S Corp or LLC in Ohio: The Questions That Come Before the Math

Say you run a small construction company in Columbus. You have been a single-member LLC since day one. Business is growing. You just hired your third employee. Your tax preparer mentions in passing that you might want to look at an S corporation election. Then your bookkeeper says it is a pain, and a fellow owner at the Builders Exchange says it saved him thousands.

Three opinions, one decision, and no clear way to think it through.

That moment is exactly where this post starts. Not with a calculator, and not with a definitive "do this" answer. With the questions that come before the math: the ones that tell you whether an S corporation election even belongs on your list in the first place.

An S corporation is a tax election, not a type of company

This is the single most important thing to get straight before anything else. An S corporation is a tax election you make with the IRS. It is not a different legal entity.

Your business is still an LLC under Ohio law. You still file with the Ohio Secretary of State the same way. Your operating agreement still governs who owns what and who decides what. The only thing that changes is how the IRS taxes your profit.

That distinction matters because it means you can try the math, and you can undo it if the math stops working. But it also means the election does not reset anything. Changing your tax status does not restart depreciation on equipment you already own. Your basis in the company does not change. The assets are the same assets.

Think of it as choosing a different lens, not a different building.

The real question is about self-employment tax

The push to elect S corporation status almost always starts with one number: the self-employment tax.

A single-member LLC owner pays self-employment tax on every dollar of profit. That is 15.3 percent: the employer and employee halves of Social Security and Medicare combined. On $100,000 of profit, that is $15,300 before income tax even enters the picture.

An S corporation owner splits the profit into two pieces. The first piece is a reasonable salary for the work they do. That salary is subject to payroll taxes (Social Security and Medicare) just like an employee's paycheck. The second piece is a distribution of the remaining profit. Distributions are subject to income tax but not to payroll taxes.

That split is where the savings live. But it is also where the trouble starts, because the IRS cares deeply about that word "reasonable."

Reasonable salary: the question the IRS actually asks

The IRS rule is not a formula. It is one word: reasonable. Reasonable salary means what you would pay someone else to do the work you do for the business.

For a landscaping company owner who runs crews all day, that number might be $55,000. For an architect who designs, manages projects and brings in clients, it might be $110,000. The point is not to guess the lowest number you can get away with. The point is to pick a number you can support with real data: what similar roles pay in Central Ohio, what your time is actually worth, and what the business could afford to pay a replacement.

Pay too little salary, and the IRS can reclassify distributions as wages. That means back payroll taxes, penalties and interest. It is the main risk the IRS looks at, and it is the reason an S corporation election is not a set-it-and-forget-it choice.

Ohio adds its own layer

An S corporation is a federal election. Ohio respects it automatically for state income tax, but Ohio also has its own rules that change the answer.

Ohio's business income deduction lets owners deduct up to $250,000 of business income ($125,000 married filing separately) on their Ohio return. Business income above that is taxed at a flat 3 percent. What counts as business income follows Ohio's own rules, not the federal ones, so an owner needs to check whether their S corporation distributions qualify for the deduction the same way LLC profit would.

Columbus adds another layer. The city levies a 2.5 percent municipal income tax. Employers withhold it on wages earned in Columbus, and Columbus residents who pay tax to another city get a credit for that tax up to 2.5 percent. An S corporation salary paid to a Columbus resident triggers withholding that a pure LLC profit distribution would not.

These are not reasons to avoid an S corporation. They are reasons to run the numbers with someone who knows Ohio and Columbus, not just the federal rules.

Columbus City Income Tax for Business Owners: What It Covers and Who Files covers s corporation election in more detail.

The timing question most owners ask too late

A new S corporation election for a calendar-year business is generally due by March 15 of the tax year it is meant to cover: two months and 15 days after the year starts. Late-election relief exists, but it has conditions, and it is never something to count on.

That means an owner thinking about this in September should be asking: is this for 2026, with late-election relief if we qualify, or for 2027 with a clean election on time? There is no answer without looking at the specific facts. But there is a real cost to deciding in December that you wish you had acted in January.

This is also where the standard deduction conversation often comes up, and it is worth clearing up: the standard deduction is a personal deduction on your individual return. Business expenses, equipment deductions and retirement contributions matter whether or not you itemize. An S corporation election sits on the business side of that line. Do not let one confuse the other.

When the answer is actually "not yet"

Some owners should not elect S corporation status. Not because it is a bad strategy, but because it is the wrong moment.

If the business profit is still modest, the payroll tax savings might be smaller than the added cost of running payroll, filing a separate S corporation return (Form 1120-S), and keeping the books clean enough to defend a salary. If the owner is still building revenue and every dollar goes back into the business, the distribution piece might be small enough that the savings do not justify the complexity.

The same is true in reverse. There is a point where the math flips, the savings become real, and waiting costs money. That point is different for every owner. It depends on profit, salary, how many hours the owner works, what the business pays for health insurance and retirement, and what the owner's overall tax strategy looks like across federal, state and city returns.

The number that tells you where you sit on that curve is not the answer to "S corp or LLC?" It is the answer to "what do my own numbers actually say?"

One page that answers the question for your business

The S corporation question is exactly the kind of decision where general advice falls apart. The rules are the same for everyone. What changes the answer is you: your profit, your salary, your city, your retirement plan, your growth plans for the next two years.

The Mantle Blueprint™ is where owners get that answer for their own situation. It is a flat-fee, one-time wealth-building strategy package with four deliverables you keep: a one-page diagram of your entire financial world, your tax savings opportunities, an analysis of each, and a one-hour consult with Hava Laudon, an Enrolled Agent, to walk through it. To prepare, you send prior returns, entity documents and a short questionnaire.

No calculator does what that one page does. Because the real question is not "S corp or LLC?" It is "what does my setup look like when someone reads all of it at once?"

Start the conversation. Fifteen minutes, nothing to prepare. Hava listens, asks three or four questions, and says which of the three engagements fits, or that none does.

FAQ

What is the difference between an LLC and an S corporation?

An LLC is a legal entity created under state law. An S corporation is a federal tax election that changes how the IRS taxes the business profit. An LLC can elect S corporation status and remain an LLC under Ohio law.

How much can an S corporation save on self-employment tax?

The savings depend on profit, a reasonable salary, and how much profit remains as distributions. Distributions avoid the 15.3 percent self-employment tax, but the salary piece still faces payroll taxes, and both pieces are subject to income tax.

Does Ohio tax S corporations differently than LLCs?

Ohio generally follows the federal S corporation election. However, Ohio's business income deduction, which lets owners deduct up to $250,000 of business income, has its own rules for what qualifies, and an owner should verify their S corporation distributions qualify.

What is a reasonable salary for an S corporation owner?

A reasonable salary is what you would pay someone else to do the work you do for the business. There is no fixed formula, but the number should be supported by market data for similar roles in your area and the actual value of your work.

Can I elect S corporation status for my Ohio LLC mid-year?

A new S corporation election for a calendar-year business is generally due by March 15 of that year. Late-election relief exists but has conditions. An owner considering a mid-year switch should review the timing rules with a tax professional.