How to Appeal Property Taxes in Williamson County, Texas (2026 Guide)

For most Williamson County homeowners, the 2026 property tax protest deadline was Friday, May 15, 2026, or 30 days after the mail date on your Notice of Appraised Value, whichever is later. File free with Williamson Central Appraisal District (WCAD) online using the passcode on your notice, or by mail/in person at 625 FM 1460, Georgetown, TX 78626-8050. WCAD says no faxed or emailed protests are accepted.

How assessments work in Williamson County

Williamson County property values are set by Williamson Central Appraisal District, not the County Tax Assessor-Collector. WCAD values taxable property at 100% market value as of January 1 each year using standardized mass appraisal methods and property characteristics such as location, size, age, quality, and condition.

Your 2026 notice may show several numbers. The one you usually protest is Total Market Value. If you have a residence homestead exemption, your Assessed Value may be lower because of the Texas homestead cap: after the cap is in effect, the taxable assessed value generally cannot rise more than 10% per year, plus new improvements. WCAD explains that the cap starts after you have owned and occupied the home for the required full calendar-year cycle; a 2024 move-in, for example, may first receive the cap for 2026.

The 2026 assessment cycle works like this: values are measured as of January 1, 2026; notices are issued in spring; protests are filed by May 15 or 30 days after the notice mail date; hearings run generally from April through July; the Appraisal Review Board is expected to approve appraisal records around July 20; local tax rates are proposed and adopted later, generally during August and September; tax bills usually arrive in October and are due by January 31 of the following year.

A Williamson County-specific wrinkle: Texas is a non-disclosure state. WCAD may use sales information it obtains, but it does not automatically have every private sale price. If you bought recently, your closing statement can be powerful evidence.

Whether you should appeal

Appeal if you can prove one of these with documents:

1. Market value is too high. Your home would not have sold for WCAD’s value on January 1, 2026. Best evidence: a 2025 or early-2026 closing statement, fee appraisal, signed contract, or comparable sales adjusted for size, condition, age, and neighborhood.
2. Unequal appraisal. Similar homes are appraised lower than yours after reasonable adjustments. WCAD’s online protest materials include comparable sales and equity-comparable reports; use homes that match your subdivision, school area, size, build year, and condition.
3. Property data is wrong. Check WCAD’s property record for living area, land size, pool, garage, quality, condition, and exemptions. A wrong square footage or condition rating can matter more than a generic “taxes are too high” argument.
4. Your exemption is missing or denied. First-time homeowners should verify the HS homestead code on the notice or WCAD property search.

Do not appeal just because your tax bill feels high. The ARB and WCAD staff cannot change tax rates or tax collection. They can address value, exemptions, ownership, situs, and other appraisal-record issues.

WCAD publishes appeal counts, but not a median dollar reduction. In its 2025 annual report, WCAD reported 5,283 ARB hearings, with 2,414 value changes and 2,862 dismissals/no value change. That is useful context, not a promise: many protests settle before a formal ARB decision, and outcomes depend on evidence.

Step-by-step how to file

1. Read the deadline on your notice. The standard 2026 deadline was May 15, 2026. If your Notice of Appraised Value was mailed later, your deadline is 30 days after that mail date.

2. Choose the right form. You can file using:

• the Notice of Protest included with your WCAD appraisal notice;
• Texas Comptroller Form 50-132, Property Owner’s Notice of Protest;
• or a signed written statement identifying the owner, property, and reason for protest.

Your protest must include the owner name, property identification such as QuickRefID/account number or address, and the reason for protest. This matters because WCAD staff and the ARB are limited to the reasons you selected.

3. File free by an accepted method.

• Online: Use WCAD’s online appeals system with the QuickRefID and Online Protest Passcode from your notice. WCAD says online protests are mainly set up for market value and unequal-appraisal protests and may qualify for early scheduling or an online settlement offer.
• Mail: Williamson Central Appraisal District, 625 FM 1460, Georgetown, TX 78626-8050. The envelope must be postmarked by the deadline; WCAD warns that dropping it in a USPS box does not guarantee a timely postmark.
• In person: Same address, before WCAD closes at 5:00 p.m. on the deadline.
• Email/fax: Not accepted for filing a protest.

There is no fee to file a protest.

4. Upload or gather evidence. If you filed online, use the Manage Documents feature. For in-person evidence, WCAD accepts physical evidence and certain storage devices; it says evidence on a personal phone, tablet, or laptop is not admissible. Useful residential evidence includes a settlement statement, current appraisal, comparable sales, dated photos, repair estimates for problems existing before January 1, construction cost documents, survey, or deed documents.

5. Ask for WCAD’s evidence package. If you want the information WCAD plans to use at the hearing, request it at least 14 days before the hearing under Tax Code Section 41.461 through WCAD’s E-Services form, by mail, or in person.

What happens after

If you file online, WCAD may show an appraisal review and settlement offer. If you accept, the protest is finalized for 2026. If you reject it or the offer expires, the case moves toward ARB scheduling.

The appeal authority is the Williamson County Appraisal Review Board (ARB), an independent group separate from WCAD. WCAD’s 2026 process overview says hearings are generally scheduled April through July, Monday through Thursday, 8 a.m. to 5 p.m. The Notice of Hearing is sent at least 15 days before your hearing and includes the date, time, location, protest reason, ARB procedures, taxpayer pamphlet, and preparation guide.

On your scheduled date, WCAD says both steps happen: first an informal review with district staff, then—if no agreement is reached—a formal ARB hearing. Each part is kept to about 15 minutes. A typical ARB panel has three members. You present evidence, WCAD presents evidence, the panel deliberates, and the ARB determines the issues you protested. The ARB’s determination finalizes the protest for that tax year unless you pursue a further appeal.

If you cannot appear in person, you may request a virtual or telephone hearing in writing. Owners generally must request it at least five days before the hearing; agents or representatives generally must request it at least 10 days before. For telephone hearings and affidavit-only presentations, use Comptroller Form 50-283, Property Owner’s Affidavit of Evidence, or a notarized affidavit with your evidence. WCAD lists Affidavits@wcad.org for affidavit evidence and Agents@wcad.org for authorization forms, but those emails are not substitutes for filing the original protest.

Local tips

Check exemptions before fighting value. WCAD says exemption applications are free and generally do not require annual reapplication. Key items for homeowners: general residence homestead, over-65, disabled person, 100% disabled veteran/surviving spouse, and local optional exemptions. Texas school districts now provide a $140,000 school residence homestead exemption, and Williamson County’s own local options have included county homestead and over-65/disabled deductions, so verify what appears on your property record.

Recent buyers should use Express Review logic. WCAD has a specific “Express Review for New Property Purchases” path when a 2026 proposed market value is higher than a recent purchase price. Have the closing disclosure or settlement statement ready.

Argue value as of January 1, not today. A roof leak photographed in June helps only if you can show the condition existed before January 1, 2026. A sale from late spring 2026 may be less persuasive than a late-2025 or early-2026 comparable.

Savings example using the county’s actual adopted rate. Williamson County adopted a 2025 county tax rate of $0.413776 per $100 of value. If a Georgetown homeowner reduces taxable value by $50,000, the county-only savings would be: $50,000 ÷ 100 × 0.413776 = $206.89. Your total bill savings may be much larger because school, city, MUD, ESD, road, or other taxing units also apply—but 2026 rates are not finalized until later in the year, so use your property’s actual taxing units before estimating total savings.

If you missed May 15. Do not assume all options are gone. A late protest may be possible only in limited circumstances, such as good cause before the ARB approves the records, or other specific Texas Tax Code remedies. File immediately and explain the reason in writing to the ARB.