Most business owners pick their entity structure the way they pick a phone plan: they choose whatever sounded good at the time and never revisit it, even as they overpay for years. That single decision, made once and forgotten, can quietly cost a California business owner $10,000 or more every single year in self-employment taxes, double taxation, and missed deductions. The fastest way to fix it is to stop guessing and start comparing side by side, which is exactly why a clear LLC vs S Corp vs C Corp chart is the most valuable planning tool most owners never use.

The problem is not that entity types are complicated. The problem is that nobody puts them next to each other in plain English and shows you the actual dollar consequences. In this guide, we do exactly that. We break down how each structure is taxed, who each one is built for, and the specific income thresholds where switching structures starts paying for itself. For a full breakdown of how the S Corp election works for California business owners, see our complete guide to S Corp tax strategy in California.

Quick Answer: What the LLC vs S Corp vs C Corp Chart Tells You

An LLC is a legal structure that protects your personal assets but, by default, taxes you like a sole proprietor, meaning you pay self-employment tax on every dollar of profit. An S Corp is a tax election that lets you split your income into salary and distributions, so you only pay self-employment tax on the salary portion. A C Corp is a separate taxpaying entity that pays a flat 21% corporate tax, but it faces double taxation when profits are distributed to owners as dividends.

Here is the shorthand most owners need. If you are earning under about $45,000 in net profit, a plain LLC usually wins on simplicity. Between roughly $45,000 and several hundred thousand in profit, the S Corp election almost always wins on tax savings. Above that, or if you are raising outside capital and reinvesting heavily, the C Corp starts to make sense. The chart below shows why.

The LLC vs S Corp vs C Corp Chart Explained

Before we dig into each structure, here is the side by side comparison that anchors this entire guide. Read it once, then come back to it after each section.

Key Takeaway: The single biggest swing on this chart is self-employment tax. That 15.3% line is where most of the savings live, and it is exactly what the S Corp election is designed to reduce.

How the LLC Is Actually Taxed (And Why It Traps Profitable Owners)

An LLC, or Limited Liability Company, is a legal shield. It separates your business liabilities from your personal assets, so if the business gets sued, your house and personal savings are generally protected. That legal protection is real and valuable. The confusion starts because an LLC is not a tax classification at all.

By default, a single-member LLC is taxed as a sole proprietorship, and a multi-member LLC is taxed as a partnership. In both cases, all of the net profit flows straight to your personal return, and you owe self-employment tax on every dollar. Self-employment tax is 15.3%, covering Social Security and Medicare (in plain English: it is the tax that replaces what an employer would normally split with you).

The LLC Math for a Real Owner

Take Marcus, a freelance web developer in Sacramento running his business through a single-member LLC. He nets $120,000 in profit. On that profit, before income tax even enters the picture, he owes roughly $16,900 in self-employment tax (the rate drops slightly above the Social Security wage base, but the Medicare portion continues). That is money leaving before he pays a cent of income tax.

Here is the trap. Marcus assumes the LLC is doing everything for him because his accountant “set it up as an LLC.” But the LLC structure alone does nothing to reduce that $16,900. Many self-employed professionals face this exact situation, and the fix is often a tax election, not a new company. If you want to run your own numbers, a self-employment tax calculator shows you the bill before you plan around it. Owners in this position should also review how KDA supports the self-employed with structure and strategy.

How the S Corp Election Changes the Chart

An S Corp is not a different company. It is a tax election you file with the IRS using Form 2553. Your LLC (or corporation) keeps existing, but the IRS now treats it differently for tax purposes. The magic is income splitting.

As an S Corp owner, you pay yourself a reasonable salary through payroll, and that salary is subject to payroll taxes. The remaining profit comes to you as a distribution, which is not subject to the 15.3% self-employment tax. That single mechanic is where the savings on the chart come from.

