Electing S corporation status for a single-member LLC changes how the IRS taxes your business income without changing the LLC itself. Instead of every dollar of profit hitting self-employment tax on Schedule C, you split the profit into a W-2 salary that pays payroll taxes and distributions that don’t. The legal entity, liability protection, and state registration all stay the same. Only the tax treatment shifts, and the savings come from shrinking the share of profit exposed to Social Security and Medicare taxes.
Whether it pays off depends on how much you earn, what a reasonable salary looks like for your work, and whether you’re willing to take on payroll processing and a separate business tax return.
What the Election Changes
By default, the IRS treats a single-member LLC as a “disregarded entity,” meaning the business has no separate tax identity from its owner.1Internal Revenue Service. Single Member Limited Liability Companies All income and expenses flow onto Schedule C of your personal return.2Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss from Business Net profit gets hit with ordinary income tax plus self-employment tax at a combined 15.3%: 12.4% for Social Security and 2.9% for Medicare.3Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
The Social Security portion applies to net earnings up to $184,500 in 2026.4Social Security Administration. Contribution and Benefit Base Medicare has no cap, and earners above $200,000 (single) or $250,000 (married filing jointly) pay an extra 0.9% surtax.5Internal Revenue Service. Questions and Answers for the Additional Medicare Tax You can deduct the employer-equivalent half of self-employment tax when calculating AGI, but that only lowers income tax; it doesn’t reduce the self-employment tax itself.3Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
The problem is straightforward: every dollar of Schedule C profit faces that 15.3% tax. An owner with $120,000 in net profit owes roughly $18,360 in self-employment tax before income taxes even start. The S corporation election exists to shrink that number.
How the Salary and Distribution Split Works
Once the election takes effect, you become an employee of your own LLC and must receive a W-2 salary. That salary is subject to FICA taxes — the same Social Security and Medicare taxes as before, but split evenly between employer and employee at 7.65% each. The S corporation pays the employer half and deducts it as a business expense. Your paycheck covers the employee half.6Internal Revenue Service. Wage Compensation for S Corporation Officers
After the salary is paid, remaining profit passes through to you as a distribution. Distributions get reported on your personal return and face ordinary income tax, but they don’t pay FICA or self-employment tax. That gap between the salary and total profit is where the savings live.
Take an owner with $120,000 in net profit who sets a reasonable salary at $60,000. FICA applies to the $60,000 salary at 15.3%, or $9,180 total, split between the employer and employee portions. The remaining $60,000 flows through as a distribution with zero FICA exposure. On Schedule C, that same $120,000 would have owed roughly $18,360 in self-employment tax. With the election, FICA drops to about $9,180, a savings of roughly $9,000 before accounting for compliance costs. Both amounts still face ordinary income tax.
The Reasonable Compensation Rule
The IRS does not let owners zero out their salary and take everything as distributions. S corporation officers who perform services must receive “reasonable compensation” as W-2 wages before taking any distributions.6Internal Revenue Service. Wage Compensation for S Corporation Officers This is the rule the IRS enforces most aggressively, and courts have consistently upheld reclassification of distributions as wages when salaries were unreasonably low.
If the IRS decides your salary is too low, it can reclassify distributions as wages retroactively. That means back payroll taxes, penalties for failure to withhold, and interest on the unpaid amounts. Skimping on salary to inflate distributions is the fastest way to lose more than you saved.
There is no fixed formula or safe-harbor percentage. The IRS uses a market-based approach, asking what a comparable business would pay someone to do the same work. Courts have weighed factors including:6Internal Revenue Service. Wage Compensation for S Corporation Officers
- Training, experience, and credentials in your field
- The duties and responsibilities you actually perform
- Time and effort devoted to the business
- What comparable businesses pay for equivalent work
- Dividend and distribution history relative to salary
- Documented compensation agreements
Salary surveys from the Bureau of Labor Statistics, industry trade data, and job listing sites are common tools for documenting a defensible figure. Setting your salary near the low end of the comparable range is defensible. Setting it at 20% of what a replacement would cost is not.
