To convert a single member LLC to an S corp, you file IRS Form 2553 with the IRS, get an EIN if you don’t already have one, and set up payroll so you can pay yourself a W-2 salary. The LLC itself doesn’t change at the state level; only its federal tax classification does. The reason to bother is that S corporation status lets you split business income between salary (subject to payroll taxes) and distributions (not subject to them), and that split only produces meaningful savings once profits are well above what you’d reasonably pay yourself.
Confirm the LLC Qualifies First
By default, the IRS treats a single member LLC as a disregarded entity, so all income lands on the owner’s personal return like a sole proprietorship.1Internal Revenue Service. Single Member Limited Liability Companies To elect S corporation status under Section 1361 of the Internal Revenue Code, the entity has to meet each of the following:2Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined
- It’s a domestic entity, formed in the United States.
- Shareholders are U.S. citizens or resident aliens. Partnerships, corporations, and nonresident aliens can’t hold shares.
- There are no more than 100 shareholders. Not relevant now for a single-owner LLC, but it becomes relevant if you add owners later.
- There’s only one class of stock. Voting rights can differ across interests, but rights to distributions and liquidation proceeds must be identical.
For a solo owner who’s a U.S. citizen or resident, all four are usually easy to satisfy.
File Form 2553 by the Deadline
The election is made on IRS Form 2553, Election by a Small Business Corporation.3Internal Revenue Service. Filing Requirements for Filing Status Change The form asks for the entity’s name, EIN, the effective date, the tax year, and the signature of every shareholder. For a single member LLC, that’s just you.
If your LLC has been operating under your Social Security number, get an Employer Identification Number before you file. The S corporation will be filing its own return and running payroll, and both require an EIN.
When to File
To make the election effective for a given tax year, file Form 2553 either during the preceding tax year or no later than two months and 15 days after the start of the tax year you want it to take effect.4Internal Revenue Service. Instructions for Form 2553 For a calendar-year LLC, that’s March 15. Miss it and the election doesn’t kick in until the next January 1 unless you qualify for late relief.
You can mail or fax the form to the IRS service center listed in the instructions. Send it certified or keep the fax confirmation. If the deadline is close, the proof of timely filing is worth the small effort.
If You Missed the Deadline
The IRS grants late election relief when the entity intended to elect S corp status and had reasonable cause for missing the deadline. Revenue Procedure 2013-30 sets out the simplified process.5Internal Revenue Service. Rev. Proc. 2013-30 – Relief for Late S Corporation Elections To qualify, you can’t have filed a return inconsistent with S corporation status for that year, and the intended effective date can’t be more than 3 years and 75 days before your request.6Internal Revenue Service. Late Election Relief Submit the completed Form 2553 with a statement explaining the reasonable cause. The IRS will send back an acceptance or rejection letter.
Put Yourself on Payroll
This is where the tax benefit actually comes from. Under disregarded-entity treatment, all net business income is subject to self-employment tax: 15.3% combined, made up of 12.4% Social Security up to the annual wage base and 2.9% Medicare.1Internal Revenue Service. Single Member Limited Liability Companies After the S corp election, only the wages you pay yourself through payroll are hit with those employment taxes. Profits distributed above the salary aren’t.
There’s a condition attached. Any owner who performs services for the S corporation has to receive “reasonable compensation” as W-2 wages before taking distributions.7Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers A token salary with the rest pulled out as distributions isn’t allowed, and courts have consistently backed the IRS on that.
What Counts as Reasonable
The IRS weighs several factors, with the heaviest weight on what comparable businesses pay for similar roles. It also looks at your training and experience, the scope of your duties, the time you spend on the business, what you pay other employees, and your history of distributions relative to salary.8Internal Revenue Service. Wage Compensation for S Corporation Officers
Set the number too low and the IRS can reclassify your distributions as wages, with back taxes and penalties attached. Set it too high and you give away the savings that justified the election. Bureau of Labor Statistics data and industry compensation surveys for your role and geographic area are a workable starting point.
Run the Numbers Before You Elect
After you pay yourself a reasonable salary and cover business expenses, the remaining profit passes through to you as a distribution on Schedule K-1. That distribution is taxable income, but it isn’t subject to the 15.3% employment tax. That’s the whole financial case.
Say the LLC nets $150,000 and $80,000 is a defensible salary. The $70,000 in distributions avoids roughly $10,700 in self-employment tax. From that, subtract payroll processing costs, a more complicated tax return, and likely higher accounting fees. The election usually doesn’t pay off until net income sits comfortably above your reasonable salary.
The Section 199A qualified business income deduction complicates the math. Your W-2 salary doesn’t count as qualified business income, so paying yourself more shrinks the pool eligible for the 20% deduction. At higher income levels, the deduction is capped based on the W-2 wages the S corporation pays, so the same wages that shrink your QBI also raise your cap. Most owners come out ahead running these numbers with a tax professional rather than guessing.
New Filings You’ll Owe Every Year
A disregarded entity reports on Schedule C of your personal return. After the election, the business files its own return on Form 1120-S, due March 15 for calendar-year filers. Form 7004 gets you an automatic six-month extension to September 15, but only for filing, not for paying.9Internal Revenue Service. Instructions for Form 1120-S
Late-filing penalties on Form 1120-S run per shareholder per month. For a return required to be filed in 2026, the minimum penalty for a return more than 60 days late is $525 or the tax due, whichever is less.9Internal Revenue Service. Instructions for Form 1120-S Even with a single shareholder, it accumulates fast.
Payroll adds its own reporting cycle. You file Form 941 each quarter to report wages, withholdings, and employment taxes, and issue yourself a Form W-2 by January 31.10Internal Revenue Service. Depositing and Reporting Employment Taxes Payroll tax deposits are made monthly or semi-weekly depending on your liability. Most single-owner S corps use a payroll service for this.
Don’t Forget the State
Form 2553 changes federal classification only. Most states recognize the federal S election automatically, but some require a separate state election or notification. Skip a required state form and the business can end up taxed as a C corporation at the state level, which defeats the point. Confirm the rule with your state’s department of revenue or franchise tax board.
The election also changes how state income tax gets filed. Many states require a separate pass-through entity return instead of reporting the income on your personal state return. Some states charge a franchise tax, minimum tax, or annual fee on S corporations that differs from what you paid as an LLC, and the amounts range from under $100 to several thousand dollars depending on the state. If the business has nexus in multiple states (employees, office space, or significant sales are common triggers), each of those states may require its own registration and return.
Keep the Corporate Formalities
Once you’re taxed as an S corporation, run it like one. Keep the company’s finances separate from your personal accounts. Document major decisions in writing. Hold at least an annual meeting as sole shareholder and director and sign the minutes, even if the “meeting” is you at your kitchen table. Most states require these records, and they show the business operates as a real separate entity.
You don’t send meeting minutes to the IRS or any state agency, but keep them with your corporate records. If the IRS ever questions whether your distributions were really distributions or disguised wages, a board resolution setting your salary and approving distributions carries real weight. Skipping these formalities is a common mistake after an S corp election, and it’s the kind of thing that creates problems during an audit.