California LLC sole proprietor corporate tax obligations

Quick answer: No — a single-member LLC (sole proprietor) is generally not taxed as a corporation; it's a "disregarded entity" that reports its income on the owner's personal return. But in California, that LLC will typically still owe the state's $800 minimum franchise tax, which applies even though the LLC isn't taxed as a corporation.

What it is

For federal tax purposes, a single-member LLC is not automatically a corporation. IRS Publication 334 explains that generally, for income tax purposes, a single-member LLC is disregarded as an entity separate from its owner and reports its income and deductions on its owner's federal income tax return, and if the LLC is not engaged in farming and the owner is an individual, they may use Schedule C (Form 1040).¹ Publication 583 confirms this same point: an LLC may be classified for federal income tax purposes as either a partnership, a corporation, or an entity disregarded as separate from its owner by applying the rules in Regulations section 301.7701-3.²

This is different from an LLC that elects corporate treatment. Publication 542 notes that an LLC can elect to be treated as an association taxable as a corporation by filing Form 8832, Entity Classification Election.³ Absent that election, a single-owner LLC is not a corporation for federal income tax purposes.

How it works

Federally, you (the individual owner) report the business's profit or loss on Schedule C of your own Form 1040, and pay self-employment tax on the net earnings — you are not filing a separate corporate return, and the LLC itself pays no federal corporate income tax.

California, however, layers its own entity-level tax on top of this federal treatment. The state chart on California income and franchise tax basics states plainly: nearly every entity owes the $800 minimum franchise tax.⁴ This franchise tax is separate from — and not dependent on — whether the entity is a "corporation" for federal tax purposes; it's a California-specific charge tied to being an LLC (or other registered entity) doing business in the state.

Risks and limits

• Federal vs. state treatment differ. Being a disregarded entity for IRS purposes doesn't exempt the LLC from California's separate franchise tax regime.
• Filing deadlines still apply. California's chart notes calendar-year corporations file by April 15 (S corps March 15); the $800 minimum franchise tax has its own first-year timing rules,⁵ so if the LLC is taxed as a corporation (by election) different deadlines and rules kick in. A disregarded single-member LLC's income is reported with the owner's individual return, due April 15 with an automatic no-form extension to October 15 (payment still due April 15).⁶
• Electing corporate treatment changes everything. If the LLC files Form 8832 to be taxed as a corporation, it becomes subject to California's corporate tax rules (8.84% for C corporations) rather than pass-through treatment, per the state's income and franchise tax chart. California taxes individuals at 1%–12.3% plus a 1% surcharge on income over $1M (13.3% top)... C corporations pay 8.84% (banks 10.84%); nearly every entity owes the $800 minimum franchise tax.⁷

In practice

A California single-member LLC that hasn't elected corporate status pays no federal or state corporate income tax — profits flow to the owner's personal return. But it will almost certainly still owe California's $800 annual minimum franchise tax simply for being a registered LLC in the state, regardless of profitability or federal disregarded-entity status.

Because franchise tax timing, first-year exceptions, and any corporate election choices depend on your specific formation date and elections, it's worth confirming your situation with a CPA licensed in California.