(a) A tax imposed under this subchapter or a change in the rate of the tax takes effect on the date prescribed by the order imposing the tax or changing the rate.
(b) Except as provided by Subsection (c), the district may impose the tax only if the district issues bonds or enters into other contractual obligations under Subchapter G.

(c) The district may continue to impose the tax after any financial obligations have been fulfilled if the tax revenue is used as authorized by § 3846.004(e) or 3846.302(c).