Question 1

Is 4099 Mount Prospect Illinois a tax-exempt 501(c)(3)?

Accepted Answer

Yes — 4099 Mount Prospect Illinois is recognised by the IRS as a 501(c)(5) organisation (EIN 36-6205701). The IRS recognised 4099 Mount Prospect Illinois as tax-exempt in September 1944.

Question 2

What is 4099 Mount Prospect Illinois's EIN?

Accepted Answer

4099 Mount Prospect Illinois's Employer Identification Number (EIN) is 36-6205701. The EIN was assigned by the IRS in September 1944. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.

Question 3

What does 4099 Mount Prospect Illinois do?

Accepted Answer

Labor union

Question 4

Where is 4099 Mount Prospect Illinois located?

Accepted Answer

4099 Mount Prospect Illinois is located at 300 w central, mount prospect, IL, 60056.

Question 5

When was 4099 Mount Prospect Illinois founded or recognised by the IRS?

Accepted Answer

4099 Mount Prospect Illinois was recognised by the IRS as a tax-exempt organisation in September 1944. The IRS ruling date is the earliest authoritative date available for most US nonprofits.

Question 6

What is 4099 Mount Prospect Illinois's annual revenue?

Accepted Answer

On its most recent Form 990 (fiscal year 2025), 4099 Mount Prospect Illinois reported $32K in total revenue and $28K in total expenses.

Question 7

Has 4099 Mount Prospect Illinois been auto-revoked by the IRS?

Accepted Answer

No — 4099 Mount Prospect Illinois (EIN 36-6205701) does not appear on the IRS Auto-Revocation List. Givalgo Discover cross-references the IRS Auto-Revocation List on every profile load; if status changes, this page reflects it.

Question 8

Is 4099 Mount Prospect Illinois listed in IRS Publication 78?

Accepted Answer

Givalgo Discover did not find 4099 Mount Prospect Illinois in the most recent IRS Publication 78 download. Some tax-exempt organisations (e.g., churches and government instrumentalities) are eligible to receive deductible contributions without appearing in Pub 78 — verify directly with the IRS if uncertain.

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4099 Mount Prospect Illinois

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