815 ILCS 375/2.13
Current through Public Act 103-593
"Annual percentage rate" means the nominal annual percentage rate of finance charge determined in accordance with the actuarial method of computation with an accuracy at least to the nearest 1/4 of 1%; or at the option of the seller, by application of the United States rule so that it may be disclosed with an accuracy at least to the nearest 1/4 of 1%.
815 ILCS 375/2.13