Last updated: October 2026
A sole proprietorship is what you have if you start working for yourself and never form anything. There is no filing, no formation cost, and — uniquely among California structures — no $800 annual franchise tax. The trade is total: there is no legal separation between you and the business, so every debt, contract, and claim against it is a claim against your personal assets. Bay Legal, P.C. advises California owners on when that trade is acceptable and when it is time to form something.
Definition: A sole proprietorship is an unincorporated business owned by one person, with no legal distinction between the owner and the business.
What does a sole proprietorship actually cost in California?
Nothing to form, and nothing annually to the Franchise Tax Board at entity level. You begin trading and you are a sole proprietor. There is no Secretary of State filing, no Articles, no Statement of Information.
That last point is worth weighing against the alternatives, because every other structure carries the $800 minimum. An LLC owes it under Revenue and Taxation Code section 17941 and a corporation under section 23153, payable whether or not the business makes money. For a business earning very little, that $800 is a meaningful percentage of revenue, and it is the strongest argument for staying unincorporated while testing an idea.
What you may still owe is separate from entity tax: income tax on your profit, self-employment tax on the whole of it, any city or county business licence, a seller’s permit if you sell tangible goods, and industry-specific licensing.
Do you need to file anything to trade under a business name?
Yes, if the name is not your own surname. Under Business and Professions Code section 17900 and following, a fictitious business name statement must be filed with the county clerk in the county of your principal place of business, and the statement must then be published in a newspaper of general circulation in that county — typically once a week for four successive weeks, with proof of publication filed afterwards.
The filing lasts five years and must be renewed. Trading under an unregistered fictitious name has a practical consequence beyond the technical breach: California law can bar a business from maintaining a lawsuit on a contract made under an unregistered name until the filing is made. A sole proprietor who never filed and then needs to sue a non-paying client discovers this at the worst moment.
A fictitious business name statement is not a trademark, does not stop anyone else using the name, and creates no entity. It is a public record connecting a trading name to a person.
What is the personal liability exposure?
Complete, and this is the whole of the case against the structure. There is no entity to sue, so a claimant sues you. A commercial lease default, an unpaid supplier, a customer injury, an employee claim, or a professional error all reach your personal bank accounts, your investments, and potentially your home.
Business insurance addresses part of it and is essential for any sole proprietor. What insurance does not do is cap contractual exposure — a personal guarantee is unnecessary because everything is already personal.
The practical threshold is risk rather than revenue. A freelance copywriter with professional indemnity cover and no premises is in a different position from a contractor working on other people’s property, or anyone with employees, inventory, or a lease. Where third parties can be physically or financially harmed by the work, the case for an entity strengthens sharply.
Can a sole proprietor have employees?
Yes. This is worth stating explicitly because the live version of this page said otherwise. A sole proprietorship has one owner, not one worker. You may hire employees, and doing so brings the same obligations any employer carries.
- Obtain an EIN from the IRS. You can operate without one as a sole proprietor with no employees; once you hire, you need one.
- Register with the Employment Development Department for payroll tax withholding and reporting.
- Carry workers’ compensation insurance. California requires it from the first employee, and the penalties for operating without it are severe.
- Classify correctly. Under Labor Code section 2775, a worker is presumed an employee unless all three parts of the ABC test are satisfied. Misclassifying a contractor is among the most expensive mistakes a small California business makes, and a sole proprietor bears that liability personally.
When should you form an entity instead?
| Sole proprietorship | LLC | |
|---|---|---|
| Formation filing | None | Articles of Organization |
| Annual state minimum | None | $800, plus the fee on gross income above $250,000 |
| Personal liability | Unlimited | Limited to the entity |
| Taxation | Pass-through on your personal return | Pass-through by default |
| Can have employees | Yes | Yes |
| Best fit | Low-risk, low-revenue, testing an idea | Anything with premises, staff, inventory, or contract exposure |
Four triggers usually settle it: taking on premises, hiring a first employee, signing a contract large enough that failing it would hurt, or reaching profit where the $800 stops being material. Any one of them is a reason to have the conversation.
Who advises sole proprietors at Bay Legal?
Managing attorney Jayson R. Elliott leads the firm’s business practice, covering entity selection and formation as well as the contracts a sole proprietor relies on. The firm does not provide accounting or tax filing services and works alongside the client’s CPA.
Bay Legal, P.C. serves businesses statewide from offices in Palo Alto and Los Angeles, including owners across San Francisco and the wider Bay Area.
Frequently Asked Questions
Do I have to register a sole proprietorship in California?
Not with the Secretary of State — there is no formation filing. You may still need a city or county business licence, a seller’s permit if you sell tangible goods, industry-specific licensing, and a fictitious business name statement filed with the county if you trade under a name other than your own.
Does a sole proprietorship pay the $800 franchise tax?
No. It is the only California structure that does not. LLCs owe it under Revenue and Taxation Code section 17941 and corporations under section 23153, payable whether or not the business is profitable. For a business earning very little, avoiding that $800 is the strongest argument for staying unincorporated while testing an idea.
Can a sole proprietor hire employees?
Yes. A sole proprietorship has one owner, not one worker. Hiring brings the same obligations as any employer: an EIN, registration with the Employment Development Department, payroll tax withholding, and workers’ compensation from the first employee. Worker classification under Labor Code section 2775 applies in full.
What is a fictitious business name statement?
A filing with the county clerk required when you trade under a name other than your own surname, under Business and Professions Code section 17900 and following. It must be published in a local newspaper, lasts five years, and must be renewed. Until it is filed, California law can bar you from suing on a contract made under that name.
Am I personally liable for business debts?
Entirely. There is no legal separation between you and the business, so a commercial lease default, an unpaid supplier, a customer injury, or an employee claim reaches your personal assets. Insurance covers part of it. Forming an entity is what creates separation, and it is the main reason owners eventually do.
When should I convert to an LLC?
Usually at one of four triggers: taking premises, hiring a first employee, signing a contract large enough that failing it would hurt, or reaching profit where the $800 minimum stops being material. Converting is straightforward — the assets and contracts move to the new entity.
Related Questions
Is a sole proprietorship the same as being self-employed?
Effectively yes for tax purposes, though “self-employed” describes how you earn and “sole proprietorship” describes the legal form. An independent contractor with no entity is a sole proprietor whether or not they think of themselves that way.
Can two people run a sole proprietorship together?
No. Two or more owners without a formed entity are a general partnership by default, which carries unlimited liability for each partner including for the other’s acts. That default is rarely what anyone would choose.
Does a fictitious business name protect my brand?
No. It is a public record linking a trading name to a person, not a property right. Trademark registration is what stops someone else using the name.
What happens to a sole proprietorship when the owner dies?
It ends. The business has no separate existence, so assets pass through the owner’s estate and contracts may terminate. This is one reason a business with real value should be held in an entity.
Talk to a California business attorney
A sole proprietorship is the right answer more often than formation services suggest, and the wrong one the moment real exposure appears. To discuss whether yours has reached that point, call the office nearest you or email intake.
Bay Legal, P.C. — serving California statewide
Northern California office
667 Lytton Ave Ste 3, Palo Alto, CA 94301
(650) 668-8000
Southern California office
3211 Cahuenga Blvd W Ste 212, Los Angeles, CA 90068
(213) 668-8000
Intake: intake@baylegal.com
Fax: (650) 963-0041
Website: https://baylegal.com
This page is general information about California law and does not constitute legal advice or create an attorney-client relationship. Bay Legal, P.C. does not provide tax advice. For advice on your specific situation, contact a licensed California attorney and a qualified tax professional.