Deadline reminders › Illinois
Illinois · ILWe track 7 Illinois deadlines plus 17 federal ones, and email you before each one that applies to your business.
Every row links to the agency that sets the deadline. Answer a few questions once and only the ones that apply to your business are scheduled.
| Deadline | Who it hits | When | Official source |
|---|---|---|---|
| Illinois annual report | Every Illinois LLC and corporation, domestic or foreign, on the Secretary of State register | On your own renewal date | Illinois General Assembly - 805 ILCS 180/50-1 |
| Illinois sales tax return (Form ST-1) - monthly filer | Illinois retailers registered for the Retailers' Occupation Tax and filing monthly | Every January 20 | Illinois Department of Revenue - Retailers' Occupation Tax |
| Illinois sales tax return (Form ST-1) - quarterly filer | Illinois retailers registered for the Retailers' Occupation Tax and assigned quarterly filing | Every April 20 | Illinois Department of Revenue - Retailers' Occupation Tax |
| Illinois unemployment insurance report (UI-3/40) - Q1 | Any Illinois employer liable for unemployment insurance contributions | Every April 30 | Illinois Department of Employment Security - Quarterly Filing Requirements |
| Illinois unemployment insurance report (UI-3/40) - Q2 | Any Illinois employer liable for unemployment insurance contributions | Every July 31 | Illinois Department of Employment Security - Quarterly Filing Requirements |
| Illinois unemployment insurance report (UI-3/40) - Q3 | Any Illinois employer liable for unemployment insurance contributions | Every October 31 | Illinois Department of Employment Security - Quarterly Filing Requirements |
| Illinois unemployment insurance report (UI-3/40) - Q4 | Any Illinois employer liable for unemployment insurance contributions | Every January 31 | Illinois Department of Employment Security - Quarterly Filing Requirements |
Plus 17 federal deadlines: estimated taxes, the annual return matched to your entity, and the employer filings if you hire.
These are the official pages behind the deadlines above. Always confirm a requirement with the agency itself.
Entity type, filing frequency, license dates, whether you have employees or subs. Two minutes, changeable anytime.
Only the Illinois and federal deadlines that apply to your business, each with the official agency link.
You pick the lead time (default 14 days). The email says what is due, when, and where to file. That is the whole product.
Contractor Lane sends informational reminders with official source links. It is not legal, tax, licensing, insurance, or accounting advice, and it does not file anything for you. You remain responsible for every filing. Deadlines change — confirm with the agency.
We track 7 Illinois deadlines plus 17 federal ones, and email you before each one that applies to your business.
No. The Illinois-specific reminders only fire if they apply to your business. Every Illinois small business gets the federal layer regardless of trade.
No, and that's deliberate. It reminds you ahead of each deadline with the official source link. You (or your bookkeeper) file. It replaces the sticky note, not the CPA.
One button on your settings page. It cancels in Stripe immediately, no email chains, no phone call.