Here is the short answer most articles bury: a sole proprietorship is the default you already are if you sell something without registering. An LLC is a legal wrapper that separates your business from your personal assets. An S-corp is not a business type at all — it is a tax election you can put on top of an LLC. For most first-timers, the right path is: stay a sole proprietor until you make real money, form an LLC for liability protection, and only add the S-corp election once your profit clears roughly $80,000–$100,000.

That last point trips up almost everyone, so let's slow down and make it obvious.

The one thing to understand first: S-corp is a tax election, not an entity

You can legally form three things with your state: a sole proprietorship (automatic, no paperwork), an LLC, or a corporation. You cannot "form an S-corp." Instead, you form an LLC (or a corporation) and then file a form with the IRS asking to be taxed as an S-corp.

So the real-world choices are:

  1. Sole proprietorship — no registration, no liability shield.
  2. LLC — registered, gives you a liability shield, taxed the same as a sole proprietor by default.
  3. LLC + S-corp election — same LLC, but you ask the IRS to tax it as an S-corp to save on self-employment tax.

The dominant strategy for profitable solo operators is #3 — an LLC with the S-corp election — not a standalone corporation. The LLC keeps the paperwork light; the election handles the tax savings. Hold that thought; the numbers below explain when it's worth it.

One-screen comparison table

Sole Proprietorship LLC (default taxation) LLC + S-Corp Election
Setup cost $0 $50–$500 (state filing) LLC cost + payroll setup
Annual upkeep $0 $0–$800 (state-dependent) $1,500–$3,000+ (payroll, extra tax return)
Personal liability protection None Yes Yes
How profit is taxed Pass-through to you Pass-through to you Pass-through, but split into salary + distributions
Self-employment tax (15.3%) On all net profit On all net profit Only on your "reasonable salary"
Payroll required? No No Yes — you must pay yourself a W-2 wage
Tax return Schedule C on your 1040 Schedule C (single-member) Separate 1120-S business return
Best for Service businesses under ~$40k profit, low risk Any business wanting a liability shield Profit consistently above ~$80k–$100k

If you read only one row, read self-employment tax. That 15.3% is the entire reason the S-corp election exists, and it's where the savings come from.

The pick-for-me decision tree

Walk down this list and stop at the first "yes."

  • Are you just testing an idea, side-hustling, or earning under ~$40k in net profit with low liability risk (a writer, coach, or consultant who uses solid contracts)? → Stay a sole proprietor. It's free, simple, and often the correct permanent choice — not a "beginner mistake."
  • Do you have personal assets to protect, sign client contracts, carry inventory, have employees, or face any real chance of being sued? → Form an LLC. This is the safety line most people should cross.
  • Is your net profit consistently above ~$80,000–$100,000, and are you willing to run payroll and file an extra tax return? → Form an LLC and elect S-corp taxation.
  • Are you in California, New York, or another high-fee state? → Form the LLC for protection, but push your S-corp break-even point higher (see the state section below).

Most first-timers land on the first or second bullet. If you're not sure whether you even need to register, our deeper walkthrough on whether you need an LLC to start a business covers the edge cases.

At what income does the S-corp election actually save money?

This is the question every honest article skips. The S-corp saves you self-employment tax, but it adds real costs. You only win when the savings beat those costs.

How the savings work. As a sole proprietor or default LLC, you pay 15.3% self-employment tax on all net profit (Social Security + Medicare). With an S-corp election, you split your profit into two buckets:

  • A reasonable salary — you pay the 15.3% payroll tax on this.
  • Distributions — the rest of the profit, which avoids the 15.3% tax entirely.

Say your business nets $120,000. You pay yourself a $70,000 salary and take $50,000 as distributions. You skip roughly 15.3% on that $50,000 — about $7,650 in tax savings before accounting for some Medicare nuances.

Now subtract the real costs the savings have to clear:

  • Payroll software or a payroll service: $500–$1,500/year.
  • A separate 1120-S business tax return prepared by an accountant: $800–$2,000/year.
  • Your own time on quarterly filings, W-2s, and bookkeeping.

Add those up and you're spending $1,500–$3,000+ per year to run an S-corp. That's why the election rarely pays off below about $80,000 in profit, and why it's clearly worth it above $100,000. Between those numbers, it depends on your state and how much you hate paperwork.

For the IRS rules behind all of this, see the IRS pages on S corporations and self-employment tax.

What is a "reasonable salary"?

