The Harris County Appraisal District and the Montgomery County Appraisal District both assess property taxes under Texas Tax Code §41.41, and both use May 15 as the standard protest deadline — or 30 days from the date of your notice, whichever is later.
From there, the similarities narrow quickly, and the differences are exactly the kind of detail that determines whether your protest is evaluated on its merits or worked around by process.This matters because most general guides treat Texas protest rules as uniform.
They're not. Each county appraisal district sets its own procedures, operates its own filing portal, constitutes its own Appraisal Review Board, and applies its own informal settlement process. A packet built for HCAD's workflow may not be optimized for MCAD's — and vice versa.The Filing Portal Is Just the StartBoth HCAD (hcad.org) and MCAD (mcad-tx.org) accept online protests, which puts them ahead of many Texas counties.