Texas Tax Code - TAX § 33.54. Limitation on Actions Relating to Property Sold for Taxes

(a) Except as provided by Subsection (b), an action relating to the title to property may not be maintained against the purchaser of the property at a tax sale unless the action is commenced:

(b) If a person other than the purchaser at the tax sale or the person's successor in interest pays taxes on the property during the applicable limitations period and until the commencement of an action challenging the validity of the tax sale and that person was not served citation in the suit to foreclose the tax lien, that limitations period does not apply to that person.

(c) When actions are barred by this section, the purchaser at the tax sale or the purchaser's successor in interest has full title to the property, precluding all other claims.