205 ILCS 675/7
(a) At or before the date a billing statement is first rendered to the borrower under a revolving credit plan, the financial institution must mail or deliver to the borrower a written description of the conditions under which a charge for interest may be made and the method, including the rate (expressed as an annual percentage rate), of computing these interest charges. If during any billing period any debit or credit entry is made to a borrower's account under a revolving credit plan, and if at the end of that billing period there is an unpaid balance owing to the financial institution from the borrower, the financial institution must give to the borrower the following information within a reasonable time after the end of the billing period:
(6) the total amount remaining unpaid at the end of the billing period and the right of the borrower to prepay that amount in full without penalty.
A financial institution which complies with or is exempt from the applicable disclosure requirements of the Truth-in-Lending Act, and regulations promulgated thereunder, as in effect from time to time, shall be deemed to be in compliance or exempt from with all of the provisions of this Section 7.
(from Ch. 17, par. 7007)
(Source: P.A. 85-1432.)