LLC vs. S-Corp vs. C-Corp: Choosing Your Entity for a Bay Area Business

Tax Structure & Entity Decisions

The entity you choose shapes the taxes you pay, the liability you carry, and the paperwork you live with for years. For Bay Area founders and owners, the decision is rarely about one “best” structure — it’s about matching the right structure to your stage, your income, and your exit. Here is how the three core options actually compare, and where each one earns its keep.

The three structures at a glance

Most owners use one of three structures: the LLC, the S-Corporation, and the C-Corporation. A sole proprietorship is technically a fourth, but it offers no liability shield, so we treat it as a starting point rather than a destination. Before we go deep on each, it helps to see them side by side.

Notice that the S-Corp row and the LLC row describe the same underlying liability protection. That’s the first thing many owners misunderstand: an S-Corp is not a different kind of company. It is a tax election that an LLC or a corporation can make. Keep that distinction in mind — it makes the rest of this decision far simpler.

The LLC: flexible default

The Limited Liability Company is the most common starting structure for a reason. It gives you a liability shield between your business and your personal assets, it requires minimal formality, and by default it is taxed as a pass-through — profit flows to your personal return and is taxed once, at your individual rate.

Where the LLC shines

For a new or single-owner business with modest or uneven profit, the LLC is hard to beat. There’s no payroll to run, no separate corporate return in most single-member cases, and you keep the freedom to bring on partners or change your tax treatment later. Real estate investors in particular favor the LLC because it isolates liability property by property without forcing payroll mechanics onto rental income.

The LLC’s weak spot

Every dollar of LLC profit is generally subject to self-employment tax — 15.3% on the first ~$168,600 of net earnings and 2.9% above it. Once profit climbs past roughly $80,000–$100,000 of net income, that SE-tax bill is often what pushes owners to consider an S-Corp election. If you’re weighing whether you’ve crossed that line, our advisory team models it against your real numbers rather than a rule of thumb.

The S-Corp election: a tax tool, not an entity

An S-Corp election changes how your profit is taxed without changing your underlying company. The core benefit: you split your income into a reasonable salary (subject to payroll taxes) and distributions (not subject to self-employment tax). On meaningful profit, that split can save thousands a year.

The catch: reasonable compensation

The IRS requires S-Corp owners who work in the business to pay themselves a reasonable W-2 salary before taking distributions. Pay yourself too little to dodge payroll tax, and you invite an audit and back taxes. This is the single most scrutinized number in the S-Corp world, and getting it defensibly right is worth doing carefully — we cover the full playbook in our accounting and compensation work.

The cost of the election

The savings aren’t free. An S-Corp adds a separate 1120-S return, payroll filings, and California’s 1.5% franchise tax on net income (minimum $800). Those costs usually run a few thousand dollars a year, so the election only makes sense once the SE-tax savings clearly exceed them. For many Bay Area service businesses, that breakeven lands somewhere north of $80,000 in profit — but the honest answer is “it depends on your numbers.”

The C-Corp: built for scale and QSBS

The C-Corporation is its own taxpayer. It pays a flat 21% federal rate on profit, and when those profits are distributed as dividends, shareholders pay again — the classic “double taxation.” For a small, profit-distributing business, that’s usually a disadvantage. For a venture-backed startup, it’s often the only structure that works.

Why founders choose C-Corp anyway

Institutional investors generally require a Delaware C-Corp. It supports multiple stock classes, unlimited and non-U.S. shareholders, and clean equity compensation — none of which an S-Corp permits. Just as importantly, only C-Corp stock can qualify for the Qualified Small Business Stock (QSBS) exclusion under §1202, which can shelter up to $10 million (or 10x basis) of gain from federal tax after a five-year hold. For a successful exit, that single provision can dwarf years of double-tax friction.

The California $800 reality check

No matter which structure you pick, California wants its annual minimum. Every LLC, S-Corp, and C-Corp doing business in the state owes at least the $800 franchise tax — even in a loss year, with a narrow first-year exemption for corporations. On top of that:

LLCs owe an additional gross-receipts fee that climbs from $900 at $250,000 of revenue up to $11,790 above $5 million. S-Corps pay 1.5% of net income (above the $800 floor). C-Corps pay 8.84% of net income. These state-level costs change the math meaningfully, and they’re easy to overlook when you’re comparing federal rates alone. Owners outside the Tri-Valley can find local context on our Pleasanton, Livermore, Dublin, and San Ramon pages.

When to elect S-Corp status

Rather than a magic revenue number, think about three conditions that should all be true before you elect:

1. Consistent, meaningful profit

Your net profit is reliably above the breakeven where SE-tax savings outrun the added payroll and filing costs — often $80,000+ for a solo owner, lower with multiple owners.

2. You can support a real salary

You can pay yourself a defensible market wage and still have profit left over to distribute. If reasonable comp would eat nearly all your profit, the election saves little.

3. You’ll keep the structure long enough to benefit

The election makes sense as an ongoing discipline, not a one-year experiment. Setting it up, running payroll, and unwinding it later all carry cost. Our formation and restructure team handles the timing and the Form 2553 mechanics so the election takes effect cleanly.

Five entity mistakes we see most

Choosing a structure once isn’t the same as maintaining it. The errors below cost real money:

Electing S-Corp too early. Owners chase the SE-tax savings before profit justifies the added compliance, and net out behind. Underpaying reasonable comp. The most common audit trigger in the S-Corp world. Defaulting to C-Corp for a lifestyle business. Double taxation with no QSBS exit on the horizon is usually the wrong trade. Ignoring the California fee tiers. A high-revenue, low-margin LLC can owe a four- or five-figure state fee that an S-Corp would avoid. Never revisiting the choice. The right entity at $90,000 of profit may be wrong at $900,000. We review entity fit as part of ongoing small-business CPA services.

The typical entity path for a growing business

For many Bay Area owners, the entity decision isn’t a single fork — it’s a sequence that tracks profit and ambition over time. Seeing the arc makes each step feel less daunting.

Few businesses move through every stage, and the right path depends on your goals — a lifestyle service firm may happily stop at the S-Corp, while a venture-track startup jumps straight to a C-Corp. The value of seeing the whole map is that today’s choice doesn’t have to be permanent; it has to be right for where you are, with a clear view of where you might go next.

Frequently asked questions

Is an S-Corp better than an LLC?

Neither is universally better. An LLC can be taxed as an S-Corp. The real question is whether your profit is high enough that the S-Corp election’s self-employment-tax savings outweigh its added payroll and filing costs.

Can I switch entities later?

Yes. Most owners start as an LLC, add an S-Corp election when profit grows, and only some convert to a C-Corp when raising capital. Each change has tax consequences and timing rules, so it’s worth planning rather than reacting.

Does forming an entity in another state save California tax?

Generally no. If you operate in California, you owe California tax regardless of where you incorporated, and you’ll often pay fees in both states. The “Delaware or Nevada saves taxes” idea rarely holds for an operating Bay Area business.

What’s the cheapest entity to maintain in California?

A single-member LLC with modest revenue is usually the lightest, owing the $800 minimum and (above $250,000 in receipts) the gross-receipts fee. An S-Corp costs more to run but can save more in tax once profit is high.

Do I need a C-Corp to offer stock options?

To offer the clean, investor-standard equity and ISOs most startups want, yes — the C-Corp is the practical choice, and it’s the only one that opens the door to QSBS treatment.

How soon should I decide?

Before you form, ideally — but it’s never too late to review. Entity decisions compound, so an early conversation usually pays for itself.

This article is general information, not tax or legal advice. Entity and election decisions depend on your specific facts; please consult a qualified professional before acting.