(20 ILCS 687/Art. I heading)

(20 ILCS 687/6-8) Sec. 6-8. Application of Retailers' Occupation Tax provisions. All the provisions of Sections 4, 5, 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5i, 5j, 6, 6a, 6b, 6c, 7, 8, 9, 10, 11, 11a, 12, and 13 of the Retailers' Occupation Tax Act that are not inconsistent with this Act apply, as far as practicable, to the surcharge imposed by this Act to the same extent as if those provisions were included in this Act. References in the incorporated Sections of the Retailers' Occupation Tax Act to retailers, to sellers, or to persons engaged in the business of selling tangible personal property mean persons required to remit the charge imposed under this Act. (Source: P.A. 100-1171, eff. 1-4-19.)

(20 ILCS 687/15) Sec. 15. If any provision added by this amendatory Act of 1997 is held invalid, this entire amendatory Act of 1997 shall be deemed invalid, and the provisions of Section 1.31, "Severability", of the Statute on Statutes are hereby expressly declared not applicable to this amendatory Act of 1997; provided, however (i) that any contracts entered into and performed, transactions completed, orders issued, services provided, billings rendered, or payments made in accordance with the provisions of this amendatory Act of 1997, other than as provided in clause (ii) below, prior to the date of the determination of such invalidity, shall not thereby be rendered invalid; (ii) that no presumption as to the validity or invalidity of any contracts, transactions, orders, billings, or payments pursuant to Article XVIII of the Public Utilities Act shall result from a determination of invalidity of this amendatory Act of 1997; and (iii) that the provisions of proviso (i) shall not be deemed to preserve the validity of any executory contracts or transactions, of any actions to be taken pursuant to orders issued, or of any services to be performed, billings to be rendered, or payments to be made, pursuant to provisions of this amendatory Act of 1997 subsequent to the date of determination of such invalidity. (Source: P.A. 90-561, eff. 12-16-97.)