The Tax Code states that notices of protest must be filed before May 1 or no later than the 30th day after notices of appraised value are delivered, but there is some flexibility.  “If an owner of a single-family residence files a notice of protest after the deadline, but before June 1 and the ARB (Appraisal Review Board) has not approved the appraisal records, then the owner is entitled to a hearing and determination of the protest”.   Homeowners who have questions can email PTAD or call 800-252-9121 (press “2” for the menu, then “1” to contact the information services team),