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Illinois Free Printable 2025 Schedule UB - Combined Apportionment for Unitary Business Group for 2026 Illinois Combined Apportionment for Unitary Business Group

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Combined Apportionment for Unitary Business Group
2025 Schedule UB - Combined Apportionment for Unitary Business Group

Use your mouse or Tab key to move through the fields. Use your mouse or space bar to enable check boxes. Illinois Department of Revenue *33312251W* 2025 Schedule UB Common year ending for the unitary business group _____ ____ Combined Apportionment for Unitary Business Group For tax years ending on or after December 31, 2025. Attach to your Form IL-1120, Form IL-1120-ST, or Form IL-1065. Month Year IL Attachment No. 5 Step 1 — Provide Your Membership Information Enter the name of the designated agent (see general instructions). Enter the name of the designated agent last year, if it is different than above. Enter the name of the controlling corporation (see general instructions). If the controlling corporation is a member of this unitary group, check the box. - Enter the federal employer identification number (FEIN). - Enter the FEIN, if it is different than above. - Enter the FEIN, if it is different than above. Section A — List all members. See Specific Instructions. A B Name C FEIN 1 2 3 4 5 6 7 8 9 10 - D E F G H I Year Apporending Protected by New Inactive Holding tionment Member (MM/YYYY) P.L. 86-272 member member company method Type / / / / / / / / / / Section B — List any mergers with members listed in Section A. See Specific Instructions. A 1 2 3 B Person who has merged with member - - - Name Name Name Member listed in Section A - FEIN / / - / / - / / Name FEIN FEIN Name FEIN FEIN Name FEIN Date of merger Date of merger Date of merger Section C — List all members who left the group during this tax year. See Specific Instructions. 1 2 3 A Member who was sold - - - Name Name Name - FEIN Name FEIN FEIN B Entity to which member in Column A was sold Name FEIN / / Date of sale - / / - / / FEIN Name FEIN Date of sale Date of sale Section D — Provide information about your excluded members See Specific Instructions and complete Step 5 if the answer below is 1 or greater. 1 Enter the total number of members excluded. Schedule UB (R-12/25) Page 1 of 5 Illinois Department of Revenue *33312252W* Schedule UB Enter the name of the designated agent listed in Step 1. Step 2 — Figure your federal taxable income A - Enter your federal employer identification number (FEIN). Read specific instructions before completing. B C D - FEIN 1 Net receipts or sales - FEIN FEIN Eliminations and adjustments between members (attach explanation) 2 Cost of goods sold 1 2 Line 2 from Line 1. 3 4 5 6 7 8 from federal Form 4797 10 Other income 11 Total income. Add Lines 3 through 10. 12 Compensation of officers 9 10 11 12 less employment credit 14 Repairs and maintenance 15 Bad debts 16 Rents 17 Taxes and licenses 18 Interest 19 Charitable contributions 20 Depreciation 21 Depletion 22 Advertising 23 Pension plan, etc. 24 Employee benefit 13 14 15 16 17 18 19 20 21 22 23 24 buildings deduction 26 Other deductions 25 26 Lines 12 through 26. 27 28 29a special deductions 29c or loss for Illinois purposes. Subtract Line 29c from Line 28. 30 3 Gross profit. Subtract 4 Dividends 5 Interest 6 Gross rents 7 Gross royalties 8 Capital gain net income 9 Net gain or loss 13 Salaries and wages programs 25 Energy efficient commercial 27 Total deductions. Add 28 Taxable income. Subtract Line 27 from Line 11. 29 a Net operating loss deduction b Special deductions c Total NOL and 30 Federal taxable income Schedule UB (R-12/25) This form is authorized by the Illinois Income Tax Act. Disclosure of this information is required of those taxpayers to whom this form applies. Failure to provide this information when required could result in a penalty. E Combined totals 29b Page 2 of 5 Illinois Department of Revenue *33312253W* Schedule UB Enter the name of the designated agent listed in Step 1. - Enter your federal employer identification number (FEIN). Step 3 — Figure your combined business income A B C D - FEIN - FEIN E Eliminations and adjustments Combined between members (attach explanation) totals - FEIN 1 Enter the amounts from 1 2 interest income excluded in arriving at Line 1 3 tax and surcharge deducted in arriving at Line 1 4 5 6 7 8 9 11 12 14 15 16 17 18 19 20 21 Add Lines 10 through 21. Subtract Line 22 from Line 9. 24 Nonbusiness income or loss 23 24 27 Step 2, Line 30. Addition Modifications 2 Net operating loss deduction from Step 2, Line 29a 3 State, municipal, and other 4 Illinois income and replacement 5 Illinois Special Depreciation 6 Related-Party Expenses 7 Distributive share of additions 8 Other additions 9 Total income or loss. Add Lines 1 through 8. Subtraction Modifications 0 Interest income from U.S. 1 Treasury and other exempt federal obligations 11 River Edge Redevelopment Zone Dividend subtraction 12 River Edge Redevelopment Zone Interest subtraction 13 High Impact Business Dividend subtraction 14 High Impact Business Interest subtraction 15 Contribution subtraction 16 Contributions to certain job training projects 17 Foreign Dividend subtraction 18 Illinois Special Depreciation subtraction 19 Related-Party Expenses subtraction 20 Distributive share of subtractions 21 Other subtractions 22 Total subtractions. 23 Base income or loss. 25 Business income or loss from non-unitary partnerships, partnerships included on this Schedule UB, S corporations, trusts, or estates. (See instr.) 26 Add Lines 24 and 25. 27 Combined unitary business income or loss. Subtract Line 26 from Line 23. Schedule UB (R-12/25) 10 13 22 25 26 Page 3 of 5 Illinois Department of Revenue Schedule UB *33312254W* Enter the name of the designated agent listed in Step 1. - Enter your federal employer identification number (FEIN). Step 4 — Figure your apportionment factor Complete a separate Subgroup Schedule for each Insurance Company Subgroup, Financial Organization Subgroup, Regulated Exchange Subgroup, and Transportation Company Subgroup, in order to determine the amounts to enter on Schedule UB, Step 4, Lines 2 and 3 for each member of that subgroup. A FEIN - FEIN B FEIN C Combined totals 1 Enter your combined unitary business income or loss from Step 3, Column E, Line 27 here. → 1 2 Enter the net sales everywhere. 2 3 Enter the net sales inside Illinois. 3 4 4 Apportionment factor Divide Line 3 of each Column by Line 2, Column D. (Round to six decimal places.) 5 Illinois business income or loss. . . . 5 6 Nonbusiness income or loss. 6 7 Non-unitary or combined partnership business income or loss. 7 8 Net income or loss. 8 members who are not C corporations. 9 10 Combined net income. 10 11 D . 9 Net income or loss of If the amount in Column D, Line 10 is negative, complete Lines 11 through 13. 11 Net loss from Line 8. 12 Divide Line 11 of each Column A through C, by the amount in Line 11, Column D. (Round to six decimal places.) . . . . 12 13 Allocated net loss. Multiply Line 12 by Line 10, Column D. 13 After you have completed this schedule, see the specific instructions for completing Form IL-1120, Form IL-1120-ST, or Form IL-1065 in the Schedule UB instructions. Schedule UB (R-12/25) Page 4 of 5 *33312255W* Illinois Department of Revenue chedule UB S Enter the name of the designated agent listed in Step 1. - Enter your federal employer identification number (FEIN). Step 5 — Provide your affiliated company information A B Name FEIN C Reason for exclusion (check one) 80/20 company not unitary - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Schedule UB (R-12/25) Printed by the authority of the state of Illinois - electronic only - one copy. Reset Print Page 5 of 5
Extracted from PDF file 2025-illinois-schedule-ub.pdf, last modified July 2025

