PART 100 INCOME TAX : Sections Listing

TITLE 86: REVENUE
CHAPTER I: DEPARTMENT OF REVENUE
PART 100 INCOME TAX


SUBPART A: TAX IMPOSED

SUBPART B: CREDITS

SUBPART C: NET OPERATING LOSSES OF UNITARY BUSINESS GROUPS OCCURRING PRIOR TO DECEMBER 31, 1986

SUBPART D: ILLINOIS NET LOSS DEDUCTIONS FOR LOSSES OCCURRING ON OR AFTER DECEMBER 31, 1986

SUBPART E: ADDITIONS TO AND SUBTRACTIONS FROM TAXABLE INCOME OF INDIVIDUALS, CORPORATIONS, TRUSTS AND ESTATES AND PARTNERSHIPS

SUBPART F: BASE INCOME OF INDIVIDUALS

SUBPART G: BASE INCOME OF CORPORATIONS

SUBPART H: BASE INCOME OF TRUSTS AND ESTATES

SUBPART I: BASE INCOME OF PARTNERSHIPS

SUBPART J: GENERAL RULES OF ALLOCATION AND APPORTIONMENT OF BASE INCOME

SUBPART K: COMPENSATION

SUBPART L: NON-BUSINESS INCOME OF PERSONS OTHER THAN RESIDENTS

SUBPART M: BUSINESS INCOME OF PERSONS OTHER THAN RESIDENTS

SUBPART N: ACCOUNTING

SUBPART O: TIME AND PLACE FOR FILING RETURNS

SUBPART P: COMPOSITE RETURNS

SUBPART Q: COMBINED RETURNS

SUBPART R: PAYMENTS

SUBPART S: REQUIREMENT AND AMOUNT OF WITHHOLDING

SUBPART T: AMOUNT EXEMPT FROM WITHHOLDING

SUBPART U: INFORMATION STATEMENT

SUBPART V: EMPLOYER'S RETURN AND PAYMENT OF TAX WITHHELD

SUBPART W: ESTIMATED TAX PAYMENTS

SUBPART X: COLLECTION AUTHORITY

SUBPART Y: NOTICE AND DEMAND

SUBPART Z: ASSESSMENT

SUBPART AA: DEFICIENCIES AND OVERPAYMENTS

SUBPART BB: CREDITS AND REFUNDS

SUBPART CC: INVESTIGATIONS AND HEARINGS

SUBPART DD: JUDICIAL REVIEW

SUBPART EE: DEFINITIONS

SUBPART FF: LETTER RULING PROCEDURES

SUBPART GG: MISCELLANEOUS

AUTHORITY: Implementing Section 505 of the Illinois Income Tax Act [35 ILCS 5] as authorized by Section 1401 of the Illinois Income Tax Act [35 ILCS 5] and Section 2505-795 of the Department of Revenue Law [20 ILCS 2505].

