- (35 ILCS 5/) Illinois Income Tax Act.

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    (35 ILCS 5/509.1)
    Sec. 509.1. Removal of excess tax-checkoff funds. Notwithstanding any provisions of this Act to the contrary, beginning on the effective date of this amendatory Act of the 95th General Assembly, there may not be more than 15 tax-checkoff funds contained on the individual tax return form at any one time. Each year, the Department shall determine whether the sum of (i) the number of new tax-checkoff funds created by the General Assembly during that year plus (ii) the number of tax-checkoff funds that collected at least $100,000 during the previous year exceeds 15. If so, then the Department shall remove a number of tax-checkoff funds that were on the return during the previous year that is equal to the sum of items (i) and (ii) minus 15, starting with the tax-checkoff fund that received the least amount of contributions and working upward until a sufficient number of funds have been removed. The Hunger Relief Fund checkoff established under Section 507SS shall be included among the 15 tax-checkoff funds as provided in subsection (d) of Section 509 of this Act.
    For taxable years ending on or after December 31, 2012, the Diabetes Research Checkoff Fund checkoff contained in Section 507GG of this Act shall be included on the individual tax return form notwithstanding the provisions of this Section. The Diabetes Research Checkoff Fund checkoff shall not be included when calculating the 15 tax-checkoff fund limitation set forth in this Section.
(Source: P.A. 97-1117, eff. 8-27-12.)

    (35 ILCS 5/510) (from Ch. 120, par. 5-510)
    Sec. 510. Determination of amounts contributed. The Department shall determine the total amount contributed to each of the funds under this Article 5 and shall notify the State Comptroller and the State Treasurer of the amounts to be transferred from the General Revenue Fund to each fund, and upon receipt of such notification the State Treasurer and Comptroller shall transfer the amounts.
(Source: P.A. 95-331, eff. 8-21-07; 95-434, eff. 8-27-07; 95-435, eff. 8-27-07; 95-940, eff. 8-29-08; 96-328, eff. 8-11-09.)

    (35 ILCS 5/511) (from Ch. 120, par. 5-511)
    Sec. 511. Unless the Department is contesting an individual income tax refund due to any taxpayer, the Department shall provide the Comptroller with authorization for such refund to the taxpayer within 120 days of the date on which the return is received by the Department, as long as there are available funds from which to pay such refunds.
(Source: P.A. 84-1079.)

    (35 ILCS 5/512) (from Ch. 120, par. 5-512)
    Sec. 512. (a) All individual income tax return forms for tax years ending December 31, 1986 through December 30, 1995 shall contain an appropriate space in which the taxpayer must indicate either (i) the name and number of the high school district in which they reside on the date such return is filed, or (ii) the name and number of the unit school district in which they reside on the date such return is filed. Failure of the taxpayer to insert such information shall not invalidate the return.
    (b) For all tax years ending December 31, 1995 and thereafter, the Department shall provide the State Board of Education with information on individual income tax receipts by school district from the data collected by the Geographic Information System maintained by the Department.
(Source: P.A. 89-21, eff. 7-1-95.)

    (35 ILCS 5/513)
    Sec. 513. Health benefits; easy enrollment program.
    (a) For tax years ending on or after December 31, 2022, the Department shall print on each standard individual income tax return a single provision that (i) allows the taxpayer to request information about the taxpayer's eligibility for health insurance benefits and (ii) authorizes the Department to share the taxpayer's income information with the State health benefits exchange for that purpose if a State health benefits exchange is operational. The Department shall indicate on the return that, by marking the provision under this subsection (a), the taxpayer is authorizing the Department to provide health insurance eligibility information to the taxpayer and to share the taxpayer's income information with the State health benefits exchange.
    (b) By June 1 and October 1 of each year, the Department of Healthcare and Family Services and the Department of Insurance shall provide the Department with a form letter describing health insurance enrollment options for taxpayers. This subsection (b) shall not apply in any calendar year if, as of January 1 of that calendar year, the State health benefits exchange is operational.
    (c) By July 1 and November 1 of each year, the Department shall send, by e-mail or first class mail, the most recent form letter prepared under subsection (b) to the taxpayers who have indicated on their most recent individual income tax return that they would like to request information about their eligibility for health insurance benefits. This subsection (c) shall not apply in any calendar year if, as of January 1 of that calendar year, the State health benefits exchange is operational.
    (d) Any marketplace enrollment platform for a State health benefits exchange that becomes operational on or after the effective date of this amendatory Act of the 102nd General Assembly must interface with the Department's tax system. As soon as the State health benefits exchange is operational, the Director shall make individual income tax information available to the State health benefits exchange if the disclosure is authorized by the taxpayer on the individual income tax return that contains that information. The Department is not required to provide income tax information to the State health benefits exchange under this subsection (d) for a tax year that begins more than 2 years prior to the date the State health benefits exchange is operational. The State health benefits exchange shall use the information provided by the Department to assess the individual taxpayer's potential eligibility for health insurance premium tax credits and Medicaid. The State health benefits exchange shall inform the taxpayer of the results of its eligibility assessment.
    (e) As used in this Section, "State health benefits exchange" means a State health benefits exchange established by the State of Illinois in accordance with Section 1311 of the federal Patient Protection and Affordable Care Act.
(Source: P.A. 102-799, eff. 5-13-22.)

