Converting an LLC to S corp tax status can lower your self-employment tax bill by letting you split your business income into a reasonable salary and profit distributions, with only the salary portion subject to Social Security and Medicare taxes. The savings are real, sometimes several thousand dollars a year, but they come with a reasonable-salary rule the IRS actively enforces and roughly $2,000 to $5,000 in yearly compliance costs that can wipe out the benefit for smaller businesses.
How the Salary and Distribution Split Cuts Your Tax Bill
A standard single-member LLC hands you a blunt tax outcome: the IRS treats every dollar of net business income as self-employment income.1Internal Revenue Service. Limited Liability Company (LLC) That means 12.4% for Social Security and 2.9% for Medicare on top of your regular income tax, a combined 15.3% hit.2Social Security Administration. Contribution and Benefit Base Multi-member LLCs taxed as partnerships work the same way for each owner’s share.
Electing S corporation status changes what gets taxed. You file Form 2553, and the LLC keeps its legal form but adopts S corp tax rules.3Internal Revenue Service. About Form 2553, Election by a Small Business Corporation You then pay yourself a salary for the work you do, and only that salary is subject to employment taxes. Profit left over after salary comes to you as a shareholder distribution, and distributions are not subject to Social Security or Medicare taxes.
The Social Security portion applies only to wages up to $184,500 in 2026.2Social Security Administration. Contribution and Benefit Base The Medicare portion has no cap, and earners above $200,000 (single) or $250,000 (married filing jointly) owe an extra 0.9% Medicare surtax on wages over that threshold.4Office of the Law Revision Counsel. 26 USC 1401 – Rate of Tax
What the Savings Look Like on Real Numbers
Say your LLC nets $120,000 in profit. Taxed as a standard LLC, you owe self-employment tax on the full $120,000, roughly $18,360. You get to deduct half of that on your personal return, but the upfront hit is steep.
Elect S corp status and pay yourself a $70,000 salary, and employment taxes apply only to that $70,000, roughly $10,710 in combined FICA. The remaining $50,000 flows to you as a distribution with no employment tax attached. That’s about $7,650 you keep that would otherwise have gone to FICA.
The savings scale with the gap between your salary and total profit. That gap is not yours to set at will, though, and the boundary on it is the single biggest thing to understand before electing.
The Reasonable Salary Rule Sets the Ceiling on Your Savings
The IRS requires any shareholder who performs services for the business to receive reasonable compensation before taking distributions.5Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers “Reasonable” means what a similar business would pay someone with your skills, experience, and responsibilities to do the same job. A CPA running a profitable accounting firm cannot pay herself $24,000 and call the rest distributions.
The IRS weighs several factors when it looks at whether your salary holds up:
- Your training and experience. A licensed professional with 20 years in the field has a higher salary floor than someone starting out.
- Your duties and time commitment. Full-time work in the business should carry a full-time salary.
- Comparable pay at similar businesses. Industry salary data is what an examiner will pull.
- Your distribution pattern. Large distributions paired with a tiny salary is the pattern that triggers audits.
- What you pay other employees. If staff earn more than the owner for comparable work, expect questions.
Courts have repeatedly sided with the IRS when owners tried to minimize their salary. In one leading case, an accounting firm’s sole shareholder paid himself $24,000 while taking large distributions from a profitable practice; the appeals court upheld the reclassification, holding that the owner’s intent to limit wages doesn’t control and what matters is whether the payments were truly compensation for services performed.5Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers Courts have reclassified distributions, dividends, and even purported “loans” as wages in other cases.
When the IRS reclassifies distributions as wages, you owe back employment taxes on the reclassified amount, plus interest and penalties. A defensible salary, documented against industry data, is the price of admission for this strategy.
The QBI Deduction Works Better With W-2 Wages
Section 199A gives owners of pass-through businesses a deduction of up to 20% of their qualified business income.6Office of the Law Revision Counsel. 26 USC 199A – Qualified Business Income On $120,000 of qualified business income, that’s a potential $24,000 deduction against taxable income.
