Synopsis As Introduced Creates the Historic Rehabilitation Tax Credit Act. Authorizes tax credits against Illinois income taxes and insurance company privilege taxes for 25% of the costs of rehabilitating eligible historic property. Allows excess credits to be carried back and forward. Allows credits to be transferred, sold, or assigned. Provides that the credit is administered by the Department of Commerce and Economic Opportunity. Sets forth application and award procedures. Makes related changes in the Illinois Income Tax Act and the Illinois Insurance Code. Effective July 1, 2011.