Arizona LLC vs Illinois LLC (2026)
Compare Arizona LLC vs Illinois LLC on filing fees, taxes, privacy laws, and annual costs. Find out which state is actually better for your business.
By Edmond Hui · Last updated: August 13, 2026
Verdict: Arizona wins for most businesses
For most Arizona-based businesses, forming locally in Arizona is the smarter choice. You avoid paying fees in two states and managing compliance in both. Illinois only makes sense if your business genuinely operates there, and even then the total costs deserve a hard look.
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| Factor | Arizona | Illinois |
|---|---|---|
| Filing Fee | $50 | $150 |
| Processing Time | Live queue, not fixed | Not published by the state |
| Annual Report Fee | $0 | $75 |
| Annual Report Due | None required | Before 1st of anniversary month |
| State Income Tax | Yes | Yes |
| Anonymous LLC | No | No |
| Publication Requirement | Yes (waived in Maricopa & Pima counties) | No |
| Foreign LLC Cost (if forming out-of-state) | N/A, you're in your home state | $150 + registered agent ~$150/yr |
Full fee breakdown for either state: Arizona LLC cost and Illinois LLC cost.
Business Climate: Arizona vs Illinois
| Factor | Arizona | Illinois |
|---|---|---|
| 5-year business survival rate | 52.1% (#22 of 51) | 55.6% (#3 of 51) |
| Business application growth (2026 YTD (Jan to Jul) vs 2025 YTD (same months)) | +23.9% YoY (#13 of 51 by volume) | +7.7% YoY (#7 of 51 by volume) |
Sources: U.S. Bureau of Labor Statistics, Business Employment Dynamics · U.S. Census Bureau, Business Formation Statistics (BFS)
Compare LLC Costs: Arizona vs Illinois
Arizona
Illinois
Costs include every mandatory state charge: the filing fee, the report fee (annualised where a state files biennially), any state entity-level tax shown in its own row above, a one-time publication cost where a state requires publication, and any one-time registration charge a state requires before the LLC may trade. Annualising makes the 1, 3 and 5 year rows a cost of ownership rather than a payment schedule: a biennial state charges its whole report fee in the years it falls due and nothing in between. Entity-level taxes that only apply after a corporate election, or above an owner or income threshold, are excluded and flagged on the state's own cost page. New York's publication cost is carried at a $250 floor, roughly $200 of newspaper cost in a low-cost county plus the $50 Certificate of Publication fee. No county-clerk-designated New York City newspaper publishes a rate card, so the four-figure NYC estimates in wide circulation cannot be traced to a primary source and are not asserted here; budget for materially more than the floor if you file in a NYC county. Montana's annual report is free when filed by April 15 and $35 after, a waiver the Secretary of State applies at its discretion. Every fee was verified against the state's own fee schedule, statute, or revenue authority on 29 July 2026. Excludes registered agent and legal fees. For informational purposes only, not legal or tax advice.
Filing Fees & Formation Costs
Arizona charges $50 to form an LLC, while Illinois charges $150. Arizona is $100 cheaper upfront. The cost that usually gets overlooked: if you form in Illinois but operate in Arizona, you must also register as a foreign LLC in Arizona (a $150 filing) and maintain a registered agent in Illinois (typically around $150 per year). That puts the realistic first-year cost of the Illinois route at roughly $450, versus $50 for simply forming in Arizona. Note that Arizona also requires newly formed LLCs to publish a newspaper notice (Arizona requires a notice of the filing to be published for three consecutive publications in a newspaper in the county of the statutory agent's address, unless that county's population exceeds 800,000, currently Maricopa and Pima, in which case the Corporation Commission posts the notice itself, free of charge), which adds to the true formation cost. Speed isn't a basis for choosing between them: neither Arizona nor Illinois publishes a standard processing time, so any figure comparing the two is guesswork.
Taxes: Arizona vs Illinois
Both Arizona and Illinois levy a personal income tax on pass-through business income, and your LLC's profits will be taxed where you live and operate. Forming in Illinois doesn't change what an Arizona-based owner pays. Arizona levies a personal income tax (flat 2.5%). Illinois levies a flat 4.95% personal income tax. Neither state imposes a separate franchise or privilege tax on LLCs beyond standard filing fees.
Privacy & Asset Protection
Neither Arizona nor Illinois offers anonymous LLC formation: both states require owner or manager information on public filings. Illinois doesn't permit anonymous LLC formation; management is disclosed on public filings. Business owners who prioritize privacy typically form a holding company in a state like Wyoming or New Mexico instead. Both states provide charging-order protection for LLC members, and for most small businesses the practical difference in asset protection between the two is minimal.
Annual Maintenance Costs
Arizona LLCs file no annual report at all, and Illinois LLCs file an annual report ($75, due in the anniversary month). If you form in Illinois while operating in Arizona, you maintain filings in both states, Illinois's report plus Arizona's equivalent for your foreign registration, and pay an Illinois registered agent roughly $150 per year. That brings ongoing costs of the Illinois route to roughly $225 per year, versus about $0 to keep a domestic Arizona LLC in good standing.
When Illinois Actually Makes Sense
Forming in Illinois makes sense in a few specific situations: your business genuinely operates in Illinois, with a real office, employees, or property there, or you're relocating to Illinois in the near future. For a typical small business based in Arizona, none of these usually apply. Registering an Illinois LLC to do business back home means $150 in Arizona foreign-registration fees, on top of Illinois's $150 formation fee, while Arizona itself never asks for an annual report at all. Trading Arizona's no-annual-report status for Illinois's filing calendar is a step backwards for most owners. When in doubt, form where you actually do business.
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