How to Form a Corporation in California: The Complete 2026 Guide

Forming a corporation in California means filing Articles of Incorporation (Form ARTS-GS) with the California Secretary of State for a $100 fee, naming an agent for service of process, sizing your board to your shareholder count under Cal. Corp. Code § 212, and filing an initial Statement of Information within 90 days. The bigger commitment is ongoing: an $800 minimum franchise tax every year after the first, plus an 8.84% corporate income rate for profitable C-Corps. This guide covers every step and cost for a California C-Corporation, with same-day filing available through LLC Attorney starting at $49.

C-Corp vs LLC in California

Most first-time business owners in California choose an LLC, and given California's $800 minimum tax applies to both, the corporation only makes sense in specific cases — chiefly when you plan to raise institutional capital or grant employee stock options, where the C-Corp structure is a requirement rather than a preference.

Choose a California corporation when:

• You plan to raise venture capital or institutional investment. VC firms, angels, and most institutional investors require a C-Corp structure before they write a check. Preferred stock, convertible notes, SAFEs, and board governance by class are native to corporations, not LLCs.
• You want to issue stock options to employees (ISOs). Corporations issue stock; LLCs issue membership interests. ISO and NSO option plans are available to corporations but not to LLCs.
• You expect to eventually go public or sell to a public company. Public markets operate on corporate stock mechanics.
• You are in a regulated industry where corporate structure is required or expected by licensing boards, government contracts, or institutional counterparties.

Stick with an LLC when:

• You are a small business with one or a few owners who will not need institutional investment.
• Pass-through taxation without payroll complexity is the priority.
• You do not need stock option plans or institutional investment mechanics.

Licensed professionals in California: under Cal. Corp. Code §§ 13400–13410 (Moscone-Knox Professional Corporation Act), most licensed professionals cannot form an LLC in California. For professionals including physicians, attorneys, dentists, accountants, architects, psychologists, optometrists, chiropractors, and other state-licensed professionals, the correct structure is a Professional Corporation (PC). LLC Attorney's formation service handles PC formation in California.

Why and when to incorporate in Delaware vs your home state

Delaware is the default for startups on a venture track. Institutional investors expect it, term sheets assume it, and the Court of Chancery resolves corporate disputes faster than any general trial court. If you are raising a priced round or structuring for QSBS eligibility, incorporate in Delaware.

If you are not raising outside capital, California is usually the better choice. A Delaware corporation operating in California still has to register as a foreign corporation there, pay California fees, and file a Delaware franchise tax return each March 1. That is duplicate overhead with no benefit for a business that will not seek institutional investment.

What's Unique About Corporations in California?

California is where many founders incorporate because that is simply where they live and operate, not because the state competes on cost. The trade-off is the highest baseline tax burden of any state for a corporation: an $800 minimum franchise tax every year after the first, an 8.84% corporate income rate, and aggressive doing-business rules that pull in out-of-state corporations with California operations. The upside is direct access to the country's deepest pools of venture capital, talent, and customers — which is why a California corporation is a deliberate operating choice rather than a tax-planning one.

Key California-specific requirements:

• Articles of Incorporation (not "Articles of Organization" — that is the LLC filing document)
• Board minimum scales with shareholder count (Cal. Corp. Code § 212): 1 director for 1 shareholder, 2 for 2, 3 once there are 3 or more
• $800 minimum annual franchise tax (waived the first taxable year under R&TC § 23153(f)); a C-Corp pays the greater of $800 or 8.84% of California net income, an S-Corp the greater of $800 or 1.5%
• Statement of Information (Form SI-550) is annual for corporations, not the biennial schedule California applies to LLCs — $25, with a $250 penalty for a late filing
• Shareholder-scaled board minimum (Cal. Corp. Code § 212) — most states require a flat one-director minimum regardless of ownership

Corporations the exemption covers a corporation's first taxable year after incorporation and waives only the $800 minimum — the 8.84% rate still applies to any net income earned that year are exempt from the minimum tax in their first taxable year under Revenue and Taxation Code § 23153(f). The minimum kicks in from year two.

Selecting a Name for Your California Corporation

Your corporation's name must comply with California naming requirements:

• Must include "Corporation," "Incorporated," "Inc.," "Corp.," or another California-approved designator (Cal. Corp. Code § 201)
• Must be distinguishable from all existing California entities in the California business search
• California does not force a corporate designator such as Inc. or Corp. onto the name, but it rejects any name that is likely to mislead the public or that uses restricted words like Bank, Trust, Insurer, or Cooperative without the relevant regulator's clearance
• Names implying government affiliation or banking activity are restricted

Search the California business search at businesssearch.sos.ca.gov before filing. Your name search is not a reservation — the name can be registered by another filer while you prepare your Articles of Incorporation.