SOURCE: Filed July 14, 1971, effective July 24, 1971; amended at 2 Ill. Reg. 49, p. 84, effective November 29, 1978; amended at 5 Ill. Reg. 813, effective January 7, 1981; amended at 5 Ill. Reg. 4617, effective April 14, 1981; amended at 5 Ill. Reg. 4624, effective April 14, 1981; amended at 5 Ill. Reg. 5537, effective May 7, 1981; amended at 5 Ill. Reg. 5705, effective May 20, 1981; amended at 5 Ill. Reg. 5883, effective May 20, 1981; amended at 5 Ill. Reg. 6843, effective June 16, 1981; amended at 5 Ill. Reg. 13244, effective November 13, 1981; amended at 5 Ill. Reg. 13724, effective November 30, 1981; amended at 6 Ill. Reg. 579, effective December 29, 1981; amended at 6 Ill. Reg. 9701, effective July 26, 1982; amended at 7 Ill. Reg. 399, effective December 28, 1982; amended at 8 Ill. Reg. 6184, effective April 24, 1984; codified at 8 Ill. Reg. 19574; amended at 9 Ill. Reg. 16986, effective October 21, 1985; amended at 9 Ill. Reg. 685, effective December 31, 1985; amended at 10 Ill. Reg. 7913, effective April 28, 1986; amended at 10 Ill. Reg. 19512, effective November 3, 1986; amended at 10 Ill. Reg. 21941, effective December 15, 1986; amended at 11 Ill. Reg. 831, effective December 24, 1986; amended at 11 Ill. Reg. 2450, effective January 20, 1987; amended at 11 Ill. Reg. 12410, effective July 8, 1987; amended at 11 Ill. Reg. 17782, effective October 16, 1987; amended at 12 Ill. Reg. 4865, effective February 25, 1988; amended at 12 Ill. Reg. 6748, effective March 25, 1988; amended at 12 Ill. Reg. 11766, effective July 1, 1988; amended at 12 Ill. Reg. 14307, effective August 29, 1988; amended at 13 Ill. Reg. 8917, effective May 30, 1989; amended at 13 Ill. Reg. 10952, effective June 26, 1989; amended at 14 Ill. Reg. 4558, effective March 8, 1990; amended at 14 Ill. Reg. 6810, effective April 19, 1990; amended at 14 Ill. Reg. 10082, effective June 7, 1990; amended at 14 Ill. Reg. 16012, effective September 17, 1990; emergency amendment at 17 Ill. Reg. 473, effective December 22, 1992, for a maximum of 150 days; amended at 17 Ill. Reg. 8869, effective June 2, 1993; amended at 17 Ill. Reg. 13776, effective August 9, 1993; recodified at 17 Ill. Reg. 14189; amended at 17 Ill. Reg. 19632, effective November 1, 1993; amended at 17 Ill. Reg. 19966, effective November 9, 1993; amended at 18 Ill. Reg. 1510, effective January 13, 1994; amended at 18 Ill. Reg. 2494, effective January 28, 1994; amended at 18 Ill. Reg. 7768, effective May 4, 1994; amended at 19 Ill. Reg. 1839, effective February 6, 1995; amended at 19 Ill. Reg. 5824, effective March 31, 1995; emergency amendment at 20 Ill. Reg. 1616, effective January 9, 1996, for a maximum of 150 days; amended at 20 Ill. Reg. 6981, effective May 7, 1996; amended at 20 Ill. Reg. 10706, effective July 29, 1996; amended at 20 Ill. Reg. 13365, effective September 27, 1996; amended at 20 Ill. Reg. 14617, effective October 29, 1996; amended at 21 Ill. Reg. 958, effective January 6, 1997; emergency amendment at 21 Ill. Reg. 2969, effective February 24, 1997, for a maximum of 150 days; emergency expired July 24, 1997; amended at 22 Ill. Reg. 2234, effective January 9, 1998; amended at 22 Ill. Reg. 19033, effective October 1, 1998; amended at 22 Ill. Reg. 21623, effective December 15, 1998; amended at 23 Ill. Reg. 3808, effective March 11, 1999; amended at 24 Ill. Reg. 10593, effective July 7, 2000; amended at 24 Ill. Reg. 12068, effective July 26, 2000; emergency amendment at 24 Ill. Reg. 17585, effective November 17, 2000, for a maximum of 150 days; amended at 24 Ill. Reg. 18731, effective December 11, 2000; amended at 25 Ill. Reg. 4640, effective March 15, 2001; amended at 25 Ill. Reg. 4929, effective March 23, 2001; amended at 25 Ill. Reg. 5374, effective April 2, 2001; amended at 25 Ill. Reg. 6687, effective May 9, 2001; amended at 25 Ill. Reg. 7250, effective May 25, 2001; amended at 25 Ill. Reg. 8333, effective June 22, 2001; amended at 26 Ill. Reg. 192, effective December 20, 2001; amended at 26 Ill. Reg. 1274, effective January 15, 2002; amended at 26 Ill. Reg. 9854, effective June 20, 2002; amended at 26 Ill. Reg. 13237, effective August 23, 2002; amended at 26 Ill. Reg. 15304, effective October 9, 2002; amended at 26 Ill. Reg. 17250, effective November 18, 2002; amended at 27 Ill. Reg. 13536, effective July 28, 2003; amended at 27 Ill. Reg. 18225, effective November 17, 2003; emergency amendment at 27 Ill. Reg. 18464, effective November 20, 2003, for a maximum of 150 days; emergency expired April 17, 2004; amended at 28 Ill. Reg. 1378, effective January 12, 2004; amended at 28 Ill. Reg. 5694, effective March 17, 2004; amended at 28 Ill. Reg. 7125, effective April 29, 2004; amended at 28 Ill. Reg. 8881, effective June 11, 2004; emergency amendment at 28 Ill. Reg. 14271, effective October 18, 2004, for a maximum of 150 days; amended at 28 Ill. Reg. 14868, effective October 26, 2004; emergency amendment at 28 Ill. Reg. 15858, effective November 29, 2004, for