Texas property tax protest deadline (2027)
In Texas, a property owner protests an appraised value by filing a written notice of protest with the appraisal review board (ARB). The general deadline is in Tax Code §41.44(a)(1). FactLot computes it from the statute text, rolls it past weekends and legal holidays, and cites the sections it relied on.
General deadline by tax year
These dates assume the notice of appraised value was delivered early enough
that May 15 is the later date. The table is computed by FactLot's rule
rules.tx.property_tax_protest_deadline@1 when this page is built.
| Tax year | Statutory deadline | Conservative file-by date | Why |
|---|---|---|---|
| 2027 | Monday, May 17, 2027 | Friday, May 14, 2027 | May 15 falls on a Saturday; skipped 2027-05-15 (Saturday), 2027-05-16 (Sunday) |
| 2028 | Monday, May 15, 2028 | Monday, May 15, 2028 | May 15 is a business day |
| 2029 | Tuesday, May 15, 2029 | Tuesday, May 15, 2029 | May 15 is a business day |
"Statutory deadline" is the last day a notice of protest is timely under the general rule. "Conservative file-by date" is the latest business day on or before the unadjusted date, for filers who do not want to rely on the weekend and holiday rollover.
How the deadline is set
- The later of two dates. Under §41.44(a)(1) the notice of protest is due by May 15, or by the 30th day after the appraisal district delivered the notice of appraised value, whichever is later. A mailed notice is presumed delivered on the day it was deposited in the mail (§1.07(c)).
- Weekends and holidays. When the last day falls on a Saturday, Sunday or a legal state or national holiday, §1.06 (as amended by H.B. 1392, effective January 1, 2026) makes the act timely on the next regular business day. The holiday list comes from Government Code §662.003; optional holidays under §662.003(c) are not counted as legal holidays.
- Commercial property. The general deadline is the same for commercial, industrial and residential property.
What the rule does not cover
The rule computes the general deadline only. It does not cover the other deadlines in §41.44(a)(2) through (5), corrections under §25.25, late-protest relief under §41.44(b) through (c-3), or how a particular appraisal district or ARB handles filings in practice. Check the notice you received and the appraisal district's own instructions. This page is information, not legal or tax advice, and it is not a substitute for the advice of an attorney.
Check a specific notice
If the notice of appraised value arrived late in April or later, the 30-day
basis can move the deadline past May 15. An agent can compute the deadline for
a specific delivery date with the
rules_tx_property_tax_protest_deadline tool (inputs
tax_year and notice_delivered_date) over
MCP or REST:
curl -s https://api.factlot.com/v1/rules/tx_property_tax_protest_deadline \
-H 'content-type: application/json' \
-d '{"tax_year":2027,"notice_delivered_date":"2027-04-28"}'The result names the governing basis (May 15 or the 30-day rule), every skipped weekend day or holiday, the statute citations, and the rule's version.
Comparing a property with comparable properties
For an unequal-appraisal comparison, the
calc_tx_unequal_appraisal calculator does the arithmetic of Tax
Code §41.43(b)(3) and §42.26(a)(3): each comparable's value, normalized by
area if asked and adjusted by the amounts and reasons the user supplies, then
the median of the adjusted values and the subject's value minus that median.
The user chooses the comparables and every adjustment; the tool chooses
neither. Self-hosted FactLot with a Texas registry file can also list
candidate comparables from the appraisal roll
(registry_tx_equity_candidates), without owner information.
These are evidence calculations: not an appraisal or an opinion of value, not legal or tax advice, and not a substitute for the advice of an attorney. They do not say whether to protest, what value to ask for, or how a hearing may go, and FactLot does not represent property owners. To file, use the appraisal district's own protest process, yourself or through a property tax consultant registered with the Texas Department of Licensing and Regulation, or an attorney. See the calculators.
Sources
Checked against the official statute text on Monday, November 2, 2026. The Texas Legislature meets in regular session from January 2027 and can change these sections; the rule and this page are re-checked after the session.