Should You Switch to an S Corp? The Tax Math for 2026

If you're a solo business owner pulling in six figures, you've probably typed this into Google: “Should I switch to an S corp?” It's the question that's been burning in your mind since your accountant mentioned it, or since you saw a tax strategy post on social media. And the answer, as with so much in tax, is: it depends. But after looking at the 2026 numbers, I've got a clear opinion: for many profitable solo businesses, the S corp election is worth a serious look, but it's not the automatic win that online gurus claim.

Let me start with the core reason anyone considers an S corp: the self-employment tax. As a sole proprietor, you pay self-employment tax of 15.3% on your net earnings, which covers Social Security (12.4%) and Medicare (2.9%) (IRS Self-Employment Tax). That's on all of your profit, dollar for dollar. In 2026, the Social Security portion maxes out at a wage base of $184,500 (SSA), so if you're above that, the effective rate drops, but for most business owners—those in the $50,000 to $150,000 profit range—the full 15.3% hits hard.

Here's the S corp pitch: you pay yourself a “reasonable” salary, and on that salary you pay the same FICA taxes (7.65% each for you and the company). But the remaining profit passes through to you as distributions, which are not subject to self-employment tax. So on every dollar you take as a distribution instead of salary, you save that 15.3%.

But—and this is the part the cheerleaders skip—the IRS and the courts have made it clear that you can't just call it all distributions. You have to pay yourself a reasonable salary for the work you perform. And that salary is subject not only to FICA but also to federal income tax withholding and unemployment taxes. If you set your salary too low, the IRS can reclassify distributions as wages, plus penalties and interest. I've seen it happen, and it's not pretty.

So how do you decide? Let's run the numbers for a hypothetical. Say you're a single filer with $120,000 in net profit from your sole proprietorship in 2026. After the standard deduction of $16,100 (IRS), your taxable income is about $103,900. Your income tax, using the 2026 brackets, is roughly $18,000. But you also owe self-employment tax of 15.3% on that $120,000—that's $18,360. Total federal tax: about $36,360.

Now, suppose you form an S corp and pay yourself a reasonable salary of $80,000. The corporation pays its half of FICA on that—6.2% Social Security plus 1.45% Medicare, or 7.65%—which is $6,120. You pay the other half, also $6,120, and that's withheld from your paycheck. The remaining $40,000 is a distribution, not subject to FICA. But wait—your salary is also subject to federal income tax, and so is the distribution. Your total taxable income is still $120,000 (assuming the distribution passes through), so your income tax is still about $18,000. But your payroll tax is now just $12,240 (both halves) instead of $18,360. That's a savings of $6,120.

But it's not all savings. You'll have additional costs: payroll processing, workers' comp, unemployment insurance, and the extra complexity of running payroll. And there's the FUTA tax—the federal unemployment tax is 6.0% on the first $7,000 of each employee's wages, but after the state credit, it's often 0.6% (IRS FUTA). That's a tiny $42 on $7,000, but it's still a cost. Plus, you'll have to file a separate corporate tax return (Form 1120-S) and possibly pay a tax preparer more.

So the S corp saves you money only if the payroll tax savings exceed the added administrative costs. In my example, the savings is about $6,000, which is significant. But if your profit is only $40,000, the savings is smaller, and the fixed costs of running payroll might eat it all. The IRS has a “reasonable salary” requirement, and if you're not careful, you could end up with a salary that's too low, and the IRS could reclassify your distributions and hit you with back taxes and penalties.

There's also the Social Security wage base to consider. If your salary is already above $184,500 (the 2026 base), you're maxing out Social Security anyway, so the only payroll tax you're saving is the 2.9% Medicare portion (plus the 0.9% Additional Medicare Tax if you're above $200,000 for singles) (IRS Medicare Surtax). In that case, the S corp's benefit is much smaller, and the administrative hassle may not be worth it.

And don't forget the Additional Medicare Tax. For single filers with Medicare wages above $200,000, there's an extra 0.9% tax on the excess, and the employer must withhold it from wages over $200,000, regardless of filing status (IRS Medicare Surtax). If you're in that range, the S corp distribution might avoid that 0.9% too.

