House Sponsors: BLACK-COULSON. Short description: INC TX-ESTIMATED TAX Synopsis of Bill as introduced: Amends the Illinois Income Tax Act. Requires certain taxpayers to pay estimated tax if the amount payable as estimated tax can reasonably be expected to be more than $500 (now, $250). Effective January 1, 1998. Last action on Bill: SESSION SINE DIE Last action date: 99-01-12 Location: House Amendments to Bill: AMENDMENTS ADOPTED: HOUSE - 0 SENATE - 0 END OF INQUIRY Full Text Bill Status