(35 ILCS 135/13) (from Ch. 120, par. 453.43)
    Sec. 13. Examination and correction of return. As soon as practicable after any return is filed, the Department shall examine such return and shall correct such return according to its best judgment and information, which return so corrected by the Department shall be prima facie correct and shall be prima facie evidence of the correctness of the amount of tax due, as shown therein. Proof of such correction by the Department may be made at any hearing before the Department or in any legal proceeding by a reproduced copy of the Department's record relating thereto in the name of the Department under the certificate of the Director of Revenue. Such reproduced copy shall, without further proof, be admitted into evidence before the Department or in any legal proceeding and shall be prima facie proof of the correctness of the amount of tax due, as shown therein. If the tax as fixed by the Department is greater than the amount of the tax due under the return as filed, the Department shall issue the person filing such return a notice of tax liability for the amount of tax claimed by the Department to be due, together with a penalty in an amount determined in accordance with Sections 3-3, 3-5 and 3-6 of the Uniform Penalty and Interest Act. If, in administering the provisions of this Act, comparison of a return or returns of a distributor with the books, records and inventories of such distributor discloses a deficiency which cannot be allocated by the Department to a particular month or months, the Department shall issue the distributor a notice of tax liability for the amount of tax claimed by the Department to be due for a given period, but without any obligation upon the Department to allocate such deficiency to any particular month or months, together with a penalty in an amount determined in accordance with Sections 3-3, 3-5 and 3-6 of the Uniform Penalty and Interest Act, under which circumstances the aforesaid notice of tax liability shall be prima facie correct and shall be prima facie evidence of the correctness of the amount of tax due, as shown therein; and proof of such correctness may be made in accordance with, and the admissibility of a reproduced copy of such notice of tax liability shall be governed by, all the provisions of this Act applicable to corrected returns.
    If any person filing any return dies or becomes a person under legal disability at any time before the Department issues its notice of tax liability, such notice shall be issued to the administrator, executor or other legal representative, as such, of such person.
    Except as otherwise provided in this Section, if within 60 days after such notice of tax liability, the person to whom such notice is issued or his legal representative files a protest to such notice of tax liability and requests a hearing thereon, the Department shall give notice to such person or legal representative of the time and place fixed for such hearing, and shall hold a hearing in conformity with the provisions of this Act, and pursuant thereto shall issue a final assessment to such person or legal representative for the amount found to be due as a result of such hearing. Effective July 1, 2013, protests concerning matters that are subject to the jurisdiction of the Illinois Independent Tax Tribunal shall be filed with the Tribunal in accordance with the Illinois Independent Tax Tribunal Act of 2012, and hearings concerning those matters shall be held before the Tribunal in accordance with that Act. With respect to protests filed with the Department prior to July 1, 2013 that would otherwise be subject to the jurisdiction of the Illinois Independent Tax Tribunal, the person filing the protest may elect to be subject to the provisions of the Illinois Independent Tax Tribunal Act of 2012 at any time on or after July 1, 2013, but not later than 30 days after the date on which the protest was filed. If made, the election shall be irrevocable. If a protest to the notice of tax liability and a request for a hearing thereon is not filed within the time allowed by law, such notice of tax liability shall become final without the necessity of a final assessment being issued and shall be deemed to be a final assessment.
(Source: P.A. 97-1129, eff. 8-28-12.)