Who this is for: Non-US founders, French ones especially, choosing the structure for their American venture. You have read that the LLC is simpler and the C-Corp is for startups. Both statements are true and neither one decides anything. The decision lives in how you will take money out, who will invest, and what your home country does with each structure.
Start with the comparison most articles bury:
Question | LLC (default taxation) | C-Corp |
US federal tax on profits | None at entity level; profits flow to you and are taxed as your US-source income | 21% at the corporate level |
Tax when profits reach you | Already taxed as they arise, whether or not you withdraw them | Withholding on dividends: 30% default, reduced to 15% or 5% under the France-US treaty |
You personally file in the US | Yes, a 1040-NR, with ECI rules deciding what is taxable | Not for dividends alone; withholding settles it |
Investor readiness | US venture funds generally will not invest in one | The expected vehicle for fundraising and stock options |
Annual compliance for a foreign owner | Form 5472 + pro-forma 1120 for a foreign-owned single-member LLC | Form 1120, plus 5472 for related-party transactions |
The classic mistake | Assuming pass-through means tax-free | Assuming 21% is the whole story before money leaves |
Everything below unpacks that table, then adds the piece US-focused articles skip entirely: what France does with each structure, which for a French-resident founder often decides the whole question.
Table of Contents
How the LLC really taxes a foreign owner
A single-member LLC is disregarded for US tax; a multi-member one is a partnership. Either way, profits are taxed to the owners directly, and for a non-resident owner the operative concept is effectively connected income (ECI): if the LLC runs a genuine US trade or business, your share of its profit is US-taxable to you personally, at graduated rates, filed on a 1040-NR. Three practical consequences follow:
- You become a US taxpayer personally. The LLC does not shield you from filing; it hands you the filing. Many French founders discover this in year two, with penalties attached.
- Pass-through is not tax-free. Profits are taxed as they arise even if you leave every dollar in the business. An LLC reinvesting aggressively still generates personal US tax bills for its owner.
- A purely offshore operation can owe nothing. An LLC with no US trade or business, no US office, no dependent agents, selling services from France to US clients, may generate no ECI at all. This is the structure’s genuine sweet spot, and also the most misunderstood one: the analysis is factual, fragile, and worth documenting properly.
The paperwork nobody warns you about
A foreign-owned single-member LLC files Form 5472 attached to a pro-forma 1120 every year, reporting transactions with its foreign owner, capital in, distributions out, loans either way. The penalty for skipping it is $25,000 per year, and the IRS assesses it automatically. The LLC that felt like the light option carries the heaviest single penalty in this comparison.
How the C-Corp really taxes a foreign owner
The C-Corp pays 21% federally on its profits, plus state tax where applicable. You are not taxed personally while profits stay in the company, which is exactly what growth companies want. Money reaching you as dividends triggers withholding: 30% by default, 15% under the France-US treaty for portfolio holders, 5% for a French company owning at least 10%. Two structural notes:
- The double layer is real but manageable. 21% then 15% on distribution lands near French corporate-plus-dividend outcomes, and salary, which is deductible for the company, changes the arithmetic for founders actually working in the business.
- Retention is the C-Corp’s superpower for a foreign founder. No personal US filing obligation arises from retained earnings; a French founder who never distributes may never file a US personal return at all. The corporation absorbs the compliance.
The French layer: where the decision usually tips
US articles compare the two structures inside the US box. A French-resident founder lives outside it, and France’s view is asymmetric:
Issue | LLC | C-Corp |
How France sees the entity | Ambiguous. The LLC has no French twin; case law has treated LLCs as opaque in some configurations, transparent in others, and the analysis is structure-by-structure | Clean: a corporation, opaque, like any SA. Dividends are dividends |
Risk of double taxation | Real when France treats as opaque an entity the US taxed as transparent: the same profit can be taxed twice with imperfect credit relief | Managed by the treaty’s dividend articles; the credit mechanics are well-worn |
French filings for the founder | Potentially the profit itself, plus foreign-account and structure disclosures | Dividends received, plus the usual foreign-account disclosures |
Comfort of your French accountant | Low to medium; expect questions | High; the object is familiar |
This is the section that turns a coin-flip into a decision. A French resident actively running a profitable US operation through an LLC is choosing the one structure whose French treatment is least predictable. The same founder behind a C-Corp has boring, known outcomes on both sides. Boring, in cross-border tax, is the premium product.
