Most people pick their business entity based on what a friend told them at a barbecue, then spend the next decade overpaying the IRS by five figures a year. The s corp c corp llc comparison is not an academic exercise. It is the single decision that quietly determines how much self-employment tax you pay, whether your profits get taxed once or twice, and how exposed your personal assets are when something goes wrong. Get it right and you keep tens of thousands of dollars. Get it wrong and you fund the Treasury for no reason.

Here in California, the stakes are even higher because the state layers its own franchise tax and gross receipts fees on top of federal rules. A choice that looks clever on a federal return can quietly cost you an extra $800 to several thousand dollars a year at the state level. So let us cut through the noise and break down exactly how these three structures behave with real numbers, real personas, and the specific traps that catch business owners every single year.

Quick Answer: The S Corp C Corp LLC Comparison in Plain English

An LLC is a legal shell that protects your personal assets, but by default it is taxed like a sole proprietorship or partnership, which means all your net profit gets hit with self-employment tax. An S Corp is a tax election (not an entity type) that lets you split your income into salary and distributions, so only the salary portion pays payroll tax. A C Corp is a separate taxpaying entity that pays a flat 21 percent corporate rate, but its profits get taxed a second time when distributed as dividends.

For most profitable small businesses earning between $60,000 and $400,000 in net income, the S Corp election wins. The C Corp shines for businesses reinvesting heavily, seeking venture capital, or offering rich fringe benefits. The plain LLC wins when profits are low or you want maximum simplicity. The right answer depends entirely on your numbers, and that is exactly what we are going to map out.

How the S Corp C Corp LLC Comparison Affects Your Tax Bill

The core difference between these structures is not the paperwork. It is how the IRS taxes the money your business earns. Let us define each clearly before we run the numbers.

LLC Taxation: Simple but Potentially Expensive

A Limited Liability Company (in plain English: a legal structure that separates your business from your personal assets) is a creature of state law. The IRS does not even have an “LLC” tax box. By default, a single-member LLC is taxed as a sole proprietorship and a multi-member LLC is taxed as a partnership. All net profit flows to your personal return and faces two layers of tax: ordinary income tax plus the 15.3 percent self-employment tax that covers Social Security and Medicare.

Here is the painful part. If your LLC nets $120,000, you pay self-employment tax on roughly $110,000 of that after the deductible half adjustment. That is close to $16,500 in payroll taxes alone, before you even touch income tax. Many business owners never realize how much of their profit evaporates into self-employment tax until they see it itemized.

S Corp Taxation: The Salary and Distribution Split

An S Corporation is not a different business entity. It is a tax election you make by filing Form 2553 with the IRS. Your LLC or corporation keeps operating exactly as before, but now the IRS lets you pay yourself a reasonable salary and take the rest of the profit as a distribution. Only the salary is subject to payroll tax. The distribution is not.

Take that same $120,000 in profit. If you pay yourself a reasonable salary of $70,000 and take $50,000 as a distribution, you only pay the 15.3 percent payroll tax on the $70,000 salary. That saves roughly $7,650 in self-employment tax compared to the default LLC treatment. This is the engine behind why the S Corp election dominates the s corp c corp llc comparison for profitable service businesses.

C Corp Taxation: The Double Taxation Reality

A C Corporation is a fully separate taxpayer. It files its own return (Form 1120) and pays a flat 21 percent federal rate on its profits. The catch is double taxation. When the corporation distributes profits to you as a dividend, you pay tax again at the qualified dividend rate of 15 or 20 percent on your personal return.

On $120,000 of corporate profit, the company pays $25,200 in corporate tax. If it then distributes the remaining $94,800 as a dividend, you pay another 15 percent, or about $14,220. Your total tax burden approaches $39,000. That is why C Corps only make sense when you are reinvesting profits inside the company rather than pulling them out.

Key Takeaway: For profit between $60,000 and $400,000 that you intend to take home, the S Corp election almost always produces the lowest total tax. The C Corp only wins when profits stay inside the business.

Which Entity Fits Your Taxpayer Persona?

The best structure depends on who you are and how your business actually operates. Here is how the s corp c corp llc comparison plays out across real personas.

The Solo Consultant or Freelancer

If you are a 1099 consultant netting $90,000, you are the textbook S Corp candidate. Your self-employment tax under a plain LLC would be roughly $12,700. By electing S Corp status and paying yourself a reasonable $55,000 salary, you shave several thousand dollars off that payroll tax bill. Our team frequently helps self-employed professionals cross this threshold at the right time instead of too early.

The Real Estate Investor

Here is a crucial exception. Real estate investors who hold rental property should almost never put that property inside an S Corp. Rental income is passive and is not subject to self-employment tax anyway, so the S Corp salary requirement adds cost with no benefit. Worse, moving appreciated property out of an S Corp later can trigger taxable gain. For buy-and-hold rentals, a plain LLC taxed as a partnership is usually the cleaner answer.

The Startup Chasing Venture Capital

If you plan to raise money from venture capital firms or issue multiple classes of stock, the C Corp is your structure. Investors expect Delaware C Corps, and S Corps are legally capped at 100 shareholders with only one class of stock. The Qualified Small Business Stock exclusion under Section 1202 can also let early C Corp shareholders exclude up to $10 million of gain on a sale, a benefit no other structure offers.

The High-Income Professional

Doctors, attorneys, and engineers earning $300,000 or more often benefit from an S Corp to reduce payroll tax, but they must watch the reasonable salary rules closely. The IRS scrutinizes high earners who pay themselves tiny salaries to dodge payroll tax. A balanced tax planning strategy keeps your salary defensible while still capturing meaningful savings.

