S Corp or LLC for Your Agency? Your Salary Is the Real Decision, and It Moves Four Numbers at Once

By Craig S. Cody, CPA, Certified Tax Coach.

Here's the answer up front. For a marketing or PR agency whose owner is clearing a solid six figures, the S corporation election is usually right. But the election isn't the decision. The salary is.

Every piece of advice you'll find on this treats your S corp salary as a payroll tax question. Pay yourself the lowest number you can defend, take the rest as a distribution, save the Medicare tax. That's one of the four numbers your salary moves, and it's the smallest one. The other three are the 20% qualified business income deduction, your health insurance deduction, and how much your retirement plan is allowed to hold for you. Set the salary for payroll tax alone and you can lose more on the other three than you saved.

My firm works with more than 70 marketing and advertising agency owners every month, and I've spent 23 years reading agency returns. Here's how I think about this decision.

This article does two things. It settles the LLC-versus-S-corp question in the way an agency owner actually needs it settled, which is faster than you'd think. Then it spends most of its time on the salary, because that's where the money is.

Is an LLC or an S Corp Better for a Marketing Agency?

That's the wrong question, and the fact that it's the question everyone asks is why so many agencies get this wrong.

An LLC is a liability wrapper. It's a creature of state law that keeps the agency's debts away from your house. It isn't a tax entity at all. A single-member LLC is taxed as a sole proprietorship unless it elects otherwise. A multi-member LLC is taxed as a partnership unless it elects otherwise.

An S corporation is a tax status. It's a box you check with the IRS on Form 2553 that says: pass the income through to me, but let me split it into wages and distributions.

So the real question has two parts. Do you want the wrapper? Almost always yes. Do you want the tax status? That depends on your profit, and you can put the tax status on the wrapper without changing anything else about the company. An LLC taxed as an S corporation is the most common structure I see in agencies, and it's the right one for most of them.

The number that decides the tax status is owner profit. Once owner profit is solidly between $250,000 and $350,000, the S corporation election is usually worth making. Below that, the payroll tax saving is small, and the cost of running payroll, filing a separate return and getting the salary right can eat it.

What Changes for Agency Partners Specifically?

If you have a partner, the choice between a partnership and an S corporation is where agencies trip.

In a partnership, every dollar of a working partner's share is subject to self-employment tax. Guaranteed payments, distributive share, all of it. There's no wages-versus-distributions split to work with. What a partnership does give you is flexibility: partners can be allocated different shares of profit, and guaranteed payments can pay one partner more for doing more.

An S corporation is the reverse. It can have only one class of stock, so distributions have to go out in proportion to ownership. Two 50/50 partners get 50/50 distributions, period. What it gives you instead is the wage split, and here's the part most owners miss: salaries don't have to match. The regulations say plainly that differences in compensation for services don't create a second class of stock.

So the agency where one founder runs new business and the other runs delivery, and one of them is working sixty hours to the other's thirty, has a clean answer inside the S corporation. Pay the sixty-hour partner the higher salary, because that's what the work is worth, and split the distributions by ownership as the law requires. That's not a workaround. That's the structure doing exactly what it was designed to do.

When Do You Have to Decide?

Early in the year, or you lose the year.

Form 2553 has to be filed by the fifteenth day of the third month of the tax year for the election to take effect that year. For a calendar-year agency, that's March 15. Miss it and the election takes effect the following January, unless you qualify for late-election relief, which the IRS grants under a revenue procedure if you can show you always intended to elect and act within about three years.

You can't split a year. There's no such thing as a proprietorship for the first half and an S corporation for the second. Which means the "should we be an S corp" conversation belongs in January and February, not in the meeting where your accountant is finishing last year's return. I cover that timing problem across every decision in my tax planning guide for marketing and PR agency owners; this one has the hardest deadline of the lot.

Two state-level land mines before you file anything. New York City does not recognize the S election. It never adopted it, so an S corporation doing business in the five boroughs still pays the City's general corporation tax at 8.85% on its allocated income, and then the shareholders pay City personal income tax on the same dollars. The federal saving is real; the City saving isn't there. California charges S corporations a 1.5% franchise tax on net income with an $800 minimum. Neither kills the election. Both change the math, and an agency with a Manhattan office needs that math run before the form goes in. In addition, Tennessee and New Hampshire have their own rules that need a close look before you make this decision.

What Is a Reasonable Salary for an S Corp Owner?

A salary the IRS would agree a stranger would have to be paid to do your job.

