Nonprofit Compliance

Illinois Nonprofit Compliance Calendar

Every IRS and Illinois filing deadline a 501(c)(3) needs to track — what's due, when, and what happens if you miss it.

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Filings tracked

May 15

Next key deadline

3/1

Federal / state

⚠

Miss filings 3 yrs → auto loss of tax-exempt status

Federal (3) Illinois (1) Check registration status ↗

Federal filings (IRS)

Federal 990 / 990-EZ / 990-N / 990-PF

IRS Form 990 series — annual information return

Due: 15th day of 5th month after fiscal year end (May 15 calendar-year)
3 consecutive years unfiled = AUTOMATIC loss of tax-exempt status.
Filing details →
Federal 8868

Form 8868 — automatic 6-month extension

Due: On or before the original 990 due date
Extends 990 deadline 6 months (Nov 15 calendar-year).
Filing details →
Federal 941

Form 941 — quarterly payroll tax

Due: Apr 30, Jul 31, Oct 31, Jan 31
Penalties + interest on late deposits.
Filing details →

Illinois state filings

Illinois AG990-IL

Form AG990-IL — Charitable Org Annual Report (AG)

Due: 6 months after fiscal year end (Jun 30 calendar-year)
Penalties; AG enforcement.
Filing details →

Check Illinois charity registration status →

Illinois requirements overview

Registration: File Articles of Incorporation with the Illinois Secretary of State (Form NFP 102.10). Apply for state tax exemption with the Illinois Department of Revenue.

Annual filing: File Annual Report with the Illinois Secretary of State (due before anniversary month, no fee for nonprofits). File AG990-IL with the Illinois Attorney General if registered for charitable solicitation (due 6 months after fiscal year-end). File IRS Form 990 series annually.

Solicitation: Register with the Illinois Attorney General's Charitable Trust Bureau (Form CO-1, $15 fee) before soliciting. File annual AG990-IL financial report. Professional fundraisers must also register separately.

Nonprofit banking in Illinois → Best banks for nonprofits → Donation receipt generator → Fund accounting tracker →

Informational only — not legal or tax advice. Deadlines reflect general rules and may not capture every exception for your organization. Always verify with your state charity regulator and the IRS. Holdings' bookkeeping tracks these for you.