Central Time (CT) on the due date to be considered timely. Central Time (CT) on the due date.In Texas, you will always have to submit your returns on or before the 20th of the month following your reporting period. Jan. 31: Last day to pay your property taxes without incurring financial penalties and interest charges. January 29 is also the payment due date for any additional courses or changes to your record that created an additional bill for Spring 2025. To pay in full, click the appropriate payment portal above.