A single-member LLC S corp election is made by filing IRS Form 2553, and it changes how your LLC is taxed at the federal level without altering the LLC itself. The point of doing it is to cut the 15.3% self-employment tax you otherwise owe on every dollar of net profit.1Internal Revenue Service. Single Member Limited Liability Companies Once profits are high enough, the savings outrun the added payroll and filing costs. Below that point, the election creates work without a payoff.
What the Election Actually Changes
Your LLC is a state-law entity. The S corporation is a federal tax classification under Subchapter S of the Internal Revenue Code.2Office of the Law Revision Counsel. 26 U.S. Code 1361 – S Corporation Defined Electing S-Corp status leaves the LLC intact. Your operating agreement still controls the business, and your liability protection stays exactly where it was.
What changes is the paperwork at tax time. Instead of putting business income on Schedule C, the business files its own return on Form 1120-S and issues you a Schedule K-1 with your share of the profit.3Internal Revenue Service. About Form 1120-S You report that income on Schedule E of your Form 1040.4Internal Revenue Service. About Schedule E (Form 1040), Supplemental Income and Loss You also become an employee of your own company and start drawing a W-2 salary. That shift is what opens the door to the tax savings, and it’s also what creates the extra work.
When the Election Pays Off
Running an S-Corp costs money: payroll processing, quarterly and annual employment tax filings, a separate business return, and usually higher accounting fees. Most tax professionals put the break-even point somewhere around $50,000 to $70,000 in annual net profit. Under that range, the FICA savings rarely cover the compliance costs.
Above it, the math starts working in your favor and improves as profits grow. An owner earning $150,000 in net profit might save $8,000 to $12,000 a year depending on how the salary is set. Businesses with heavy equipment costs, employees, or large deductions that already shrink net profit may see a different picture, so it’s worth running the numbers with a tax professional before filing.
How the FICA Savings Work
As a disregarded entity, every dollar of net profit is hit with self-employment tax at 15.3%, which covers Social Security (12.4%) and Medicare (2.9%).5Social Security Administration. FICA and SECA Tax Rates The Social Security portion applies to earnings up to $184,500 in 2026.6Social Security Administration. Maximum Taxable Earnings
With S-Corp status, business income splits into two buckets: a W-2 salary and a distribution of remaining profit. Only the salary carries FICA. The distribution flows through to your personal return as ordinary income, taxed for income tax purposes but not for FICA.
A simplified example: your LLC earns $150,000 in net profit and you set a reasonable salary of $80,000.
- Without the election, you owe self-employment tax on the full $150,000. At 15.3%, that’s roughly $22,950 of raw exposure before the deduction for the employer-equivalent half.
- With the election, FICA applies only to the $80,000 salary. Employer and employee shares together run about $12,240. The remaining $70,000 distribution escapes FICA entirely, saving roughly $10,710.
Income tax still applies to both the salary and the distribution, so the election doesn’t reduce your income tax bill. The savings come from the FICA side alone. For owners with wages above $200,000 (single), the additional 0.9% Medicare surtax applies to W-2 wages but not to S-Corp distributions, which adds to the savings at higher income levels.7Internal Revenue Service. Questions and Answers for the Additional Medicare Tax
The Reasonable Salary Requirement
This is where most S-Corp elections get into trouble. The IRS requires any owner who works in the business to draw reasonable compensation as W-2 wages before taking distributions.8Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers Paying yourself $20,000 on a business earning $200,000 and calling the rest a distribution is exactly the move the IRS watches for.
The factors courts and the IRS look at include:9Internal Revenue Service. Fact Sheet 2008-25, S Corporation Reasonable Compensation
- Your training, credentials, and experience
- The duties you actually perform
- Hours you devote to the business
- What a non-owner would earn doing the same work at a similar company
- Distribution history relative to salary
- Any written compensation agreements
If the IRS finds your salary too low, it can reclassify distributions as wages retroactively and assess unpaid FICA, penalties, and interest. The best defense is documentation: research comparable salaries in your industry and geography and keep that research in your records. Erring slightly high is safer than pushing low.
Filing Form 2553
The election is made on Form 2553. An LLC doesn’t need to file Form 8832 first; filing 2553 alone handles the classification change.10Internal Revenue Service. About Form 2553, Election by a Small Business Corporation Your existing EIN carries over, so no new number is required.11Internal Revenue Service. When To Get a New EIN
Deadline
You must file either during the tax year before the one you want the election to take effect, or no later than two months and 15 days into the tax year you’re targeting. For a calendar-year LLC, that generally means March 15. In 2026, March 15 falls on a Sunday, so the deadline shifts to Monday, March 16.12Internal Revenue Service. Instructions for Form 255313Internal Revenue Service. Publication 509, Tax Calendars
Late Election Relief
Miss the deadline and you can still qualify for relief under Revenue Procedure 2013-30. You must file Form 2553 within three years and 75 days of the intended effective date, show reasonable cause for the delay, and demonstrate that you and the business have reported income consistently with S-Corp treatment for every affected year.14Internal Revenue Service. Revenue Procedure 2013-30 Attach a written explanation of the delay to the late-filed form.