More about the Illinois Schedule UB Corporate Income Tax TY 2025

We last updated the Combined Apportionment for Unitary Business Group in January 2026, so this is the latest version of Schedule UB, fully updated for tax year 2025. You can download or print current or past-year PDFs of Schedule UB directly from TaxFormFinder. You can print other Illinois tax forms here.


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Related Illinois Corporate Income Tax Forms:

TaxFormFinder has an additional 75 Illinois income tax forms that you may need, plus all federal income tax forms. These related forms may also be needed with the Illinois Schedule UB.

Form Code Form Name
Schedule UB-NLD Unitary Illinois Net Loss Deduction [OBSOLETE]
Form Subgroup Schedule (UB) Subgroup Schedule
Schedule UB-INS Tax for a Unitary Business Group with Foreign Insurer Members

Download all IL tax forms View all 76 Illinois Income Tax Forms


Form Sources:

Illinois usually releases forms for the current tax year between January and April. We last updated Illinois Schedule UB from the Department of Revenue in January 2026.

Show Sources >

About the Corporate Income Tax

The IRS and most states require corporations to file an income tax return, with the exact filing requirements depending on the type of company.

Sole proprietorships or disregarded entities like LLCs are filed on Schedule C (or the state equivalent) of the owner's personal income tax return, flow-through entities like S Corporations or Partnerships are generally required to file an informational return equivilent to the IRS Form 1120S or Form 1065, and full corporations must file the equivalent of federal Form 1120 (and, unlike flow-through corporations, are often subject to a corporate tax liability).

Additional forms are available for a wide variety of specific entities and transactions including fiduciaries, nonprofits, and companies involved in other specific types of business.

Historical Past-Year Versions of Illinois Schedule UB

We have a total of twelve past-year versions of Schedule UB in the TaxFormFinder archives, including for the previous tax year. Download past year versions of this tax form as PDFs here:


2025 Schedule UB

2025 Schedule UB - Combined Apportionment for Unitary Business Group

2024 Schedule UB

2024 Schedule UB - Combined Apportionment for Unitary Business Group

2023 Schedule UB

2023 Schedule UB - Combined Apportionment for Unitary Business Group

2022 Schedule UB

2022 Schedule UB - Combined Apportionment for Unitary Business Group

2021 Schedule UB

2021 Schedule UB Instructions

2020 Schedule UB

2020 Schedule UB Instructions

2019 Schedule UB

2019 Schedule UB Instructions

2018 Schedule UB

2016 Schedule UB, Combined Apportionment for Unitary Business Group

2017 Schedule UB

2017 Schedule UB, Combined Apportionment for Unitary Business Group

2016 Schedule UB

2016 Schedule UB, Combined Apportionment for Unitary Business Group

Combined Apportionment for Unitary Business Group 2015 Schedule UB

2015 Schedule UB, Combined Apportionment for Unitary Business Group

Schedule UB 2014 Schedule UB

2014 Schedule UB - Combined Apportionment for Unitary Business Group


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