KDA Case Study: LLC Owner Saves Big With a Strategic S Corp Restructure

Marcus, a 1099 marketing consultant in Sacramento, came to us operating as a single-member LLC netting $145,000 a year. He was paying self-employment tax on nearly all of it, roughly $20,500 annually, and had no idea he was leaving money on the table. He assumed an LLC was the end of the conversation because that is the entity his attorney had set up years earlier.

We ran a full s corp c corp llc comparison on his actual numbers. The verdict was clear. We elected S Corp status for his existing LLC by filing Form 2553, set a defensible reasonable salary of $85,000 based on market data for his role, and structured the remaining $60,000 as a distribution. That single change eliminated payroll tax on the $60,000 distribution, saving him about $9,180 in the first year alone.

We also set up compliant payroll, handled the California S Corp franchise tax obligations, and built a quarterly estimated tax plan so he would never face a surprise penalty. Marcus paid roughly $3,200 for the restructure and ongoing compliance support. Against $9,180 in first-year savings, that is a 2.9x return in year one, and the savings repeat every year he stays profitable. He now keeps thousands more annually without changing a single thing about how he serves clients.

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.

S Corp vs LLC vs C Corp: Side-by-Side Comparison

Notice the California column. Our state does not let any entity off free. The $800 minimum franchise tax applies across the board, and the S Corp pays a 1.5 percent state tax on net income on top of federal pass-through treatment. This is why a federal-only analysis will mislead California business owners. According to the IRS guidance on S Corporations, the federal election is just one layer of a multi-state picture.

What the IRS Won’t Tell You About Reasonable Salary

The single biggest mistake in the s corp c corp llc comparison is abusing the reasonable salary rule. Business owners hear that distributions avoid payroll tax and immediately try to pay themselves a $12,000 salary while taking $150,000 in distributions. This is a red flag that invites an audit.

The IRS requires that S Corp owner-employees pay themselves a salary that reflects what the market would pay someone to do their job. If you perform the core revenue-generating work of your business, your salary must be substantial. When the IRS recharacterizes your distributions as wages, you owe back payroll taxes plus penalties and interest.

Red Flag Alert: A salary under 30 percent of total compensation on a service business draws attention. Document your salary with market data, job descriptions, and hours worked. This simple file can resolve an audit question in minutes instead of months.

How to Set a Defensible Salary

1. Research market rates for your exact role using Bureau of Labor Statistics data and industry surveys
2. Document your hours and duties so you can justify why the figure is reasonable
3. Keep the ratio sensible, generally landing salary somewhere between 40 and 60 percent of profit for most service businesses
4. Revisit annually as your income grows so the figure stays current and defensible

When Should You Elect S Corp Status?

Timing matters as much as the decision itself. Electing too early adds payroll and compliance costs before the tax savings justify them. Electing too late leaves savings on the table.

Yes, elect S Corp status if:

• Your net profit consistently exceeds $60,000 per year
• You can justify a reasonable salary from the remaining profit
• You are willing to run payroll and file the extra return
• Your income is active, not passive rental income

No, stay a plain LLC if:

• Your net profit is under $40,000
• You want maximum simplicity with no payroll
• You hold rental real estate or other passive assets
• Your business runs at a loss or has highly variable income

Do I Have to Form a New Entity to Become an S Corp?

No, and this confuses almost everyone. You do not dissolve your LLC and start over. You keep your existing LLC and simply file Form 2553 to elect S Corp tax treatment. Your legal entity stays the same, your EIN stays the same, and your bank accounts stay the same. Only the tax treatment changes. The deadline to elect for the current tax year is generally within two months and 15 days of the start of the tax year, though late election relief exists under Revenue Procedure 2013-30.

What Happens to My Entity Choice if I Move or Grow?

Your entity decision is not permanent. As profits climb past $400,000 or you begin reinvesting heavily, revisiting the C Corp question makes sense. If you relocate out of California, your state tax math shifts entirely. The smart move is an annual review rather than a set-and-forget approach. For a full breakdown of how to optimize an S Corp in California, see our complete guide to S Corp tax strategy in California.

Frequently Asked Questions

Can an LLC be taxed as an S Corp and a C Corp at the same time?

No. An LLC can elect to be taxed as either an S Corp or a C Corp, but never both simultaneously. You choose one election. Most profitable small businesses choose the S Corp election for the payroll tax savings while keeping the flexibility of their LLC legal structure.

Does an S Corp really avoid self-employment tax?

It reduces it, not eliminates it. You still pay payroll tax on your reasonable salary. The savings come from the distribution portion, which is not subject to the 15.3 percent self-employment tax. The larger your defensible distribution, the greater your savings.

Why would anyone choose a C Corp with double taxation?

Because the 21 percent flat rate is attractive for businesses reinvesting profits rather than distributing them, and because venture investors require C Corps. The Section 1202 stock exclusion can also deliver massive tax-free gains on a future sale, which no other entity offers.

Book Your Entity Structure Strategy Session

If you are running an LLC and paying self-employment tax on every dollar of profit, there is a strong chance you are overpaying by $5,000 to $15,000 a year. The right entity choice is not guesswork, it is math applied to your specific numbers. Let us run your actual figures through a full s corp c corp llc comparison and show you exactly which structure keeps the most money in your pocket. Click here to book your consultation now and walk away knowing your optimal entity structure.

This information is current as of 10/19/2026. Tax laws change frequently. Verify updates with the IRS or FTB if reading this later.