Name reservation: file a name reservation with the California Secretary of State, $10 fee, holding the name for 60 days. Recommended if your paperwork takes more than a few days to prepare.

Directors, Officers, and Shareholders in a California Corporation

A California corporation has three distinct roles:

Shareholders own the corporation. They hold stock and vote on major decisions — electing directors, approving mergers, authorizing major asset sales. Shareholders do not manage day-to-day operations.

Directors govern the corporation through a Board of Directors. They set strategic direction, authorize major transactions, and oversee management. California's director requirements: California ties the minimum board size to the number of shareholders (Cal. Corp. Code § 212): a corporation may have one director while it has only one shareholder, must have at least two directors with two shareholders, and at least three directors once it has three or more shareholders. Directors need not be California residents or U.S. citizens. The Articles need not name the initial directors, but they must appear on the Statement of Information filed within 90 days.

Officers (CEO, CFO, Secretary, etc.) manage day-to-day operations. Officers are appointed by the Board of Directors. California requires a President or Chair of the Board, a Secretary, and a Chief Financial Officer, though one person may hold all three offices (Cal. Corp. Code § 312). While the corporation has a single shareholder, that one person may serve as the sole director and simultaneously hold the President, Secretary, and CFO roles.

Designating a Agent for Service of Process

Every California corporation must designate a Agent for Service of Process — a person or entity with a physical California street address who receives legal notices, lawsuits, and official state correspondence on behalf of your corporation.

California calls the role the Agent for Service of Process rather than a registered agent. The agent can be an individual residing in California with a physical street address, or a corporate agent that has filed a Form 1505 certificate with the Secretary of State; in either case a P.O. box does not qualify. The corporation itself cannot serve as its own agent. The agent's California address becomes public record on the Articles and on every Statement of Information.

If the California Secretary of State cannot deliver legal notices to your Agent for Service of Process, California can administratively suspend your corporation. LLC Attorney's California Agent for Service of Process service is $125/year.

California Corporation Costs and Compliance

How to Form a Corporation in California

If You Do It Yourself

If LLC Attorney Does It for You

1. Submit your information at llcattorney.com — corporate name, director structure, authorized shares, Agent for Service of Process preference, fiscal year, and target formation date. No forms to find or download.
2. LLC Attorney files your Articles of Incorporation with the California Secretary of State, drafts your bylaws, handles your organizational meeting consent, issues your stock ledger documentation, applies for your EIN, and covers same-day filing if needed. Your Agent for Service of Process designation and initial Statement of Information are included.
3. Receive your approved Articles of Incorporation, bylaws, organizational consent, stock documentation, and EIN confirmation through your LLC Attorney client portal. Annual compliance reminders are included so you never miss a SI-550 deadline or annual tax payment.

S-Corp Election for California Corporations — What You Need to Know

An S-Corp election is not a separate entity — it is a federal tax election made by an existing corporation. Your California corporation remains a California corporation; you are only changing how the IRS taxes it.

The S-Corp tax advantage: a C-Corp pays 21% federal corporate income tax on net income, and shareholders pay income tax again on dividends. An S-Corp passes income directly to shareholders' personal returns, skipping the corporate-level tax. For owner-operated businesses with consistent profitability above roughly $40,000/year, the S-Corp election typically produces material tax savings.

S-Corp payroll requirement: if you elect S-Corp status and work in the business, you must pay yourself a "reasonable salary" subject to payroll taxes. The savings come from income above that salary, which passes through without payroll tax. Skip the salary and the IRS can reclassify your distributions as wages and assess back payroll taxes plus penalties.

Eligibility requirements:

• 100 or fewer shareholders
• All shareholders must be U.S. citizens or permanent residents
• Only one class of stock (identical distribution and liquidation rights)
• No institutional shareholders, partnerships, or non-resident alien shareholders

California treatment of S-Corps: California recognizes the federal S-Corp election but still taxes the entity: an S-Corp pays the greater of the $800 minimum or 1.5% of its California net income on Form 100S, on top of the pass-through tax shareholders owe on their personal returns. That 1.5% entity-level tax is unique among the common incorporation states and erodes some of the S-Corp advantage, so model the combined California plus federal picture before electing. Venture-track corporations generally cannot elect S-Corp status anyway, since institutional investors, multiple share classes, and entity shareholders all break eligibility.

