Every year, Texas appraisal districts assess millions of properties — and millions of homeowners overpay because they assume fighting it is too complicated, or they simply miss the window. The deadline is the single most consequential date in the protest process. Once it passes, your options to reduce that year's tax bill effectively disappear.
This article breaks down exactly how the deadline works under Texas Tax Code Chapter 41, what triggers a different date, and what constitutes a valid filing so you don't lose your right to protest on a technicality.
The Two-Part Deadline Rule
Texas law gives you the later of two dates:
A property owner must file a notice of protest before June 1 or not later than the 30th day after the date the written notice required by Section 25.19 is delivered to the property owner, whichever is later.
In practice, most appraisal districts mail notices in April, making May 15 the operative deadline for the vast majority of homeowners (it's the later of May 15 or 30 days from a mid-April mailing). But if your district mails late — or if you never received a notice — the 30-day clock from the mailing date may push your personal deadline into June.
- Look at the Notice of Appraised Value your district mailed. The date on that letter is the start of your 30-day clock.
- Check your appraisal district's website — most post the notice mailing date for each year.
- When in doubt, file by May 15. That is always safe regardless of when your notice arrived.
2026 Texas Property Tax Calendar
What Counts as a Valid Filing
Filing on time is necessary, but you also need to file correctly. A late or defective filing is treated the same as no filing at all.
Methods the ARB accepts
- Online portal — most districts now offer e-filing through their website or iFile system. Instant confirmation; recommended.
- In person — deliver Form 50-132 to the appraisal district office by 5:00 PM on the deadline date.
- Certified mail — postmark by the deadline. Keep the certified mail receipt and the green return-receipt card. First-class mail with no postmark evidence is risky.
- Fax or email — only if your specific district accepts these methods. Check their website before relying on this.
What the protest form must include
Form 50-132 (Notice of Protest) is straightforward — one page. At minimum you need: your name, property address, account number from your notice, the grounds for protest (market value, unequal appraisal, or both), and your signature. You do not need evidence at this stage. Evidence is for the hearing.
What Happens If You Miss the Deadline
The consequences are straightforward: you pay taxes based on whatever value the appraisal district assigned. There is no administrative appeal path once the deadline passes.
There are two narrow statutory exceptions under Texas Tax Code § 41.411:
1. Failure to deliver notice
If the appraisal district failed to send you a required notice, you can file a protest within one year of the delinquency date of the taxes (typically January 31 of the following year). This requires showing the notice was never sent — not that you didn't receive it, but that it was never mailed to the correct address on record.
2. Clerical error producing a substantial overvaluation
If the district made a clerical error (entering the wrong square footage, for example) that caused a materially incorrect appraisal, you may have grounds for a late correction request under § 25.25. This is distinct from a standard protest and has different procedures.
Special Situations That Affect Your Deadline
You never received your notice
Your 30-day window runs from the date the district mailed the notice — not the date you received it. If the district mailed to the correct address and you never got it (it was lost or stolen), you still face the standard deadline. Check your district's portal early each spring, before notices arrive, so you know your appraised value and can file proactively.
You bought the property after January 1
The assessed value was set on January 1, before you owned it. As the new owner, you still have the right to protest — the deadline is the same as for any other owner. File under your name using the new ownership information.
Your property has agricultural, wildlife, or open-space valuation
Special-use valuations (1-d-1 ag, wildlife management, timber) have their own application and protest timelines. The May 15 protest deadline applies to the assessed value, but eligibility determinations have a separate April 30 application deadline.
Weekend or holiday
If May 15 falls on a Saturday, Sunday, or state or federal holiday, the deadline moves to the next business day. In 2026, May 15 is a Friday — no adjustment needed.
- Find your Notice of Appraised Value (check mail and district portal)
- Identify the mailing date — your deadline is 30 days from that date or May 15, whichever is later
- File Form 50-132 online, in person, or by certified mail before the deadline
- Save your confirmation number or certified mail receipt
- Gather comparable sales and evidence — you have until your hearing date
Filing vs. Winning: Don't Confuse Them
Filing a protest is free, takes five minutes online, and preserves your right to fight the appraisal. You can always settle at an informal hearing or withdraw before the formal ARB hearing if you decide it's not worth pursuing.
Many homeowners who successfully reduce their taxes start with little more than a timely-filed form and three comparable sales pulled from the district's own database. The filing is the gate. Don't miss it.
If you'd rather have a professional handle the filing, the ARB hearing, and any appeal — with no fee unless you win — that's what Texas Tax Lock does.
Frequently Asked Questions
The standard deadline is May 15, 2026. If your appraisal district mails your Notice of Appraised Value after April 15, your personal deadline may be later — specifically 30 days from the date on your notice. The later date controls.
You generally cannot protest that year's value. You'll owe taxes based on the appraisal district's original figure. Narrow exceptions exist for failure-to-deliver-notice situations under Tax Code § 41.411, but illness, travel, and ignorance of the deadline are not valid grounds for a late filing.
Yes — if it is postmarked by the U.S. Postal Service on or before the deadline. Use USPS Certified Mail with a Return Receipt for proof. First-class mail with no tracking is risky; there's no reliable way to establish the postmark after the fact.
Only in very limited circumstances. Texas Tax Code § 41.411 allows a late protest if the appraisal district failed to deliver a required notice. You have until one year after the delinquency date. Other grounds (personal hardship, illness, travel) are not recognized by statute.
No. You can file a protest even if your notice hasn't arrived — or if it never came. As long as you file by May 15 (or 30 days from the mailing date if later), your protest is valid. Check your appraisal district's online portal for your current appraised value.