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LLC vs S-Corp vs C-Corp: Choosing the Right Entity as a Founder

The entity you pick shapes how you are taxed, how you raise money, and how much paperwork you carry for years. There is no universally best choice — only the right one for your plan.

By the Acorn 9 teamReviewed by a licensed CPA on the Acorn 9 team

"Should I be an LLC, an S-corp, or a C-corp?" is the first real tax decision most founders face — and the most common one to get wrong by copying someone whose plan was different from theirs. Here is the honest comparison.

The LLC: flexible and simple

An LLC is easy to form and, by default, "pass-through" — profits flow to your personal return and are taxed once. It is excellent for a small number of owners and cash-flow businesses.

  • Pros: minimal formality, pass-through taxation, flexible ownership.
  • Cons: not eligible for QSBS; owners typically pay self-employment tax on profits; venture investors generally will not buy into one.

The S-corp: a tax election, not a different animal

An S-corp is a tax status an LLC or corporation can elect. Its appeal is self-employment-tax savings: owners pay themselves a "reasonable salary" and take remaining profit as distributions not subject to payroll tax.

  • Pros: can reduce self-employment tax for profitable owner-operated businesses.
  • Cons: strict limits — 100 shareholders max, U.S. individuals only, one class of stock. Those rules rule out most venture-backed startups and foreign founders.

The S-corp deal-breaker. An S-corp cannot have a non-resident-alien owner or a corporate/VC shareholder. The moment you take foreign investment or institutional money, the election breaks. Plan around that early.

The C-corp: built for scale

A C-corp is its own taxpayer. It is the structure venture investors expect and the only one eligible for QSBS — but its profits can be taxed twice (at the company, then again as dividends).

  • Pros: unlimited and any-type owners, clean equity for fundraising, QSBS eligibility.
  • Cons: double taxation on distributed profits, more compliance.

A simple decision guide

  1. Raising venture capital or want QSBS? → Delaware C-corp. See why founders choose Delaware.
  2. Profitable, owner-operated, no outside equity? → LLC, possibly with an S-corp election.
  3. Foreign founder or foreign investors? → C-corp; the S-corp is off the table.

The entity is a tool, not an identity. The right one falls out of three questions: will you raise, who will own you, and how will profits reach you? Answer those and the choice is usually clear.

The short version

  • LLCs are flexible and simple but are not eligible for QSBS.
  • S-corps can save on self-employment tax but have ownership restrictions.
  • C-corps enable venture funding and QSBS but face double taxation.
  • The right entity depends on whether you will raise, who owns you, and how profits are paid.

This article is general education, not tax or legal advice. Tax rules change and depend on your specific facts — confirm your situation with a licensed CPA before acting. Reviewed by a licensed CPA on the Acorn 9 team.

FAQ

Frequently asked questions

Should my startup be an LLC, an S-corp, or a C-corp?
It depends on three questions: will you raise outside capital, who will own the company, and how will profits reach you? If you're raising venture capital or want QSBS, a Delaware C-corp is the standard answer. If you're profitable, owner-operated, and not taking outside equity, an LLC — possibly with an S-corp election — usually serves you better. Foreign founders or foreign investors rule out the S-corp entirely.
Can a foreign founder use an S-corp?
No. An S-corp cannot have a non-resident-alien shareholder, and it also can't have corporate or VC shareholders. If you're a foreign founder or expect foreign or institutional investment, the S-corp election is off the table — a C-corp is the usual structure.
Is an S-corp a different kind of company than an LLC?
No — an S-corp is a tax election, not a separate entity type. An LLC or a corporation can elect S-corp status with the IRS. The appeal is self-employment-tax savings: owners pay themselves a reasonable salary and take remaining profit as distributions not subject to payroll tax.
Why do venture investors require a C-corp?
C-corps allow unlimited owners of any type (funds, foreign investors, other companies), support preferred stock and standard financing documents, and are the only structure whose stock can qualify for the QSBS gain exclusion. LLC pass-through taxation also creates tax complications for funds, so VCs generally won't invest in one.
What is the main downside of a C-corp?
Double taxation: the corporation pays tax on its profits, and shareholders pay tax again when profits are distributed as dividends. For a venture-backed startup reinvesting everything, this rarely bites day-to-day — but for a profitable owner-operated business paying profits out to its owner, it's a real cost.