The deadline for paying 2025 property taxes in Collin County is approaching quickly, and county officials are reminding property owners that payments must be made by Jan. 31, 2026, to avoid penalties and interest.

Property tax payments not received by the deadline will accrue penalty and interest charges on the unpaid balance beginning Feb. 1, a cost that can be significant for many taxpayers. The Collin County Tax Assessor-Collector’s Office stressed the importance of meeting the deadline to prevent additional charges.

Taxpayers who choose to mail their payments should pay close attention to how the U.S. Postal Service applies postmarks. Payments are credited based on the postal service postmark date, not when a payment is placed in a mailbox. Changes in USPS postmarking procedures could result in a later postmark date than expected, potentially leading to penalty and interest if the postmark is after Jan. 31. To ensure timely postmarks, residents may visit a post office counter and request a manual postmark or send payments via registered or certified mail, which provides a mailing receipt and tracking for proof of timely submission.

Collin County also provides convenient options for paying property taxes online or by phone. Property owners can make payments through the Collin County tax office’s website using an electronic check, often without an additional fee, or by credit or debit card, which may involve a convenience fee from the card processor. Payments can also be made by phone through the county’s automated system.

Online payment options allow residents to avoid in-person visits and long lines at the tax office, particularly as the Jan. 31 deadline draws nearer. The county’s tax website provides information on how to access payment services and view account details.

The Collin County Tax Assessor-Collector’s Office, led by tax assessor-collector Scott Grigg, is located at 2300 Bloomdale Road in McKinney. Residents with questions about their property tax bills, payment options, or deadlines may contact the office by phone at (972) 547-5014 or by email at [email protected]. Additional information and services are available on the Collin County official website.

Property owners are encouraged to act early to make timely payments and avoid the added costs that come with late payments. Timely payment also ensures that essential public services funded by property taxes, such as schools, roads and emergency services, continue without interruption. 

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