Deadline to File a Protest
Short answer: May 15th
The deadline to file a protest each year is May 15th or 30 days after you receive your Notice of Appraised Value – whichever is LATER. That means if you received your Notice of Appraised Value by April 15th, you have until May 15th to file. The deadline to file for a notice received on May 15th is June 14th, etc. If may 15th falls on a weekend or holiday, then the deadline is moved to the next business day.
Some Appraisal Districts print misleading deadlines in order to get people to file protests earlier and to discourage people from filing after a certain date. However, State law requires that those districts accept all protests filed by the actual May 15th deadline.
Other important deadlines are:
Date of appraisal of the property for that tax year
Deadline to pay your tax bill (for tax bills received prior to January 10th)
Deadline to file for Homestead & Over 65 exemptions for the previous tax year
Last day to file Business Personal Property Renditions and property information reports
Deadline to file annual exemption applications
Deadline to file for 1-d and 1-d-1 agricultural land special appraisal
For more information:
Texas Protax FAQ