When the Election Actually Saves Money
The election adds real compliance costs. You’ll need payroll processing, a separate corporate tax return, and probably higher accounting fees. Together those generally run $2,000 to $4,500 per year for payroll services and CPA preparation of Form 1120-S, on top of your personal return. Some states also impose minimum franchise taxes on S corporations regardless of income.
As a rough benchmark, the election tends to produce net savings when annual profit consistently exceeds $50,000. Below that, FICA savings on distributions are too thin to cover the added compliance costs. At $40,000 in profit, for example, reasonable compensation might need to be $30,000 or more, leaving only $10,000 in distributions and under $1,500 in FICA savings, which barely covers a payroll service.
Owners with profit above the Social Security wage base of $184,500 see diminishing returns on the Social Security portion, since both salary and self-employment income stop accumulating the 12.4% tax above that threshold.4Social Security Administration. Contribution and Benefit Base The 2.9% Medicare tax and the 0.9% surtax above $200,000 still apply with no cap, so the election keeps saving Medicare taxes at higher income levels.
The QBI Deduction Complicates the Math
The Section 199A qualified business income deduction lets pass-through owners deduct up to 20% of qualified business income from taxable income. It was created by the Tax Cuts and Jobs Act and was originally set to expire after 2025. If Congress has extended it into 2026, the interaction with reasonable compensation matters.
Your W-2 salary does not count as QBI. Only the profit that passes through on Schedule K-1 qualifies. Setting your salary higher reduces the pool of income eligible for the 20% deduction, which partially offsets the FICA savings from keeping distributions high. The optimal salary balances both: low enough to save on FICA, but not so low that it fails the reasonable compensation test or, for higher earners, trips the QBI wage limitation.
For higher-income owners, the QBI deduction 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 unadjusted basis of qualified property. Setting salary too low can actually limit your QBI deduction. Running the numbers on both FICA savings and QBI impact is the only reliable way to find the right figure at this income level.
How to Make the Election
The election is made by filing IRS Form 2553, Election by a Small Business Corporation.7Internal Revenue Service. About Form 2553, Election by a Small Business Corporation A single-member LLC does not need to file Form 8832 separately. Form 2553 serves as both the deemed corporate classification election and the S corporation election, provided the LLC hasn’t previously filed Form 8832.
To take effect for the current tax year, Form 2553 must be filed no later than two months and 15 days after the tax year begins, or at any time during the preceding tax year.8Office of the Law Revision Counsel. 26 U.S. Code 1362 – Election; Revocation; Termination For a calendar-year LLC, that deadline is March 15.9Internal Revenue Service. Instructions for Form 2553 For a newly formed LLC, the clock starts on the date the entity first has shareholders, acquires assets, or begins doing business, whichever comes first.
If You Miss the Deadline
Missing the filing window isn’t necessarily fatal. Revenue Procedure 2013-30 provides a simplified path to late election relief when:10Internal Revenue Service. Revenue Procedure 2013-30
- The entity intended to be an S corporation as of the requested effective date
- Relief is requested within three years and 75 days after that intended effective date
- The only reason the entity didn’t qualify is the late Form 2553
- There’s a reasonable explanation and the entity acted diligently once it discovered the problem
- The entity and owner reported all income as if the election had been in effect
An even broader window applies if the entity has always filed returns as an S corporation and at least six months have passed since the first such return. In that case, the three-year-and-75-day limit doesn’t apply.10Internal Revenue Service. Revenue Procedure 2013-30 The completed Form 2553 is filed with a statement explaining the reasonable cause.
What You Have to Do After the Election
The tradeoff for tax savings is real administrative overhead. You stop filing Schedule C and take on a set of employer and corporate obligations that a sole proprietor never faces.
