The right structure depends on how you expect to own, fund and operate the business. An LLC and a corporation are state-law entities; their federal tax treatment is a related but separate decision. Start with those two questions rather than assuming one structure is always simpler or cheaper.

Separate the legal entity from its tax treatment

A domestic single-member LLC is generally disregarded as separate from its owner for federal income tax unless it elects corporate treatment. A domestic LLC with two or more members is generally taxed as a partnership unless it elects otherwise. Employment tax and certain excise tax rules can treat a single-member LLC separately.

A corporation is generally taxed as a C corporation unless it makes a valid S corporation election. An eligible LLC can also elect S corporation treatment. “S corporation” is a federal tax status, not simply another formation form you choose at the state filing counter.

S corporation eligibility includes limits on shareholders and stock classes. Nonresident alien shareholders are generally not permitted; a business with international founders should not assume the election is available. Tax elections have deadlines and consequences, so discuss them with a qualified tax adviser.

Ownership and management

An LLC uses membership interests and usually an operating agreement to define governance and economics. It can be member-managed or manager-managed, subject to state law and its documents. Flexibility still requires careful drafting, especially where owners have different voting rights, contribution obligations or distribution arrangements.

A corporation uses shares and a governance structure involving shareholders, directors and officers. Its certificate, bylaws, board actions and stock records matter. Forming the entity does not automatically issue founder shares, adopt an equity plan or transfer intellectual property into the company.

Fundraising can change the decision

Many institutional venture investors prefer a C corporation structure, often Delaware, because it fits familiar preferred-stock financing and governance arrangements. That is a market practice, not a rule that every startup must incorporate there.

An LLC can raise capital too, but pass-through tax treatment and investor-specific restrictions can complicate participation. If you anticipate institutional investment, discuss the proposed structure before issuing interests. Converting later can involve approvals, documentation, costs and tax consequences.

Tax is more than “pass-through versus double taxation”

C corporation income can be taxed at the company level and dividends can be taxed to shareholders. Pass-through treatment generally allocates income to owners, but it does not mean the income is tax-free or that owners owe tax only when cash is distributed.

Compare expected income, distributions, payroll, ownership, state taxes and cross-border reporting. Do not choose an S election solely from a generic promise of payroll-tax savings.

Where you operate still matters

Formation in one state does not necessarily avoid registration, taxes or licensing in another state where you do business. A company formed in Delaware may also need foreign qualification in its operating state. The requirements depend on its activities and each state’s rules.

Questions to answer before filing

  • Who will own the business, and are any owners outside the U.S.?
  • Will you seek institutional investment or issue employee equity?
  • How will profits be distributed or reinvested?
  • Where will the company operate?
  • Who will maintain approvals, tax filings and ownership records?

Use Notorio’s formation service once the structure is decided. A submitted request or payment is not itself confirmation that the state has formed the company.

Primary sources

General U.S. educational information, not individualized legal or tax advice.