Galveston County Property Tax: Rates & Appeal Guide (2026)

For 2026 values, the normal Galveston County property tax protest deadline was May 15, 2026, or 30 days after Galveston Central Appraisal District mailed your Notice of Appraised Value, whichever was later. Because that date has passed, the next regular deadline for most homeowners will be May 17, 2027 (May 15, 2027 is a Saturday), unless your notice gives you a later 30-day deadline.

File with Galveston Central Appraisal District (GCAD), not the County Tax Office: online at the GCAD Taxpayer Portal, by mail, or in person at 9850 Emmett F. Lowry Expressway, Ste. A101, Texas City, TX 77591. The official protest form is Texas Comptroller Form 50-132, Property Owner’s Notice of Protest; GCAD does not list a protest filing fee.

How assessments work in Galveston County

GCAD sets the taxable value side of the bill for property in Galveston County. The tax bill itself is then produced from that value multiplied by the rates adopted by the county, your school district, city, college, drainage district, MUD, ESD, or other taxing units.

The value date is January 1. GCAD’s annual report says valuations allocate the year’s tax burden based on each taxable property’s January 1 market value, and that residential values are calculated from property characteristics, a computer-assisted appraisal system, similar properties, and recent market data. Texas law requires every appraisal office to update real-property values at least once every three years; GCAD’s stated policy is a general reappraisal every three years, with values reviewed annually and subject to change for equalization and market value.

For 2025–2026, GCAD adopted a biennial reappraisal plan. GCAD reported about 211,594 total parcels for 2025 and a certified appraised market value of $78.356 billion. Its 2025 appeal data shows 74,764 appeals filed, including informal meetings and ARB proceedings, plus 253 arbitrations, 2 SOAH applications, and 118 lawsuits as of November 5, 2025. GCAD publishes appeal volume, but I did not find an official 2025 median reduction or homeowner success-rate table.

One Galveston-specific complication: your total tax rate varies a lot by location. GCAD’s 2025 tax-rate sheet lists Galveston County at 0.322660 per $100 and Galveston County Road & Flood at 0.003000 per $100, for a combined county/Road & Flood rate of 0.325660 per $100 of taxable value. Your school district and any city/MUD usually drive the larger share, so use your GCAD property record or tax bill for your exact combined rate.

Whether you should appeal

Appeal if you can prove either market value is too high or your property is unequally appraised compared with similar properties. Good Galveston County evidence includes a recent closing statement, independent appraisal, listing history showing a lower price, photos of condition problems, repair bids, flood/windstorm-related damage evidence, or sales of similar nearby homes in the same neighborhood code or subdivision.

Be careful with homesteads: the 10% appraisal cap can make the assessed value lower than market value. If your market value falls but stays above your capped assessed value, your tax bill may not change much this year. Still, a lower market value can matter in future years, especially if the cap is catching up.

Also check exemptions before protesting. GCAD lists residence homestead, disabled veteran, over-65, disabled person, and surviving-spouse exemptions. For school taxes, GCAD’s homestead page reflects the current statewide school homestead exemption of up to $140,000, and the over-65/disabled school exemption increase to $60,000 is noted in GCAD’s 2025 annual report. GCAD also states that some local jurisdictions may offer optional percentage homestead exemptions up to 20%. File homestead applications with GCAD by mail, online, or in person; action on the application is supposed to occur within 90 days after receipt.

Worked example using the county rate: suppose GCAD values your home at $420,000, but you bought it in late 2025 for $380,000 and the ARB reduces the taxable value by $40,000. Using only the Galveston County + Road & Flood rate of 0.325660 per $100, the county-level savings would be $40,000 ÷ 100 × 0.325660 = about $130.26. If your full combined local rate is, for example, around 2.1 per $100, the same reduction would save about $840; use your actual property’s combined rate for the real estimate.

Step-by-step how to file

1. Look up your property. Use GCAD property search and compare your 2026 notice, account number, market value, assessed value, exemptions, land value, improvement value, and taxing units.

2. Get the right form. Use Form 50-132, Property Owner’s Notice of Protest. GCAD’s forms page also lists Notice of Protest, Affidavit of Evidence, Request for Late Protest Hearing, Appointment of Agent, and Revocation of Agent forms.

3. Choose all protest reasons that apply. For most homeowners, check “incorrect appraised (market) value and/or value is unequal compared with other properties.” Also check exemption denial, ownership error, property description error, or other boxes if those are the real issue. Do not limit yourself to only one ground if you have more than one.

4. File before the deadline. For 2026, the standard deadline was May 15, 2026, or 30 days after the notice was mailed, whichever was later. A written protest does not have to be on the official form if it identifies the owner, the property, and dissatisfaction with a GCAD decision, but using Form 50-132 is safer.

