Florida vs Illinois LLC Formation 2026: Costs, Taxes & Compliance
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Introduction: Quick Verdict and Key Differentiator
Florida wins for tax efficiency; Illinois wins for operational flexibility. Florida charges $125 to form an LLC (Fla. Stat. § 605.0201) versus Illinois's $150 (805 ILCS 180/5-5), but the real difference emerges in state income taxes. Florida has zero state income tax, while Illinois imposes 4.95% on individual income and 1.5% replacement tax on partnership income (35 ILCS 5/). For single-member LLCs taxed as sole proprietorships or multi-member LLCs taxed as partnerships, this creates a substantial long-term advantage in Florida.
However, Illinois offers Series LLCs (805 ILCS 180/37-40) and Low-Profit LLCs, features Florida won't support until July 1, 2026. If you need multiple business lines under one umbrella or plan to operate a low-profit venture, Illinois provides structural advantages that offset its tax burden.
This guide compares every material dimension: formation costs, annual filing fees, tax rates, compliance deadlines, asset protection, and special entity types. Every figure and statute citation comes directly from official state data.
| Metric | Florida | Illinois | Winner |
|---|---|---|---|
| LLC Formation Fee | $125.00 (Fla. Stat. § 605.0201) | $150.00 (805 ILCS 180/5-5) | Florida (+$25 savings) |
| Annual Report Fee | $138.75 (due Jan 1–May 1) | $75.00 (due before anniversary month) | Illinois (−$63.75/year) |
| State Income Tax Rate | 0% (no income tax) | 4.95% individual; 1.5% replacement tax on pass-throughs (35 ILCS 5/) | Florida (tax-free advantage) |
| Series LLC Available | No (effective July 1, 2026) | Yes (805 ILCS 180/37-40) | Illinois (current availability) |
| Registered Agent Change Fee | $25.00 (Fla. Stat. § 605.0114) | $25.00 (805 ILCS 180/1-50) | Tie |
| Dissolution Filing Fee | $25.00 (Fla. Stat. § 605.0701) | $5.00 (805 ILCS 180/35-15) | Illinois (−$20) |
| Foreign LLC Registration Fee | $125.00 | $150.00 | Florida (+$25 savings) |
FAQ: Three Critical Questions for Florida vs Illinois LLC
How Much Does It Cost to Form and Maintain an LLC in Each State?
Florida charges $125 for LLC formation (Fla. Stat. § 605.0201) with annual reports at $138.75 due between January 1 and May 1 each year. Illinois charges $150 for formation (805 ILCS 180/5-5) with annual reports at $75 due before your anniversary month. Over five years, Florida costs $815 total; Illinois costs $525. Illinois wins on maintenance costs despite higher formation fees.
| Cost Category | Florida | Illinois | Citation |
|---|---|---|---|
| Formation Filing Fee | $125.00 | $150.00 | Fla. Stat. § 605.0201; 805 ILCS 180/5-5 |
| Annual Report Fee | $138.75 | $75.00 | Fla. Stat. § 605.0701; 805 ILCS 180/50-1 |
| Registered Agent Change | $25.00 | $25.00 | Fla. Stat. § 605.0114; 805 ILCS 180/1-50 |
| DBA Filing | $50.00 | $120.00 | Fla. Stat. § 605.0112; 805 ILCS 180/1-10 |
| 5-Year Total (Formation + 4 Annual Reports) | $815.00 | $525.00 | — |
Winner: Illinois. You save $290 over five years with Illinois's lower annual report fee ($75 vs. $138.75), even though formation costs $25 more upfront.
What Are the Tax Implications of Forming an LLC in Each State?
Florida imposes no state income tax on LLC members, making it ideal for pass-through entities. Illinois taxes individual income at 4.95% and charges partnerships/S corporations a 1.5% replacement tax on Illinois-taxable income (35 ILCS 5/). Both states impose 6% base sales tax (Florida) and 6.25% (Illinois) before local add-ons. Your federal tax treatment remains identical in both states—single-member LLCs default to Schedule C, multi-member to Form 1065.
