Tex. Local Government Code § 303.042

(a) A public facility, including a leasehold estate in a public facility, that is owned by a corporation and that, except for the purposes and nonprofit nature of the corporation, would be taxable to the corporation under Title 1, Tax Code, shall be assessed to the user of the public facility to the same extent and subject to the same exemptions from taxation as if the user owned the public facility. If there is more than one user of the public facility, the public facility shall be assessed to the users in proportion to the value of the rights of each user to occupy, operate, manage, or use the public facility.

(b) The user of a public facility is considered the owner of the facility for purposes of the application of:

(1) sales and use taxes in the construction, sale, lease, or rental of the public facility; and

(2) other taxes imposed by this state or a political subdivision of this state.

(c) Subject to Section 303.0421(h), a corporation is engaged exclusively in performance of charitable functions and is exempt from taxation by this state or a municipality or other political subdivision of this state. Bonds issued by a corporation under this chapter, a transfer of the bonds, interest on the bonds, and a profit from the sale or exchange of the bonds are exempt from taxation by this state or a municipality or other political subdivision of this state.