5. Submit it correctly. GCAD says protests and evidence can be submitted in person, by mail, or via the online portal. The portal requires your Owner ID and eFile PIN from the Notice of Appraised Value; if you do not have the notice, GCAD says to email gcad@galvestoncad.org to request that information. GCAD’s informal-meetings page says only properties with a homestead exemption can protest online. Email is listed for requesting evidence, PIN help, rescheduling, and general contact, but GCAD’s protest-filing language emphasizes portal, mail, and in-person filing.

6. Mail or deliver to: Galveston Central Appraisal District, 9850 Emmett F. Lowry Expressway, Ste. A101, Texas City, TX 77591. Office hours posted by GCAD are Monday–Thursday 7:30 a.m.–5:30 p.m. and Friday 8:00 a.m.–noon.

7. Request GCAD’s evidence. Make a written HB 201 evidence request early. GCAD says you can request evidence in person, by mail, or by email to gcad@galvestoncad.org, and GCAD will email or mail its evidence at least 14 days before the scheduled hearing.

What happens after

GCAD normally starts with an informal meeting with an appraiser. For in-person protests, you bring your evidence and the appraiser may offer a settlement. For online homestead protests, the portal communication functions as the informal meeting; GCAD says an appraiser reviews your submission, shares the district’s evidence, and proposes a settlement in the portal. If you do not agree, the case moves to a formal hearing.

The appeal authority is the Galveston CAD Appraisal Review Board (ARB), also called the Galveston Central Appraisal Review Board. It is independent from GCAD and is a quasi-judicial body appointed by the Local Administrative District Judge. GCAD says ARB panels of three hear testimony and review evidence.

At the formal ARB hearing, you and a GCAD representative present evidence and answer ARB panel questions. GCAD says hearings usually last 15 to 20 minutes. You can participate by phone/videoconference, by written affidavit, or in person if requested. For phone/videoconference, GCAD says the Property Owner’s Affidavit of Evidence must be submitted 24 hours before the hearing. For an in-person formal hearing, GCAD says to bring your hearing letter and five sets of evidence.

GCAD says the ARB sends hearing notice at least 15 days before the scheduled hearing. After the hearing, the panel makes a decision, and GCAD says you should receive the Notice of Final Order by certified mail about three to four weeks later. If you disagree with the ARB order, your next options may include binding arbitration, SOAH in limited qualifying cases, or district court.

Local tips

• Do not send the protest to the Galveston County Tax Office. The Tax Office collects bills; GCAD handles value, exemptions, and protests.
• Check whether your online protest is available. GCAD’s own informal-meetings page says online protests are for homesteaded properties.
• Use neighborhood evidence. GCAD says it values residential property through neighborhood codes and market areas. A sale across the county is weaker than a similar home in your subdivision, island/west-end market, mainland city, or school district area.
• Separate land and improvement issues. Galveston County coastal and bay-area properties may have land-value pressure even when the structure is older or storm-worn. If your improvement condition is the issue, include photos, repair bids, insurance reports, or engineer/contractor notes.
• Ask for the evidence packet. The HB 201 request is one of the most useful local steps because it shows the sales and adjustments GCAD plans to use before you walk into the hearing.
• Mind late-protest rules. If you missed May 15, ask GCAD about a Request for Late Protest Hearing, but do not assume it will be granted. State guidance says late protests generally require good cause and may be unavailable after the ARB approves the appraisal records, except for specific statutory situations.

Galveston County Property Tax Rate

Galveston County county-portion total property tax rate (FY 2026): $0.325660 per $100 of taxable value, made up of $0.273660 maintenance & operations, $0.003000 flood control, and $0.049000 debt service. Actual homeowner bills may include additional city, school, college, MUD, drainage, and other taxing-unit rates depending on the property location.

Source: https://www.galvestoncountytx.gov/home/showpublisheddocument/28751/638930114068130000

When Are Property Taxes Due in Galveston County?

For 2026 property taxes, the Galveston County Tax Office lists February 1, 2027 as the last day to timely pay 2026 taxes. Split/half pay: first half of 2026 property taxes is due November 30, 2026 and the second half is due June 30, 2027. Qualified quarter-pay participants: first 1/4 installment is due February 1, 2027, second due March 31, 2027, third due June 1, 2027, and fourth/final due August 2, 2027.

This is not the same as the assessment appeal deadline above. The appeal deadline is your window to contest your assessed value; the payment due date is when the resulting tax bill must be paid. Missing one does not affect the other, but missing either has real consequences — one forfeits your right to appeal for the year, the other can trigger penalties and interest.

