LLC vs S-corp is a category error, and the real answer is simpler

Ask the internet whether you should be an LLC or an S-corp and you will get ten thousand articles comparing them side by side, as if choosing between two vehicles.

The question is a category error. An LLC is a container: a legal box, created by your state, that holds the business and puts a wall between it and you. An S-corp is a tax label: a set of rules, applied by the IRS, that decides how the box’s money gets taxed. Containers come from the state. Labels come from the IRS. And the fact that unties the whole knot: an LLC can wear the S-corp label. Most S-corps you have ever heard of are LLCs that filed one form.

So the real decision is two separate dials, chosen separately. Which container. Which label. This page turns both, in order.

The containers

Four to know, and the comparison is short because one of them won.

A sole proprietorship is no container at all: you and the business are the same person, every business debt is your debt, and the only thing it costs is everything, eventually. A general partnership is the same but worse, because your partner’s business mistakes are also personally yours, automatically, no signature required. Nobody should choose either on purpose; they are what you have by default while deciding.

A corporation is a real container with a real wall, and it comes with mandatory internal machinery: directors, officers, required meetings, stock mechanics. It also accepts only two tax labels, S or C.

An LLC is a real container with the same wall, almost none of the mandatory machinery, and it accepts every label on the menu. That flexibility is the entire reason the LLC conquered American small business, and it is why the container decision is nearly automatic: unless investors or a licensing board force a corporation on you, the container is an LLC. What the wall does and does not protect is the whole subject of the state-law spine, starting with the foundation page.

The labels

An LLC wears one of four tax labels, and two of them arrive automatically.

Disregarded is the default for one owner: the IRS pretends the box is not there, and the business reports on your personal return. Partnership is the default for multiple owners: the box files an informational return and the profits flow to the owners’ returns. Both are pass-through: no tax at the company level, everything taxed once, to you, whether distributed or not, which is the phantom-income fact the distributions page covers.

The S-corp label is also pass-through, with one enormous difference explained in the next section. The C-corp label is the only one where the box itself pays tax, currently a flat 21 percent, and then you pay again personally when profits come out as dividends. Taxed twice, which makes it the wrong default for a small business and exactly right for one specific situation covered below.

The S-corp question, asked properly

Strip away the mythology and the S-corp election is about one tax.

Self-employment tax runs 15.3 percent: 12.4 percent for Social Security plus 2.9 percent for Medicare. Under the default labels, it applies to essentially every dollar of your business profit, with the Social Security piece capping out at the 2026 wage base of $184,500 and the Medicare piece never capping at all. On $150,000 of profit, that is roughly $21,000 before income tax even starts.

The S-corp label splits your profit into two streams. You pay yourself a salary, which is taxed like any paycheck, payroll tax included. Everything above the salary flows to you as a distribution, and distributions carry no self-employment tax. That sentence is the entire strategy. Same business, same container, same total profit; the label reroutes part of the money through a door the 15.3 percent does not cover.

Worked plainly: $150,000 of profit, and suppose $70,000 is a defensible salary for the work you do. The remaining $80,000 escapes the 15.3 percent, saving about $12,200 a year. Against that, subtract what the label costs: payroll service, a separate corporate tax return, and the bookkeeping discipline, commonly $3,500 to $5,000 a year all in. The election clears several thousand dollars in this example, every year, legally, and this is why your accountant keeps bringing it up.

Three catches keep it from being free money.

The salary must be reasonable, meaning what you would pay a stranger to do your job, supported by market data. The 60/40 rule floating around the internet has no IRS basis. Pay yourself $15,000 while distributing $135,000 and the IRS reclassifies the distributions as wages, with back taxes and penalties, and this is among its favorite small-business audits.

The salary decision now fights with another deduction. The 20 percent qualified business income deduction, made permanent in 2025, applies to your pass-through profit but not to your own W-2 salary. A higher salary saves nothing extra and shrinks the deduction; a lower salary risks the audit. There is a genuine optimization in the middle, it moves with your income, and it is the main reason the election deserves an accountant rather than a YouTube video.

And the timing is rigid: for an existing company the election form is due March 15 to count for that year, and a new company gets 75 days from formation. Miss it and you generally wait a year. California owners add one more line to the math: the state charges S-corps 1.5 percent of income, minimum $800, which thins the winnings.

The practical threshold: the election starts paying for itself somewhere around $60,000 to $80,000 of steady profit above a defensible salary, and below that zone the compliance costs eat the savings. Not a magic number, a math problem, and one worth redoing each year as the business grows.

Where the S-corp label is a mistake

The biggest one first, because it costs the most and gets made the most. Appreciating real estate never goes inside an S-corp, or a C-corp. The reasons compound: getting an appreciated property out of a corporation is a taxable event, as if you sold it to yourself, which slams shut the refinancing, restructuring, and estate planning doors that stay open in a default-label LLC, and the damage grows with every year of appreciation. Rentals live in LLCs wearing the default labels. Anyone who put your rental in an S-corp because of the self-employment tax pitch solved a problem you did not have, since rental income generally is not subject to self-employment tax in the first place.

Beyond real estate: businesses below the profit threshold, where the label is pure cost. Businesses about to chase the startup stock exemption below, which requires the C label. And any owner unwilling to run real payroll on a real schedule, because a sloppy S-corp is an audit with a filing fee.

The C-corp case, upgraded in 2025

For most readers the C label means taxed twice and stop reading. One group should keep reading: founders building a company to sell.

Section 1202 lets sellers of qualified small business stock exclude gain from tax entirely, and it applies only to C-corp stock. The 2025 tax law made it dramatically better for stock issued after July 4, 2025: full exclusion after five years as before, but now 75 percent after four years and 50 percent after three, a per-person cap raised to $15,000,000, and a company asset ceiling raised to $75,000,000. A founder who builds and sells for $15,000,000 after five years can keep all of it, federally untaxed. That is the single largest legal tax benefit in the code for an operating business, and it is why venture-backed startups are Delaware C-corps on day one.

The fine print that matters for this site’s readers: the exemption excludes service businesses by name, health, law, consulting, financial services, and hospitality among them, so the professionals and practice owners this site serves mostly cannot use it. It rewards people building sellable product companies. If that is you, the C-corp conversation belongs at the very beginning, because the clock and the qualification both start at issuance, and value built inside a pass-through before converting can poison the benefit.

The answer most people came for

The container is an LLC, in your home state, almost always. Then the label, by situation. A side business or a service business under roughly $80,000 of profit: keep the default label and spend the accounting fees on insurance instead. A profitable service business well above a defensible salary: the S election, done with an accountant, revisited annually against the QBI math. Rentals and anything that appreciates: default labels, permanently, and fire anyone who says otherwise. A product startup built to raise money and sell: Delaware C-corp from day one, with the 2025 rules making that path richer than it has ever been. A licensed professional: your state’s board picks your container before you do, and the entity variants page covers that maze, including the California problem.

And the reassurance that removes most of the day-one paralysis: the dials move independently, and the label can change later without touching the container. The LLC you form this month can elect S when the profit justifies it and can even convert for a C-corp future, though that last move has the timing traps above. The container decision is for keeps; the label decision is just this year’s math. Make the container simple, do the label math annually, and the most-asked question in this field turns out to have had a boring answer all along, which is the best kind.