appraisal records.
The primary application form is Form 50-129 (Application for 1-d-1 Agricultural Use Appraisal), available from the Williamson Central Appraisal District website or the Texas Comptroller's office.
If the use of your land changes, you may face a rollback tax - the difference between what you paid under the special valuation and what you would have paid at market value, for the 3 years preceding the year of the change. The change-of-use year itself is not included, and for 1-d-1 open-space land no interest is added to the rollback.
Estimated savings in Williamson County
Average tax rate: 1.65% - Market value: $7,203/ac - Ag value: $185/ac
Per-acre values are regional averages, not Williamson County appraisals. Use them for a rough estimate only.
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Need help with your application?
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