Decision guide, by founder profile
Your situation | Likely answer | Why |
Raising from US investors, stock options planned | C-Corp, almost always | Funds expect it; QSBS and option mechanics assume it |
Solo French founder, US-facing services, no US office or staff | LLC often works well | Possibly no ECI; light structure; but document the analysis and never skip Form 5472 |
Profitable trading business you actively run from France | C-Corp deserves the edge | Retention control, treaty-clean dividends, no French-classification gamble |
Holding US real estate | Neither by default; take advice | Estate tax exposure and FIRPTA change the calculus entirely |
Testing the market, revenue under low six figures | LLC to start, designed for conversion | Cheap to run; the conversion path to C-Corp is standard when investors arrive |
Changing your mind later
The escape hatches matter as much as the choice. An LLC can elect corporate taxation (Form 8832) without changing its legal form, or convert outright to a Delaware corporation when a fundraise demands it; both paths are routine, though timing has tax consequences once the business carries value. Moving the other way, C-Corp to LLC, is a taxable liquidation and rarely worth it. Practical rule: when in doubt, err toward the structure you can leave cheaply, and for pre-revenue ventures that is usually the LLC with a conversion plan written down.
The numbers on one page
Item | Figure (2026) |
C-Corp federal rate | 21% |
Dividend withholding to France | 15% portfolio; 5% for a 10%+ corporate shareholder; 30% without treaty relief |
Branch profits tax on a US branch of a French company | 30% by statute, 5% under the treaty, one more reason branches are rare |
Form 5472 penalty | $25,000 per missed year, plus $25,000 per further 30 days after IRS notice |
LLC owner personal filing | 1040-NR where ECI exists |
EIN | Required for both structures; obtainable from France without an SSN, see EIN vs ITIN vs SSN |
The second tax system: states
Federal comparison done, a founder then meets the layer the internet forgets: states tax on their own terms, and the choice of formation state is a smaller decision than the map of states where you actually operate.
State | Relevant quirk for a foreign founder |
Delaware | No tax on out-of-state income, but an annual franchise tax; the C-Corp convention lives here |
Wyoming | No corporate or personal income tax, minimal fees; popular for holding LLCs |
Florida | No personal income tax; LLC profits to a non-resident owner escape state income tax |
California | Taxes by economic presence and charges LLCs an $800 minimum plus a gross-receipts fee; selling into CA can create obligations wherever you formed |
New York | City plus state layers; an NYC office changes the arithmetic materially |
The working rule: form where convention or simplicity dictates, then let your revenue map, employees and inventory decide where you register and pay. A Wyoming LLC with a California customer base has not avoided California; it has only delayed the conversation.
A worked example: $200,000 of profit under each roof
Numbers anchor the philosophies. Take $200,000 of annual profit, a solo French owner, no US state complications, treaty applied.
- C-Corp, distributing everything: the company pays 21%, $42,000. The remaining $158,000 leaves as a dividend with 15% treaty withholding, $23,700. You net $134,300, an all-in cost around 33%, before French taxation of the dividend with its own credit mechanics.
- C-Corp, distributing nothing: the company pays $42,000, keeps $158,000 working. Your personal US bill: zero. Your French bill on undistributed profits: generally zero too. This deferral is the growth case in one line.
- LLC with ECI: the $200,000 is your personal US income now, taxed at graduated 1040-NR rates whether or not you touch it, plus the French side taxing you as the profits arise, with credit relief that works better in theory than in cash-flow. No entity tax, but no deferral either.
- LLC without ECI (the pure offshore service case): potentially no US income tax at all, the outcome that makes the structure famous. The entire result rests on the facts staying clean: no US office, no dependent agent, no inventory on US soil.
Same profit, four outcomes from roughly zero to a third. The structure is not a formality; it is the single largest tax decision the venture will make before it earns its second million.
Setup and running costs, side by side
Item | LLC | C-Corp |
Formation | Days; a few hundred dollars in most states | Days; similar, plus bylaws, board minutes, stock issuance |
Annual legal upkeep | Registered agent, annual report | The same, plus corporate formalities investors expect kept current |
Annual tax filings | 5472 + pro-forma 1120 (single member); 1065 + K-1s (multi) | 1120, state returns, payroll filings once salaried |
Typical all-in annual cost, lean year | Low four figures | Low-to-mid four figures |
Cost of getting it wrong | $25,000 (5472) leads the league | Penalties spread across more, smaller filings |
What you declare in France, under each structure
The founder stays a French tax resident, so every US choice has a French echo. The echoes differ sharply:
French obligation | With a C-Corp | With an LLC |
Dividends received | Declared as foreign-source dividends; the 30% flat tax (PFU) applies with a credit for US withholding under the treaty | Only meaningful if France treats the LLC as opaque; if transparent, there are no dividends, there is your profit share |
The profit itself, undistributed | Not taxable to you while retained | Potentially taxable as it arises if France follows the transparent reading, the ambiguity discussed above |
Foreign account reporting | The company’s US bank account is the company’s; you declare accounts you personally hold | Same rule, but founders with signature power over LLC accounts should take advice on scope |
Structure disclosures | Shareholdings above thresholds appear in wealth-adjacent filings where applicable | The classification question itself is worth papering with your French adviser, before the administration asks it |
The pattern repeats the article’s theme: the C-Corp’s French echo is settled and known; the LLC’s depends on a classification France decides case by case. The premium product, again.
