(a) Except as otherwise provided, a penalty of five percent of the tax due shall be imposed on a person who fails to pay a tax imposed or file a report required by Title 2 or 3 of this code when due, and, if the person fails to file the report or pay the tax within 30 days after the day on which the tax or report is due, an additional five percent penalty shall be imposed.
(b) Except where another penalty for fraud or intent to evade the tax is specifically provided, an additional penalty of 50 percent of the tax due shall be imposed if it is determined that:
(1) the failure to pay the tax or file a report when due was a result of fraud or an intent to evade the tax; or
(2) the taxpayer alters, destroys, or conceals any record, document, or thing, or presents to the comptroller any altered or fraudulent record, document, or thing, or otherwise engages in fraudulent conduct, for the apparent purpose of affecting the course or outcome of an audit, investigation, redetermination, or other proceeding before the comptroller.

(c) The penalties provided by Subsection (b) are intended to be remedial in nature and are provided for the protection of state revenue and to reimburse the state for expenses incurred as a result of fraud, including expenses incurred in conducting an investigation.