225 ILCS 105/14
If the permit holder fails to make a report as required by Section 13, or if such report is unsatisfactory, the Department may examine or cause to be examined the books and records of any such holder or his associates or any other person as a witness under oath to determine the total amount of tax due under this Act.
If it is determined that there has been a default in the payment of a tax, the promoter shall be given 20 days notice of the amount due which shall include the expenses incurred in making the examination.
If the promoter does not pay the amount due he shall be disqualified from obtaining a permit under this Act and the Attorney General shall institute suit upon the bond filed pursuant to this Act to recover the tax or penalties imposed by this Act.
225 ILCS 105/14