Sole Proprietor to LLC in California

Most of the owners who ask me about this are already in business. They started as sole proprietors because it cost nothing, the business grew, and now someone (a landlord, a client, a new hire) has made the risk feel real. This page covers what the LLC protects in California, what it costs, what it doesn’t change, and how to move an existing sole proprietorship into an LLC without dropping anything along the way.

What’s the difference between a sole proprietorship and an LLC?

A sole proprietorship is you, doing business with no entity in between. An LLC is a separate legal person that owns the business, signs its contracts, and owes its own debts.

California doesn’t require any filing to be a sole proprietor. If your business name doesn’t include your surname, or suggests other owners with words like “& Associates,” it’s a fictitious business name (Bus. & Prof. Code § 17900(b)(1) and (c)). You file a fictitious business name statement within 40 days of starting to do business under it (Bus. & Prof. Code § 17910(a)). Your city may also require a business license. That’s the whole setup.

An LLC exists when the Secretary of State files its articles of organization (Corp. Code § 17702.01(d)). From then on, it’s “an entity distinct from its members” (Corp. Code § 17701.04(a)). I cover formation itself on entity formation.

	Sole proprietorship	Single-member LLC
State formation filing	None	Articles of organization
Business debts	Yours personally	The LLC’s
Your own negligence	Yours personally	Still yours personally
Federal income tax	Schedule C	Schedule C by default
California annual tax	None	$800 minimum, plus a fee from $250,000 of California income
California return	Your personal return only	Form 568 plus your personal return
Statement of Information	None	Within 90 days, then every two years
Can elect S corp taxation	No	Yes

What does an LLC protect you from in California?

An LLC protects your personal assets from the business’s debts and from claims based only on the fact that you own it. It doesn’t protect you from what you personally do wrong, or from what you personally sign.

The statute says the LLC’s debts, obligations, and liabilities, “whether arising in contract, tort, or otherwise,” are solely the LLC’s, and don’t become a member’s debts solely by reason of the member acting as a member or manager (Corp. Code § 17703.04(a)). The same section keeps a member liable for the member’s own participation in tortious conduct and for any written guarantee the member signs (§ 17703.04(c)).

Take Sofia, a Camarillo event photographer, and what could go wrong in her business.

• Studio lease. Sofia’s LLC signs a three-year lease for a small studio. The business slows and the LLC can’t pay. The landlord’s claim is against the LLC. If Sofia signed a personal guarantee, which many landlords require, the landlord can also come after her. See personal guarantees on California commercial leases.
• Her assistant’s car accident. Her part-time assistant causes an accident driving to a shoot. The injured driver’s claim against the business is the LLC’s liability, and Sofia’s house and savings aren’t exposed merely because she owns the LLC.
• Her own mistake. Sofia sets up a light stand badly and a wedding guest trips over it. She was personally negligent, so the guest can sue her personally whether or not there’s an LLC. Her liability insurance is what protects her there.

The shield also depends on how you run the company. A court can disregard an LLC under the same alter ego rules that apply to corporations (Corp. Code § 17703.04(b)). Commingling money is the usual way owners lose the protection; see piercing the corporate veil in California and opening an LLC bank account.

The California marriage issue

For married sole proprietors, the exposure is bigger than most realize. In California the community estate is liable for a debt incurred by either spouse during marriage, regardless of which spouse manages the property or signed for the debt (Fam. Code § 910(a)). Property acquired during marriage while living in California, including each spouse’s earnings, is generally community property (Fam. Code § 760). A sole proprietor’s business debt can therefore reach the family home and a spouse’s paycheck. With an LLC, the business debt stays in the LLC unless someone guaranteed it. If both spouses will own the LLC, see spouses owning an LLC together.

What about your personal creditors?

The protection runs the other way too, in a limited form. If you’re sued personally, a creditor trying to reach your LLC interest gets a charging order, which is a lien on your distributions, and the statute makes that the exclusive remedy against the interest (Corp. Code § 17705.03(a) and (f)). A court can still foreclose on the interest if distributions won’t pay the judgment in a reasonable time (§ 17705.03(b)(3)). For a one-owner LLC, I don’t plan around this protection. My broader view of what works is on asset protection for business owners.

Does an LLC change my taxes?

Federally, not by default. California adds the LLC’s own annual tax. A single-member LLC is disregarded for federal income tax unless it elects otherwise, so you keep filing Schedule C and paying self-employment tax.

California follows the federal classification for income tax, with an exception. Even a disregarded LLC stays subject to the LLC tax, the LLC fee, and the LLC return requirement (Rev. & Tax. Code § 23038(b)(2)(B)(iii)). The LLC tax applies to every LLC doing business in California and to every LLC whose articles the Secretary of State has accepted (Rev. & Tax. Code § 17941(a) and (b)). It’s due by the 15th day of the fourth month of the LLC’s taxable year (Rev. & Tax. Code § 17941(c)). The dollar amount and its exceptions are on the California LLC $800 tax.

Once California income reaches $250,000, the LLC also owes a fee that starts at $900 (Rev. & Tax. Code § 17942(a)(1)). The fee is based on gross income plus cost of goods sold, not profit. See the California LLC gross receipts fee.

