(a) Except as provided by Subsection (c), a tax imposed under this chapter takes effect on the October 1st after the expiration of the first complete calendar quarter occurring after the date on which the comptroller receives a notice of the action as required by Section 323.405(b).
(b) The repeal of a tax abolished under this chapter takes effect on the October 1st after the expiration of the first complete calendar quarter occurring after the date on which the comptroller receives a notice of the action as required by Section 323.405(b).
(c) A tax imposed under Section 323.105 of this code or Chapter 326 or 383, Local Government Code, takes effect on the first day of the first calendar quarter after the expiration of the first complete calendar quarter occurring after the date on which the comptroller receives a notice of the action as required by Section 323.405(b).
Official text of the Texas Tax Code as published by the Texas Legislative Council.