Is it cheaper to form an LLC in California or Illinois?

California is cheaper at formation ($70) than Illinois ($150). Ongoing costs are also different: $910 vs $175 per year. Total over three years: $2,800 vs $675.

Can I form an LLC in California if I live in Illinois?

Yes, but your Illinois business will almost certainly need to register as a foreign LLC in Illinois too, which means paying Illinois's foreign registration fee and any ongoing Illinois obligations on top of the California ones. The "form elsewhere to save" math usually doesn't work for operating businesses; it only works when you have no physical operations tied to any specific state.

How long does it take to form an LLC in California vs Illinois?

California online: 8 business days; Illinois online: 10 business days. California offers paid expedite from $350. Illinois offers paid expedite from $100.

Which state has lower taxes for an LLC, California or Illinois?

California: state income tax applies to member-level pass-through income, plus a $800 minimum entity-level tax. Illinois: state income tax applies to member-level pass-through income, no entity-level franchise or LLC tax.

Do both states require a registered agent?

Yes. Every US state (and DC) requires every LLC to maintain a registered agent with a physical street address in the state. California and Illinois both have this requirement. You can serve as your own agent if you live in the state; most out-of-state filers use a commercial agent for $50 to $125 per year.

Do I need a written operating agreement in California or Illinois?

California requires LLCs to adopt a written operating agreement by statute. Illinois treats it as strongly recommended rather than required. In practice, any LLC with more than one member, or any LLC planning to preserve its liability shield, should have a written agreement regardless of which state it's formed in.

Which state should I pick if I run an online business from home?

Form in the state you actually live in. Your home state's Department of Revenue treats your residence as nexus regardless of where the LLC is filed, which means you owe state income tax there anyway. Forming in California or Illinois to escape your home state's tax doesn't work; it adds paperwork. The non-resident filings make sense when you genuinely operate nowhere in particular: international founders, purely passive holding entities, or real-estate LLCs owning property in other states.

California vs Illinois LLC comparison

California charges $70 to form an LLC; Illinois charges $150. Day-one sticker price is only part of the story, since most of the real cost comes from the annual obligations that stack up each year you keep the LLC open.

Over a rolling three-year window, Illinois runs about $2,125 less in total state fees than California. Whether that gap matters depends on whether you actually operate in one of these states or are weighing a non-resident filing.

California imposes an entity-level annual tax on every LLC ($800 minimum). Illinois does not. For pass-through LLCs that would otherwise owe nothing at the state level, that minimum is the deciding line.

On speed, California typically clears standard online filings faster than Illinois. Both states offer expedited tiers at an additional cost for filers on tight timelines.

For most small operators the choice is not really between these two states at all. It is between forming where the business actually operates and trying to route through a non-resident filing. The data below shows what each option actually costs.

Formation filing fee

California $70

Illinois $150

California saves $80

Year 1 total estimate

California $980

Illinois $325

Illinois saves $655

Ongoing per year

California $910

Illinois $175

Illinois saves $735

3-year total

California $2,800

Illinois $675

Illinois saves $2,125

Key differences at a glance

California costs $80 less to form ($70 vs $150).
Illinois is $735 per year cheaper to maintain ($175 vs $910).
California imposes an entity-level franchise or LLC tax that applies to pass-through LLCs. Illinois does not.
California requires LLCs to adopt a written operating agreement by statute. The other state treats it as recommended rather than required.

Where each state fits

For most filers, forming in the state you actually operate from is the right call. The side-by-side below shows where the two states meaningfully diverge.

What each state offers that the other does not

Only Illinois

No entity-level franchise or LLC tax
Operating agreement not statutorily required

Both states

Online filing
Paid expedited tier
No publication requirement

Three-year cost, side by side

Rough estimate of the state-facing cost to form and keep an LLC through three years. Both totals include a $100 per year registered-agent estimate.

California Illinois

Year 1

$980

$325

Year 2

$1,890

$500

Year 3

$2,800

$675

Running total includes the one-time filing fee and annual ongoing costs (report fee or franchise tax plus a $100/year registered agent estimate).

What it costs under your specific situation

The table below runs the same LLC through four common scenarios. "Non-resident" rows assume a typical home-state foreign LLC registration adds about $200 per year of stacked cost; the real number depends on which state you live in and ranges from $50 to over $800 depending on jurisdiction.

