How to Register a Business in California Online

Table of Contents

• Choose Your Business Entity Structure
• Select and Verify Your Business Name
• Understand California Business Registration Fees
• File Your Articles of Organization or Incorporation Online
• Obtain Your Federal Employer Identification Number
• How to File a Statement of Information Online
• Create a Business Partnership Agreement Template for California
• Register for State Tax Accounts and Local Licenses
• Frequently Asked Questions

Last Updated: September 1, 2026

Choose Your Business Entity Structure

Selecting the right business entity is the foundation of your entire registration process. The structure you choose determines your personal liability, tax obligations, and ongoing compliance requirements.

Your main options are sole proprietorship, limited liability company (LLC), corporation (C-corp or S-corp), or partnership. A sole proprietorship is simplest to start but offers zero liability protection, creditors can pursue your personal assets. An LLC separates personal and business finances with favorable tax treatment. Corporations provide strong liability protection but involve more paperwork and potential double taxation (for C-corps). Partnerships work for multiple founders but require clear agreements about ownership and responsibility.

If you're running a service business solo with minimal assets at risk, sole proprietorship might work. If you have significant personal assets to protect or plan to scale, an LLC or corporation is safer. It's easier to choose correctly upfront than to convert structures later.

Select and Verify Your Business Name

Your business name must be unique and available in California's system before you can file. Start by checking availability on the Secretary of State's online portal, this takes five minutes and saves you from filing under a name that's already taken.

Choose a distinctive name relevant to what you do. If you're operating under a name different from your legal entity name, you'll need to file a Fictitious Business Name statement (also called a "DBA" or "doing business as"). For example, if your LLC is "Jackson Consulting LLC" but you want customers to know you as "Growth Strategies," you'd file a fictitious business name.

Check availability not just in California but also at the federal level if you plan to trademark the name later. Once you've confirmed availability, reserve it immediately by filing your articles of organization or incorporation.

Understand California Business Registration Fees

Filing fees vary depending on your entity type. An LLC filing typically costs between $70 and $100 for the articles of organization (sos.ca.gov). A corporation filing ranges from $100 to $150 depending on the authorized shares. If you're filing a fictitious business name, expect to pay approximately $50 to $100 depending on your county.

Beyond the initial filing fee, budget for a federal Employer Identification Number (EIN), which is free from the IRS. Professional services like registered agent fees, business license fees, and tax registration can add several hundred dollars in the first year.

File Your Articles of Organization or Incorporation Online

The Secretary of State's online portal allows you to file articles of organization (for LLCs) or articles of incorporation (for corporations) directly. You'll need to provide your business name, business address, registered agent information, and details about ownership structure.

A registered agent is a person or company authorized to receive legal documents on behalf of your business. This can be you, a business partner, or a professional registered agent service. The registered agent must have a physical address in California; a PO box doesn't work.

The filing process typically takes 5-10 business days for standard processing. You can pay extra for expedited processing if needed. Once approved, you'll receive a filing receipt and your official entity number. Keep this number and receipt for tax registration and future compliance filings.

Obtain Your Federal Employer Identification Number

An EIN (Employer Identification Number) is your business's tax ID. The IRS issues EINs for free through their online application in about 15 minutes, and you can use your EIN immediately after applying (irs.gov).

You'll need your Social Security number, business structure, and business address to apply. Apply as soon as your entity is officially filed with the Secretary of State. The IRS matches your EIN application against the Secretary of State's records. You can apply online at IRS.gov or by phone; the online process is fastest.

How to File a Statement of Information Online

A Statement of Information updates your business information with the Secretary of State. For LLCs, it's required every two years (sos.ca.gov). For corporations, it's required annually. File your initial Statement of Information within 90 days of receiving your entity number.

The most frequent mistakes include mismatched registered agent information, incomplete member or officer details, outdated business address, and missed deadline filings. If your filing is rejected, the Secretary of State will send a rejection notice explaining the error. Review it carefully, update the information, and resubmit.

If you miss your deadline, the Secretary of State may issue a notice of delinquency. You have a grace period to file, but if you don't respond, your entity can be administratively dissolved. This is reversible but disrupts your business and creates tax complications. Set a calendar reminder at least 30 days before your deadline.

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Create a Business Partnership Agreement Template for California

If you're launching with a business partner, a written partnership agreement is essential. This document outlines ownership percentages, profit distribution, decision-making authority, and what happens if a partner leaves.

A partnership agreement should specify each partner's capital contribution, their role, and how profits are split. It should address what happens if a partner wants to exit, whether they can sell their stake or if the remaining partner has the right to buy them out. It should define voting rights and how major decisions are made, and address what happens if a partner dies or becomes unable to work.

California law allows partners to structure these agreements flexibly, but the agreement must be in writing and signed by all parties. The cost of drafting a solid agreement upfront is far less than the cost of litigation later.

Register for State Tax Accounts and Local Licenses

After your entity is filed and you have an EIN, register for state tax accounts. Most businesses need a California seller's permit (if selling taxable goods), an employer account (if hiring employees), and income tax registration. You can complete these registrations online through the California Department of Tax and Fee Administration.

Seller's Permit, A seller's permit allows you to collect sales tax from customers. If you're selling services only, you typically don't need one. If you're selling products or a mix, you do. The permit is free but required by law if you're making taxable sales. Processing takes 1-2 weeks.

Employer Account, An employer account is required if you have employees. Register at least two weeks before your first employee's start date. This triggers payroll tax obligations.

Income Tax Registration, All businesses must register for income tax with the California Franchise Tax Board, even if you have no income in your first year. Processing takes 1-2 weeks.

Local Business Licenses, Local business licenses are issued by your city or county. Requirements vary by location and industry. Check with your city or county clerk's office for specific requirements.

Industry-Specific Permits, Certain industries require additional permits:

• Food service and retail, Health permit from your county health department. Apply after securing your physical location.
• Construction and contracting, Contractor's License from the Department of Consumer Affairs. Requires passing an exam and meeting experience requirements.
• Professional services, Accountants, attorneys, engineers, and other licensed professionals must register with their respective state boards.
• Alcohol sales, Department of Alcoholic Beverage Control license. This process is lengthy and requires local approval.
• Cannabis businesses, Local and state permits through the Department of Cannabis Regulation. Requirements vary significantly by city.

Check the California Department of Consumer Affairs website or your city's business development office to identify industry-specific requirements for your business type.

Post-Registration Tax Calendar for New Businesses, After registration, mark these key dates:

• Month 1-2, File your initial Statement of Information (within 90 days of entity approval).
• Month 2-3, If you have employees, set up payroll and begin withholding taxes. Payroll taxes are due quarterly.
• Month 3, If you have a seller's permit, begin collecting sales tax. Sales tax returns are typically due monthly or quarterly.
• Month 6, Mid-year review: reconcile your business finances and confirm all registrations are current.
• Month 12, File your annual income tax return with the Franchise Tax Board (typically due April 15). If you're an LLC taxed as a partnership, file Form 1065 with the IRS.
• Month 12, Renew your local business license if required.
• Month 24, File your Statement of Information (for LLCs; corporations file annually).

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