Tex. Labor Code § 203.256

(a) The commission shall assess an unemployment obligation assessment annually on each employer entitled to an experience rating under Chapter 204 if any bonds issued under this subchapter are outstanding.

(b) With regard to outstanding bonds issued by the authority under this subchapter, the authority shall notify the commission of the amount of the bond obligations and the estimated amount of bond administrative expenses each year in sufficient time, as determined by the commission, to permit the commission to assess the annual rate of the unemployment obligation assessment, subject to verification by a financial advisor of the commission or as otherwise specified in the proceedings authorizing the bonds.

(c) The commission shall deposit all revenue collected from the unemployment obligation assessment into the obligation trust fund. Money deposited in the fund may be invested as permitted by general law. Money in the obligation trust fund required to be used to pay bond obligations and bond administrative expenses shall be transferred to the authority or used by the commission in the manner and at the time specified in the resolution adopted in connection with the bond issue to ensure timely payment of obligations and expenses, or as otherwise provided by the bond documents.

(d) For bonds issued by the authority for the commission, the commission shall provide for the payment of the bond obligations and the bond administrative expenses by irrevocably pledging revenues received from the unemployment obligation assessment and amounts on deposit in the obligation trust fund, together with any bond reserve fund, as provided in the proceedings authorizing the bonds and related credit agreements.