LLC vs S Corp: Which Fits Your Business and When to Switch
LLC vs S corp is not an either-or choice. The LLC is the legal entity you form with a state; S corp is a federal tax status an LLC can elect. Start with a default-taxed LLC. Add the S corp election once profit clearly exceeds a reasonable salary for your work and every owner is a US citizen or resident.
That has a practical consequence. Electing S corp status does not convert your company at the state level. It keeps its name, its state filings and its liability protection. What changes is how the IRS taxes the profit and how you pay yourself.
LLC vs S corp at a glance
The table compares the same LLC two ways: on its default tax treatment, and after it elects S corp status.
| Criterion | LLC (default tax treatment) | LLC taxed as an S corp |
|---|---|---|
| What it is | A legal entity formed under state law | The same entity, with a tax election filed with the IRS |
| Federal income tax | Profit passes through to the owners’ personal returns | Profit still passes through to the owners’ personal returns |
| Social Security and Medicare | Working owners pay self-employment tax on their net earnings from the business | Paid through payroll on the owner’s salary only; distributions above that salary are not subject to it |
| How owners get paid | Draws, whenever the business can afford them | A reasonable salary through payroll first, then distributions |
| Who can own it | Anyone: individuals, companies, other LLCs, non-US owners; no limit on members | Only individuals who are US citizens or residents, certain trusts and estates; no more than 100 shareholders |
| Splitting profits | Flexible: the operating agreement can set the split | One class of stock, so distributions follow ownership percentages |
| Compliance effort | Lowest: profit is reported on the owner’s return (one owner) or a partnership return (two or more) | Higher: payroll every pay period, payroll tax returns, W-2s and a corporate return every year |
| Cost | State formation fee and annual state tax | The same state costs, plus payroll processing and corporate tax return preparation |
| Liability protection | Owners are shielded from the company’s debts and claims | Identical; the tax election does not change it |
| Privacy | Set by the state’s public filing rules | Identical; the election goes to the IRS, not onto the state’s public record |
| Governing law and courts | The formation state’s LLC law and courts (in Delaware, the Court of Chancery) | Identical |
Income tax, liability, privacy and courts do not change at all. The real decision is narrower than it first looks: self-employment tax savings on one side; payroll, ownership limits and less flexibility on the other.
What an S corporation actually is
An S corporation is a tax classification, not a type of company you register with a state. According to the IRS overview of S corporations, the election lets a corporation pass its income, losses, deductions and credits through to its shareholders, who pay tax at their individual rates. The original purpose was to spare small corporations from double taxation: tax on corporate profit, then tax again on dividends.
An LLC gets there by a different route. The IRS treats an LLC as an “entity eligible to elect” corporate treatment, so an LLC can file the S corp election (Form 2553) and be treated as a corporation from the date it takes effect. It does not need a separate classification election first. The IRS charges no fee for the S corp election.
LLC owners rarely need the S election to avoid double taxation, because a default-taxed LLC is already pass-through. The IRS page on LLC tax classification explains the defaults: a single-member LLC is disregarded and reported on the owner’s return, and an LLC with two or more members is taxed as a partnership. For LLC owners, the S corp election is about one thing: how much of the profit carries Social Security and Medicare tax.
Taxes: where an S corp saves money and where it doesn’t
Income tax: no change
Under both setups, the business’s profit lands on the owners’ personal returns and is taxed at their individual rates. That happens whether you take the money out or leave it in the company. Electing S corp status does not lower your income tax rate.
Self-employment tax: the real difference
On default treatment, a working owner pays self-employment tax on their net earnings from the business. The IRS sets the self-employment tax rate at 15.3%, made up of Social Security (which stops at an annual earnings cap) and Medicare (which does not).
As an S corp, you become an employee of your own company. Your salary carries the same Social Security and Medicare taxes, split between the company and you through payroll. Profit paid out above that salary, as distributions, is not subject to those taxes. That gap is the entire saving, and it is why people switch from an LLC to an S corp once the business is consistently profitable.
The salary rule that decides how much you save
The IRS requires an S corporation to pay reasonable compensation to an owner who works in the business before it pays that owner any distributions. In plain words: you cannot pay yourself a token salary and take the rest as distributions.
The IRS looks at where the company’s revenue comes from. Revenue earned by your own work points to salary. Revenue earned by employees who are not owners, or by capital and equipment, can properly come out as distributions. In practice:
- A solo consultant whose income comes almost entirely from their own hours has limited room for distributions, so the saving is smaller than it first looks.
- A business with staff or equipment doing much of the earning has more profit that is not payment for the owner’s labor, so the election tends to pay off more.
If the IRS decides a salary was unreasonably low, it can treat distributions as wages and assess the payroll taxes that should have been paid. Setting the salary is a judgment call that a qualified tax professional should help you document.
Costs that eat into the saving
The S election adds running costs that a default LLC does not have: a payroll service or payroll software, preparation of a corporate tax return each year, and in many states a registration for state unemployment insurance. Some states and cities also tax S corporations at the entity level or do not follow the federal election at all. There is no official break-even profit level. Whether the election pays off depends on your profit, a defensible salary for your role, your state’s treatment and what payroll and tax preparation cost you.
Ownership rules that can rule out an S corp
An LLC can be owned by almost anyone. The IRS notes that most states do not restrict LLC ownership and set no maximum number of members. The S corp election comes with strict limits. To qualify, the company must:
- be a domestic (US) entity;
- have only individuals, certain trusts and estates as owners, with no partnerships, corporations or non-resident alien owners;
- have no more than 100 shareholders;
- have only one class of stock.
