Harris County Property Tax Protest Deadline & 2026 Calendar
- Below is a 2026 calendar for protesting your Harris County property taxes with the Appraisal Review Board.
- Dates in green are open
- Dates in red have passed
- Dates in gray are estimated based on previous years
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Assessment Date
2026 Tax Bills Due
Apply for a Homestead Exemption
Value Notices Issued
Protest Deadline
Tax Rates Determined
2026 Tax Bills Issued
January 1, 2026
January 31, 2026
Between January 1 and April 30
Between April and May 2026
May 15 2026 or 30 Days after notices issued
Between September and October 2026
Between October and November 2026
Over 90% Success Rate on Property Tax Appeals & Protests
No Up-Front Fees