    (35 ILCS 5/516) (from Ch. 120, par. 5-516)
    Sec. 516. The Department shall print on its standard individual income tax form a provision indicating that if the taxpayer wishes to contribute to the Assistance to the Homeless Fund created by this amendatory Act of 1989, he or she may do so by stating the amount of such contribution (not less than $1) on such return and that such contributions will reduce the taxpayer's refund or increase the amount of payment to accompany the return. Failure to remit any amount of increased payment shall reduce the contribution accordingly. This Section shall not apply to an amended return.
(Source: P.A. 86-960.)


 
    (35 ILCS 5/Art. 6 heading)
ARTICLE 6. PAYMENTS.

    (35 ILCS 5/601) (from Ch. 120, par. 6-601)
    Sec. 601. Payment on due date of return.
    (a) In general. Every taxpayer required to file a return under this Act shall, without assessment, notice or demand, pay any tax due thereon to the Department, at the place fixed for filing, on or before the date fixed for filing such return (determined without regard to any extension of time for filing the return) pursuant to regulations prescribed by the Department. If, however, the due date for payment of a taxpayer's federal income tax liability for a tax year (as provided in the Internal Revenue Code or by Treasury regulation, or as extended by the Internal Revenue Service) is later than the date fixed for filing the taxpayer's Illinois income tax return for that tax year, the Department may, by rule, prescribe a due date for payment that is not later than the due date for payment of the taxpayer's federal income tax liability. For purposes of the Illinois Administrative Procedure Act, the adoption of rules to prescribe a later due date for payment shall be deemed an emergency and necessary for the public interest, safety, and welfare.
    (b) Amount payable. In making payment as provided in this section there shall remain payable only the balance of such tax remaining due after giving effect to the following:
        (1) Withheld tax. Any amount withheld during any
    
calendar year pursuant to Article 7 from compensation paid to a taxpayer shall be deemed to have been paid on account of any tax imposed by subsections 201(a) and (b) of this Act on such taxpayer for his taxable year beginning in such calendar year. If more than one taxable year begins in a calendar year, such amount shall be deemed to have been paid on account of such tax for the last taxable year so beginning.
        (2) Estimated and tentative tax payments. Any amount
    
of estimated tax paid by a taxpayer pursuant to Article 8 for a taxable year shall be deemed to have been paid on account of the tax imposed by this Act for such taxable year.
        (3) Foreign tax. The aggregate amount of tax which is
    
imposed upon or measured by income and which is paid by a resident for a taxable year to another state or states on income which is also subject to the tax imposed by subsections 201(a) and (b) of this Act shall be credited against the tax imposed by subsections 201(a) and (b) otherwise due under this Act for such taxable year. For taxable years ending prior to December 31, 2009, the aggregate credit provided under this paragraph shall not exceed that amount which bears the same ratio to the tax imposed by subsections 201(a) and (b) otherwise due under this Act as the amount of the taxpayer's base income subject to tax both by such other state or states and by this State bears to his total base income subject to tax by this State for the taxable year. For taxable years ending on or after December 31, 2009, the credit provided under this paragraph for tax paid to other states shall not exceed that amount which bears the same ratio to the tax imposed by subsections 201(a) and (b) otherwise due under this Act as the amount of the taxpayer's base income that would be allocated or apportioned to other states if all other states had adopted the provisions in Article 3 of this Act bears to the taxpayer's total base income subject to tax by this State for the taxable year. This subsection is exempt from the 30-day threshold set forth in subparagraph (iii) of paragraph (B) of item (2) of subsection (a) of Section 304. The credit provided by this paragraph shall not be allowed if any creditable tax was deducted in determining base income for the taxable year. Any person claiming such credit shall attach a statement in support thereof and shall notify the Director of any refund or reductions in the amount of tax claimed as a credit hereunder all in such manner and at such time as the Department shall by regulations prescribe.
        (4) Accumulation and capital gain distributions. If
    
the net income of a taxpayer includes amounts included in his base income by reason of Section 667 of the Internal Revenue Code (relating to accumulation and capital gain distributions by a trust, respectively), the tax imposed on such taxpayer by this Act shall be credited with his pro rata portion of the taxes imposed by this Act on such trust for preceding taxable years which would not have been payable for such preceding years if the trust had in fact made distributions to its beneficiaries at the times and in the amounts specified in Sections 666 and 669 of the Internal Revenue Code. The credit provided by this paragraph shall not reduce the tax otherwise due from the taxpayer to an amount less than that which would be due if the amounts included by reason of Section 667 of the Internal Revenue Code were excluded from his or her base income.
    (c) Cross reference. For application against tax due of overpayments of tax for a prior year, see Section 909.
(Source: P.A. 101-585, eff. 8-26-19.)