Texas Tax Code - TAX § 171.362. Penalty for Failure to Pay Tax or File Report

(a) If a taxable entity on which a tax is imposed by this chapter fails to pay the tax when it is due and payable or fails to file a report required by this chapter when it is due, the taxable entity is liable for a penalty of five percent of the amount of the tax due.

(b) If the tax is not paid or the report is not filed within 30 days after the due date, a penalty of an additional five percent of the tax due is imposed.

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

(d) If a taxable entity electing to remit under Section 171.202(c)(2)(A) remits less than the amount required, the penalties imposed by this section and the interest imposed under Section 111.060 are assessed against the difference between the amount required to be remitted under Section 171.202(c)(2)(A) and the amount actually remitted on or before May 15.

(e) If a taxable entity remits the entire amount required by Section 171.202(c), no penalties will be imposed against the amount remitted on or before November 15.

(f) In addition to any other penalty authorized by this section, a taxable entity 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 taxable entity subsequently files the report or whether any taxes were due from the taxable entity for the reporting period under the required report.