(a) In the ordinance designating an area as a public transportation financing area, the municipality must:
(1) designate a portion or amount of the tax increment to be paid to the authority and deposited in the tax increment account under § 460.606; and
(2) state whether the tax increment will be generated from ad valorem tax revenue, sales and use tax revenue, or both.
(b) The amount designated for payment and deposit may not exceed the equivalent of the amount that would be collected by the authority if the municipality had authorized the authority’s sales and use tax levy.

(c) Notwithstanding Subsection (b), if the amount designated under Subsection (b) is not sufficient to compensate the authority for the maintenance and operating expenses of providing service to the public transportation financing area and for any capital cost incurred for the benefit of the public transportation financing area, the authority may request and the municipality shall designate that the entire portion or amount of the tax increment be deposited in the tax increment account, regardless of whether that amount exceeds the authority’s sales and use tax levy equivalent, until any amounts owed for all previous years’ maintenance and operating expenses and for any capital cost incurred for the benefit of the public transportation financing area have been paid.