The five mistakes we unwind most often
- The LLC formed by an online service with the founder as a US resident. The formation package assumed an American customer; every downstream filing inherits the error.
- Two years of missed 5472s discovered at bank onboarding. $50,000 of exposure for an entity that earned nothing yet; relief exists but is not automatic.
- Dividends paid without treaty documentation. The C-Corp withheld 30% because no W-8BEN was on file; reclaiming the extra 15% takes a refund filing that outlives everyone’s patience.
- The French accountant learning about the LLC at year three. The French declaration questions, transparency, accounts, the works, arrive retroactively, with interest.
- Salary paid from the C-Corp with no payroll setup. A founder-employee needs actual US payroll mechanics; a wire labeled salary is how both countries’ problems start.
None of these is exotic. All five come from sequencing the US formation before the cross-border advice, which is the entire argument for having the structure conversation first.
Fundraising mechanics: why funds insist on the C-Corp
The investor-readiness row in the opening table deserves its reasons, because founders regularly try to argue with it. US venture funds avoid LLCs for structural causes, not fashion: a pass-through entity sends taxable income up to partners who include tax-exempt institutions allergic to exactly that; preferred-share mechanics, option pools and vesting live in corporate law with decades of Delaware precedent; and the QSBS exemption, which can make early shareholders’ gains federally tax-free within limits, applies only to C-Corp stock. A foreign founder pitching with an LLC is not disqualified, but the term sheet will carry a conversion condition, executed on the investors’ timeline instead of yours, at your expense. If institutional money is in the plan at all, forming the C-Corp first, or the LLC with a written conversion plan, is cheaper than converting under a closing deadline. The same logic runs in reverse for founders certain they will never raise: without institutional money in the picture, the C-Corp’s main structural advantage narrows to the retention play, and the LLC’s lightness gets its full weight back in the decision.
How Expand CPA fits in
We sit on both sides of this decision daily: a Franco-American firm with offices in Paris, New York and Tel Aviv, structuring US entities for French founders and then living with the consequences at tax time, on both returns. The full LLC formation guide covers the mechanics once you have chosen; if you are still choosing, the structure conversation takes an hour and prevents years of unwinding. Talk to us.
Frequently Asked Questions
Can I have an LLC taxed as a C-Corp and get the best of both?
You can, via the Form 8832 election, and it is sometimes right, notably to fix the French classification problem while keeping LLC legal flexibility. You get corporate taxation, treaty-clean dividends, and the LLC wrapper. What you do not get is investor-readiness: funds still want an actual Delaware corporation.
Do I need a US visa or presence to own either structure?
No. Both are fully available to non-residents with no US immigration status. What you need is the right tax identification, an EIN for the entity and possibly an ITIN for you, and both are obtainable from France.
Does Delaware matter as much as the internet says?
For a C-Corp raising venture money, Delaware is the convention and fighting it costs more than it saves. For a small LLC, the formation state matters less than the states where you actually create tax presence; a Wyoming LLC selling into California has California problems, not Wyoming ones.
What about the S-Corp everyone mentions?
It does not belong in this comparison, and knowing why saves reading time: the S-Corp election, the pass-through corporation US accountants recommend to their domestic clients, is simply unavailable to non-resident alien shareholders. A French founder cannot own S-Corp stock without breaking the election for everyone. When an American article praises the S-Corp’s self-employment-tax magic, translate it as follows: not for you, and no loss, since the advantages it offers largely address a payroll-tax problem non-residents do not have. Your real menu is the one this article compares: the LLC, the C-Corp, and the LLC electing corporate treatment. If an adviser proposes an S-Corp anyway, treat it as a useful diagnostic: they have not yet registered that the shareholder is not a US person, and the rest of their plan deserves the same second look.
Related Expand CPA guides
- LLC for foreigners: starting a business in the US
- EIN vs ITIN vs SSN: which US tax ID you need
- FEIN vs EIN: the difference
- Creating a subsidiary in France
Disclaimer: US federal figures cited (21% corporate rate, 30% branch profits tax, treaty rates, $25,000 Form 5472 penalty) verified August 2026 against IRS sources and the France-US treaty. State taxes and individual facts vary. General information, not tax or legal advice.
