The S Corp Election

If you own a small business, you have probably heard someone — a friend, an accountant, a guy at a networking breakfast — tell you to "set up an S corp." It is one of the most common pieces of tax advice given to entrepreneurs, and also one of the most commonly misunderstood. Half the people repeating it do not actually know what an S corporation is.

So let's clear it up. Here is what an S corp election really is, why owners make it, how the mechanics work, and where it goes wrong.

An "S Corp" Is Not a Type of Business

The single most important thing to understand is this: an S corporation is not an entity type. It is a federal tax election.

When you form a business at the state level, you choose an entity: usually a limited liability company (LLC) or a corporation. That choice governs your liability protection, your governance, and your relationship with the state. It does not, by itself, dictate how the IRS taxes you.

"S corporation" refers to Subchapter S of the Internal Revenue Code (IRC §§ 1361–1379). It is a tax classification that an eligible entity elects by filing Form 2553 with the IRS. The entity underneath can be either:

• A state-law corporation that elects to be taxed under Subchapter S instead of the default Subchapter C, or
• A limited liability company that elects to be taxed as a corporation and then elects S status (or makes the S election directly).

This is why "should I be an LLC or an S corp?" is the wrong question. The real question is: "Given my entity, how do I want to be taxed?" An LLC taxed as an S corp is extremely common — you keep the operational flexibility of the LLC while changing only the tax treatment.

The Default Rules It Replaces

To understand why anyone bothers, you have to know what the S election replaces.

By default, a single-member LLC is a "disregarded entity" — its income lands on the owner's personal return (Schedule C), and all of the net profit is subject to self-employment tax. A multi-member LLC is taxed as a partnership, with similar self-employment exposure for active members. A corporation that does nothing is taxed under Subchapter C, meaning the company pays a 21% corporate tax and then shareholders pay again on dividends — the classic double taxation.

Self-employment tax is the part that stings. It is the self-employed person's version of FICA: 15.3% total — 12.4% for Social Security and 2.9% for Medicare. The Social Security portion applies only up to the annual wage base, which is $184,500 for 2026. The Medicare portion has no cap, and an additional 0.9% Medicare tax applies to higher earners. On a business netting $150,000, a sole proprietor is paying roughly $21,000 in self-employment tax before income tax even enters the picture.

The S corp election is, at its core, a tool for legally reducing that number.

Why Owners Elect: The Salary-and-Distribution Split

Here is the mechanism that drives almost every S corp election for a profitable small business.

An S corporation is a pass-through entity, so business profit is not taxed at the corporate level (no double taxation). Instead, profit flows to the owner's personal return. But the way an owner-employee takes money out of an S corp matters enormously:

• Wages. The owner who works in the business must be paid a salary as a W-2 employee. That salary is subject to FICA (the same 15.3%, split between the company and the employee).
• Distributions. Profit left over after the salary can be distributed to the owner as a shareholder distribution. Distributions are not subject to FICA or self-employment tax.

That second point is the whole game. In a sole proprietorship, 100% of net profit is hit with self-employment tax. In an S corp, only the salary portion is subject to employment tax; the distribution portion is not.

A simplified illustration: a business nets $150,000. As a sole proprietor, essentially the full amount is exposed to the 15.3% self-employment tax. As an S corp, the owner pays herself a reasonable salary of, say, $80,000 (subject to FICA) and takes the remaining $70,000 as a distribution (not subject to FICA). The employment tax savings on that $70,000 spread runs to roughly $10,000 a year. That recurring savings is why the structure is so popular.

The Catch: "Reasonable Compensation"

This is where I spend a lot of my time as a lawyer, and where owners get themselves in trouble.

The owner cannot simply pay herself a $10,000 salary and take $140,000 in distributions to dodge employment tax. The IRS requires that an owner-employee receive reasonable compensation for the services actually performed before taking distributions. This is a long-settled requirement, repeatedly enforced in the courts (the line of cases running through David E. Watson, P.C. v. United States is the standard reference), and recharacterization of distributions as wages is one of the most common S corp audit adjustments.

"Reasonable" means what you would have to pay an unrelated person to do the same work — judged by factors like training and experience, duties and time devoted, comparable pay for similar positions, and the like. There is no magic percentage, despite what you may read online. An aggressively low salary paired with large distributions is a red flag, and if the IRS recharacterizes the distributions as wages, the owner owes back employment taxes plus penalties and interest. The savings only hold up if the salary is genuinely defensible.

In short: the S corp does not eliminate employment tax on your labor. It eliminates it on the return on your business beyond your labor. Owners who forget that distinction are the ones who end up in examination.

The QBI Wrinkle (Now Permanent)

You cannot evaluate an S corp election in 2026 without considering the Qualified Business Income deduction under IRC § 199A.

