HB 4089

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Full Text of HB4089
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	HB4089 - 104th General Assembly
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104TH GENERAL ASSEMBLY
State of Illinois
2025 and 2026
HB4089
Introduced 10/15/2025, by Rep. Travis Weaver
SYNOPSIS AS INTRODUCED:
35 ILCS 5/803	  from Ch. 120, par. 8-803
Amends the Illinois Income Tax Act. Provides that, for taxable years ending on or after December 31, 2026, eligible taxpayers that are not corporations are required to pay estimated tax if the amount payable as estimated tax can reasonably be expected to be more than $25,000 (currently, $1,000). Effective immediately.
LRB104 14481 HLH 27620 b
A BILL FOR
		HB4089		LRB104 14481 HLH 27620 b
1    AN ACT concerning revenue.
2    Be it enacted by the People of the State of Illinois,
3represented in the General Assembly:
4    Section 5. The Illinois Income Tax Act is amended by
5changing Section 803 as follows:
6    (35 ILCS 5/803)  (from Ch. 120, par. 8-803)
7    Sec. 803. Payment of estimated tax.
8    (a) Every eligible taxpayer [other than an estate, trust, ]
9[partnership, Subchapter S corporation or farmer] is required to
10pay estimated tax for the taxable year, in such amount and with
11such forms as the Department shall prescribe, if the amount
12payable as estimated tax can reasonably be expected to be more
13than the estimated tax minimum amount. [(i) $250 for taxable ]
14[years ending before December 31, 2001, $500 for taxable years ]
15[ending on or after December 31, 2001 and before December 31, ]
16[2019, and $1,000 for taxable years ending on or after December ]
17[31, 2019, or (ii) $400 for corporations.]
18    (b) Definitions. As used in this Section: [Estimated tax ]
19[defined. The term "estimated]
20    "Eligible taxpayer" means a taxpayer other than an estate, 
21trust, partnership, Subchapter S corporation, or farmer.
22    "Estimated tax" means the excess of:
23        (1) The amount which the taxpayer estimates to be his
		HB4089	- 2 -	LRB104 14481 HLH 27620 b
1    tax under this Act for the taxable year, over
2        (2) The amount which he estimates to be the sum of any
3    amounts to be withheld on account of or credited against
4    such tax.
5    "Estimated tax minimum amount" means:
6        (1) for eligible taxpayers other than corporations:
7            (A) $250 for taxable years ending before December 
8        31, 2001;
9            (B) $500 for taxable years ending on or after 
10        December 31, 2001 and before December 31, 2019;
11            (C) $1,000 for taxable years ending on or after 
12        December 31, 2019 and before December 31, 2026; and
13            (D) $25,000 for taxable years ending on or after 
14        December 31, 2026; and
15        (2) for eligible taxpayers that are corporations, 
16    $400.
17    "Farmer" means an individual having gross income from 
18farming for the taxable year that is at least two-thirds of his 
19total estimated gross income for that year.
20    (c) Joint payment. If they are eligible to do so for
21federal tax purposes, a husband and wife may pay estimated tax
22as if they were one taxpayer, in which case the liability with
23respect to the estimated tax shall be joint and several. If a
24joint payment is made but the husband and wife elect to
25determine their taxes under this Act separately, the estimated
26tax for such year may be treated as the estimated tax of either
		HB4089	- 3 -	LRB104 14481 HLH 27620 b
1husband or wife, or may be divided between them, as they may
2elect.
3    (d) There shall be paid 4 equal installments of estimated
4tax for each taxable year, payable as follows:
5Required Installment:	Due Date:
61st	April 15
72nd	June 15
83rd	September 15
94th	Individuals: January 15 of the
10	following taxable year
11	Corporations: December 15
12    (e) (Blank). [Farmers. An individual, having gross income ]
13[from farming for the taxable year which is at least 2/3 of his ]
14[total estimated gross income for such year.]
15    (f) Application to short taxable years. The application of
16this section to taxable years of less than 12 months shall be
17in accordance with regulations prescribed by the Department.
18    (g) Fiscal years. In the application of this section to
19the case of a taxable year beginning on any date other than
20January 1, there shall be substituted, for the months
21specified in subsections (d) and (e), the months which
22correspond thereto.
23    (h) Installments paid in advance. Any installment of
24estimated tax may be paid before the date prescribed for its
25payment.
26    The changes in this Section made by this amendatory Act of
		HB4089	- 4 -	LRB104 14481 HLH 27620 b
11985 shall apply to taxable years ending on or after January 1,
21986.
3(Source: P.A. 101-355, eff. 8-9-19.)
4    Section 99. Effective date. This Act takes effect upon
5becoming law.