Every spring, Texas property owners face one of the most important deadlines in the property tax cycle: the protest deadline. Miss it, and your options become much narrower. For 2026, the core rule is still the same statewide: in most cases, your deadline is May 15, 2026, or 30 days after the appraisal district mails your Notice of Appraised Value, whichever is later. That rule comes from Texas Tax Code Section 41.44 and is repeated in current Texas Comptroller guidance for 2026.
Why this deadline matters
A property tax protest is your formal chance to challenge an appraised value, incorrect records, exemption issues, unequal appraisal concerns, and certain other actions affecting your property. If you file on time, the Appraisal Review Board, or ARB, must hear your case. If you file late, you may still have limited remedies in some situations, but you no longer have the same straightforward right to a standard protest hearing.
What is the Texas property tax protest deadline for 2026?
For most Texas property owners, the protest deadline is May 15, 2026. But that is only half of the rule. The actual deadline is the later of:
- May 15, 2026, or
- the 30th day after the appraisal district mails your Notice of Appraised Value.
That means May 15 is the default deadline for many owners, but it is not always the final one. If your notice is mailed later in the cycle, your deadline can move beyond May 15. Several 2026 county appraisal district notices are already using this exact framework, including Bexar, Travis, Dallas, Guadalupe, and Johnson County.
The May 15 rule, simply explained
The May 15 date is the standard benchmark built into Texas law. In a typical year, many notices go out in April, so May 15 ends up being the controlling deadline for a large share of residential and commercial protests. Dallas Central Appraisal District’s 2026 protest guide,
for example, states that the deadline to file a written protest for real property for the 2026 tax year is May 15, 2026, and online protests must be submitted before midnight that day.
This is why property owners should not assume they have “plenty of time” just because they only recently opened the envelope. The safe approach is to review the notice as soon as it arrives and file early. Bexar Central Appraisal District’s 2026 notice release is already encouraging owners to submit protests as early as possible ahead of the May 15 deadline.
What the 30-day notice rule actually means
This is the part many owners misunderstand.
The 30-day rule is not based on when you happen to open the mail. It is based on when the appraisal district mails the notice. The Texas Comptroller’s protest page notes that while the general explanation often refers to the notice’s delivery date, the deadline is 30 days from the date the appraisal district mails the notice, not from the day you physically receive it.
In practical terms, that means the mailing date printed on your Notice of Appraised Value is critical. If the district mails your notice after April 15, your 30-day deadline will usually fall after May 15, so the later date controls. Johnson County’s 2026 protest procedures spell this out clearly by stating that the protest deadline is the later of May 15, 2026 or 30 days after your notice is mailed, and that the mailing date is clearly printed on the notice.
A few quick examples
- If your notice was mailed on April 8, 2026, 30 days later would be May 8, 2026. In that case, the later deadline is May 15, 2026.
- If your notice was mailed on April 25, 2026, 30 days later would be May 25, 2026. In that case, your deadline would be May 25, 2026, not May 15.
- If your notice was mailed on May 2, 2026, 30 days later would be June 1, 2026. In that case, the 30-day rule pushes your deadline past May 15. This is exactly why owners should check the date on the notice instead of relying on a generic deadline. The controlling legal rule remains “May 15 or 30 days after mailing, whichever is later.”
Latest 2026 update: notices are already going out
For 2026, appraisal notices are already being released across Texas. Travis CAD announced that 2026 market values were going online in late March and that more than 427,000 property owners would receive notices by mail, with the protest deadline being May 15 or 30 days after the notice is mailed, whichever is later. Bexar CAD likewise announced in April that 2026 notices were being mailed and reminded owners that they can
still protest even if they do not receive a notice.
At the state level, the Texas Comptroller has also continued updating property tax materials, forms, publications, and web content in 2026 to reflect changes from the 89th Legislature. Even with those broader updates, the core protest deadline guidance being published for owners in 2026 still points back to the same rule: May 15 or 30 days after mailing, whichever is later.
How to file a protest in Texas
Texas property owners commonly file using Form 50-132, Property Owner’s Notice of Protest, though the Comptroller says a protest does not have to be on that form as long as the writing identifies the property owner, the property, and shows dissatisfaction with the appraisal district’s action. Filing options often include online, mail, and in-person delivery, but exact methods vary by county. Dallas CAD, for example, allows online filing for many
protests but states that fax and email protest filings are not accepted.
That is why the best practice is simple: file according to the instructions on your own notice. Do not assume every county accepts the same methods or has the same portal rules. Some districts list eFile PINs, some require portal authentication, and some impose cutoffs tied to office closing times for in-person submissions and midnight deadlines for online filings.
What should owners do as soon as the notice arrives?
Start with the basics. Check the mailing date, the appraised value, the property details, and any exemptions reflected on the notice. Then compare the value against comparable sales, condition issues, market trends, income data for commercial property, or unequal appraisal concerns. Travis CAD’s 2026 guidance also notes that owners who use the online portal may be able to upload evidence, review district evidence, review offers, and attend informal meetings or formal hearings through their account.
For many owners, filing early is smart even if they are still building evidence. A timely protest preserves your rights. You can continue gathering support afterward. Texas Comptroller guidance also notes that after filing, you should receive written notice of your ARB hearing, and the ARB generally must give at least 15 days’ notice before the hearing.
What if you miss the deadline?
Missing the ordinary deadline does not always mean every remedy is gone, but it does mean the easy path is gone. The Texas Comptroller says the ARB may grant a late protest hearing for good cause if the protest is filed after the normal deadline but before the appraisal records are approved. The Comptroller also lists specific late-filed remedies, including protests for failure to receive a required notice and certain motions to correct over-appraisal or clerical errors.
That said, these are exceptions, not a strategy. The safer move is always to file on time. Once appraisal records are approved, your options narrow fast, and some late remedies come with additional conditions, including payment requirements and pre-delinquency deadlines.
Final takeaway for Texas property owners in 2026
The 2026 Texas protest deadline is straightforward once you know what to look for:
Your deadline is May 15, 2026, or 30 days after your Notice of Appraised Value was mailed, whichever is later.
The most important detail is the mailing date on the notice itself. That date can move your deadline beyond May 15. So do not rely on memory, rumors, or a neighbor’s date. Read your notice, calendar the deadline immediately, and file early enough to protect your right to challenge the value.
If you are reviewing your 2026 appraisal notice and are unsure whether the value is fair, getting the timeline and filing strategy right can make a real difference. Alamo Ad Valorem works with Texas property owners to help them navigate the protest process with clarity and confidence.