Marcus Under an S Corp

Return to Marcus and his $120,000 in profit. Suppose he sets a reasonable salary of $70,000 and takes the remaining $50,000 as a distribution. He pays payroll taxes on the $70,000 salary, roughly $10,700. But the $50,000 distribution avoids the 15.3% self-employment hit, saving him about $7,650 before adjusting for the salary deduction. After accounting for payroll costs and the added compliance, his net savings land in the $5,000 to $6,500 range every year.

Pro Tip: The word “reasonable” in reasonable salary is not optional. The IRS expects your salary to match what someone would earn doing your job. Pay yourself $15,000 on $120,000 of profit and you are inviting an audit.

Step-by-Step: How to Elect S Corp Status

1. Confirm your EIN – You need an Employer Identification Number. If you do not have one, apply free at IRS.gov (takes about 5 minutes).
2. Download Form 2553 – Use the current version directly from the IRS. This is the Election by a Small Business Corporation form.
3. Set a reasonable salary – Research comparable wages for your role and location. Document your reasoning.
4. File Form 2553 on time – Generally within 2 months and 15 days of the start of the tax year you want the election to take effect.
5. Run payroll – You must actually process a paycheck and file payroll tax returns. This is non-negotiable.

Business owners weighing this move should look at how KDA guides business owners through the timing and salary decisions that make or break the election.

When the C Corp Beats Both on the Chart

A C Corp is the default corporate structure and the only one on this chart that is a fully separate taxpayer. It files its own return, Form 1120, and pays a flat 21% federal corporate tax on its profits. The famous downside is double taxation: the corporation pays tax on its profits, then owners pay tax again on any dividends distributed to them.

So why would anyone choose it? Because for certain businesses, double taxation never happens in practice. If you reinvest profits back into the company instead of paying dividends, that second layer of tax does not trigger. Startups raising venture capital almost always operate as C Corps because investors require it and because founders reinvest heavily rather than take dividends.

Where the C Corp Wins

• You are raising outside capital – Venture and institutional investors generally require C Corp stock.
• You reinvest most profits – The 21% flat rate can beat high personal brackets when profits stay in the business.
• You offer robust benefits – C Corps can deduct a broader range of fringe benefits for owner-employees.
• You want the QSBS exclusion – Qualified Small Business Stock can allow founders to exclude significant gains at sale.

Key Takeaway: The C Corp only wins when you are building for scale, reinvestment, or a future sale. For the profitable owner who wants to take money home now, the S Corp almost always beats it.

KDA Case Study: Consulting Firm Owner Saves $9,200 by Reading the Chart

Priya ran a two-person marketing consultancy in Los Angeles as a multi-member LLC taxed as a partnership. The firm netted $185,000 in profit, split between Priya and her partner. Both were paying full self-employment tax on their shares, and neither had ever compared their structure against the alternatives. They came to KDA convinced they needed to become a C Corp because a friend told them “corporations pay less.”

When we walked them through the LLC vs S Corp vs C Corp comparison, the C Corp was clearly wrong for them. They took nearly all profit home each year, which meant double taxation would have made things worse, not better. The S Corp election, on the other hand, was a perfect fit.

KDA filed Form 2553 to elect S Corp status, set defensible reasonable salaries for both owners based on regional wage data, and built a compliant payroll process. In the first full year, the income splitting reduced their combined self-employment tax burden by approximately $9,200. They paid $3,100 for the restructuring, planning, and payroll setup, producing a first-year return of nearly 3x. More importantly, that savings now repeats every year they stay profitable.

Ready to see how we can help you? Explore more success stories on our case studies page to discover proven strategies that have saved our clients thousands in taxes.

Why Most Owners Pick the Wrong Structure

The most common mistake is treating entity choice as a one-time legal task instead of an ongoing tax decision. Someone forms an LLC online for $99, checks the box in their mind, and never revisits it even as profits climb past every threshold on the chart. The LLC keeps protecting them legally while silently overtaxing them.

The second mistake is copying someone else. A friend in a different business at a different income level says “become an S Corp” or “form a C Corp,” and the owner follows without running their own numbers. The chart makes it obvious that the right answer depends entirely on your profit level, your reinvestment plans, and your goals.