The one-class rule matters more than it looks. A multi-member LLC taxed as a partnership can split profit however its operating agreement says, for example giving a capital investor a preferred return. Once the LLC elects S corp status, distributions have to follow ownership percentages. If your deal depends on an uneven split, the S election is likely the wrong fit.
The rules also bind you later. If an ineligible owner joins, such as a non-US partner or a holding company, the S election ends.
Compliance: what you take on with an S corp
A default LLC’s federal filing is light. A single-member LLC reports its profit on the owner’s personal return. A multi-member LLC files a partnership return and gives each member a statement of their share.
After the S election, the same LLC must:
- run payroll for working owners, withholding income tax and payroll taxes each pay period;
- file quarterly and annual payroll tax returns and issue W-2s;
- file an annual S corporation return (Form 1120-S) and give each owner a statement of their share;
- keep salary and distributions separate in the books.
Payroll needs an EIN. If your LLC does not have one yet, see how to get an EIN for your Delaware LLC. The IRS issues the number; check irs.gov for current timing.
Your state obligations do not change. A Delaware LLC that elects S corp status is still a Delaware LLC: it keeps its registered agent and still owes Delaware’s annual LLC tax, which is due either way.
Liability and privacy: no difference
The S election is a tax filing. It does not add or remove liability protection, and it does not change what appears on the state’s public record.
Can you be sued personally if you have an LLC?
The LLC protects your personal assets from the company’s debts and from claims against the company. It does not protect you from everything. You can still be personally liable for:
- harm you cause yourself, such as your own negligence or misconduct;
- debts you personally guarantee, which landlords and lenders often require from small businesses;
- payroll taxes withheld from wages and not paid over, which the IRS can collect from the people responsible for paying them (relevant once you run S corp payroll);
- company obligations, if a court finds you treated the LLC as your personal wallet, for example by mixing company and personal money.
The same exposure applies whether your LLC is taxed by default or as an S corp. A separate bank account, clean records and a written operating agreement do more for your protection than any tax election.
When to elect S corp status, and when timing matters
Most owners start on default treatment and elect later. The election tends to fit when:
- you work in the business and its profit is steady, not a single strong year;
- profit is well above what you would pay someone else to do your job;
- every owner is an individual who is a US citizen or resident;
- you do not need uneven profit splits between owners;
- you are ready to run payroll and file a corporate return every year.
It tends not to fit when the business is losing money or barely profitable, when owners include companies or non-US persons, or when you plan to bring in investors on special terms.
The IRS sets a firm window. The election must be filed no more than 2 months and 15 days after the start of the tax year it should apply to, or at any time during the year before. For a calendar-year LLC that wants S corp treatment for 2027, that means any time from now through March 15, 2027. For a brand-new company, the window runs from the start of its first tax year, so a company formed late in the year has only a short period. All owners must consent to the election.
Missing the window usually means waiting a year. The IRS does offer relief for late elections in some situations; a qualified tax professional should review whether yours qualifies.
When neither option is the right fit
An LLC, with or without the S election, suits owner-operated businesses that want pass-through taxation. Two groups should choose differently.
- Founders raising venture capital. Investors typically expect preferred stock, stock option plans and institutional or foreign shareholders. An S corp cannot offer any of that, and many funds avoid investing in LLCs. A Delaware C-Corp is the standard choice.
- Businesses that will only operate in their home state. A Delaware LLC that does business in another state must also register there and pay that state’s fees, so you carry two sets of filings. If you have no investors, no multi-state plans and no specific reason to choose Delaware law, forming the LLC in your home state is usually simpler. The S election works the same way either way.
If you do choose Delaware, the first step is the same whatever your tax plans: form the Delaware LLC, then decide on the S election once your profit picture is clear.
Founders outside the US
If you are not a US citizen or resident, the S corp option is closed to you. The IRS does not allow non-resident aliens to be S corporation shareholders, and an LLC with even one non-resident owner cannot make the election.
Your LLC stays on default treatment: a single-member LLC is disregarded for income tax, and a multi-member LLC is taxed as a partnership. Foreign-owned LLCs have their own IRS reporting, so the paperwork differs from what US owners file. The guide to Delaware LLCs for non-US residents covers that setup, and getting an EIN as a non-resident explains the tax ID side.
If you later move to the US and become a tax resident, or a US partner wants S corp treatment, eligibility can change. A qualified tax professional should look at the timing.
Frequently Asked Questions
Can a single-member LLC be an S corp?
Yes. A single-member LLC owned by an eligible individual can elect S corp status. The owner then becomes an employee of the LLC for payroll purposes and takes distributions on top of a reasonable salary.
Can I undo an S corp election?
Yes. Owners can revoke the election, and it also ends automatically if the company stops meeting the eligibility rules. Once it ends, the company generally has to wait several years before electing again unless the IRS consents, so treat the election as a multi-year decision.
Does electing S corp status change my LLC’s name or state filings?
No. The company remains an LLC under state law with the same name, registered agent and annual state obligations. It is worth reviewing your operating agreement afterward, because provisions on profit splits and owner payments may need to match the S corp rules.
Related guides
Have a question about your specific situation? Contact us. This article is for informational purposes only and does not constitute legal or tax advice.
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