| Tax Type | Florida | Illinois | Citation |
|---|---|---|---|
| State Income Tax Rate | 0% (No income tax) | 4.95% individual; 1.5% replacement tax (partnerships/S corps) | Fla. Stat. § 605.0201; 35 ILCS 5/ |
| Corporate Income Tax | 5.5% (if C corp election) | 7% C corp + 2.5% replacement tax | Fla. Stat. § 607.193; 35 ILCS 5/ |
| Sales Tax Rate | 6% state + county surtax | 6.25% state + local add-ons | Fla. Stat. § 605.0201; 35 ILCS 5/ |
| Franchise Tax | None | None (eliminated Jan. 1, 2025) | — |
| Default Federal Treatment (Single Member) | Disregarded entity (Schedule C) | Disregarded entity (Schedule C) | — |
| Default Federal Treatment (Multi-Member) | Partnership (Form 1065) | Partnership (Form 1065) | — |
Winner: Florida. Zero state income tax eliminates the 4.95% individual income tax and 1.5% replacement tax you'd owe in Illinois. For a $100,000 profit, you save $4,950–$5,950 annually in Florida.
What Happens If You Miss the Annual Report Deadline in Each State?
Florida imposes a $400 late penalty after May 1 and administratively dissolves your LLC on the fourth Friday in September if the report remains unfiled (Fla. Stat. § 605.0701). Illinois charges a $100 penalty after 60 days and administratively dissolves or revokes the LLC if unfiled 120 days from the due date (805 ILCS 180/50-5). Both states require reinstatement fees ($100 in Florida, $200 in Illinois) plus delinquent fees to restore good standing.
| Deadline Consequence | Florida | Illinois | Citation |
|---|---|---|---|
| Due Date | January 1–May 1 annually | Before first day of anniversary month | Fla. Stat. § 605.0701; 805 ILCS 180/50-1 |
| Late Penalty | $400 after May 1 | $100 after 60 days grace period | Fla. Stat. § 605.0701; 805 ILCS 180/50-5 |
| Grace Period | 0 days | 60 days | — |
| Administrative Dissolution Timeline | Fourth Friday in September if unfiled | 120 days from delinquency | Fla. Stat. § 605.0701; 805 ILCS 180/50-5 |
| Reinstatement Fee | $100.00 | $200.00 | Fla. Stat. § 605.0701; 805 ILCS 180/50-5 |
| Reinstatement Requirements | File reinstatement application, current annual report, all delinquent fees and penalties | File reinstatement application, pay reinstatement fee, pay all delinquent fees and penalties | Fla. Stat. § 605.0701; 805 ILCS 180/50-5 |
Winner: Illinois. You get a 60-day grace period before penalties kick in, versus Florida's immediate $400 penalty after May 1. However, Florida's earlier deadline (May 1 vs. anniversary month) suits calendar-year businesses better.
Master Comparison Table: All Dimensions — Florida vs Illinois LLC
Formation Fees and Timeline
Florida charges $125 for LLC formation with variable processing times depending on workload, while Illinois charges $150 with approximately 10 business days for standard online filings. Illinois offers expedited 24-hour service for an additional $100 fee. Both states allow online filing and accept single-member LLCs with foreign ownership. Florida's lower base fee makes it more cost-effective for standard formation, but Illinois's predictable timeline may justify the premium for time-sensitive filers.
| Dimension | Florida | Illinois |
|---|---|---|
| Formation Document | Articles of Organization (Fla. Stat. § 605.0201) | Articles of Organization (805 ILCS 180/5-5) |
| Filing Fee | $125.00 | $150.00 |
| Expedited Fee | Not available | $100.00 (24-hour service) |
| Standard Processing Time | Variable by workload | ~10 business days |
| Online Filing | Yes (https://dos.fl.gov/sunbiz/start-business/efile/fl-llc/) | Yes (https://apps.ilsos.gov/llcarticles/index.jsp) |
| Minimum Members | 1 (Fla. Stat. § 605.0201) | 1 (805 ILCS 180/5-5) |
| Foreign Owners Allowed | Yes | Yes |
| Effective Date Choice | Yes | Yes |
| Winner | Florida — $25 lower filing fee with no expedited option needed |
LLC Naming Requirements
Both states require an LLC designator (LLC, L.L.C., or Limited Liability Company) and enforce distinguishability standards against existing filings. Illinois restricts use of words like "Corporation," "Bank," "Trust," and "Insurance" (805 ILCS 180/1-10), while Florida has no specified restricted words under Fla. Stat. § 605.0112. Illinois offers 90-day name reservations for $25;