Running Payroll
The S corporation must run payroll for you as the owner-employee, withholding federal and state income taxes along with the employee’s 7.65% FICA share. The business matches that with its own 7.65% as employer. Payroll runs at regular intervals, usually monthly or biweekly, not as a single year-end payment.
Each quarter, the business files Form 941 to report withheld income tax and both halves of FICA.11Internal Revenue Service. About Form 941, Employer’s Quarterly Federal Tax Return Annually, it files Form 940 for federal unemployment tax.12Internal Revenue Service. Topic No. 759, Form 940 – Employer’s Annual Federal Unemployment (FUTA) Tax Return State unemployment insurance is a separate obligation with rates that vary by state. You receive a W-2 at year end.
Filing Form 1120-S
The S corporation files Form 1120-S, an informational return reporting the entity’s income, deductions, and credits. The entity itself pays no income tax. Net income or loss flows through on Schedule K-1, which you then report on your personal Form 1040.13Internal Revenue Service. About Form 1120-S, U.S. Income Tax Return for an S Corporation
Form 1120-S is due March 15 for calendar-year entities, with an automatic six-month extension available via Form 7004.14Internal Revenue Service. Publication 509 (2026), Tax Calendars Missing this deadline triggers a penalty of roughly $230 per month per shareholder. Even for a single-shareholder S corp, it adds up.
Health Insurance
When the S corporation pays health insurance premiums for a more-than-2% shareholder-employee — which is every single-member LLC owner — the premiums are deductible by the business but must be included in the owner’s W-2 wages in Box 1.15Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues The premiums are not subject to FICA or FUTA, so they go in Box 1 but are excluded from Boxes 3 and 5.16Internal Revenue Service. IRS Notice 2008-1
You then deduct the premiums on your personal return as a self-employed health insurance deduction, which effectively washes out the income inclusion. The S corporation must either pay the premiums directly or reimburse you, and the premiums must be reported on the W-2 in the same tax year. Skip the W-2 reporting step and the deduction disappears.16Internal Revenue Service. IRS Notice 2008-1
Retirement Contributions
You can still fund a solo 401(k) as an S corporation owner, but the mechanics differ from a Schedule C filer. The employee deferral limit for 2026 is $24,500, with an additional $8,000 catch-up for those 50 and older, or $11,250 for those aged 60 through 63.17Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 The S corporation can also make an employer contribution of up to 25% of your W-2 compensation.
The catch: both halves are calculated on W-2 wages, not total business profit. A Schedule C filer bases the employer contribution on net self-employment income, which can be the full profit. Under the S corp, if your salary is $60,000, the maximum employer contribution is $15,000. Setting salary low to save FICA can quietly limit how much you can shelter for retirement. If retirement savings is a priority, weigh that against the payroll tax savings.
State Treatment Isn’t Automatic
The federal election is not automatically recognized everywhere. Most states follow the federal pass-through treatment, so the S corporation itself pays no state income tax and you report the income on your personal state return. But some states impose their own tax on S corporations or charge a minimum franchise fee regardless of income, ranging from negligible amounts to several hundred dollars a year.
Some states require a separate state-level S corporation election in addition to the federal filing. Others treat S corporations as C corporations for state tax purposes and impose corporate-level tax. Check the treatment in the state where your LLC is organized and any state where you conduct business, since operating across state lines can create filing obligations in each one.
Undoing the Election
If the election stops making sense — profit shrinks, compliance costs outweigh savings, or your situation changes — you can revoke it. As the sole shareholder, revocation requires only your written consent.8Office of the Law Revision Counsel. 26 U.S. Code 1362 – Election; Revocation; Termination
To make revocation effective on the first day of the tax year, submit it by the 15th day of the third month, which is March 15 for calendar-year entities. A revocation received after that date takes effect on the date specified, or the following tax year if none is given.18Internal Revenue Service. Revoking a Subchapter S Election
After revoking, the entity generally cannot re-elect S corporation status for five tax years without IRS consent. Treat the decision as semi-permanent rather than something to toggle year to year based on profit swings.