Compare Business Types in Illinois
Side-by-side comparison of all business entity types. Find the best structure for your Illinois business.
Want this turned into your personalized business roadmap for Illinois?
Sign up free — we'll track every step, deadline, and what comes after the LLC.
| Feature | Corporation | LLC | Nonprofit | Partnership | S-Corp |
|---|---|---|---|---|---|
| Filing Fee | $175 | $150 | $39 | $0 | $175 |
| Processing Time | 7-10 business days | 10-15 business days | 10-15 business days | Immediate (no state filing required) | 7-10 business days |
| Annual Tax | — | — | — | — | — |
| Registered Agent | Required | Required | Required | Optional | Required |