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2023 Individual Income Tax Forms
| Form | Instructions | Description |
|---|---|---|
| IL-1040 |
Instructions (html) English (pdf) Español (pdf) |
Individual Income Tax Return |
| IL-1040-X | Instructions (html) English (pdf) Español (pdf) |
Amended Individual Income Tax Return |
| IL-1040-ES | 2024 Estimated Income Tax Payments for Individuals Use this form for payments that are due on April 15, 2024, June 17, 2024, September 16, 2024, and January 15, 2025. |
|
| IL-1040-V | Payment Voucher for Individual Income Tax |
|
| IL-1040-X-V | Payment Voucher for Amended Individual Income Tax |
|
| IL-505-I | Automatic Extension Payment for Individuals Filing Form IL-1040 |
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| IL-1310 | Statement of Person Claiming Refund Due a Deceased Taxpayer |
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| IL-2210 | Instructions (html) English (pdf) Español (pdf) |
Computation of Penalties for Individuals |
| IL-4562 | English (pdf) | Special Depreciation |
| IL-4644 | English (pdf) | Gains from Sales of Employer's Securities Received from a Qualified Employee Benefit Plan |
| IL-4852 | Substitute for Unobtainable Form W-2 |
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| Schedule 1299-C | Instructions (html) English (pdf) Español (pdf) |
Income Tax Subtractions & Credits (for individuals) |
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07/10/24 – Updated to include new Quantum Computing Campuses tax credit and to extend expiration dates for credits affected by recently passed legislation. |
Income Tax Credits Information and Worksheets | |
| Schedule 4255 | English (pdf) | Recapture of Investment Tax Credits |
| Schedule CR | Instructions (html) English (pdf) Español (pdf) |
Credit for Tax Paid to Other States |
| Schedule F | Instructions (html) English (pdf) Español (pdf) |
Gains from Sales or Exchanges of Property Acquired Before August 1, 1969 |
| Schedule G | Instructions (html) English (pdf) Español (pdf) |
Voluntary Charitable Donations |
| Schedule ICR | Instructions (html) English (pdf) Español (pdf) |
Illinois Credits |
| Schedule IL-E/EIC | Instructions (html) English (pdf) Español (pdf) |
Illinois Exemption and Earned Income Credit |
| Schedule M | Instructions (html) English (pdf) Español (pdf) |
Other Additions and Subtractions for Individuals |
| Schedule NR | Instructions (html) English (pdf) Español (pdf) |
Nonresident and Part-Year Resident Computation of Illinois Tax |
| Schedule IL-WIT |
Instructions (html) English (pdf) Español (pdf) |
Illinois Income Tax Withheld |