Scenario	Year 1	Each year after	3-year total
You live in California, business operates there No foreign LLC registration needed. You pay California fees only.	$980	$910	$2,800
You live in Illinois, business operates there No foreign LLC registration needed. You pay Illinois fees only.	$325	$175	$675
Non-resident forming in California with operations elsewhere You pay California's fees plus a typical home-state foreign LLC registration of about $200 per year.	$1,180	$1,110	$3,400
Non-resident forming in Illinois with operations elsewhere You pay Illinois's fees plus a typical home-state foreign LLC registration of about $200 per year.	$525	$375	$1,275

California vs Illinois: full comparison

Dimension	California	Illinois
Online filing Can you file the formation document online?	Yes	Yes
Online approval time Standard, non-expedited	8 business days	10 business days
Expedited option Paid fast-track filing	$350	$100
Annual report Required in addition to tax	Required, $20	Required, $75
State-imposed annual tax Franchise, privilege, or LLC tax minimum	$800 minimum	None
State income tax On pass-through LLC income at member level	Yes	Yes
Publication requirement Newspaper publication after formation	No	No
Operating agreement Required by state statute	Required by statute	Recommended, not required
Foreign LLC fee Cost to register as a foreign LLC in this state	$70	$150
State sales tax General statewide rate	7.3%	6.3%

Taxes in California and Illinois

How each state handles entity-level tax on LLCs. Pass-through classification means member-level income tax also applies at each member's residence state.

California tax

$800 minimum annual tax (gross-receipts-tiered basis). State income tax applies to member-level pass-through income. Corporate rate 8.8%.

Illinois tax

No entity-level franchise tax on LLCs. State income tax applies to member-level pass-through income. Corporate rate 7.0%.

Ongoing compliance

The recurring filings each state requires after formation.

California

Annual report $20, due on your anniversary month. Registered agent required in California.

Illinois

Annual report $75, due on your anniversary month. Registered agent required in Illinois.

Formation process, side by side

What actually happens from the moment you start filing to the moment you're in good standing. Use this as a checklist.

California

Check business-name availability on the California entity search.
Appoint a registered agent with a physical California street address.
File Articles of Organization (Form LLC-1) for $70.
Wait for approval. Online typically 8 business days. Paid expedite from $350.
Adopt a written operating agreement (statutorily required in California).
Apply for a federal EIN (free from the IRS).
Open a business bank account to separate personal and business finances.
File your first annual report and pay $20 when it comes due.

Illinois

Check business-name availability on the Illinois entity search.
Appoint a registered agent with a physical Illinois street address.
File Form LLC-5.5 - Articles of Organization for $150.
Wait for approval. Online typically 10 business days. Paid expedite from $100.
Adopt an operating agreement (recommended, not required by Illinois statute).
Apply for a federal EIN (free from the IRS).
Open a business bank account to separate personal and business finances.
File your first annual report and pay $75 when it comes due.

Before you pick either state

A few things that apply no matter which state you choose. These trip up enough first-time filers that they're worth stating explicitly.

Registered agent is non-negotiable. Both California and Illinois (and every other US state) require every LLC to designate a registered agent with a physical street address in the state of formation. You can serve as your own agent if you live in the state; otherwise a commercial agent runs $50 to $125 per year. Using your own home address makes it part of the public record.

Forming elsewhere does not escape your home state's tax. If you live and operate a business from your home state, forming the LLC in California or Illinois does not avoid your home state's income tax. The moment you transact business at home, your home state requires a foreign LLC registration, and state tax liability follows your residence regardless of where the entity sits on paper.

EIN applications are free. The IRS issues Employer Identification Numbers directly at no cost. Any service charging you to "get your EIN" is reselling a free form submission. Single-member LLCs with no employees technically don't need one for federal tax, but nearly every bank requires an EIN to open a business account.

Operating agreement matters more than the state you pick. A well-drafted operating agreement governs member ownership, management, profit splits, buy-sell terms, and dissolution. Without one, your LLC runs on the state's default rules, which are rarely what you want. California, Maine, Missouri, and New York require a written one by statute; every other state treats it as strongly recommended.

Agency contacts

California Secretary of State, Business Programs Division

Website: www.sos.ca.gov/business-programs/business-entities
Phone: (916) 653-6814
Mail: 1500 11th Street, Sacramento, CA 95814
Hours: 8:00 AM to 5:00 PM Pacific, Monday to Friday (excluding state holidays)

Illinois Secretary of State, Department of Business Services

Website: www.ilsos.gov/departments/business_services/home.html
Phone: (217) 524-8008
Mail: Limited Liability Division, 501 S. Second St., Room 351, Springfield, IL 62756
Office: 501 S. Second St., Room 351, Springfield, IL 62756
Hours: 8:00 AM to 4:30 PM Central, Monday to Friday

California Franchise Tax Board

Website: www.ftb.ca.gov
Phone: (800) 852-5711
Mail: Franchise Tax Board, P.O. Box 942857, Sacramento, CA 94257-0531
Office: 9646 Butterfield Way, Sacramento, CA 95827
Hours: 8:00 AM to 5:00 PM Pacific, Monday to Friday

Illinois Department of Revenue

Website: tax.illinois.gov
Phone: (800) 732-8866
Mail: 101 West Jefferson Street, Springfield, IL 62702
Office: 555 West Monroe, Suite 1100, Chicago, IL 60661
Hours: 8:30 AM to 5:00 PM Central, Monday to Friday

Frequently Asked Questions

Is it cheaper to form an LLC in California or Illinois?

