LLC vs. S corp vs. C corp: what's actually different

DIRECT ANSWER

An LLC, an S corporation and a C corporation are not necessarily three competing choices. An LLC is a legal business structure created under state law. An S corporation is a federal tax status available to eligible businesses. A C corporation is a corporation taxed under the regular corporate income tax rules, which is how any corporation is taxed unless it elects S status. That means an LLC may be able to elect S corporation taxation.

BLUEPRINT BY REGISTIXReviewed by RegistixLast reviewed OCT 2026

Business structures and tax elections can have legal and tax consequences that depend on your ownership, state, income and specific circumstances. Blueprint explains the concepts. A CPA or attorney can evaluate how they apply to your business.

Most of the confusion here comes from comparing things that live in two different systems. Your state decides what kind of business entity you are. The IRS decides how that entity is taxed. Keep those two questions apart and the rest gets much simpler.

THE SIMPLE VERSION
  • LLC: a legal structure. Your state creates it. On its own, it says nothing about which tax rules apply beyond the defaults.
  • S corporation: a federal tax status. An eligible corporation or LLC gets it by filing IRS Form 2553.
  • C corporation: a corporation taxed as its own taxpayer. The corporation pays tax on its profit, and shareholders pay tax again on dividends.
  • So the real questions are two: what legal entity do you have with your state, and how does the IRS tax it?
HOW IT ACTUALLY WORKS

Two separate questions: legal structure and tax treatment

Your state decides whether you are a sole proprietorship, a partnership, an LLCLLC An LLC (limited liability company) is a business entity registered with a state that exists separately from its owners. or a corporation. The IRS says your form of business determines which federal income tax return you file, and that legal and tax considerations both go into choosing one.

An LLC is a business structure allowed by state statute, and each state sets its own rules. For federal taxes, the IRS treats an LLC as a corporation, a partnership, or part of its owner's own return (a "disregarded entity"), depending on how many members it has and what elections it makes.

A corporation is also created under state law. For federal taxes, it is a C corporationC corporation A C corporation is a corporation taxed as a separate taxpayer under the regular corporate rules, which is how a corporation is taxed unless it elects S status. The corporation pays federal income tax on its profit, and shareholders may pay tax again on dividends. unless it is eligible for and elects S corporationS corporation An S corporation is a federal tax status, not a kind of company you form with your state. An eligible corporation, or an eligible LLC, elects it with IRS Form 2553, and its income then generally passes through to the owners' personal returns. status.

Side by side

LLC, S corporation and C corporation compared. General federal rules only. State rules vary.
What you want to knowLLCS corporationC corporation
What it actually isA legal business structure created under state law. Rules vary by state.A federal tax status. An eligible corporation or LLC elects it by filing IRS Form 2553.A corporation taxed as its own taxpayer. A corporation without an S election is a C corporation for that year.
What owners are calledMembers.Shareholders. An LLC that elects S status still has members under state law.Shareholders.
General federal income tax treatmentDepends on members and elections. By default, one member: disregarded, reported on the owner's return. Two or more: taxed as a partnership. It can elect to be taxed as a corporation.Generally pass-through. Income and losses are reported on the shareholders' personal returns. The business can still owe tax at the entity level in certain cases.The corporation pays tax on its taxable income. Shareholders pay tax again on dividends, and the corporation gets no deduction for paying them.
Payroll considerationsBy default, a one-member LLC's owner pays self-employment tax like a sole proprietor. Members of an LLC taxed as a partnership are not W-2 employees and generally pay self-employment tax on their share. Hiring employees means payroll.Owners who work in the business must be paid reasonable compensation as wages before non-wage distributions. That means running payroll.Officers who perform services and receive payments for them are employees, and those payments are wages. That means running payroll.
Administrative complexityState formation filing and any ongoing state requirements. Federal filing depends on how it is taxed.A corporate return (Form 1120-S), a Schedule K-1 for each owner, and payroll. The SBA notes S corporations still follow a corporation's filing and operational processes.A corporate return (Form 1120) and payroll for owners who work in it. The SBA notes corporations require more extensive record-keeping, operational processes and reporting.
Ownership restrictionsNo maximum number of members, and most states don't restrict who can be one. A few businesses, such as banks and insurance companies, generally can't be LLCs.No more than 100 shareholders. Generally only individuals, certain trusts and estates, and certain tax-exempt organizations. No partnership, corporation or nonresident alien shareholders. One class of stock.The S corporation limits on number of shareholders, types of owners and classes of stock don't apply.
When to look into it furtherWhen you want the business legally separate from you. Start with what an LLC is and how your state handles it.When there is real profit and the owners work in the business. Talk to a CPA about reasonable compensation and payroll before electing.When you plan to bring in outside investors, issue more than one class of stock, or eventually sell. Talk to a CPA and an attorney.

