Texas Tax Code - TAX § 156.202. Penalty

(a) If the person who is required to pay to the comptroller the tax imposed by this chapter fails to file a report or does not pay the tax when it is due, the person shall forfeit to the state a penalty of five percent of the amount of tax due.

(b) If the person who is required to pay the tax to the comptroller does not pay the tax within 30 days after it is due, the person shall forfeit to the state a penalty of an additional five percent of the amount of tax due.

(c) The minimum penalty under Subsections (a) and (b) is $1.

(d) In addition to any other penalty authorized by this section, a person who fails to file a report as required by this chapter shall pay a penalty of $50. The penalty provided by this subsection is assessed without regard to whether the taxpayer subsequently files the report or whether any taxes were due from the taxpayer for the reporting period under the required report.