Sole proprietor, LLC, or S-Corp?

When you start earning self-employment income, one of the first questions is 'do I need an LLC?' The honest answer: maybe, eventually, but probably not on day one. Picking the right business structure is a balance between legal protection, tax efficiency, and administrative overhead.

Sole proprietor

The default. The moment you earn a dollar doing freelance or contract work without forming anything, you're a sole proprietor. Your business income flows onto Schedule C of your personal tax return. You pay self-employment tax (15.3% on top of regular income tax) on your profit. Cheapest and simplest — zero legal setup, zero fees.

LLC (Limited Liability Company)

An LLC is a legal entity that separates your business liabilities from your personal assets. If your business gets sued, creditors usually can't reach your house or retirement accounts (assuming you keep finances properly separated — called the 'corporate veil'). For taxes, a single-member LLC is by default a 'disregarded entity' — it's taxed exactly like a sole proprietor. You get the legal shield without changing taxes.

S-Corp election

Once your self-employment profit gets large enough (usually around $50k–80k of profit per year), you can elect S-Corp tax treatment on your LLC. Under an S-Corp, you split your income into two parts: a reasonable salary (subject to self-employment tax) and distributions (not subject to self-employment tax). The savings can be $3,000–$10,000+ per year for higher earners.

The decision tree

• Earning under $30k from self-employment: stay a sole prop. Not worth the complexity.
• Earning $30k–80k with liability exposure: form an LLC for legal protection, keep default tax treatment.
• Earning $80k+ of profit consistently: consider S-Corp election, run the math with an accountant.
• Service businesses where you're the product (consultants, freelancers): LLC is almost always worth it once you're established.

The three structures side by side

The math at $100,000 of profit

Concrete numbers make the decision much clearer than abstractions. Suppose your business nets $100,000 of profit after expenses. As a sole proprietor or default-taxed LLC, roughly $92,350 of that is subject to the 15.3% self-employment tax — about $14,130 — before you even get to income tax. With an S-Corp election, you might pay yourself a defensible $60,000 salary and take $40,000 as distributions. The 15.3% FICA tax now applies only to the $60,000 salary, costing about $9,180. That is a gross savings of roughly $4,950 per year.

But gross savings are not net savings. Subtract the real costs of running an S-Corp: a payroll service at roughly $500-700 per year, a separate 1120-S business tax return at $800-1,500 from a CPA, and possibly higher state fees. Call it $1,800-2,500 all-in. Net benefit at $100k of profit: roughly $2,500-3,100 per year. Worth doing — but notice how fast the benefit shrinks at $60,000 of profit, where a $45,000 reasonable salary leaves only $15,000 of distributions and about $2,300 of gross savings that admin costs mostly eat. That is why the common breakeven advice clusters around $70,000-80,000 of consistent annual profit.

Common mistakes at each stage

• Forming an LLC for a business with no revenue yet. You can form later in a week; the $500 and annual fees buy nothing while you are still validating the idea.
• Forming the LLC but continuing to run everything through personal accounts. Commingling funds is the number one way courts pierce the corporate veil and erase your liability protection.
• Electing S-Corp status in a year when profit dips. The payroll and filing costs are fixed; the savings scale with profit. An election that made sense at $120k can cost you money at $50k.
• Setting an indefensibly low S-Corp salary. A $15,000 salary against $150,000 of distributions is exactly the pattern IRS audit filters look for.
• Assuming an LLC changes your taxes. A default single-member LLC is taxed identically to a sole proprietorship — the LLC is a legal shield, not a tax strategy.

The bottom line

Structure follows profit, not the other way around. Start as a sole proprietor while you validate the business, form an LLC in your home state once there is real revenue or real liability exposure, and run the S-Corp math with an accountant once profit clears roughly $70,000-80,000 a year with some consistency. The entire ladder costs a few hundred dollars and a few afternoons to climb, and each rung is reversible. What actually protects and enriches you is not the paperwork itself but the habits underneath it: separated finances, clean books, adequate insurance, and a salary the IRS would nod at. Get those right and the entity choice becomes what it should be — a math problem with a clear answer, revisited once a year.

One more nuance worth flagging: liability protection from an LLC does not cover your own professional mistakes. If you personally botch the work, you can be sued personally regardless of entity — that is what errors and omissions insurance is for. The LLC shield matters most for contracts, debts, employees, and accidents connected to the business. Plenty of freelancers overweight the entity decision and underweight the insurance one, when the honest ranking for most service businesses is insurance first, entity second, S-Corp election a distant third until the income justifies it.