The catch with an S-corp is that you can't pay yourself a $1 salary and take everything as tax-free distributions. The IRS requires a reasonable salary — roughly what you'd pay someone else to do your job.

In practice, accountants benchmark your salary against your role, industry, location, and experience (job sites and salary surveys are common references). A frequent rule of thumb is the 60/40 split — about 60% as salary, 40% as distributions — but that's a starting point, not a law. Pay yourself too little and you risk an audit that reclassifies your distributions as wages plus penalties. This is the single most important S-corp compliance item, and the main reason you'll want an accountant.

How state taxes wreck the national math

This is where generic advice gets dangerous. The "$50k and you should be an S-corp" rule you'll see everywhere assumes you live in a low-fee state. You might not.

  • California charges an $800 minimum annual franchise tax on LLCs, plus a 1.5% S-corp tax on net income (minimum $800) if you elect S-corp status. A Californian pays the franchise tax either way, and the S-corp election adds a second layer — pushing the break-even point higher.
  • New York has LLC publication requirements (you must publish notice in two newspapers, which can cost hundreds to over a thousand dollars in pricey counties) and a separate filing fee structure.
  • Texas, Wyoming, and Florida are far cheaper, with no state income tax and modest fees — which is why national averages mislead. (If you're forming in the Lone Star State, our step-by-step Texas business guide walks the exact filings.)

Before you elect S-corp status, look up your state's LLC franchise tax and any entity-level S-corp tax. In a high-fee state, the profit threshold where the election pays off can climb to $100k+.

The order of operations (do this, not that)

  1. Confirm you're already a sole proprietor. If you've sold anything under your own name, you are one — no action needed.
  2. Get an EIN from the IRS. It's free and takes minutes at irs.gov. Use it instead of your SSN on business paperwork.
  3. Form the LLC with your Secretary of State when you want liability protection. File articles of organization, pay the fee, and create an operating agreement (even as a single owner).
  4. Open a business bank account and keep business and personal money strictly separate. Mixing them can void your liability shield.
  5. Only then consider the S-corp election. When profit clears the threshold, file IRS Form 2553 (generally within ~2.5 months of the tax year you want it to start) and set up payroll.

Notice the order: LLC first, S-corp election second. You never skip straight to "S-corp." For the full launch sequence beyond structure, see our guide on everything you need to get a business going.

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Converting from a sole proprietorship — the actual process

If you already operate as a sole proprietor and want to upgrade:

  • To an LLC: File articles of organization with your state, pay the filing fee, get a new EIN if needed, move contracts and bank accounts under the LLC, and update licenses. Budget a few hundred dollars and an afternoon.
  • To S-corp taxation: First be an LLC (or corporation), then file Form 2553 and start payroll. There's no "sole prop directly to S-corp" path — the LLC is the required step.

Frequently Asked Questions

Can an LLC really be taxed as an S-corp?

Yes — and it's the most popular setup for profitable solopreneurs. You form a normal LLC, then file IRS Form 2553 to elect S-corp taxation. You keep the LLC's simple paperwork and flexibility while gaining the self-employment tax savings of an S-corp. You do not give up your LLC; you just change how it's taxed.

Is staying a sole proprietor forever ever the right call?

Absolutely. For low-risk service businesses — freelance writers, designers, coaches, consultants who use clear contracts and carry liability insurance — and net profit under roughly $40,000, a sole proprietorship is often the correct permanent choice. It costs nothing, requires no annual filings, and the liability and tax advantages of an LLC may not outweigh the hassle at that level.

How much does an LLC cost per year?

It varies wildly by state. Filing runs $50–$500 once. Annual upkeep is $0 in some states but $800 in California (the franchise tax) and can include publication costs in New York. Always check your specific state before assuming the national "cheap and easy" framing applies to you.

Does forming an LLC lower my taxes?

By itself, no. A default single-member LLC is taxed exactly like a sole proprietorship — same Schedule C, same self-employment tax. The tax savings only appear when you add the S-corp election on top, and only when your profit is high enough to clear the added payroll and accounting costs. The LLC is for liability protection; the S-corp election is for tax savings.

What's the single biggest mistake people make here?

Treating "S-corp" as a starting entity and forming one too early. Running payroll and a separate business return costs $1,500–$3,000 a year, which eats any tax savings alive at low profit. Match the structure to your stage: sole prop to start, LLC for protection, S-corp election only when the numbers clearly justify it. When in doubt, run your numbers past a CPA — it's the cheapest insurance you'll buy.