For international entrepreneurs seeking a robust, tax-efficient, and internationally recognised corporate vehicle, two structures consistently emerge at the top of the list: the US Limited Liability Company and the UK Limited Liability Partnership. Both offer liability protection, operational flexibility, and pass-through taxation under certain conditions. But they serve different purposes, operate in different legal environments, and interact differently with the tax systems of their owners' countries of residence.

Choosing between them — or, in many cases, using both — requires a detailed understanding of their respective characteristics.

The US LLC: flexibility and global reach

The US LLC is a creature of state law, with each of the 50 states offering its own variation. For non-residents, the most significant feature is federal tax treatment. A single-member LLC owned by a non-resident alien is classified as a disregarded entity by the IRS. This means the entity itself is not subject to US federal income tax on non-US-source income. The income passes through to the owner and is taxed — or not — according to the rules of their country of tax residence.

The operational flexibility of the LLC is extraordinary. The operating agreement — the internal governance document — can be drafted to accommodate virtually any management structure, profit-sharing arrangement, or decision-making framework. Members can agree to allocate profits and losses in any manner they choose, regardless of their ownership percentages. Fiduciary duties can be modified or eliminated by agreement (in Delaware and several other states).

The entity can be member-managed or manager-managed, with no requirement for a board of directors or corporate officers. The US LLC also provides access to the American banking system — the deepest, most stable, and most globally connected financial infrastructure in the world. A properly documented LLC can open accounts at major US banks, access SWIFT and ACH networks, and operate in dollars with the full range of commercial banking services.

The compliance obligations are manageable but real. Form 5472 (for foreign- owned disregarded entities), state annual reports, registered agent fees, and — since 2024 — Beneficial Ownership Information reporting to FinCEN. The total annual administrative cost for a well-managed LLC ranges from approximately $500 to $2,000, depending on the state of formation and the complexity of the filing requirements.

The UK LLP: European credibility and tax transparency

The UK Limited Liability Partnership is a body corporate with legal personality, created under the Limited Liability Partnerships Act 2000. Unlike a traditional partnership, the LLP provides limited liability to its members — meaning that members are not personally liable for the debts and obligations of the LLP beyond their capital contributions. For tax purposes, the UK LLP is transparent. Profits are allocated to the members and taxed at their individual rates.

This is broadly similar to the pass-through treatment of the US LLC, but the mechanics differ. In the UK, each member is treated as if they carried on a trade individually, and their share of the LLP's profits is taxed as trading income. For non-UK-resident members, the key question is whether the LLP has UK-source income. If the LLP's income is entirely non-UK-sourced and the non-resident members do not perform their duties in the UK, their share of profits may not be subject to UK tax.

This makes the UK LLP an attractive vehicle for international consulting and professional services businesses that serve non-UK clients. The LLP must be registered with Companies House and must file annual accounts and a confirmation statement. These filings are public, which means that certain information about the LLP — including the identity of its members, its registered office, and its financial statements — is available in the public record.

This is a significant difference from the US LLC, where formation filings in many states do not identify the members. The credibility of a UK LLP in European and international markets is strong. The UK's legal system, regulatory framework, and commercial reputation make a UK- registered entity immediately recognisable and trustworthy to counterparties, banks, and regulators across Europe and beyond.

Key differences: a structural comparison

The differences between the US LLC and the UK LLP can be organised along several dimensions. On privacy, the US LLC generally offers more. Formation filings in states like New Mexico and Wyoming do not identify members or managers. The UK LLP, by contrast, must disclose its members publicly at Companies House. On taxation, both offer pass-through treatment, but the mechanisms differ. The US LLC's disregarded entity status is simpler for single-member structures.

The UK LLP's member-level taxation is well-understood but requires careful management of profit allocations and reporting. On banking, the US LLC provides access to the dollar-denominated US banking system. The UK LLP provides access to the sterling and euro banking systems, with strong relationships available at UK clearing banks. Both are viable for international transactions, but the US system offers greater depth and dollar liquidity.

On compliance costs, the US LLC is generally cheaper to maintain. Annual costs for a Wyoming LLC can be as low as $110 (registered agent fee plus annual report fee). A UK LLP requires Companies House filings, annual accounts preparation, and — depending on turnover — potential audit requirements. The annual cost of maintaining a UK LLP ranges from approximately £1,000 to £5,000, depending on the complexity of the accounts.

On credibility, the UK LLP has an advantage in European markets. For businesses that invoice EU-based clients, a UK entity carries familiar and respected credentials. For businesses focused on global markets, particularly the Americas, the US LLC may carry more weight.

Using both: the multi-jurisdictional approach

In many cases, the optimal solution is not to choose between the two but to use both as part of a coordinated multi-jurisdictional architecture. A US LLC can serve as the treasury and invoicing entity for non-European clients, while a UK LLP handles European operations and client relationships. The two entities can be structured to work together seamlessly — with intercompany agreements, consistent transfer pricing, and coordinated compliance.

This approach offers the best of both worlds: the banking depth and privacy of the US system for dollar-denominated operations, and the European credibility and regulatory familiarity of the UK system for sterling and euro operations. The key is ensuring that the architecture is coherent — that each entity has a genuine business purpose, that the intercompany arrangements are at arm's length, and that the overall structure is defensible under the tax rules of every relevant jurisdiction.

Conclusion

At Fidelys Partners, we regularly implement both US LLC and UK LLP structures as part of our clients' international architectures. The selection is never made in isolation. It is always a function of the client's complete situation — their tax residency, their client base, their banking needs, and their long-term strategic objectives. Both vehicles are powerful. The art lies in deploying them together.

— Fidelys Partners —