California is cheaper at formation ($70) than Illinois ($150). Ongoing costs are also different: $910 vs $175 per year. Total over three years: $2,800 vs $675.
Can I form an LLC in California if I live in Illinois?

Yes, but your Illinois business will almost certainly need to register as a foreign LLC in Illinois too, which means paying Illinois's foreign registration fee and any ongoing Illinois obligations on top of the California ones. The "form elsewhere to save" math usually doesn't work for operating businesses; it only works when you have no physical operations tied to any specific state.
How long does it take to form an LLC in California vs Illinois?

California online: 8 business days; Illinois online: 10 business days. California offers paid expedite from $350. Illinois offers paid expedite from $100.
Which state has lower taxes for an LLC, California or Illinois?

California: state income tax applies to member-level pass-through income, plus a $800 minimum entity-level tax. Illinois: state income tax applies to member-level pass-through income, no entity-level franchise or LLC tax.
Do both states require a registered agent?

Yes. Every US state (and DC) requires every LLC to maintain a registered agent with a physical street address in the state. California and Illinois both have this requirement. You can serve as your own agent if you live in the state; most out-of-state filers use a commercial agent for $50 to $125 per year.
Do I need a written operating agreement in California or Illinois?

California requires LLCs to adopt a written operating agreement by statute. Illinois treats it as strongly recommended rather than required. In practice, any LLC with more than one member, or any LLC planning to preserve its liability shield, should have a written agreement regardless of which state it's formed in.
Which state should I pick if I run an online business from home?

Form in the state you actually live in. Your home state's Department of Revenue treats your residence as nexus regardless of where the LLC is filed, which means you owe state income tax there anyway. Forming in California or Illinois to escape your home state's tax doesn't work; it adds paperwork. The non-resident filings make sense when you genuinely operate nowhere in particular: international founders, purely passive holding entities, or real-estate LLCs owning property in other states.

Full state guides

CaliforniaOpen California LLC guide →
IllinoisOpen Illinois LLC guide →

More California and Illinois comparisons

More California vs ...

More Illinois vs ...