Source: https://www.galvestoncountytx.gov/our-county/tax-assessor-collector/tax-office-events-deadlines

Property Tax Exemptions in Galveston County

• General Residence Homestead Exemption — Owners who occupy the property as their primary residence and do not claim a residence homestead exemption on another property.. Every school district is required by the Galveston Central Appraisal District guidance to exempt up to $140,000 of assessed value; other taxing jurisdictions may grant an optional percentage homestead exemption up to 20% of total value. Yes; application required. Once granted, reapplication is generally not required unless requested by the chief appraiser or applying to a different property. Apply by Generally due no later than April 30 of the year for which the exemption is requested; late residence-homestead applications may generally be filed up to two years after the filing deadline.. (Source: https://galvestoncad.org/homestead/)
• Disabled Person Exemption — Homeowners who meet the disability definition for purposes of federal Old-Age, Survivors, and Disability Insurance benefits; GCAD also describes supporting documentation requirements such as disability determination or physician statement.. Every school district is required to exempt up to $60,000 of assessed value and place a ceiling/freeze on school-tax amount; other Galveston County jurisdictions may elect optional disabled-person exemptions. Yes; application and disability documentation required. Once granted, reapplication is generally not required unless requested by the chief appraiser or applying to a different property. Apply by Generally due no later than April 30 of the year for which the exemption is requested; late residence-homestead applications may generally be filed up to two years after the filing deadline.. (Source: https://galvestoncad.org/homestead/)
• Age 65 or Older Exemption — Property owners who are age 65 or older and use the property as their residence homestead.. Every school district is required to exempt up to $60,000 of assessed value and place a ceiling/freeze on school-tax amount; other Galveston County jurisdictions may elect optional over-65 exemptions. Yes in general, though property owners already receiving a general residence homestead exemption who turn 65 may not need to apply if accurate birthdate information is already in appraisal district/DPS records. Apply by Generally due no later than April 30 of the year for which the exemption is requested; late residence-homestead applications may generally be filed up to two years after the filing deadline.. (Source: https://galvestoncad.org/homestead/)
• Surviving Spouse of Individual Who Qualified for Age 65 or Older Exemption — A surviving spouse who was age 55 or older when the qualifying spouse died, where the property was the surviving spouse’s residence homestead at death and remains the surviving spouse’s residence homestead.. Continuation of the age-65-or-older exemption/tax ceiling for eligible surviving spouses, subject to the statutory limits and taxing-unit rules. Yes; application required unless otherwise handled by the appraisal district. Apply by Generally due no later than April 30 of the year for which the exemption is requested; late residence-homestead applications may generally be filed up to two years after the filing deadline.. (Source: https://galvestoncad.org/wp-content/uploads/2024/10/50-114_Homestead-Exemption.pdf)
• Disabled Veteran or Survivor Exemption — Texas-resident veterans classified as disabled by the VA or a U.S. armed-services branch, and qualifying surviving spouses/children of disabled veterans or U.S. armed-service members who died on active duty.. For disabled veterans, exemption amount is based on disability rating: $5,000 for 10%–29%, $7,500 for 30%–49%, $10,000 for 50%–69%, and $12,000 for 70% or higher; some qualifying disabled veterans age 65 or older, totally blind veterans, or veterans with loss of limb use may qualify for $12,000. Yes; application and VA/service-branch disability documentation required. Once allowed, the application generally does not have to be filed annually unless ownership changes or qualifications change. Apply by Generally Jan. 1 through April 30 of the tax year requested; late applications may be filed no later than five years after the delinquency date for the taxes on the designated property.. (Source: https://galvestoncad.org/wp-content/uploads/2024/10/Disabled-Veterans-or-Survivors-Exemption-Application.pdf)
• 100% Disabled Veteran Residence Homestead Exemption — Disabled veterans who receive 100% disability compensation due to a service-connected disability and have a 100% disabled rating or individual unemployability from the U.S. Department of Veterans Affairs.. Total property tax exemption on the veteran’s residence homestead, applying to all taxing jurisdictions. Yes; application and supporting documentation required. Apply by Generally due no later than April 30; late applications for the veteran may be filed up to five years after the delinquency date, and late applications for a surviving spouse may be filed up to two years after the delinquency date.. (Source: https://galvestoncad.org/homestead/)

How to Look Up Your Property Record in Galveston County

You can look up your property's official record at https://esearch.galvestoncad.org/. The official Galveston Central Appraisal District property search lets users search by owner, address, property ID, geographic ID, subdivision, tax year, and related fields for appraisal-district property records such as ownership, value, and exemption information.