• New Chat
  • Blog & News
  • Get access to the full feature set - secure document analysis, unlimited questions, and client and project management.

  • Sign Up
  • Login
  • © Marble Technology Inc, 2026.
    Privacy Policy&Terms of Service.
    1. Tax Library
    2. IL
    3. Illinois Administrative code
    4. Title 86
    5. Chapter I
    6. Part 100
    7. Subpart Q

    Combined Returns

    Subpart Q - Combined ReturnsSubpart Q - Combined Returns
    Subpart P - Composite ReturnsSubpart R - Payments
    Section 100.5200 - Filing of Combined ReturnsSection 100.5201 - Definitions and Miscellaneous Provisions Relating to Combined ReturnsSection 100.5205 - Election to File a Combined ReturnSection 100.5210 - Procedures for Elective and Mandatory Filing of Combined ReturnsSection 100.5215 - Filing of Separate Unitary Returns (iita Section 304(e))Section 100.5220 - Designated Agent for the Members (iita Section 304(e))Section 100.5230 - Combined Estimated Tax PaymentsSection 100.5240 - Claims for Credit of OverpaymentsSection 100.5250 - Liability for Combined Tax, Penalty and InterestSection 100.5260 - Combined Amended ReturnsSection 100.5265 - Common Taxable YearSection 100.5270 - Computation of Combined Net Income and Tax (iita Section 304(e))Section 100.5280 - Combined Return Issues Related to Audits
    Third party content may be subject to third party copyright. Content cannot be copied or reproduced except as permitted.
  • Tax LibraryNew
  • SALT Matrix