Section 199A lets eligible pass-through owners deduct up to 20% of their qualified business income. Originally enacted in the 2017 Tax Cuts and Jobs Act with a sunset at the end of 2025, it was made permanent by the One Big Beautiful Bill Act signed in July 2025, with widened phase-in ranges and a new $400 minimum deduction beginning in 2026. That permanence removes the planning uncertainty that hung over entity decisions for years.

The wrinkle is that QBI and the salary split pull in opposite directions. W-2 wages paid to the owner are not qualified business income, so every dollar you move from distribution to salary shrinks the QBI base. At the same time, for higher-income owners, the 199A deduction is limited by reference to the W-2 wages the business pays — so paying too little in wages can cap the deduction. The optimal salary is therefore a balance between minimizing employment tax and maximizing the QBI deduction, and it depends on the owner's total taxable income and whether the business is a "specified service trade or business." This is genuinely a run-the-numbers exercise, not a rule of thumb.

How You Actually Make the Election

The election is made on IRS Form 2553, signed by all shareholders. Timing matters:

• To be effective for the current tax year, the form generally must be filed within two months and 15 days after the beginning of that tax year (so, by March 15 for a calendar-year business).
• File later than that and the election typically takes effect the following year — unless you qualify for late election relief under Rev. Proc. 2013-30, which the IRS grants fairly routinely where there was reasonable cause and the entity otherwise qualified. Late relief is common but should not be the plan.

If the underlying entity is an LLC, you may also need Form 8832 to elect corporate treatment, though Form 2553 can handle both in many cases.

Eligibility Requirements (Don't Skip These)

Subchapter S is restrictive. To qualify and stay qualified, the entity must satisfy all of the following:

• Be a domestic entity (formed in the U.S.).
• Have no more than 100 shareholders (family members can be counted as one).
• Have only eligible shareholders — individuals, certain trusts, and estates. Nonresident aliens, partnerships, and corporations cannot be shareholders. This is the requirement that most often disqualifies a business, particularly one with an investor entity or a foreign owner.
• Have only one class of stock. Differences in voting rights are fine, but differences in distribution or liquidation rights are not. This is a frequent trap for businesses that want preferred-style economics for investors.

Blow one of these — admit an ineligible shareholder, create a second economic class of stock — and the S election can terminate, sometimes inadvertently and with messy consequences. For any business contemplating outside investment, the one-class-of-stock and eligible-shareholder rules often make an S corp the wrong long-term vehicle.

The Costs and Downsides

The election is not free, and it is not right for everyone.

• Payroll and compliance burden. You must run real payroll, file payroll tax returns, and file a separate corporate return (Form 1120-S) with K-1s to shareholders. That means a payroll service and, realistically, a CPA. For a business netting only $30,000–$40,000, the administrative cost can swamp the tax savings.
• State treatment varies. Not every state honors the federal S election cleanly. Some impose entity-level taxes or fees on S corps (California's 1.5% franchise tax is the classic example), and a few do not recognize the election at all. The savings analysis has to be run at the state level, not just the federal level.
• Fringe benefit limits. A more-than-2% shareholder is treated unfavorably for several fringe benefits — for instance, health insurance premiums must be added to the owner's W-2 wages (though they generally remain deductible).
• Basis and distribution rules. Distributions in excess of stock basis are taxable, and S corp basis rules differ from partnership rules in ways that can surprise owners — particularly the treatment of entity debt.
• Less flexibility than a partnership. Partnerships can make special allocations and distribute appreciated property far more freely. S corps cannot. A business that wants flexible economics among owners may be better off taxed as a partnership.

When It Makes Sense — and When It Doesn't

As a practical matter, the S corp election tends to pay off when a business is:

• Generating consistent net profit comfortably above what the owner would pay as a reasonable salary — that excess is what gets the employment-tax break. A commonly cited (rough) threshold is net profit of around $60,000–$80,000 and up, but the real answer depends on the numbers.
• Operated by active owners who draw a living from the business (rather than passive investors).
• Not planning to raise venture-style equity or bring on ineligible shareholders.

It tends not to make sense for businesses with thin or unpredictable profit, businesses that need flexible ownership economics, or businesses headed toward outside investment.

The Bottom Line

An S corp election is a tax classification, not a business entity — a way to be taxed under Subchapter S that an eligible LLC or corporation chooses by filing Form 2553. For a profitable small business, its main draw is real: it can cut self-employment and payroll tax by separating a reasonable salary from tax-free distributions, while preserving pass-through treatment and the now-permanent QBI deduction. But the benefit is bounded by the reasonable-compensation requirement, eroded by compliance costs and state-level taxes, and unavailable to businesses that violate Subchapter S's strict eligibility rules.

The election is a planning decision that should be modeled with actual numbers and reviewed against your growth plans — not made because someone at a breakfast told you to.

Important Notice

This article is for general informational purposes and is not legal or tax advice. The right structure depends on your specific facts, your state, and your goals. Consult a qualified attorney and tax professional before making an entity or tax-election decision.