Eligibility
A single-member LLC easily meets the S-Corp requirements: it’s domestic, has one eligible owner, and has only one class of ownership interest.15Internal Revenue Service. S Corporations The trap for solo owners is community property. If you’re married and live in a community property state, your spouse may have a community property interest in the LLC, and in that case both spouses must sign the consent section of Form 2553 even if only one is named as owner.16Internal Revenue Service. Instructions for Form 2553 A missing signature can invalidate the whole election.
What You’ll Owe the IRS Every Year After
Once the election takes effect, you’re an employee of your own business, and formal payroll starts. Most owners use payroll software or a service because deposit deadlines are strict and late-deposit penalties are automatic. You withhold federal income tax, state income tax if applicable, and the employee’s share of FICA from each paycheck. The business pays the employer’s share on top.
The federal filings look like this:
- Form 941, quarterly, reporting wages, income tax withheld, and both FICA shares.17Internal Revenue Service. About Form 941, Employer’s Quarterly Federal Tax Return
- Form 940, annually, for federal unemployment tax.18Internal Revenue Service. Forms 940, 941, 944 and 1040 (Sch H) Employment Taxes
- Form W-2 issued to yourself at year-end.
- Form 1120-S, the S corporation’s annual return, due the 15th day of the third month after year-end. For 2025 returns, the 2026 deadline is March 16 because March 15 is a Sunday.19Internal Revenue Service. Starting or Ending a Business FAQ
- Schedule K-1, attached to Form 1120-S and issued to you.20Internal Revenue Service. Shareholder’s Instructions for Schedule K-1 (Form 1120-S)
Keep personal and business finances strictly separate. Run every business transaction through the business bank account under the company’s EIN. Commingling invites scrutiny of both your reasonable compensation and your LLC’s liability shield.
Side Effects to Weigh Before Filing
Retirement Contributions
S-Corp status changes how solo 401(k) limits work. In 2026, the employee elective deferral limit is $24,500, with an $8,000 catch-up at age 50 and $11,250 for ages 60 through 63.21Internal Revenue Service. Retirement Topics – 401(k) and Profit-Sharing Plan Contribution Limits The combined employer-plus-employee limit is $72,000.22Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions The catch: the employer contribution (up to 25% of compensation) is calculated on your W-2 salary, not on total business profit. Set a salary of $80,000 and your employer contribution caps at $20,000. A low salary saves FICA but caps how much you can shovel into a tax-deferred retirement account.
QBI Deduction
The Section 199A qualified business income deduction lets pass-through owners deduct up to 20% of qualified business income. Your W-2 salary is excluded from that calculation. Only the K-1 distribution counts as QBI. On the $150,000/$80,000 salary example, only the $70,000 distribution qualifies for the 20% deduction, not the full profit that a sole proprietor would have used. This reduces your QBI deduction even as it saves FICA, and the two effects need to be weighed against each other. At higher incomes, a W-2 wage cap on the deduction can flip the math, and higher salaries may actually preserve more of the deduction.
Health Insurance
An owner holding more than 2% of an S corporation gets a specific health insurance benefit. If the S-Corp pays or reimburses the owner’s premiums, the business deducts them and includes them in the owner’s W-2 wages in Box 1. The premiums are not subject to FICA or FUTA.23Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues The owner then takes an above-the-line deduction on the personal return for the same amount. You lose the personal deduction for any month you or your spouse were eligible for a subsidized employer plan elsewhere.
State Taxes
Federal S-Corp treatment doesn’t automatically travel to your state. Some states impose entity-level franchise taxes, minimum fees, or net-income taxes on S corporations that a disregarded LLC would avoid. Some require a separate state-level election. A few don’t recognize S-Corp status at all for state income tax. Check with your state before filing, because a large state-level charge can eat the federal savings you’re expecting.
Backing Out Later
If the election stops making sense, you can revoke it. As the sole shareholder, you file a revocation statement with the IRS service center that received the original election.24Office of the Law Revision Counsel. 26 USC 1362 – Election; Revocation; Termination File on or before the 15th day of the third month and revocation applies to that whole year. File later and it takes effect the following year. You can also name a future effective date. Once revoked, the business generally cannot re-elect S-Corp status for five years without IRS consent. Common triggers: profits fall below the break-even point, you’re adding an ineligible owner, or your broader tax picture makes sole proprietor treatment more attractive.