How an LLC can be an S corporation

This is the part that trips people up. An LLC is eligible to be taxed as a corporation. An eligible LLC that files Form 2553 on time is treated as a corporation as of the date the S election takes effect, and it does not need to file Form 8832 separately. With the IRS, it then files Form 1120-S, and S corporation rules apply to it. With the state, it is still an LLC.

So "LLC or S corp?" is usually the wrong question. The useful questions are: which legal entity fits the business, and once you have one, how should it be taxed? The guide on whether an LLC should elect S corp taxation walks through the second question.

Why a C corporation is not automatically the bad option

C corporations get called the double-tax option, and that part is real. The IRS says the corporation's profit is taxed to the corporation when earned and taxed to shareholders when distributed as dividends, and the corporation gets no deduction for the dividends it pays.

But the S corporation restrictions don't apply to a C corporation. A business that wants owners who can't hold S corporation stock, such as other corporations or partnerships, or that wants different classes of stock for different owners, can't be an S corporation. The SBA notes corporations can raise money by selling stock and lists raising money and an eventual sale among the situations where a corporation can be a good choice.

None of that makes it the right choice for a resale business. It means the answer depends on who will own the business, how it will be funded and how profit will be paid out.

Where people get confused

  • "I formed an LLC, so I'm an S corp." No. Forming an LLC does not make an S election. The election is a separate IRS filing.
  • "An S corp is a type of LLC." No. An S corporation is a tax status. A corporation or an eligible LLC can have it.
  • "An S corp doesn't pay tax." Its income is still taxed, on the owners' personal returns, and the business can still owe tax at the entity level in certain cases.
  • "My state treats it the same way." Not necessarily. States differ in how they treat LLCs and S corporations. Check your state.

What structure does not change

None of these structures registers you to collect sales tax or gives you resale documentationResale certificate A resale certificate is documentation used under applicable state rules when buying qualifying inventory for resale, so the supplier does not collect sales tax on that purchase.. Those are state processes that sit beside your entity, not inside it. Read EIN vs resale certificateEIN vs resale certificate An EIN is a federal tax ID for your business. A resale certificate is a state-level document used when buying qualifying inventory for resale. if those two still blur together.

Whichever structure you choose, keep business money in a business bank accountBusiness bank account A business bank account is an account in the company's legal name, and it is where the business's provable financial history comes from. and keep monthly books. The IRS says you need an EINEIN An EIN (Employer Identification Number) is your business's federal tax ID number, issued by the IRS. if you have employees or operate a partnership, a corporation or an LLC, with a narrow exception for some single-member LLCs.

EXAMPLES
Hypothetical exampleOne business, three setupsIllustrative only, no tax figures. An owner flips appliances. Setup one: a single-member LLC with no election. For federal income tax, the LLC is disregarded and its profit goes on the owner's own return, as with a sole proprietorship. Setup two: the same LLC files Form 2553. It is still an LLC with the state, files Form 1120-S, and pays the owner a reasonable wage through payroll before any distributions. Setup three: the owner incorporates and makes no S election. The corporation files Form 1120 and pays tax on its profit, and the owner pays tax on any dividends.
WHERE PEOPLE GET BURNED
  • Picking a structure from a social media post instead of from your own numbers, owners and state.
  • Filing an S election without a plan for payroll and a reasonable wage for the owners who work in the business.
  • Assuming the federal answer is also the state answer.
  • Forming the entity, then running the money through a personal account anyway. See LLCLLC An LLC (limited liability company) is a business entity registered with a state that exists separately from its owners..
WTF DOES THAT MEAN?

Terms in this guide

2.3LLC2.9C corporation2.8S corporation2.5Resale certificate2.4EIN vs resale certificate2.7Business bank account2.2EIN3.6P&L6.6Write-off

Sources

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