LLC vs. S-Corp: legal structure and tax treatment
An LLC is a legal entity. S-Corp status is a federal tax election. An eligible LLC can choose S-Corp taxation, so the two are not competing legal forms.
How an LLC is taxed by default
A domestic single-member LLC is generally disregarded for federal income tax. Its activity may appear on Schedule C, E or F, depending on what it does. A domestic LLC with two or more members is generally taxed as a partnership unless it elects corporate treatment. Special exceptions can apply.
What changes with an S election
An eligible entity files Form 1120-S and provides shareholder Schedule K-1s. Income generally passes through to shareholders whether or not cash is distributed. Certain entity-level federal taxes and state taxes can still apply.
Employment taxes depend on the activity
Self-employment tax treatment for a default-taxed LLC depends on its activity and the owner’s status. Rental and investment income are not automatically treated like active business income. In an S-Corp, a working shareholder may need reasonable wages before receiving non-wage distributions.
Ownership rules can change the decision
S corporations generally have no more than 100 shareholders, one class of stock and eligible owners. Individuals who are nonresident aliens are not eligible shareholders, while certain trusts and estates can qualify. An LLC’s operating agreement must also fit the election’s requirements.
Compare the added work with the benefit
An S election can add payroll, a separate return and shareholder basis tracking. Compare total costs, ownership plans, state obligations and expected earnings. Do not make the choice from a fixed profit threshold or a salary percentage.
Keep legal and tax advice connected
The tax election does not itself change the LLC’s state-law form. Ask an attorney about governance and liability questions, and coordinate the election with tax planning.
Sources and further reading
Reviewed September 15, 2026. General information; your facts and tax year determine the treatment.
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