Two freelance designers bill the same clients, earn the same $120,000, and deduct the same software subscriptions. One of them pays several thousand dollars less in tax. Nothing about their work is different. The difference is a two-page form one of them mailed to the IRS — Form 2553, the S corporation election — and a payroll habit that goes with it.

The S corp election is probably the most talked-about and least understood move in freelance tax planning. It gets sold online as a magic switch: flip it and the 15.3% self-employment tax mostly disappears. The truth is narrower and more interesting. The election changes which of your dollars are subject to payroll tax, it comes with a legal obligation to pay yourself a defensible salary, and it carries real carrying costs that eat the savings at lower incomes. Whether it helps you is not a matter of opinion. It's arithmetic — and you can run it yourself.

Why the sole proprietor pays 15.3% on everything

When you freelance as a sole proprietor (or as a single-member LLC, which the IRS taxes identically by default), there is no legal distinction between you and the business. Every dollar of net profit on your Schedule C flows to Schedule SE, where self-employment tax applies: 12.4% for Social Security up to the annual wage base ($176,100 in 2025) and 2.9% for Medicare with no cap at all.

Notice what that base is: profit, not what you paid yourself. It doesn't matter whether you transferred the money to your personal checking account or left it sitting in the business. If the business earned it, self-employment tax touches it. There is no lever to pull.

What the S election actually changes

An S corporation introduces exactly that lever. Once your business is taxed as an S corp, you wear two hats. You are an employee, and the corporation pays you a salary through actual payroll — with Social Security and Medicare taxes withheld and matched, just like any W-2 job. And you are a shareholder, entitled to take the remaining profit as distributions.

Here is the entire mechanism in one sentence: wages are subject to FICA taxes; shareholder distributions are not. The profit that flows to you as a distribution still gets hit with ordinary income tax — the S corp is a pass-through, so nothing escapes the 1040 — but it skips the 15.3%.

So the sole proprietor pays self-employment tax on all $120,000 of profit. The S corp owner who pays herself a $70,000 salary pays FICA on the $70,000 and takes the remaining $50,000 as a distribution that avoids payroll tax entirely. At 15.3%, that's roughly $7,650 in gross savings before costs — and before the rule that keeps the whole arrangement honest.

Reasonable compensation: the rule that keeps it honest

If distributions escape payroll tax and salary doesn't, the obvious temptation is to pay yourself a $5,000 salary and take $115,000 in distributions. The IRS anticipated this. S corp shareholder-employees are required to pay themselves reasonable compensation — a salary in line with what the market would pay someone else to do the same work — before taking distributions.

This isn't a paper rule. In David E. Watson, P.C. v. United States, an Iowa CPA paid himself a $24,000 salary while pulling around $200,000 a year out of his firm in distributions. The IRS recharacterized a large chunk of those distributions as wages, assessed the back payroll taxes, and the Eighth Circuit upheld it in 2012. The court's logic is the standard you should apply to yourself: what would you have to pay a stranger, with your skills, to do your job?

The practical upshot is that your savings come only from the gap between your profit and a defensible salary. A freelancer earning $65,000 whose market-rate salary is $60,000 has almost no gap to work with. A consultant earning $180,000 whose work commands $90,000 on the open market has a very large one. The election rewards profit above your own market wage — which is why it's a milestone move, not a day-one move.

The costs the enthusiastic version leaves out

An S corp is not free to operate, and the costs are the same whether you save $12,000 or $800.

Payroll itself. You must run real payroll on yourself — quarterly filings (Form 941), annual W-2s, unemployment filings. In practice that means a payroll service, typically several hundred dollars a year.

A separate tax return. The S corp files its own Form 1120-S with a K-1 to you. That usually means higher tax-prep costs or more of your own time, every year, forever.

State-level friction. Some states tax S corps directly. California charges a 1.5% tax on S corp net income with an $800 annual minimum franchise tax; New York City doesn't recognize the S election at all for its own corporate tax. Your state can quietly rewrite the math.

Retirement and benefit side effects. Solo 401(k) contributions key off your W-2 wages, not total profit, so a low salary shrinks the amount you can shelter. Your salary also determines your Social Security earnings record — pay yourself less for decades and your eventual benefit reflects it. And the 20% QBI deduction interacts here too: your own wages reduce the business income the deduction is computed on, which claws back part of the apparent savings.

Run the numbers with all of this included and a rough shape emerges: below the mid-five figures of profit, the election usually costs more than it saves; well above your own market salary, it usually wins. In between is where you actually have to do the arithmetic.

Why people get this decision wrong in both directions

Behavioral economists Samuelson and Zeckhauser named the pattern decades ago: status quo bias, our tendency to stick with the default even when switching is clearly better. Sole proprietorship is the default — you became one automatically the day you sent your first invoice — so freelancers routinely stay in it years past the point where the election would pay for itself, deterred by paperwork that costs a weekend and saves five figures.

But the bias cuts the other way too. Once the S corp becomes the thing everyone on the internet says to do, it becomes a social default, and freelancers elect at $50,000 of profit because it feels like what serious business owners do. The antidote in both directions is the same: ignore the vibe, compute the gap between your profit and your reasonable salary, multiply by 15.3%, subtract the carrying costs, and let the number decide.

How and when to elect

The mechanics are simple. You need an actual entity (an LLC works — the S corp is a tax status, not a new company), and you file Form 2553. For the election to apply to the current tax year, it's generally due within two months and fifteen days of the start of that year — March 15 for calendar-year businesses. Miss it and you're usually electing for next year, though the IRS grants late-election relief fairly generously under Rev. Proc. 2013-30 if you had reasonable cause.

One thing the election does not end: estimated taxes. Payroll withholding covers the tax on your salary, but income tax on your distributions and K-1 income still lands on you personally — which means quarterly estimated payments remain part of your life, now with a payroll schedule layered on top.

Keeping the quarters straight, whichever hat you're wearing

That last point is where good intentions usually fray. The S election doesn't simplify your tax year; it splits it into two streams — withheld wages and untaxed pass-through profit — and the second stream still needs to be estimated, set aside, and paid four times a year on the IRS's lopsided calendar. That's the job Payday was built for: connect your Stripe account or bank, and it watches what you actually earned, calculates each Q1–Q4 estimated payment, nudges you before every deadline, and exports a TurboTax-ready file at year-end. Whether you stay a sole proprietor or make the election the math finally justifies, the quarters keep coming — Payday makes sure none of them surprises you.