If you searched "S corp vs LLC," you're really asking two different questions at once. This guide breaks down how each one works.
An LLC is a legal business structure. An S corp is a tax status. You can actually have both at the same time, since an LLC can elect S corp taxation with the IRS while staying an LLC under state law [1] [2].
To form an LLC, you generally file a formation document (often called Articles of Organization) with your state and appoint a registered agent. Depending on your ownership structure and whether you'll have employees, you may also need an EIN from the IRS.
To add S corp tax status, you file Form 2553 with the IRS after your LLC or corporation already exists [2]. These are two separate decisions, and it's easy to mix them up. Here's a clear, side-by-side breakdown of both.
What is an LLC?
A limited liability company (LLC) is designed to separate your personal assets from your business debts. If your business gets sued or can't pay a bill, your house, car, and personal savings are protected in most cases. This protection is called the corporate veil, the legal wall between you and your company.
By default, the IRS taxes LLCs as pass-through entities. That means, under the default classification, your business itself doesn't pay federal income tax. Profit passes through to your personal tax return, and you pay taxes on it there [3]. A single-member LLC is taxed like a sole proprietorship unless you elect otherwise. A multi-member LLC is taxed like a partnership unless you elect otherwise.
LLCs are popular with first-time founders because they're simple to run. You don't need a board of directors. You don't need annual shareholder meetings.
What is an S corp?
An S corp isn't a business structure you form at the state level. It's a tax election you make with the IRS on top of an existing LLC or corporation. Once approved, your company's profit and loss still pass through to your personal return, avoiding the double taxation that C corporations face. But the way you pay yourself changes, and that's the part that actually saves money for the right business.
Under S corp taxation, an owner who works in the business has to take a "reasonable salary," paid through payroll like any employee [4]. Any profit left over after that salary can be paid out as a distribution. Distributions generally aren't subject to self-employment tax, though they can still have income tax consequences depending on your situation. That distinction is a big part of why people elect S corp status.
To qualify for S corp status, the IRS requires:
- No more than 100 shareholders
- Only one class of stock
- A domestic business that isn't an ineligible entity, such as certain financial institutions or insurance companies
- Shareholders must generally be eligible individuals, certain trusts and estates, or qualifying tax-exempt organizations, and U.S. citizens or resident aliens (partnerships, corporations, and nonresident aliens generally can't hold shares)
LLC vs. S corp: Quick Comparison
Item | LLC (default taxation) | LLC or corporation with S corp election |
How it's taxed | Pass-through, all profit hits your personal return | Pass-through, but split between salary and distributions |
Self-employment tax | Generally owed on all net profit for an active owner | Salary is subject to payroll taxes; qualifying distributions generally are not |
Ownership | Unlimited members, no citizenship requirement | Max 100 shareholders, U.S. citizens or residents only |
Management | Informal (Members or a hired manager) | Same LLC management structure, plus payroll and compensation recordkeeping |
Paperwork | Operating agreement, plus state annual/periodic filings | Payroll setup, reasonable salary documentation, plus the same state filings |
Best for | Simplicity and flexibility | Consistent profit that comfortably covers a reasonable salary plus payroll and accounting costs |
Self-employment Tax Savings: S Corp vs. LLC
This is the number everyone searching this term actually wants, so here it is with real math.
In 2026, self-employment tax is 15.3% of your net earnings, made up of 12.4% for Social Security (on income up to the $184,500 wage base) and 2.9% for Medicare (no cap) [5]. If you run an LLC with no S corp election and your business nets $100,000 in profit, you owe self-employment tax on essentially all of it, roughly $14,130 after the standard adjustment for the 92.35% calculation the IRS uses [6].
Now compare that to an S corp election. Say your business earns that same $100,000 before the owner pays, and you take a reasonable salary of $60,000. That salary generates payroll tax of about $4,590 from you and another $4,590 from the business.