The S Corp Election Is Not Free

I keep hearing people talk about S corps as if they're a magic tax loophole. They're not. You have to file Form 2553 to elect S status, and you must meet eligibility requirements: no more than 100 shareholders, only individuals (with some exceptions), and only one class of stock (IRS S corporation). For a solo owner, that's easy. But you also have to run payroll, file quarterly payroll tax returns, and file an annual Form 1120-S. If you're used to just paying estimated taxes as a sole proprietor, this is a new world of paperwork.

And there's a state tax angle I can't ignore. Some states impose their own corporate taxes or franchise taxes on S corps, even though the federal tax is pass-through. In California, for example, there's a 1.5% franchise tax on S corp net income, with a minimum of $800. That can eat into your savings. Check your state's rules before you jump.

Given all that, my recommendation is this: If you're a solo business owner with net profit above roughly $80,000, and you're currently paying self-employment tax on that full amount, the S corp is likely worth the administrative hassle. The tax savings can easily be $5,000 to $10,000 a year, which more than covers the added costs. But if your profit is below $50,000, or if you're near the Social Security wage base, the S corp may not pay off. Talk to a CPA who can model your specific situation.

One more thing: The IRS requires that you pay yourself a “reasonable” salary. Don't try to game it by setting your salary at $10,000. The IRS and the courts use factors like your industry, your job duties, and what you'd pay someone else to do the job. When in doubt, err on the side of a higher salary—that's the safer approach, and it also builds your Social Security benefits.

The 2026 Numbers That Matter

Let me give you the concrete tax figures for 2026, because they're essential for your decision. The standard deduction is $16,100 for single filers (IRS). The Social Security wage base is $184,500 (SSA). The self-employment tax rate is 15.3% (IRS Self-Employment Tax). And the FICA rates are 6.2% for Social Security and 1.45% for Medicare on both employer and employee (IRS Payroll Tax Rates). These numbers are the bedrock of the S corp decision.

Also, remember that if you're an S corp shareholder-employee, you don't pay estimated tax on your salary—it's withheld. But you may still need to pay estimated tax on your distributions and other income. The general rule is that you must make estimated payments if you expect to owe $1,000 or more when you file (IRS estimated tax). And the safe harbor is to pay at least 100% of your prior year's tax (or 90% of the current year's) to avoid penalties (IRS estimated tax). Your CPA can help you plan.

So, should you switch? I can't give you a blanket yes, but I can tell you what I'd do if I were in your shoes. I'd run the numbers with a CPA who specializes in small business. I'd estimate my reasonable salary, factor in all the administrative costs, and compare my total tax under both scenarios. If the S corp saves me at least $3,000 a year after costs, I'd do it. If not, I'd stay as a sole proprietor and focus on growing my business.

One last thing: Don't make this decision based on a friend's story or a social media post. Your situation is unique, and the tax law is complicated. But with the 2026 numbers in front of you, you're in a better position to ask the right questions.

Quick Tip

Warning: If you form an S corp, you must pay yourself a reasonable salary. The IRS has no specific formula, but a common rule of thumb is to pay yourself what you'd pay someone else to do your job. Don't skimp to save taxes—it's a red flag for audit.

The Bottom Line

The S corp can be a powerful tax strategy for profitable solo businesses, but it's not automatic. The decision hinges on your profit level, your state of residence, and your ability to handle the administrative burden. In 2026, with a 15.3% self-employment tax and a standard deduction of $16,100, the math favors S corps for many owners above $80,000 in profit. But the only way to know for sure is to crunch your own numbers with a professional.

Sources

• IRS Self-Employment Tax - https://www.irs.gov/businesses/small-businesses-self-employed/self-employment-tax-social-security-and-medicare-taxes
• SSA 2026 COLA fact sheet - https://www.ssa.gov/news/en/cola/factsheets/2026.html
• IRS Payroll Tax Rates - https://www.irs.gov/taxtopics/tc751
• IRS Medicare Surtax - https://www.irs.gov/taxtopics/tc560
• IRS Estimated Taxes - https://www.irs.gov/businesses/small-businesses-self-employed/estimated-taxes
• IRS S Corporations - https://www.irs.gov/businesses/small-businesses-self-employed/s-corporations