That's the standard, and it comes from a regulation that was written about deductible compensation long before S corporations existed. Section 1.162-7(b) allows a deduction for a reasonable allowance for salaries, and defines reasonable as the amount that would ordinarily be paid for like services by like enterprises under like circumstances. The IRS has used that standard since the 1970s to recharacterize S corporation distributions as wages when the salary was too low, and the courts have backed it every time it mattered.

The case everyone in my profession knows is Watson. David Watson was a CPA with a stake in an accounting firm. His S corporation paid him $24,000 a year in salary in 2002 and 2003, and distributed roughly $200,000 and $175,000 on top. The government's expert put the market value of his services at $91,044 a year. The court agreed, recharacterized $67,044 a year as wages, and the Eighth Circuit affirmed. The court's reasoning is the part to remember: what counts is the economic reality of the work, not the label on the check. Qualifications, duties, hours, and what comparable humans earn in comparable firms.

Notice what the court did not do. It didn't say salary has to equal profit. It didn't say distributions are illegitimate. Watson kept well over $100,000 a year in distributions after the adjustment. The problem was never that he took distributions. The problem was that $24,000 was a number nobody could look at with a straight face.

How Do You Actually Set the Number?

You build a file, not a feeling. Four inputs.

1. Your role, written down. What you actually do. In most agencies the owner is running new business, holding the top client relationships, and making the final call on people and money. That's a general manager and a head of sales in one chair.
2. Your hours. Sixty hours is not thirty, and a salary that would be reasonable for a part-time owner is not reasonable for the person who is the agency.
3. What you'd pay a replacement. Comparable compensation for a general manager of an agency your size, in your market. Salary surveys exist for this. So does the number you'd have to offer to hire your own replacement, which you probably already know.
4. What the agency can bear. A salary the business can't actually pay is evidence of its own, in either direction. This is the least defensible position of the four.

Write the answer down, date it, and put the support in the file. Then revisit it every year, because the number that was defensible when the agency did $800,000 is not defensible when it does $3 million.

Set it too high and you hand over payroll tax you never owed. Set it too low and you've built an exposure into every return going forward, and the IRS has a published win to point at.

The Four Numbers One Salary Moves

Here's the spine of this article, and the part I wish every agency owner understood before the first payroll ran.

Your S corp salary isn't one decision. It's four, made with one number.

1. Payroll tax. Wages carry Social Security tax at 12.4% up to the 2026 wage base of $184,500, and Medicare tax at 2.9% with no ceiling, plus an additional 0.9% once your wages pass $200,000 as a single filer or $250,000 filing jointly. Distributions carry none of it. This is the number everyone optimizes.

2. The QBI deduction. The 20% deduction is calculated on qualified business income, and your own W-2 is not qualified business income. So every dollar of salary shrinks the base the 20% is taken on. Above the 2026 thresholds of $201,750 for single filers and $403,500 for joint filers, there's a second effect that runs the other way: your deduction is capped by W-2 wages, and your own salary counts toward the cap. If the agency has a real payroll the cap never binds. If you're thin on payroll, the two effects fight. I've written the wage-cap math out in both directions in a separate piece on the QBI deduction, so I won't rebuild it here.

3. Your health insurance deduction. If you own more than 2% of the S corporation, the deduction for premiums the company pays on your behalf is capped at your Medicare wages, which is box 5 of your W-2. Not box 1. Cut your salary far enough toward the premium and the deduction shrinks to meet it, on a return that files clean. Agency owners get caught by this more than most, because when a retainer ends the owner's W-2 is the first line that gets cut while the family plan keeps running. The full mechanics are in my article on the box 5 trap.

4. Retirement plan capacity. This is the number the payroll-tax-only crowd never mentions, and for a profitable owner it's the biggest of the four.

The company's deductible contribution to a 401(k) is limited to 25% of the compensation it pays the people in the plan. If you're the only one in it, that means 25% of your own W-2. Your own deferral for 2026 is $24,500. The total that can land in your account is $72,000. Do the arithmetic and a salary has to reach $190,000 before the plan can be filled: $72,000 less $24,500 is $47,500, and $47,500 is 25% of $190,000. Below that salary, every dollar you shave off your W-2 takes 25 cents off the ceiling of what the plan can hold for you.

Once you have staff in the plan, a cross-tested design can allocate more than 25% of your own pay to you, because the 25% is measured against everyone's covered pay. That loosens the arithmetic. It doesn't remove it: a thin owner salary still drags the plan's total capacity down, and your own allocation can never exceed your own compensation.

Now put number 1 and number 4 side by side. The Social Security wage base is $184,500. The plan-filling salary is $190,000. Between those two figures, raising your salary costs you 2.9% in Medicare tax and buys you 25 cents of deductible, creditor-protected plan room per dollar. That's a trade the payroll-tax-only analysis never sees, because it stopped looking at $184,500.