Filing deadline: IRS Form 2553 must be filed within 75 days of formation, or by March 15 of the tax year for which you want the election effective. Late elections are sometimes accepted with a written explanation of reasonable cause.

Professional Corporations in California

California prohibits most licensed professionals from forming an LLC. Under Cal. Corp. Code §§ 13400–13410 (Moscone-Knox Professional Corporation Act), professionals including physicians, attorneys, dentists, accountants, architects, psychologists, optometrists, chiropractors, and other state-licensed professionals must use a Professional Corporation (PC) rather than an LLC or standard corporation.

Under the Moscone-Knox Professional Corporation Act (Cal. Corp. Code §§ 13400–13410), a general stock corporation may not render professional services that require a state license; licensed professionals must instead form a California Professional Corporation, where each shareholder generally must hold a license in the same profession.

An attorney consultation can confirm whether your license type requires a PC and which professional designator your California license board requires.

When Should You Consult an Attorney for Your California Corporation?

LLC Attorney provides on-demand attorney consultations for a flat rate per 30-minute session — no retainer required. Corporation formation benefits from attorney guidance more than most entity types because of share structure, bylaw complexity, and S-Corp election timing. Common scenarios:

• Multiple founders or investors: share structure decisions made at formation (authorized shares, classes, par value) affect every future financing round and exit. A misstructured cap table is expensive to unwind.
• S-Corp election analysis: whether to elect depends on projected net income, payroll requirements, and state-level S-Corp recognition. The payroll requirement catches founders off guard.
• High-liability industry: regulated industries may have specific corporate structure requirements from licensing boards or insurance carriers.
• Raising capital: if you plan to raise institutional capital, your share structure, option pool, and Delaware vs. home-state decision should be reviewed before you file.
• California-specific wrinkles: California may have corporate law provisions a generic national template does not cover correctly.

Is California a State Where Legal or Tax Advice Matters More for Corporations?

California's combination of an $800 minimum franchise tax, an 8.84% corporate rate, a 1.5% S-Corp entity tax, and broad doing-business rules makes the entity-type and tax-election decisions consequential from day one. If you are a licensed professional, the Moscone-Knox Act may bar a standard corporation entirely. An attorney or experienced formation service should confirm whether a C-Corp, S-Corp election, Professional Corporation, or out-of-state structure fits your cap table and tax picture before you file the Articles.

What You Actually Get When You Incorporate in California with LLC Attorney

A California corporation that has only been filed with the state is not a finished corporation. The $100 filing creates the entity; it does not give you the bylaws, board consents, or stock records that make the corporation function and keep the liability shield intact. A "$0 filing" that leaves those out is not free — it is unfinished, and in California the real cost was never the filing fee anyway. It is the $800-a-year tax and the compliance calendar, which is exactly where an incomplete corporation gets you into trouble.

Included with LLC Attorney corporation formation, starting at $100:

• Same-day or 24-hour California filing at no markup on the state fee. Most services charge extra to expedite.
• Attorney-drafted bylaws, initial board consent, and organizational minutes — customized, not auto-generated templates.
• Initial stock issuance and cap-table setup, so your ownership is documented correctly from day one.
• Federal EIN, obtained for you.
• California Agent for Service of Process service at $125/year, included to keep you in good standing.
• S-Corp election guidance when pass-through tax treatment is the right call for your situation.
• Access to attorney-trained Business Success Advisors at no charge, plus optional flat-fee attorney consultations (no retainer).

Because California's cost is in the annual tax rather than the filing fee, the documents that keep the corporation in good standing — bylaws, board consents, a clean cap table, and an on-time Statement of Information — are exactly what is included here.

Starting Your California Corporation with LLC Attorney

California's corporate formation requirements are straightforward to file but expensive to maintain — the $800 minimum franchise tax, the 8.84% corporate rate versus the 1.5% S-Corp tax, the shareholder-scaled board minimum, and the Moscone-Knox restriction on professional practices. Getting your directors, share structure, bylaws, and initial compliance filings right at formation prevents expensive corrections later.

The service handles California corporation formation starting at $49. Same-day filing is available at no markup on state fees. On-demand attorney consultations in 30-minute increments — no retainer — cover bylaws drafting, S-Corp election analysis, C-Corp vs. S-Corp election modeling and professional-practice entity selection, and annual tax planning. See our full pricing for all service tiers.

Frequently Asked Questions

How long does it take to form a corporation in California?

