Starting a business in California is an exciting milestone, but it also comes with a set of legal steps you cannot afford to skip. California is one of the largest business markets in the world, and its regulatory environment reflects that scale. Whether you plan to open a small boutique in Los Angeles or launch a tech startup in San Diego, getting the legal foundation right from day one protects your personal assets, builds credibility with customers, and keeps you out of costly trouble later.
This guide walks you through the essential legal steps to start a business in California legally, from choosing a business structure to obtaining the right licenses and staying compliant with state law.
Step 1: Choose the Right Business Structure
The very first legal decision every entrepreneur faces is choosing the right business entity type. Your choice affects how much personal liability you carry, how you pay taxes, and how easily you can bring on partners or investors.
The most common structures in California include:
- Sole Proprietorship – Simple to set up, but you are personally liable for all business debts.
- General Partnership – Two or more people share ownership; all partners carry personal liability.
- Limited Liability Company (LLC) – Combines liability protection with flexible tax treatment; ideal for most small businesses.
- Corporation (C-Corp or S-Corp) – Best for businesses planning to raise outside investment; comes with more formalities.
- Nonprofit Corporation – For organizations pursuing a charitable, educational, or public benefit mission.
For most new entrepreneurs, forming an LLC or corporation is the smartest move because it creates a legal separation between you and the business. If you are unsure which structure fits your goals, reading about LLC vs. Corporation differences in detail is a great starting point — see our article LLC vs. Corporation: Which Is Right for Your Business?
Step 2: Register Your Business With the State of California
Once you have settled on a structure, you need to formally register with the California Secretary of State. The process differs slightly by entity type:
For LLCs
File Articles of Organization (Form LLC-1) with the California Secretary of State. As of 2024, the filing fee is $70. You will also need to create an Operating Agreement — it is not legally required to be filed publicly, but it governs how your LLC runs and is essential for legal protection.
For Corporations
File Articles of Incorporation with the California Secretary of State. You will then need to adopt corporate bylaws, issue shares, hold an initial board meeting, and elect officers.
Registered Agent
California requires every business entity to designate a registered agent — a person or service authorized to receive legal documents on behalf of the business. This can be you personally, an attorney, or a registered agent service.
Pro Tip: California also requires most LLCs to pay an annual minimum franchise tax of $800, due each year regardless of revenue. Plan this into your startup budget from the beginning.
Step 3: Get Your Federal Employer Identification Number (EIN)
An Employer Identification Number (EIN) is essentially a Social Security number for your business. You need it to open a business bank account, file taxes, and hire employees. The IRS issues EINs for free online, and the process takes only a few minutes. Even if you are a single-member LLC with no employees, applying for an EIN is a best practice because it keeps your Social Security number out of vendor and contractor paperwork.
Step 4: Obtain Required Business Licenses and Permits
California does not issue a single "general business license" at the state level, but virtually every business needs some form of license or permit depending on its industry and location. Failing to obtain the right licenses is one of the most common legal mistakes small businesses make — and the penalties can be severe. See our guide on Common Legal Mistakes Small Businesses Should Avoid for a deeper look.
Key licenses and permits to consider:
- Local Business License – Most cities and counties in California require a local business license or business tax certificate. Check with your city hall or county clerk.
- Seller's Permit – Required if you sell tangible goods in California, issued by the California Department of Tax and Fee Administration (CDTFA).
- Professional Licenses – Contractors, real estate agents, attorneys, healthcare providers, and many other professions require state-issued professional licenses.
- Zoning and Land Use Permits – If operating from a physical location, your city or county planning department must approve the use of that space for your type of business.
- Health Permits – Required for restaurants, food trucks, salons, and other businesses that affect public health.
Step 5: Register for California State Taxes
California's tax obligations are multi-layered. Here is what most new businesses need to address:
- Franchise Tax Board (FTB) Registration – All LLCs and corporations doing business in California must register with the FTB and pay the annual minimum franchise tax.
- Sales and Use Tax – If you sell products, register with the CDTFA for a Seller's Permit.
- Payroll Taxes – If you plan to hire employees, register with the California Employment Development Department (EDD) for payroll tax withholding and unemployment insurance.
Understanding California's tax requirements for new businesses early can save you from expensive penalties. Consulting a business attorney or CPA before you start operating is well worth the investment.
Step 6: Open a Business Bank Account and Set Up Accounting
Keeping your personal and business finances separate is not just good practice — it is legally essential for maintaining the liability protection that your LLC or corporation provides. Courts can "pierce the corporate veil" and hold you personally liable for business debts if you commingle personal and business funds.
To open a business bank account you will typically need your EIN, your filed Articles of Organization or Incorporation, and your Operating Agreement or Bylaws. From there, set up a simple accounting system to track income and expenses from day one.
Step 7: Draft Key Business Contracts and Agreements
Legally sound contracts protect you in every business relationship. Before you start serving customers or working with vendors, you should have the following documents in place:
- Client Service Agreements or Sales Contracts
- Non-Disclosure Agreements (NDAs) for protecting proprietary information
- Partnership or Operating Agreements if you have co-owners
- Employee Offer Letters and Contractor Agreements
- Terms of Service and Privacy Policy for websites and apps
Poorly drafted contracts are a leading source of business disputes. A qualified business attorney in California can draft and review contracts to ensure they are enforceable and tailored to your specific needs.
Step 8: Understand Employment Law Requirements
California has some of the most employee-protective labor laws in the country. If you plan to hire anyone — even part-time — you need to understand:
- California minimum wage requirements (which exceed the federal minimum)
- Mandatory paid sick leave and meal and rest break rules
- Worker classification rules: employee vs. independent contractor (AB 5 significantly tightened this in California)
- Anti-discrimination and harassment policies under the California Fair Employment and Housing Act (FEHA)
- Mandatory workplace posters and notices
Misclassifying workers as independent contractors when they should be employees is one of the costliest legal errors a California business can make. Review our article on Legal Requirements for Starting a Business for a broader overview of compliance obligations.
Step 9: Protect Your Intellectual Property
If your business has a unique name, logo, product, or proprietary process, protecting that intellectual property (IP) is an important legal step many new entrepreneurs overlook. Key actions include:
- Trademark your business name and logo with the USPTO to prevent others from using similar marks.
- Copyright original creative works such as website content, software, marketing materials, and designs.
- Patent novel inventions or unique processes if applicable.
- Trade Secrets – Use NDAs and confidentiality agreements to protect proprietary business information.
Step 10: Work With a Qualified California Business Lawyer
Navigating California's complex legal and regulatory landscape on your own is risky. A knowledgeable business attorney can guide you through every stage — from formation and contract drafting to dispute resolution and growth planning. As explained in our article on What Does a Business Lawyer Do?, having proactive legal counsel is one of the best investments a new business owner can make.
Whether you are launching a retail store in Los Angeles, a tech startup in San Francisco, or a hospitality business in San Diego, connecting with a local attorney who understands California's regional regulations gives you a distinct advantage. You can find experienced attorneys in your area through:
Our full guide on How to Start a Business Legally covers additional nuances for various business types and industries.
For a comprehensive overview of business law topics that may affect your company, explore our Business Law Resource Center.