(a) A municipality shall pay the amounts prescribed by the contract from any available funds, including property taxes.
(b) To pledge property taxes as part or all of the required payments under the contract, before it enters into a contract with an authority a municipality must obtain voter approval at an election conducted substantially according to the applicable procedures in Chapter 1251, Government Code. Each qualified voter in the municipality is entitled to vote in the election. If the voters authorize the payments from property taxes, the contract may provide that the payments are payable from and are obligations against only the taxing power of the municipality or may provide that the payments are payable from taxes and other funds and revenues specified in the contract. After the election and concurrently with, or prior to, making the contract, the municipality shall provide for the annual assessment and collection of an amount that is sufficient to make the contract payments and to create a sinking fund of at least two percent.

(c) An authority or a holder of authority bonds may not demand payment of the municipality’s obligation out of funds raised by taxation if the municipality has not complied with Subsection (b).