A cash balance plan layered on top is also driven off compensation, and it's where I've had many clients put an additional $100,000 or more away every year. A salary set for payroll tax alone can put that out of reach before the actuary ever gets a phone call. The design is in my article on cash balance plans for agency owners.

What Does the Trade Actually Look Like?

Take an owner filing jointly whose S corporation clears $400,000 before the owner's salary, with a 401(k) that covers only the owner. Two salaries, both inside a range you could defend for a general manager running a shop that size. The figures are rounded and illustrative; your own numbers belong on your own spreadsheet.

At $190,000 the owner pays about $10,000 more in payroll tax and loses $17,500 of QBI deduction. In exchange, $17,500 more goes into a plan the owner owns, deductible, and compounding outside the reach of a client who doesn't pay.

On the tax return for the year, that's close to a wash. Which is exactly the point. The four numbers don't all point the same way, so the lowest defensible salary isn't automatically the right one, and neither is the highest. There's a number to solve for, and it depends on your payroll, your filing status, your age, and whether you want the plan filled. That's a planning conversation, and it happens in the first quarter, not in April.

One more thing the table can't show. In the year the owner cut salary to chase payroll tax, the reasonable compensation file got thinner too. The $120,000 column isn't just a smaller plan. It's the column an examiner asks about.

Who This Is For, and Who It Isn't

This is for owners of marketing, advertising, PR and creative agencies with owner profit solidly into six figures and a real decision to make about entity and salary. If that's you, the four-number analysis is worth an hour with someone who has done it before.

It isn't for the freelancer clearing $90,000. At that level the S corporation's payroll tax saving is real but small, and the cost of running it properly can eat most of it. Stay simple until the profit says otherwise.

And it isn't for the owner who wants the lowest possible salary and a quiet life. That owner has the Watson case waiting, and a plan ceiling they'll never see.

Frequently Asked Questions

Should my marketing agency be an LLC or an S corp?

Both, usually. The LLC is the liability wrapper and the S corporation is a tax election you make on Form 2553. An LLC taxed as an S corporation is the most common structure for profitable agencies. The election is usually worth making once owner profit is solidly between $250,000 and $350,000.

What is a reasonable salary for an S corp owner?

What you'd have to pay a stranger to do your job. The regulation defines it as the amount ordinarily paid for like services by like businesses under like circumstances. Document your role, your hours, comparable compensation and what the business can bear, and revisit the number every year.

Can two S corp owners be paid different salaries?

Yes. An S corporation can have only one class of stock, so distributions must be paid in proportion to ownership, but the regulations say differences in compensation for services do not create a second class of stock. Unequal work is handled through unequal salaries; distributions stay pro rata.

When is the deadline to elect S corp status?

By the fifteenth day of the third month of the tax year you want it to apply to, which is March 15 for a calendar-year business. Miss it and the election generally takes effect the following year unless you qualify for late-election relief.

Does New York City recognize S corporations?

No. New York City never adopted the S election, so an S corporation doing business in the City pays the general corporation tax at 8.85% on its allocated income while the shareholders also pay City personal income tax on the pass-through. The federal saving stands; the City saving does not exist.

How does my S corp salary affect my retirement contributions?

The company's deductible 401(k) contribution is capped at 25% of the pay of everyone in the plan, which in an owner-only plan means 25% of your W-2. With a $24,500 deferral in 2026, a salary of $190,000 is needed to reach the $72,000 annual additions limit. Below that, every dollar cut from salary removes 25 cents of plan capacity. A plan with staff can be designed to loosen that, but not to remove it.

Does a low S corp salary reduce my QBI deduction?

It can raise it below the income threshold, because wages aren't qualified business income, and it can cut it above the threshold, because your own W-2 counts toward the wage cap that limits the deduction. Which effect wins depends on your payroll and your filing status.

Let's Talk

The election is a form. The salary is the plan. Get the form right and the salary wrong and you've saved a little Medicare tax while capping your plan, thinning your file and shrinking a deduction you didn't know you were touching.

If you want to see how the four numbers move for your own agency, it's a short conversation with your actual return in front of us. I wrote a book called The 12 Biggest Tax Mistakes That Cost Agency Owners Thousands, and the wrong entity is one of the twelve. You can request a free copy at the link below.

Request your free copy of the book

Filing a return isn't a tax strategy. Let's talk.

Craig S. Cody is a CPA, Certified Tax Coach, and retired NYPD Lieutenant. His firm works with more than 70 marketing and advertising agency owners every month, helping them keep more of what they make through proactive tax planning.

This article is general education, not advice for your specific situation. Confirm your own facts with your advisor before acting.