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Advisory | September 16, 2026

Your Client Has 501(c)(3) Status. Is Its Illinois Real Estate Exempt?

State sales tax exemptions and property tax exemptions, often do not flow with federal public charity status.

Jake A Leahy

A nonprofit client receives a building as a gift. The organization has an IRS determination letter recognizing its section 501(c)(3) status. It plans to rent the building and use the proceeds to support its charitable programs. Should the property tax line in the budget be zero?

Probably not. Federal recognition of an organization’s tax-exempt status does not establish that its Illinois real estate is exempt. Neither does nonprofit incorporation or an Illinois sales tax exemption number. Illinois applies separate requirements to property tax exemption.

For the CPA, the useful question is much broader than whether a client is exempt. State sales tax exemptions and property tax exemptions, often do not flow with federal public charity status.

The organization and its property present different questions

Illinois’ charitable property tax exemption generally requires qualifying ownership, actual and exclusive charitable or beneficent use, and no lease or other use with a view to profit. Those requirements concern the organization and the particular property. A federal determination letter does not establish them all. 35 ILCS 200/15-65. 

In Eden Retirement Center, Inc. v. Department of Revenue, the Illinois Supreme Court rejected an interpretation under which federal exempt status and a bylaw permitting fee reductions or waivers were sufficient to establish the claimed exemption. The constitutional requirement of actual charitable use remained. And as the court reasoned, “taxation is the rule-tax exemption is the exception.” 

The practical consequence is straightforward: the determination letter belongs in the file, but the review cannot stop there.

“The income supports our mission” is not enough

A building used to generate commercial rent does not become charitable-use property solely because the owner spends the income on its charitable programs. The activity conducted on the property matters, not just the destination of the proceeds.

The Illinois Supreme Court addressed that distinction in Turnverein “Lincoln” v. Board of Appeals of Cook County. Commercial rental activity did not become exempt merely because the receipts supported the organization’s purposes. Nor did the absence of a net profit resolve the question

That does not mean every charge defeats exemption. In First United Methodist Church, Pekin, Illinois v. Department of Revenue, the Fourth District upheld a charitable exemption for a residence used in a subsidized housing ministry. Modest rent and reasonable conditions were evaluated in the context of the charitable program.

Make the review property specific

A useful review starts with a schedule of the client’s real estate. For each property, identify the legal owner, current occupants, actual activities, leases, and existing exemption determination. Separate a building used to provide the charitable service from a building held as an investment to finance that service.

The accounting records can help explain the difference. What charges are collected? Who receives them? How are operating costs funded? What subsidies or assistance are provided? The objective should be to connect the financial information to what actually happens at the property, rather than relying on organization wide totals.

A separate application may also be necessary. IDOR directs charitable organizations to Form PTAX-300 and requires supporting information concerning ownership, use, and leases. The ordinary process begins with the county board of review and proceeds to IDOR for a determination.

For an existing client, a new acquisition, tenant, or use is a good occasion to revisit the file. Treat that review as an advisory practice, not an assumption that the federal determination letter answers every later property question.

501(c)(3) determination is important evidence of the organization’s federal status. It is not a blanket exemption for its Illinois real estate.

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Jake A. Leahy is a tax attorney at Airdo Werwas, LLC in Chicago. He holds an LL.M. in Taxation from the Georgetown University Law Center and a J.D. from the University of Illinois Chicago School of Law. He represents closely-held businesses, local governments, and exempt organizations.

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