Form an S-Corp in California

Everything you need to know about forming an S-Corp in California. Filing fees, requirements, timeline, and step-by-step guidance.

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$100
Filing Fee
5-10 business days
Processing Time
$800
Annual Tax
Required
Registered Agent

How to File

1

Choose a Corporate Name

Select a unique name that complies with California naming rules — it must include a corporate designator such as 'Inc.', 'Corp.', or 'Incorporated' and must be distinguishable from existing entities registered with the California Secretary of State. You can check name availability using the California Business Search tool on the SOS website.

30 minutes

2

Appoint a Registered Agent

Designate a registered agent (called an 'agent for service of process' in California) who has a physical street address in California and is available during normal business hours to receive legal and official documents. This can be an individual or a registered commercial agent service.

15 minutes

3

File Articles of Incorporation

Prepare and file Form ARTS-GS (Articles of Incorporation — General Stock Corporation) with the California Secretary of State, either online, by mail, or in person. The filing fee is $100, and you must list the corporation's name, registered agent, and initial directors.

1-2 hours

4

File an Initial Statement of Information

Within 90 days of filing your Articles of Incorporation, submit a Statement of Information (Form SI-550) to the California Secretary of State. This form provides key details about the corporation's officers, directors, and registered agent, and costs $25 to file.

30 minutes

What's Next After Filing

Once your S-Corp is officially formed, you'll want to complete these important steps:

  • •Adopt Corporate Bylaws and Appoint Directors — Draft and adopt corporate bylaws that govern your corporation's internal operations, including rules for meetings, voting, officer roles, and share issuance. Hold an organizational meeting to appoint directors, elect officers, and authorize the issuance of stock.
  • •Obtain EIN and Elect S-Corp Status with the IRS — Apply for a federal Employer Identification Number (EIN) from the IRS at no cost, then file IRS Form 2553 (Election by a Small Business Corporation) to elect S-Corporation tax treatment. All shareholders must sign Form 2553, and the election must be made by March 15 of the tax year it is to take effect (or within 75 days of incorporation for new entities).
  • •Register with the California Franchise Tax Board and Obtain Licenses — Register with the California Franchise Tax Board (FTB) and pay the $800 minimum franchise tax, due by the 15th day of the 4th month after incorporation. Additionally, obtain any required state and local business licenses or permits, and open a corporate bank account to maintain separation of personal and business finances.

Advantages

  • ✓Pass-through taxation avoids federal corporate double taxation, with profits and losses flowing directly to shareholders' personal tax returns
  • ✓Shareholders who are active in the business may reduce self-employment tax by splitting income between reasonable salary and distributions, potentially saving thousands annually
  • ✓Limited liability protection shields shareholders' personal assets from corporate debts and legal judgments
  • ✓Enhanced credibility with investors, vendors, and customers compared to sole proprietorships or partnerships, and easier to transfer ownership through stock

Considerations

  • •California imposes an $800 minimum annual franchise tax and a 1.5% S-Corp tax on net income over $1,000,000 at the entity level, making it more expensive than in many other states
  • •Strict IRS eligibility requirements limit S-Corps to 100 shareholders, only one class of stock, and shareholders must be U.S. citizens or residents — disqualification ends S-Corp status
  • •Significant administrative burden including required corporate formalities (bylaws, board meetings, minutes, stock issuance), annual filings, and payroll tax compliance for officer salaries, which increases accounting and legal costs

Annual Obligations

Franchise Tax:$800
Annual Report Fee:$25
Report Due:Statement of Information due every year within 90 days of anniversary month; Franchise Tax due by the 15th day of the 4th month of the tax year
California S-Corporations are subject to a minimum $800 annual franchise tax regardless of income or activity, payable to the Franchise Tax Board. S-Corps with net income over $1,000,000 also owe an additional 1.5% S-Corp tax on California net income (1.5% rate applies at the entity level). The Statement of Information (Form SI-550) must be filed annually with the Secretary of State for a $25 fee. California does not fully conform to the federal S-Corp election — shareholders must still pay California personal income tax on their share of S-Corp income. California also requires an annual Form 100S (California S Corporation Franchise or Income Tax Return) to be filed with the FTB.
Last verified: August 2026Source

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