Red Flag Alert: The DIY S Corp

Filing Form 2553 yourself and then never running payroll is one of the fastest ways to trigger IRS scrutiny. If you claim S Corp treatment but take all your money as distributions with no salary, the IRS can reclassify those distributions as wages and hit you with back payroll taxes plus penalties. The election is only worth it when the payroll and salary pieces are done correctly.

California-Specific Considerations

California adds a layer that the federal chart alone does not show. Every LLC, S Corp, and C Corp doing business in California owes at least the $800 annual franchise tax. Beyond that minimum, the structures diverge. California LLCs also owe a gross receipts fee that scales with revenue. California S Corps pay the greater of $800 or 1.5% of net income. California C Corps pay the greater of $800 or 8.84% of net income.

This matters because California does not fully recognize the federal S Corp benefit at the state level in the same way. The 1.5% state tax on S Corp income slightly reduces the total savings compared to a state with no such tax. It rarely erases the benefit, but it needs to be in your math. This is exactly the kind of detail that a proper analysis through our tax planning services captures before you commit to a structure.

This information is current as of 8/21/2026. Tax laws change frequently. Verify updates with the IRS or the California Franchise Tax Board if reading this later.

Do I Need to Change My LLC to Get S Corp Benefits?

No. This is one of the most common points of confusion. You do not dissolve your LLC to become an S Corp. Your LLC stays exactly as it is legally. You simply file the S Corp election, and the IRS changes how it taxes the same company. You keep your LLC name, your bank account, and your legal protection while gaining the tax treatment. The election sits on top of the LLC; it does not replace it.

What If My Profit Fluctuates Year to Year?

Fluctuating profit is normal, and it does not automatically disqualify you from the S Corp. What matters is your typical profit level. If you consistently net enough for the distribution savings to exceed the added payroll and compliance costs, the election makes sense even in a down year. If you expect profit to drop below the roughly $45,000 threshold long term, the added complexity may not be worth it, and staying a plain LLC could be smarter. The key is to review the chart against your realistic multi-year outlook, not a single good or bad year.

Can I Switch Structures Later?

Yes, and many businesses do. A common path is to start as a simple LLC, elect S Corp status once profit crosses the threshold, and only consider a C Corp if the business begins raising outside capital or reinvesting aggressively. The structures on the chart are not permanent cages. That said, some switches carry tax consequences and timing rules, so changing structures should be planned deliberately rather than done on impulse. Revoking an S Corp election, for example, can lock you out of re-electing for five years.

Frequently Asked Questions

At what income does an S Corp start saving money?

For most owners, the S Corp election starts producing net savings once profit reliably exceeds roughly $45,000, because that is where the self-employment tax reduction on distributions outweighs the added payroll and compliance costs.

Is an LLC or S Corp better for a single-owner business?

It depends entirely on profit. A low-profit solo business is usually better as a plain LLC for simplicity. A profitable solo business almost always benefits from adding the S Corp election, since one owner can still split salary and distributions.

Why do startups almost always choose C Corp?

Venture capital investors generally require C Corp stock, and startups reinvest profits rather than distribute dividends, which avoids the double taxation downside while unlocking benefits like the Qualified Small Business Stock exclusion at a future sale.

Does an S Corp reduce California taxes too?

Partially. The federal self-employment tax savings still apply, but California charges S Corps the greater of $800 or 1.5% of net income, which trims the total benefit slightly compared to a no-income-tax state. It usually still comes out ahead.

Book Your Entity Structure Strategy Session

If you have been running the same entity structure for years without ever comparing it against the alternatives, there is a strong chance you are leaving thousands on the table every single year. The LLC vs S Corp vs C Corp decision is not about picking the fanciest name; it is about matching your structure to your exact profit level and goals so you keep more of what you earn. Let our strategy team run your real numbers, model each structure side by side, and show you the precise savings of getting this right. Click here to book your consultation now.

The IRS is not going to send you a letter telling you that you picked the wrong entity. That savings only shows up when you go looking for it.