a maximum of 150 days; amended at 29 Ill. Reg. 2420, effective January 28, 2005; amended at 29 Ill. Reg. 6986, effective April 26, 2005; amended at 29 Ill. Reg. 13211, effective August 15, 2005; amended at 29 Ill. Reg. 20516, effective December 2, 2005; amended at 30 Ill. Reg. 6389, effective March 30, 2006; amended at 30 Ill. Reg. 10473, effective May 23, 2006; amended by 30 Ill. Reg. 13890, effective August 1, 2006; amended at 30 Ill. Reg. 18739, effective November 20, 2006; amended at 31 Ill. Reg. 16240, effective November 26, 2007; amended at 32 Ill. Reg. 872, effective January 7, 2008; amended at 32 Ill. Reg. 1407, effective January 17, 2008; amended at 32 Ill. Reg. 3400, effective February 25, 2008; amended at 32 Ill. Reg. 6055, effective March 25, 2008; amended at 32 Ill. Reg. 10170, effective June 30, 2008; amended at 32 Ill. Reg. 13223, effective July 24, 2008; amended at 32 Ill. Reg. 17492, effective October 24, 2008; amended at 33 Ill. Reg. 1195, effective December 31, 2008; amended at 33 Ill. Reg. 2306, effective January 23, 2009; amended at 33 Ill. Reg. 14168, effective September 28, 2009; amended at 33 Ill. Reg. 15044, effective October 26, 2009; amended at 34 Ill. Reg. 550, effective December 22, 2009; amended at 34 Ill. Reg. 3886, effective March 12, 2010; amended at 34 Ill. Reg. 12891, effective August 19, 2010; amended at 35 Ill. Reg. 4223, effective February 25, 2011; amended at 35 Ill. Reg. 15092, effective August 24, 2011; amended at 36 Ill. Reg. 2363, effective January 25, 2012; amended at 36 Ill. Reg. 9247, effective June 5, 2012; amended at 37 Ill. Reg. 5823, effective April 19, 2013; amended at 37 Ill. Reg. 20751, effective December 13, 2013; recodified at 38 Ill. Reg. 4527; amended at 38 Ill. Reg. 9550, effective April 21, 2014; amended at 38 Ill. Reg. 13941, effective June 19, 2014; amended at 38 Ill. Reg. 15994, effective July 9, 2014; amended at 38 Ill. Reg. 17043, effective July 23, 2014; amended at 38 Ill. Reg. 18568, effective August 20, 2014; amended at 38 Ill. Reg. 23158, effective November 21, 2014; emergency amendment at 39 Ill. Reg. 483, effective December 23, 2014, for a maximum of 150 days; amended at 39 Ill. Reg. 1768, effective January 7, 2015; amended at 39 Ill. Reg. 5057, effective March 17, 2015; amended at 39 Ill. Reg. 6884, effective April 29, 2015; amended at 39 Ill. Reg. 15594, effective November 18, 2015; amended at 40 Ill. Reg. 1848, effective January 5, 2016; amended at 40 Ill. Reg. 10925, effective July 29, 2016; amended at 40 Ill. Reg. 13432, effective September 7, 2016; amended at 40 Ill. Reg. 14762, effective October 12, 2016; amended at 40 Ill. Reg. 15575, effective November 2, 2016; amended at 41 Ill. Reg. 4193, effective March 27, 2017; amended at 41 Ill. Reg. 6379, effective May 22, 2017; amended at 41 Ill. Reg. 10662, effective August 3, 2017; amended at 41 Ill. Reg. 12608, effective September 21, 2017; amended at 41 Ill. Reg. 14217, effective November 7, 2017; emergency amendment at 41 Ill. Reg. 15097, effective November 30, 2017, for a maximum of 150 days; amended at 42 Ill. Reg. 4953, effective February 28, 2018; amended at 42 Ill. Reg. 6451, effective March 21, 2018; recodified Subpart H to Subpart G at 42 Ill. Reg. 7980; amended at 42 Ill. Reg. 17852, effective September 24, 2018; amended at 42 Ill. Reg. 19190, effective October 12, 2018; amended at 43 Ill. Reg. 727, effective December 18, 2018; amended at 43 Ill. Reg. 10124, effective August 27, 2019; amended at 44 Ill. Reg. 2363, effective January 17, 2020; amended at 44 Ill. Reg. 2845, effective January 30, 2020; emergency amendment at 44 Ill. Reg. 4700, effective March 4, 2020, for a maximum of 150 days; emergency expired July 31, 2020; amended at 44 Ill. Reg. 10907, effective June 10, 2020; emergency amendment at 44 Ill. Reg. 11208, effective June 17, 2020, for a maximum of 150 days; emergency expired November 13, 2020; amended at 44 Ill. Reg. 17414, effective October 13, 2020; amended at 45 Ill. Reg. 2006, effective January 29, 2021; amended at 45 Ill. Reg. 5523, effective April 15, 2021; amended at 46 Ill. Reg. 13312, effective July 12, 2022; amended at 46 Ill. Reg. 14550, effective August 2, 2022; amended at 46 Ill. Reg. 15317, effective August 24, 2022; amended at 46 Ill. Reg. 18102, effective October 26, 2022; amended at 47 Ill. Reg. 1402, effective January 10, 2023; amended at 47 Ill. Reg. 2093, effective January 24, 2023; amended at 47 Ill. Reg. 5726, effective April 4, 2023; amended at 47 Ill. Reg. 6030, effective April 12, 2023; amended at 47 Ill. Reg. 13669, effective September 11, 2023; emergency amendment at 47 Ill. Reg. 17214, effective November 6, 2023, for a maximum of 150 days; amended at 48 Ill. Reg. 1677, effective January 10, 2024; amended at 48 Ill. Reg. 2243, effective January 29, 2024; amended at 48 Ill. Reg. 4433, effective March 11, 2024; amended at 48 Ill. Reg. 10281, effective June 25, 2024; amended at 48 Ill. Reg. 10846, effective July 11, 2024.

