Synopsis As Introduced Amends the Illinois Income Tax Act. Provides that the research and development credit applies for taxable years ending on or after December 31, 2004, and ending prior to January 1, 2021 (now, January 1, 2011). Provides that the credit is equal to 7 1/2% of the qualifying expenditures for increasing research activities in this State for taxable years ending on or after December 31, 2011. Provides that the credit is refundable for taxpayers whose income for the taxable year is $50,000,000 or less. Requires the Department of Revenue and the Department of Commerce and Economic Opportunity to conduct a study of the effectiveness of the credit. Effective immediately.