After the salary and the business's share of payroll tax, roughly $35,410 is left as profit, which you can take as a distribution that isn't subject to self-employment tax, before other payroll costs and expenses. Depending on your specific numbers, this structure can still save real money, but the savings are smaller than just subtracting the salary from your profit.
The tradeoff is cost and complexity. You'll need payroll processing, a defensible "reasonable salary" figure the IRS won't challenge, and an annual corporate tax return (Form 1120-S). Those added costs can eat into the savings at lower profit levels, which is why most owners wait until profit is comfortably above what a reasonable salary and those extra costs would require. There's no official IRS income threshold for making the switch; it comes down to running your own numbers.
Ownership Restrictions For S Corps vs. LLCs
LLCs generally offer flexible ownership. Most states allow one member or many, though professional or regulated businesses may face added restrictions.
S Corps work differently because the designation exists inside the tax code, not state corporate law. The IRS caps S corps at 100 shareholders, and shareholders must generally be eligible individuals, certain trusts and estates, or qualifying tax-exempt organizations.
Certain trusts qualify, but partnerships and corporations generally can't own shares in an S corp. If you're planning to bring on foreign investors or raise money from venture capital, an S corp's stock restrictions will get in your way fast. LLCs and C corporations don't have this limit.
Management Structure: Default LLC vs. LLC With an S Corp Election
An LLC can be run by its members directly (member-managed) or by a hired manager (manager-managed). Either way, the paperwork stays light. Most states don't require annual meetings or written minutes for an LLC.
Electing S corp status doesn't change your legal structure. An LLC that elects S corp taxation is still an LLC under state law and still follows the LLC's own management rules, not a corporation's.
What changes is on the tax side: You'll need payroll records, documentation showing your salary is reasonable, and a clear paper trail separating wages from distributions, plus an annual Form 1120-S filing.
Liability Protection: LLC vs. S Corp
Liability protection comes from your underlying entity, the LLC itself, not from the S corp tax election. Electing S corp taxation doesn't add or remove any liability protection; it only changes how the IRS taxes your profit. If personal asset protection is your main concern, focus on how well you maintain the LLC itself, not which tax election you make. The decision comes down to taxes, ownership rules, and how much administrative work you're willing to take on.
That protection isn't automatic or absolute. Courts can set it aside in cases like fraud or serious commingling of personal and business funds.
Does your State Affect the Decision? A Florida example
Federal rules for LLCs and S corps are the same nationwide, but your state's tax setup changes how much the S corp election actually saves you.
Florida has no personal income tax, which means Florida LLC owners already keep more of their pass-through profit than owners in states with high income tax rates. That doesn't eliminate the self-employment tax savings from an S corp election, since self-employment tax is a federal tax either way. Still, it does mean the state-level math looks different in Florida than it would in a state like California. A Florida freelancer or real estate agent weighing the switch should run the federal self-employment tax savings against the added payroll and accounting cost, keeping in mind that other state and local obligations, like sales tax or entity-level filings, may still apply.
If you're weighing this in a state with its own income tax, the same self-employment tax savings still apply; you'll just want to run your state's specific brackets alongside it. Swyft Filings' state guides cover the formation requirements for each state if you want the full picture.
Takeaway
Choosing between an LLC and an S corp election comes down to your profit level, your ownership plans, and how much paperwork you want to manage. Swyft Filings has helped 600,000+ businesses since 2015 get formed and stay compliant. Whether you're starting a new LLC, filing your S corp election, or converting an existing business, our specialists can help you get the paperwork right the first time.
Bibliography
- IRS. Single Member Limited Liability Companies. Accessed on July 28, 2026
- IRS. About Form 2553. Accessed on July 28, 2026
- IRS. Limited Liability Company. Accessed on July 28, 2026
- IRS. S Corporation Compensation and Medical Insurance Issues. Accessed on July 28, 2026
- IRS. Schedule SE (Form 1040), Self-Employment Tax. Accessed on July 28, 2026
- IRS. Self-Employment Tax (Social Security and Medicare Taxes). Accessed on July 28, 2026