(35 ILCS 110/11) (from Ch. 120, par. 439.41)
    Sec. 11. Every serviceman required or authorized to collect taxes hereunder and every user who is subject to the tax imposed by this Act shall keep such records, receipts, invoices and other pertinent books, documents, memoranda and papers as the Department shall require, in such form as the Department shall require. The Department may adopt rules that establish requirements, including record forms and formats, for records required to be kept and maintained by taxpayers. For purposes of this Section, "records" means all data maintained by the taxpayer, including data on paper, microfilm, microfiche or any type of machine-sensible data compilation. For the purpose of administering and enforcing the provisions hereof, the Department, or any officer or employee of the Department designated, in writing, by the Director thereof, may hold investigations and hearings concerning any matters covered herein and not otherwise delegated to the Illinois Independent Tax Tribunal and may examine any relevant books, papers, records, documents or memoranda of any serviceman or any taxable purchaser for use hereunder, and may require the attendance of such person or any officer or employee of such person, or of any person having knowledge of the facts, and may take testimony and require proof for its information.
(Source: P.A. 97-1129, eff. 8-28-12.)