Above certain income thresholds, the deduction for a non-service business is capped at the greater of 50% of W-2 wages paid by the business, or 25% of W-2 wages plus 2.5% of the cost basis of qualifying property. Service businesses like consulting, law, or accounting phase out entirely over a defined income range.
This is where the S corp structure quietly helps. LLC owners operating as sole proprietors don’t pay themselves W-2 wages; they take draws. Once their income crosses the threshold, they can lose the deduction because there are no W-2 wages to satisfy the limitation test. S corp owners generate W-2 wages by paying themselves a salary, and those wages count toward the cap.7Internal Revenue Service. Qualified Business Income Deduction The payroll you’re already running for the FICA split preserves the 199A deduction as a side effect.
Health Insurance Gets Favorable Treatment for Owner-Employees
A shareholder who owns more than 2% of the S corporation gets a specific treatment for health insurance that most owners don’t fully use. The company can pay health insurance premiums on the owner’s behalf. Those premiums are reported as wages in Box 1 of the W-2, but they are not subject to Social Security, Medicare, or unemployment taxes.8Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues
The owner then claims the full premium as an above-the-line deduction on the personal return, which lowers adjusted gross income. A lower AGI can affect eligibility for other deductions, credits, and the net investment income tax threshold. The reporting has to be right: premiums must appear on the W-2, and the company must have a plan covering employees or a class of employees. Skip the W-2 step and the deduction gets denied.
Who Qualifies for the S Election
Not every LLC can make the election. The structural requirements apply at election and on an ongoing basis:9Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined
- The business must be a domestic entity.
- It can have no more than 100 shareholders. Family members can elect to count as a single shareholder.
- Shareholders must be individuals who are U.S. citizens or resident aliens. Partnerships and corporations cannot hold S corp stock. Some trusts, estates, and tax-exempt organizations qualify.
- There can be only a single class of stock. Voting-rights differences alone don’t break this, and straight debt is not treated as a second class.
- Certain banks, insurance companies, and DISCs cannot elect S status.
For most single-owner and small multi-member LLCs, these are easy to meet. They matter more if you plan to raise institutional capital, because venture firms structured as partnerships or corporations cannot hold S corp stock.
To take effect for the current tax year, Form 2553 must be filed no later than two months and 15 days after the start of that tax year, which for calendar-year businesses is March 15.10Office of the Law Revision Counsel. 26 USC 1362 – Election; Revocation; Termination Every owner on the day of the election must consent by signing. Miss the deadline and the election shifts to the following year unless you qualify for late relief, generally available within three years and 75 days of the intended effective date if all shareholders have filed consistently and you can show reasonable cause.
When the Election Doesn’t Pay Off
Converting too early is the most common mistake. Running payroll, filing Form 1120-S, and the extra accounting work typically add $2,000 to $5,000 a year in compliance costs. Below roughly $75,000 in net profit, those costs consume most or all of the employment-tax savings. You pay more in overhead than you save in FICA.
The election also fits poorly in a few situations:
- Income that swings dramatically year to year, which makes justifying a stable reasonable salary harder and raises audit risk.
- Plans to raise outside capital, since venture funds and corporate investors can’t hold S corp stock and you’d need to revoke the election before closing a round.
- Very high earners already past the Social Security wage base. Once your reasonable salary exceeds $184,500 in 2026, the 12.4% Social Security tax stops applying to additional wages anyway, and only the 2.9% Medicare savings on distributions remain.2Social Security Administration. Contribution and Benefit Base
- Business structures that need preferred and common equity or investors with different distribution rights, which the single-class-of-stock rule blocks.
Some states also impose entity-level taxes or franchise fees on S corporations that don’t apply to standard LLCs, so check your state’s treatment before you file. An unexpected state tax can flip the math.
The sweet spot tends to be businesses consistently netting between $75,000 and $300,000 where the owner performs meaningful services and can justify a salary that’s genuinely reasonable while still leaving a substantial distribution. Inside that range the FICA savings clear the compliance costs by a healthy margin; outside it, the numbers usually don’t work.