Online California incorporations typically clear the same business day during normal volume, though processing can stretch to several weeks during the December and early-January rush. California offers paid expedited tiers: 24-hour service (+$350), 4-hour service (+$500), and same-day handling (+$750, submit by 9:30 a.m.). LLC Attorney's same-day filing service hits time-critical formation dates at no markup on the state's expedite fee.

What is the difference between a C-Corp and an S-Corp in California?

A C-Corp and an S-Corp are the same California corporation — the difference is federal tax treatment only. A C-Corp pays corporate income tax at the entity level (21% federal rate), and shareholders pay personal income tax again on dividends. An S-Corp elects pass-through taxation — income flows to shareholders' personal returns without corporate-level tax. The election is made with the IRS via Form 2553 and has no impact on your California formation documents. California's 1.5% entity-level tax on S-Corps means the election saves less here than in no-corporate-tax states, so run the math for your specific income before filing Form 2553.

Can a single person form a corporation in California?

Yes, while you are the only shareholder. California lets a single individual be the sole director and hold every required officer role — President or Chair, Secretary, and Chief Financial Officer — under Cal. Corp. Code §§ 212 and 312. Once a second and then a third shareholder come on board, the statutory minimum board size rises to two and then three directors. Even as a solo owner you must keep corporate formalities: adopt bylaws, document board consents, issue stock, and keep corporate and personal funds separate.

What taxes does a California corporation have to pay?

A California C-Corp pays the greater of the $800 minimum franchise tax or 8.84% of its California net income to the Franchise Tax Board on Form 100. The $800 minimum is waived for the corporation's first taxable year under R&TC § 23153(f), but the 8.84% rate still applies to any first-year income. An S-Corp instead pays the greater of $800 or 1.5% of net income on Form 100S. At the federal level a C-Corp pays the flat 21% corporate income tax unless it elects S-Corp treatment, which shifts income to shareholders' personal returns.

What is the Statement of Information and when is it due?

California corporations file a Statement of Information (Form SI-550) within 90 days of incorporation and then every year, unlike the biennial schedule California uses for LLCs. The fee is $25, filed online through bizfileonline.sos.ca.gov. The form lists your directors, principal officers, agent for service of process, and addresses. Missing the annual filing window triggers a $250 penalty assessed by the Franchise Tax Board and can lead to suspension of the corporation.

Does a California corporation need bylaws?

California does not require corporations to file bylaws with the Secretary of State. However, bylaws are a legal requirement for corporate governance — they define how your board operates, how shareholder meetings work, how officers are appointed, and how major decisions are made. A corporation without bylaws is technically non-compliant and lacks the foundational document that governs all major corporate decisions. Every bank, investor, and serious counterparty will request your bylaws.

What happens if I miss the annual tax deadline?

If you miss the franchise-tax deadline, the FTB adds a late-payment penalty (generally 5% of the unpaid tax plus 0.5% per month, up to 25%) and interest. Unpaid franchise tax and a missed Statement of Information together lead the FTB and Secretary of State to suspend the corporation, which strips its right to sue, defend lawsuits, or use its name. Reviving a suspended California corporation requires paying all back tax, penalties, and interest and obtaining an FTB tax clearance before the SOS will restore good standing.

Can I change my California corporation to an LLC later?

Yes. California allows a corporation to convert to an LLC by filing a Certificate of Conversion (Form CONV LLC-1) with the Secretary of State along with the LLC formation document. The conversion is generally a taxable event for federal purposes and can trigger gain recognition, so model the consequences with a CPA first — and note you will still owe any outstanding California franchise tax through the conversion date. An attorney consultation can map the cleanest path for your assets and basis.

Can I form a standard corporation if I hold a California professional license?

No, not as a standard general stock corporation. California's Moscone-Knox Professional Corporation Act (Cal. Corp. Code §§ 13400–13410) requires licensed professionals — doctors, lawyers, dentists, accountants, architects, and many others — to form a Professional Corporation, and generally every shareholder must hold a license in that profession. The licensing board for your field may also impose name and ownership rules. If you are licensed, confirm with an attorney whether a Professional Corporation or, for some fields, an LLP is the right vehicle before you file.

What happens if my Agent for Service of Process cannot be reached?

If California is unable to deliver legal notices to your Agent for Service of Process, the state can administratively suspend your corporation. This can happen without direct notice to you. A professional Agent for Service of Process service ensures a qualified person is available during business hours at a physical California address to receive any legal documents on your behalf.

Learn More About California

• California LLC Formation
• California Registered Agent
• California EIN Number
• California Virtual Office