What that costs in dollars

Sofia’s photography business grosses $95,000 and nets $70,000. As a sole proprietor, her federal and California income tax and her self-employment tax are the same as they’d be with a single-member LLC. The LLC adds the $800 annual tax, the Statement of Information every two years, and a Form 568 for her tax preparer. She’s paying at least $800 a year, plus the filing and a larger preparation bill, to keep the studio lease and her assistant’s mistakes off her personal balance sheet.

An LLC also opens a door a sole proprietorship can’t: the S corporation election. When Sofia’s profit grows well past a reasonable salary, her LLC can elect S status without forming a new entity. See single-member LLC or S corp election and the overview on LLC vs. S corp in California.

When is staying a sole proprietor fine?

Staying a sole proprietor is reasonable when the business is small, signs no long-term obligations, has no employees, and the realistic risks are covered by insurance. Examples: a freelance writer, a part-time bookkeeper working from home, a consultant testing an idea.

These situations push the answer toward an LLC or another entity.

• Obligations that outlive a bad month. A commercial lease, an equipment loan, or a vendor contract with minimum purchases.
• Other people’s actions. Employees, subcontractors, or a partner whose mistakes could become your debt. If you hire, read employee or independent contractor in California first.

Licensed professionals are a separate case. Nothing in the LLC statute permits a California LLC to render professional services as the professional corporation law defines them (Corp. Code § 17701.04(e)). That generally means services that can be lawfully rendered only under a license from a Business and Professions Code board (Corp. Code § 13401(a)). A therapist, dentist, or CPA leaving sole proprietorship usually needs a professional corporation instead.

How do I change a sole proprietorship to an LLC in California?

You form a new LLC and move the business into it. There’s no statutory conversion from sole proprietorship to LLC, because there’s no existing entity to convert. Take these steps in order:

1. File articles of organization with the Secretary of State (Corp. Code § 17702.01(a)).
2. File the Statement of Information within 90 days, then every two years (Corp. Code § 17702.09(a)). It names the LLC’s agent for service of process; see registered agents in California.
3. Sign an operating agreement. Even with one member, it proves the LLC is a real, separate company and says who takes over if you die or become incapacitated. See the California LLC operating agreement.
4. Sort out the EIN. The IRS lets a single-member LLC use the owner’s sole proprietor EIN only if it doesn’t elect corporate or S taxation, has no employees, and owes no excise tax. A single-member LLC that files employment taxes needs its own (IRS, Do you need a new EIN?). I usually recommend a new one either way, so the LLC’s identity is clean from day one.
5. Open an LLC bank account and stop running business money through your personal account.
6. Move the business into the LLC. Assign contracts and receivables to the LLC. Ask your landlord to consent to assigning the lease, since most leases require it. Move equipment by a written bill of sale or assignment.
7. Handle the business name. A fictitious business name statement you filed as a sole proprietor belongs to you as the registrant. If the LLC will use that name, the LLC files its own statement (Bus. & Prof. Code § 17910(a)). See DBAs and fictitious business names.
8. Update licenses, permits, and insurance to name the LLC. Check with each agency, because some treat a new entity as a new licensee.
9. Give clients a new W-9 and invoice in the LLC’s name from the switch date forward.

Once formed, the recurring deadlines are on California LLC annual requirements. If you own your business with someone else rather than alone, you’re a partnership already, whether or not you signed anything; see partnership vs. multi-member LLC.

Frequently asked questions

Should I start as a sole proprietor or an LLC in California?

Start as a sole proprietor if the business is a low-risk test with no lease, employees, or long contracts, and carry insurance. Form the LLC before you sign obligations you couldn’t pay personally. Forming later is fine, but contracts signed in your own name stay yours until they’re assigned.

Is a single-member LLC taxed the same as a sole proprietorship?

Federally, yes, by default: you file Schedule C and pay self-employment tax. California still applies the LLC tax, the LLC fee, and the LLC return requirement to it (Rev. & Tax. Code § 23038(b)(2)(B)(iii)). The LLC can also elect S corporation taxation later, which a sole proprietorship can’t.

Does an LLC protect me if I’m personally sued?

Partly. A personal creditor can get a charging order against your distributions, which is the exclusive remedy against your LLC interest (Corp. Code § 17705.03(f)). But the LLC won’t protect you from your own negligence at work, and a court can foreclose on the interest in some cases.

How much does an LLC cost per year in California?

Expect the $800 annual tax, a Statement of Information every two years, and the added cost of preparing Form 568. The LLC fee starts at $900 once total income from California sources is $250,000 or more (Rev. & Tax. Code § 17942(a)(1)). My formation fee is on fees.

Can a sole proprietor have employees in California?

Yes. A sole proprietor can hire employees and must run payroll through the EDD. Those employees’ mistakes on the job can become the owner’s personal liability, which is one of the main reasons to form an LLC before hiring.

Do I need a DBA if I form an LLC?

Only if the LLC does business under a name other than the name in its articles of organization (Bus. & Prof. Code § 17900(b)(5)). If your sole proprietorship used a trade name and the LLC keeps using it, the LLC files its own fictitious business name statement (Bus. & Prof. Code § 17910(a)).