SUBPART A: TAX IMPOSED

SUBPART B: CREDITS

SUBPART C: NET OPERATING LOSSES OF UNITARY BUSINESS GROUPS OCCURRING PRIOR TO DECEMBER 31, 1986

SUBPART D: ILLINOIS NET LOSS DEDUCTIONS FOR LOSSES OCCURRING ON OR AFTER DECEMBER 31, 1986

SUBPART E: ADDITIONS TO AND SUBTRACTIONS FROM TAXABLE INCOME OF INDIVIDUALS, CORPORATIONS, TRUSTS AND ESTATES AND PARTNERSHIPS

SUBPART F: BASE INCOME OF INDIVIDUALS

SUBPART G: BASE INCOME OF CORPORATIONS

SUBPART H: BASE INCOME OF TRUSTS AND ESTATES

SUBPART I: BASE INCOME OF PARTNERSHIPS

SUBPART J: GENERAL RULES OF ALLOCATION AND APPORTIONMENT OF BASE INCOME

SUBPART K: COMPENSATION

SUBPART L: NON-BUSINESS INCOME OF PERSONS OTHER THAN RESIDENTS

SUBPART M: BUSINESS INCOME OF PERSONS OTHER THAN RESIDENTS

SUBPART N: ACCOUNTING

SUBPART O: TIME AND PLACE FOR FILING RETURNS

SUBPART P: COMPOSITE RETURNS

SUBPART Q: COMBINED RETURNS

SUBPART R: PAYMENTS

SUBPART S: REQUIREMENT AND AMOUNT OF WITHHOLDING

SUBPART T: AMOUNT EXEMPT FROM WITHHOLDING

SUBPART U: INFORMATION STATEMENT

SUBPART V: EMPLOYER'S RETURN AND PAYMENT OF TAX WITHHELD

SUBPART W: ESTIMATED TAX PAYMENTS

SUBPART X: COLLECTION AUTHORITY

SUBPART Y: NOTICE AND DEMAND

SUBPART Z: ASSESSMENT

SUBPART AA: DEFICIENCIES AND OVERPAYMENTS

SUBPART BB: CREDITS AND REFUNDS

SUBPART CC: INVESTIGATIONS AND HEARINGS

SUBPART DD: JUDICIAL REVIEW

SUBPART EE: DEFINITIONS

SUBPART FF: LETTER RULING PROCEDURES

SUBPART GG: MISCELLANEOUS