Pay day loans in Chicago, IL also in just about any town of Illinois state are LEGAL in accordance with Ill. Comp. Stat. Ann. § 122/1-1 1 . $100 – $1,000 ( not a lot more than 25% of gross month-to-month income) cash loan could be lent for 13-45 times. The APR that is average by their state legislation is 403%, which can be $15.50 charged per $100 for two weeks.