Illinois Flash Index Rises in June as Tax Revenue Shows Continued Growth 

CHICAGO – The Illinois Flash Index for June 2026 rose to 101.4 from 101.1 in May.  Individual income tax, corporate tax and sales tax receipts all increased compared to the same month last year after adjusting for inflation. For the fiscal year ending June 30, combined revenues from the three tax sources were up over the last fiscal year in real terms, led by strong individual income tax receipts.