Sources

Filing fee: bpd.cdn.sos.ca.gov/llc/forms/llc-1.pdf · verified April 21, 2026
California Secretary of State Form LLC-1 Articles of Organization. Filing fee of $70 is printed on the form instructions. Cal. Gov. Code §12190 and §17702.01 authorize the fee.
Expedited filing: www.sos.ca.gov/business-programs/business-entities/service-options · verified April 21, 2026
California Secretary of State offers preclearance and expedited filing services. Over-the-counter 24-hour expedited service is $350; same-day service is $750; 4-hour service is $500 for paper over-the-counter drop-off. Online bizfile filings are typically processed in a few business days without a separate expedite fee.
Annual report fee: www.sos.ca.gov/business-programs/business-entities/statements · verified April 21, 2026
Statement of Information (Form LLC-12) for LLCs. $20 filing fee. First filing due within 90 days of formation, then biennially by the end of the formation-anniversary month. Cal. Corp. Code §17702.09.
Franchise tax: www.ftb.ca.gov/file/business/types/limited-liability-company/index.htm… · verified April 21, 2026
California Franchise Tax Board LLC guidance. $800 annual minimum franchise tax under Cal. Rev. & Tax. Code §17941, due by the 15th day of the 4th month after the beginning of the tax year. Annual LLC fee under §17942 applies on total California-sourced income: $900/$2,500/$6,000/$11,790 for tiers starting at $250k, $500k, $1M, and $5M respectively.
Franchise tax: leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum… · verified April 21, 2026
Cal. Rev. & Tax. Code §17942 sets the gross-receipts LLC fee tiers. §17941 sets the $800 minimum franchise tax. Confirm current-year tier values on the FTB site before filing.
Operating agreement requirement: leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum… · verified April 21, 2026
Cal. Corp. Code §17701.02(s) defines 'operating agreement' and §17701.10 governs its scope; the California Revised Uniform Limited Liability Company Act (RULLCA) operates on the assumption that every LLC has an operating agreement (oral, written, or implied). Statute does not mandate a written, filed agreement, but the RULLCA regime is premised on one existing; California is widely characterized as an 'operating agreement required' state. Members rely on default statutory rules if no agreement is adopted.
Foreign LLC registration fee: bpd.cdn.sos.ca.gov/llc/forms/llc-5.pdf · verified April 21, 2026
Form LLC-5 Application to Register a Foreign LLC. Filing fee $70. Foreign LLCs are subject to the same $800 annual franchise tax and Statement of Information requirements as domestic LLCs.
Publication requirement: www.sos.ca.gov/business-programs/business-entities/forms · verified April 21, 2026
California does not require newspaper publication for LLC formation. Confirmed via absence of requirement in Cal. Corp. Code §17702.01 and the SoS LLC filing instructions.
Business name search: bizfileonline.sos.ca.gov/search/business · verified April 21, 2026
California bizfile Online business search tool. Confirm name availability before filing Articles of Organization.
Sales tax rate: www.cdtfa.ca.gov/taxes-and-fees/sut-rates-description.htm · verified April 21, 2026
California Department of Tax and Fee Administration: statewide base sales and use tax rate is 7.25% (6.00% state + 1.25% uniform local). Combined rates with district taxes range from 7.25% to over 10.75% in some jurisdictions.
Corporate income tax rate: www.ftb.ca.gov/file/business/types/corporations/index.html · verified April 21, 2026
California corporate franchise tax rate is 8.84% on net income for C-corporations. Applies to LLCs electing C-corp treatment; otherwise LLCs flow through to member personal returns.
Filing fee: law.justia.com/codes/illinois/chapter-805/act-805-ilcs-180/article-50/… · verified April 21, 2026
805 ILCS 180/50-10(b)(1): 'Filing articles of organization (domestic), application for admission (foreign), and restated articles of organization (domestic), $150.' Series LLC formation fee is $400 under the same subsection.
Expedited filing: law.justia.com/codes/illinois/chapter-805/act-805-ilcs-180/article-50/… · verified April 21, 2026
805 ILCS 180/50-50(e): Expedited fees include Articles of Organization $100, Articles of Amendment $100, Reinstatement $100, Application for Admission $100, Merger $200, Restated Articles $200. 24-hour turnaround for most expedited services.
Online filing portal: apps.ilsos.gov/llcarticles/index.jsp · verified April 21, 2026
Illinois Secretary of State online Articles of Organization filing portal.
Certificate of Formation form: www.ilsos.gov/publications/business-services/llc.html · verified April 21, 2026
Form LLC-5.5 Articles of Organization. PDF hosted at https://www.ilsos.gov/publications/pdf_publications/llc55.pdf
Business name search: apps.ilsos.gov/corporatellc/ · verified April 21, 2026
Illinois Secretary of State business entity search.
Operating agreement requirement: law.justia.com/codes/illinois/chapter-805/act-805-ilcs-180/article-1/ · verified April 21, 2026
805 ILCS 180/1-5 defines 'operating agreement' as an agreement 'whether oral, in a record, implied, or in any combination thereof.' No statutory requirement for a written operating agreement.
Publication requirement: law.justia.com/codes/illinois/chapter-805/act-805-ilcs-180/ · verified April 21, 2026
805 ILCS 180 imposes no newspaper publication requirement for LLC formation.
Foreign LLC registration fee: law.justia.com/codes/illinois/chapter-805/act-805-ilcs-180/article-50/… · verified April 21, 2026
805 ILCS 180/50-10(b)(1): Application for Admission (foreign LLC) fee is $150, same as domestic Articles of Organization.
Annual report fee: law.justia.com/codes/illinois/chapter-805/act-805-ilcs-180/article-50/… · verified April 21, 2026
805 ILCS 180/50-10(b)(11): Annual report fee $75, plus $50 per series for series LLCs. 805 ILCS 180/50-15(b)(1) penalty: $100 plus $100 for each year of delinquency. Deadline is before the first day of the anniversary month (§50-1(b)).
Franchise tax: tax.illinois.gov/research/taxrates/income.html · verified April 21, 2026
Illinois phased out the corporate franchise tax effective January 1, 2024 (P.A. 102-16). LLCs classified as partnerships pay Personal Property Replacement Tax at 1.5% of net income, but this is not classified as a franchise tax. No franchise tax applies to LLCs.
Corporate income tax rate: tax.illinois.gov/research/taxrates/income.html · verified April 21, 2026
Illinois corporate income tax is 7% of net income, plus 2.5% Personal Property Replacement Tax, for a combined 9.5% rate on C-corporation income. Individual income tax is 4.95% (flat).
Sales tax rate: tax.illinois.gov/questionsandanswers/answer.139.html · verified April 21, 2026
Illinois state general merchandise sales tax rate is 6.25%. Effective January 1, 2026, the 1% state grocery tax was eliminated. Local jurisdictions may impose additional taxes; combined rates vary by location.

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