This series of articles is intended to provide a deep dive into the Illinois State Franchise Tax (the “Franchise Tax”) and should be read sequentially to be best understood. The first article covered the businesses and entities required to pay the Franchise Tax and the mechanics of the Franchise Tax system. The second defined the essential terms to understand the Franchise Tax and its calculation and covered some significant differences between the Franchise Tax and the state Income and Corporate Income Tax. The third provided specific resources and examples on correctly calculating your Allocation Factor for the Franchise Tax.