Collin County Property Tax Bills Arrive in the Fall

The Collin County Tax Assessor-Collector collects property taxes for the county and other local taxing units. The Tax Office says property tax statements are mailed in October and are due when received.

The no-penalty date can be year-specific, so check the Tax Office page instead of relying on an old bill or memory. As of the county's 2026 property tax page, the posted penalty cutoff was January 31, 2026.

You can pay online, by mail, or at one of the county Tax Office locations. If your mortgage company escrows taxes, still check the account lookup before the deadline so a missed escrow payment does not become your problem.