LLC vs C-Corp: Key Differences for International Founders

Every international founder forming a US company faces the same first fork in the road: LLC or C-Corp. Get it wrong, and the fix isn’t a form — it’s a conversion process that costs time, money, and sometimes a tax bill.

The frustrating part is that most articles answer with “it depends” and stop there. This one goes further: it lays out exactly what the differences are — taxation, investors, compliance, cost — so you can see which factors apply to your situation before you talk to a professional.

One thing this article won’t do is tell you which to pick. That genuinely depends on your circumstances, and anyone who answers without knowing them is guessing.

The short version

The rest of the article unpacks each row.

How each is taxed — the fundamental difference

C-Corp: the company is a taxpayer itself. It pays federal corporate income tax (currently a flat 21%) on its profits. When it distributes profits to shareholders as dividends, shareholders are taxed again — for non-resident shareholders, typically via US withholding tax, at a rate that depends on any tax treaty between the US and their country. This is the “double taxation” C-Corps are known for. In practice, many startups never pay dividends (profits are reinvested), which is part of why the structure doesn’t deter venture-backed companies.

LLC: by default, the entity itself pays no federal income tax. Profits “pass through” to the owners. For a non-resident owner, whether US tax is actually owed depends on facts like whether the LLC is engaged in a US trade or business, whether income is effectively connected to the US, and treaty positions — analysis that is specific to each situation and firmly in qualified-professional territory.

The common misconception worth flagging: “LLC = no US taxes for foreigners” is not a rule. It’s an outcome that applies in some fact patterns and not others.

Filing obligations exist either way. A foreign-owned single-member LLC files Form 5472 with a pro forma 1120 annually even with zero activity (penalties start at $25,000). A C-Corp files Form 1120 annually, plus Form 5472 if it has significant foreign ownership and reportable transactions.

Investors: where the choice often gets made for you

If you plan to raise from US venture capital funds, the market has effectively standardized the answer: Delaware C-Corp. The reasons are structural:

• Many funds are restricted (by their own LP agreements or tax positions) from holding pass-through entities like LLCs
• Standard startup instruments — SAFEs, priced equity rounds, stock option pools — are all built around corporate stock
• Accelerators like Y Combinator require or convert companies to Delaware C-Corps

Founders who form an LLC and later raise institutional money typically go through an LLC-to-C-Corp conversion — doable, but it adds legal cost, time, and potential tax complexity right when a funding round is already consuming both.

If you’re not raising from US VCs — you’re running an agency, an e-commerce business, a bootstrapped SaaS — this entire section may simply not apply to you.

Compliance and administration

The C-Corp’s formalities aren’t just paperwork theater — investors and acquirers will audit them in due diligence. A C-Corp with sloppy records is a C-Corp with deal problems. For a solo founder with no plans to raise, that overhead buys little.

Cost comparison over time

Formation costs are similar for both. The divergence shows up annually:

• LLC (Delaware): $300 franchise tax + registered agent + Form 5472/1120 preparation
• C-Corp (Delaware): franchise tax (method-dependent — the “assumed par value” calculation often reduces what high-share-count startups owe versus the default method) + annual report fee + registered agent + Form 1120 preparation + the ongoing cost of maintaining corporate formalities

Neither is expensive in absolute terms at the start; the C-Corp’s costs scale with complexity (option pools, multiple share classes, board changes).

Switching later: possible, but not free

• LLC → C-Corp: common (usually right before a funding round), via statutory conversion or merger depending on state. Involves legal work and can have tax consequences depending on the LLC’s history.
• C-Corp → LLC: rarer and generally harsher tax-wise — liquidating a corporation can trigger tax at both entity and shareholder level.

The asymmetry is worth knowing: starting as an LLC keeps the door to C-Corp open at a cost; starting as a C-Corp and reversing is the more expensive direction.

Patterns by founder type

These are observations about what founders in each situation commonly weigh — not recommendations:

• Raising from US VCs / joining a US accelerator: the market standard is the Delaware C-Corp, and investors will usually require it
• Agency, consulting, freelancing from abroad: the LLC’s simplicity and pass-through default are usually the draw
• E-commerce / Amazon FBA: LLCs dominate this segment; the analysis centers on the trade-or-business tax questions above
• Bootstrapped SaaS, undecided on fundraising: this is the genuinely hard case — some founders start as LLCs and convert when fundraising becomes real; others start as C-Corps to avoid the conversion. Which trade-off is right depends on the probability of raising, timeline, and home-country tax treatment — a professional conversation.

FAQ

Can a non-resident own 100% of either entity?

Yes. Both LLCs and C-Corps can be fully foreign-owned with no US citizen or resident involved. (One exception to know: an S-Corp — a different tax election — cannot have non-resident owners, which is why it’s absent from this comparison.)

Do both need an EIN?

Yes, both need an EIN for banking and taxes — obtainable without an SSN (guide).

Does the state choice change this comparison?

The federal tax treatment is the same everywhere. State fees and formalities vary; Delaware is the reference point here because it’s the most common choice for both entity types among international founders.

Can I have both?

Yes — some founders operate an LLC and later add or convert to a C-Corp, or use one as a subsidiary of the other. Structures like this have real tax and legal implications and warrant professional design.

Cooperative is not a law firm and does not provide legal, tax, or financial advice. This article is a general, factual comparison for informational purposes only. Which entity type fits your situation depends on your specific circumstances — consult a licensed attorney or tax professional before deciding.