Is an S Corp Worth It? An Honest Breakeven Analysis

Most pages answering this question are published by companies that sell S-corporation formation, and they all answer yes. This one is written to talk you out of it where the numbers do not hold — which is more often than the internet suggests.

The election is a genuine, repeatable saving for one specific shape of business: a profitable owner-operated company where your own work generates the income and the profit is stable enough to plan around. Outside that shape it ranges from marginally positive to an outright loss. The difference is arithmetic, so start there.

What the election actually changes

As a sole proprietor or default-taxed LLC you pay self-employment tax of 15.3% — 12.4% Social Security up to the wage base, plus 2.9% Medicare with no ceiling — on 92.35% of your net profit. As an S corporation you split that profit into a W-2 salary, which carries the same 15.3% split between you and the company, and distributions, which carry none. The saving is 15.3% of whatever you move out of the salary column.

That is the whole mechanism, and it is where most articles stop. Two things run in the opposite direction, and together they usually consume half the headline figure.

The Section 199A clawback

The qualified business income deduction is permanent at 20% — the One Big Beautiful Bill Act repealed the sunset that had been scheduled after 2025, so any source telling you it expired is stale. But the salary you pay yourself is not qualified business income. Every dollar of W-2 wages reduces your QBI dollar for dollar, and so reduces the deduction by 20 cents. In a 22% bracket that is 4.4 cents of extra income tax for every dollar of salary, set against the 15.3 cents you save on every dollar moved the other way. The more defensible your salary, the more of the saving goes back.

The payroll tax saving in that example is $7,382. The extra income tax from the shrunken deduction and the higher adjusted gross income is $3,838. Compliance takes another $1,420. A $150,000 business — comfortably above every threshold the internet quotes — nets about $2,100.

Drop the salary from $90,000 to $60,000 and the same business nets roughly $7,700 instead. That $5,600 swing is not a planning technique; it is the entire economics of the election riding on one number that nobody has audited yet.

Above the QBI threshold, the sign flips

Once taxable income clears the phase-in range — $403,500 to $553,500 for a joint return, $201,750 to $276,750 for most others — the §199A wage limitation takes over, and it inverts the logic completely. Above the top of the range your deduction is capped at 50% of the W-2 wages the business paid. A sole proprietor pays no W-2 wages at all, so with no qualifying property their deduction is squeezed to zero. An S corporation paying a salary keeps up to half of it.

Take a single filer with $400,000 of profit from a non-service business. As a sole proprietor the deduction is nil. As an S corporation paying a $100,000 salary the cap is $50,000, and that is the deduction. Cut the salary to $60,000 to shave payroll tax and the cap falls to $30,000: you save $6,120 of FICA and lose $20,000 of deduction, which at a 35% marginal rate costs $7,000. You have paid $880 for the privilege of underpaying yourself.

The problem nobody mentions: your other job

If you have a W-2 job alongside the business, your day-job wages fill the Social Security wage base first. At or above $184,500 of outside wages, the 12.4% component on your side business is already exhausted. Self-employment tax on that profit is 2.9% Medicare, plus the 0.9% Additional Medicare Tax over $200,000 single or $250,000 joint — roughly 3.8%, not 15.3%.

On $60,000 of side profit that is about $2,100 of payroll tax in total. An S corporation cannot remove most of it, because Medicare still applies to the salary. Paying yourself $40,000 and distributing $20,000 saves around $760 — less than the payroll service costs. If your day job pays $120,000 you have $64,500 of wage-base headroom left, and only that slice carries the 12.4% that makes the election worth making.

What it costs to run, honestly

The election is not a filing, it is an operating commitment. From the effective date you are an employer.

• Payroll service, typically $480 to $1,200 a year for one or two employees, and it must run every period whether or not the money is there.
• Form 1120-S, a separate return with a balance sheet, basis tracking and a Schedule K-1. The incremental preparation cost over a Schedule C runs $400 to $1,500.
• Forms 941 quarterly and 940 annually, plus a W-2 and W-3 by January 31, plus state withholding and unemployment returns on their own schedules.
• State employer registration — withholding and unemployment accounts, and in most states either workers' compensation cover or a formal officer exclusion filing.
• FUTA at 0.6% after the state credit on the first $7,000 of wages, or $42 a year. Trivial in money, one more filing in practice.

