If you're working for yourself in California, you're generally considered self-employed. This is true whether you're a freelance writer, a gig-economy driver, or a consultant. Unless you've set up a formal business structure like an LLC or a corporation, the state and federal government see you as a sole proprietor. It's the simplest and most common way to start a business.

Being a sole proprietor means you don't have to file any special paperwork to create your business. If you start doing business, you're automatically a sole proprietor. The key thing to understand is that the law doesn't see you and your business as separate entities.

This lack of legal separation has a major consequence: unlimited personal liability. This means if your business incurs debt or is sued, your personal assets could be at risk. Creditors or litigants can go after your personal savings, your car, or even your home to satisfy business obligations.

As a sole proprietor, your business profits are treated as your personal income. You'll report all your business income and expenses on a Schedule C, which you file with your federal tax return. For California state taxes, you'll report this income on your personal tax return, Form 540, the California Resident Income Tax Return. You don't file a separate business tax return for the state.

Unlike a traditional employee, no one is withholding taxes from your paychecks. You are responsible for paying your own income taxes, as well as federal self-employment taxes (which cover Social Security and Medicare), throughout the year. You can't just wait until April to pay everything at once.

These payments are based on your expected income for the year. You'll typically make four payments, due in April, June, September, and January of the following year. This ensures you're staying current with your tax obligations and helps you avoid a large bill and potential penalties when you file your annual return.

Beyond federal and state taxes, you also need to consider local requirements. Many cities and counties in California require businesses, even small sole proprietorships, to obtain a business license or a business tax certificate to operate legally. The fees and requirements vary significantly from one city to another.

For example, some cities charge a flat fee, while others base the tax on your gross receipts or the type of business you run. It's crucial to check with your city hall or county clerk's office to understand what's required in your specific location. Operating without the proper local licenses can result in fines and penalties.

Now you have a foundational understanding of what it means to be self-employed in California. You're aware of the sole proprietorship structure, its liability implications, and your basic tax and local licensing duties.