Keywords: Illinois Senate, corporate income tax, disclosure legislation

The Illinois Senate has advanced legislation that requires publicly traded companies to make certain tax information subject to public disclosure. The legislation now awaits action by the Illinois House of Representatives, which may occur as early as next week during the Illinois General Assembly's veto session. If enacted, the new law would require public disclosure of tax information that heretofore has been confidential under federal and state law. The legislation would exempt from public disclosure only information that is required to be kept confidential by federal law.

On November 28, 2012, the Illinois Senate passed Senate Bill 282, which requires publicly traded companies that are treated as corporations for tax purposes and that do business in the State of Illinois, as well as their majority-owned subsidiaries that do business in Illinois, to file tax disclosure statements on an annual basis with the Illinois Secretary of State. Once filed, the tax disclosure statements will be compiled by the Secretary of State in a publicly available, searchable, Internet-based database.

The tax disclosure statements would require disclosure of the following information, based on the company's Illinois state income tax return:

  • The company's name, address of its principal office, and other identifying information;
  • The identity of any company that owns 50 percent or more of the filing company's voting stock; and
  • Information that is used by the company in preparing Illinois state tax return, such as (i) its taxable income and net income, (ii) its income base, (iii) the apportionment factor in Illinois, (iv) the total business income that is apportioned to Illinois, (v) the Illinois net operating loss deduction, if any, (vi) the total non-business income and the amount of non-business income allocated to Illinois, (vii) the total Illinois income tax liability before any applicable tax credits, (viii) the total personal property tax replacement tax liability before any applicable tax credits, (ix) the tax credits claimed, with each credit specifically enumerated, and (x) the net personal property tax replacement tax and the net corporate income tax owed by the company.

In addition, the information that will be disclosed in the tax disclosure statement must be updated within 60 days of filing an amended federal or Illinois state income tax return.

If a company is required to file a tax disclosure statement, but is not required to file an Illinois state income tax return, the company must still file the tax disclosure statement with certain identifying information, an explanation of why the company is not required to file an Illinois state income tax return, and information with respect to the company's annual gross receipts.

The legislation exempts from disclosure information that "is confidential and may not be disclosed" under the federal tax code or any other federal statute.

The tax disclosure statements will be subject to audit by the Illinois Department of Revenue. Failure to provide an accurate and timely tax disclosure statement may result in civil penalties against both the company and the company's chief operating officer.

With adoption of the legislation by the Illinois Senate, the Illinois House of Representatives may take action as early as next week during the General Assembly's veto session.

Learn more about Senate Bill 282.

Originally published on November 30, 2012

Visit us at

Mayer Brown is a global legal services provider comprising legal practices that are separate entities (the "Mayer Brown Practices"). The Mayer Brown Practices are: Mayer Brown LLP and Mayer Brown Europe – Brussels LLP, both limited liability partnerships established in Illinois USA; Mayer Brown International LLP, a limited liability partnership incorporated in England and Wales (authorized and regulated by the Solicitors Regulation Authority and registered in England and Wales number OC 303359); Mayer Brown, a SELAS established in France; Mayer Brown JSM, a Hong Kong partnership and its associated entities in Asia; and Tauil & Chequer Advogados, a Brazilian law partnership with which Mayer Brown is associated. "Mayer Brown" and the Mayer Brown logo are the trademarks of the Mayer Brown Practices in their respective jurisdictions.

© Copyright 2012. The Mayer Brown Practices. All rights reserved.

This Mayer Brown article provides information and comments on legal issues and developments of interest. The foregoing is not a comprehensive treatment of the subject matter covered and is not intended to provide legal advice. Readers should seek specific legal advice before taking any action with respect to the matters discussed herein.