Call it $900 to $2,700 a year in cash before your own time. Below roughly $50,000 of net profit that is nearly always more than the tax saved, and between $50,000 and $80,000 it is genuinely marginal — which is the range where the answer depends on your state, your salary and whether you have outside wages.

The costs that are not tax

A thinner Social Security record

Benefits are computed from your highest 35 years of indexed earnings. Reporting $60,000 of wages instead of $150,000 of self-employment income for a decade lowers that average permanently, and it lowers your disability and survivor coverage in the meantime. The benefit formula is progressive, so the loss is largest for owners whose salaries sit well below the wage base — precisely the people an aggressive salary strategy targets.

Less room in the retirement plan

Solo 401(k) and SEP employer contributions in an S corporation are capped at 25% of your W-2 wages. A sole proprietor computes the same limit on net earnings after the self-employment tax deduction, which works out near 20% of profit. On $150,000 of profit the sole proprietor's employer contribution ceiling is around $25,600; with a $60,000 S-corp salary it is $15,000. That is roughly $10,600 a year of tax-deferred capacity given up to save payroll tax on the same dollars.

The five-year door

This is not a one-year experiment. Once you revoke the election or the corporation is terminated from S status, IRC §1362(g) bars a new election for five tax years without IRS consent. Decide as though you are committing for at least that long.

Your state can settle the question on its own

State treatment changes the answer more than most owners expect, and in a handful of places it reverses it. California charges a 1.5% S-corporation franchise tax with an $800 annual minimum that is owed in loss years. Tennessee does not recognize S status for franchise and excise tax at all. New York requires a separate election on Form CT-6 that must be approved — filing Form 2553 alone does not create a New York S corporation, and that omission is the most expensive S-corp mistake in the country. Check the S-corp rules in your state before you decide.

When not to do this, at least not yet

1. 1Net profit below about $50,000. The compliance cost eats the saving. Revisit it next year.
2. 2A first good year that you cannot yet repeat. The election runs until revoked, and revoking starts a five-year clock. Wait for the second year.
3. 3Outside W-2 wages at or above the Social Security wage base. Most of the saving you are counting on does not exist.
4. 4Rental real estate. Rents are generally not subject to self-employment tax in the first place, so there is nothing to save — and holding appreciated property in an S corporation creates distribution problems that are painful to unwind.
5. 5No appetite for payroll. An election you do not operate is worse than no election: you have an S corporation with no reasonable compensation, which is the fact pattern the IRS looks for.
6. 6An ineligible ownership structure. A nonresident alien shareholder, an LLC or partnership as a member, or an operating agreement with a preferred return or distribution waterfall will each defeat the election. The instructions guide sets out every eligibility test.

When it clearly does pay

• Stable net profit above roughly $80,000, from work you personally perform.
• A salary you can defend that still leaves a real distribution — not one manufactured to make the spreadsheet work.
• No large outside W-2 wages consuming the wage base.
• A state that recognizes the election without an extra tax or an extra approval step.
• Taxable income above the §199A phase-in top in a non-service business, where the wage limitation now works in your favor rather than against you.

If you are weighing the entity itself rather than the tax election, LLC vs S corp is the better starting point — an S corporation is a tax status, not a legal structure, and you do not have to change entities to elect one.

You are not against the clock

The calendar-year 2026 deadline passed on Monday March 16, 2026. For an existing calendar-year business the next available effective date is January 1, 2027, and the last day to elect it is Monday March 15, 2027. That window is open now, which means you have more than seven months to model this properly rather than deciding under pressure. Filing early costs nothing and locks the date — how to file Form 2553 walks through the procedure end to end.

If you have already concluded it was worth it for 2026 and simply missed the date, the election is not lost — see the deadline guide for how the count works and what happens to a late filing.