Tex. Tax Code § 171.255

(a) If the corporate privileges of a corporation are forfeited for the failure to file a report or pay a tax or penalty, each director or officer of the corporation is liable for each debt of the corporation that is created or incurred in this state after the date on which the report, tax, or penalty is due and before the corporate privileges are revived. The liability includes liability for any tax or penalty imposed by this chapter on the corporation that becomes due and payable after the date of the forfeiture.

(b) The liability of a director or officer is in the same manner and to the same extent as if the director or officer were a partner and the corporation were a partnership.

(c) A director or officer is not liable for a debt of the corporation if the director or officer shows that the debt was created or incurred:

(1) over the director's objection; or

(2) without the director's knowledge and that the exercise of reasonable diligence to become acquainted with the affairs of the corporation would not have revealed the intention to create the debt.

(d) If a corporation's charter or certificate of authority and its corporate privileges are forfeited and revived under this chapter, the liability under this section of a director or officer of the corporation is not affected by the revival of the charter or certificate and the corporate privileges.