BlueCrest in the Supreme Court: a closer look at the ruling for LLPs
In our previous insight, we examined the Supreme Court’s decision in HMRC v BlueCrest Capital Management (UK) LLP [2026] UKSC 18 and the immediate implications for LLPs operating within the salaried member rules. This article takes a closer look at the Court’s reasoning and the principles emerging from the judgment, particularly in relation to significant influence and disguised salary.
The decision is the most significant judicial consideration of the salaried member rules since their introduction in 2014 and will be relevant to LLPs across the professional firms sector and beyond.
Background
Historically, LLP members benefited from being treated as partners for tax purposes even where their working arrangements more closely resembled employment. Parliament considered that some LLPs were being used to secure the tax advantages of partnership status while avoiding the employment tax consequences that would otherwise apply.
The Finance Act 2014 introduced the salaried member rules, which set out three conditions. Broadly:
- Condition A: at least 80% of a member’s remuneration consists of disguised salary;
- Condition B: the member does not have significant influence over the affairs of the LLP; and
- Condition C: the member’s capital contribution is less than 25% of their expected disguised salary.
In BlueCrest, it was accepted that Condition C was satisfied. The appeal therefore focused entirely on Conditions A and B.
Condition B: the source of significant influence
The most significant aspect of the judgment concerns Condition B.
The First-tier Tribunal had previously found that certain portfolio managers and desk heads exercised significant influence because of the importance of their investment decisions, their managerial standing and their practical influence within the organisation. The tribunal looked beyond formal governance arrangements and adopted what it considered to be a realistic examination of the facts.
Rejecting that practical, fact-based approach, the Supreme Court held that Condition B requires consideration of whether a member’s rights and duties give them significant influence over the affairs of the LLP. This directs attention towards legally enforceable rights and duties arising from the LLP’s constitutional framework, including the LLP agreement, statutory provisions and formal delegations of authority.
Crucially, influence that exists only in practice is not sufficient. A member may be highly respected, commercially successful or capable of influencing colleagues. However, that influence will not count unless it derives from legally enforceable rights and obligations.
The Supreme Court did, however, clarify that relevant rights and duties are not limited solely to those contained in the LLP agreement itself. They may also arise from subsidiary agreements, delegated authority, implied contractual terms and rights or obligations recognised by common law or equity.
This aspect of the decision is likely to result in greater scrutiny of LLP constitutional arrangements and governance structures than has often been the case historically.
Condition B: what does significant influence mean?
The Court also provided important guidance on the nature of the influence required, emphasising that influence is not the same as control.
A member does not need to be able to dictate outcomes. Rather, the question is whether they can participate meaningfully in decisions affecting the affairs of the LLP. That participation must also have genuine practical and commercial significance.
The judgment suggests that the focus should generally be on managerial, strategic and governance matters affecting the LLP itself. Participation in board-level decisions, executive committee decision-making and other governance functions is therefore likely to be particularly relevant.
By contrast, operational responsibility alone will usually not be sufficient. The Court rejected the suggestion that portfolio managers exercised significant influence merely because they managed substantial pools of capital and generated considerable profits. Operational responsibility in one area of a business, even a critically important area, does not automatically amount to significant influence over the affairs of the LLP as a whole.
The judgment therefore draws a distinction between being important to an LLP’s commercial success and having significant influence over its affairs for the purposes of the legislation.
Applying the test
Applying these principles, the Supreme Court concluded that the tribunals below had made material errors of law, noting that the LLP agreement vested management and control of the firm and affairs in its board, with further delegated authority granted to its UK Executive Committee.
Ordinary LLP members had relatively limited governance rights and the Court considered that insufficient attention had been given to whether any influence exercised by individual members arose from legally enforceable rights derived from the LLP’s governance framework.
The judgment was particularly critical of reliance on factors such as:
- personal qualities;
- commercial success;
- contribution to profitability;
- standing within the organisation; and
- participation in informal management discussions.
While such factors may explain why an individual is influential in practice, they are not determinative for the purposes of Condition B.
Condition A: a purposive approach
The Supreme Court also addressed the application of Condition A.
The remuneration of portfolio managers and desk heads was largely determined by the profits generated by their individual portfolios or desks. In rejecting the taxpayer’s argument that those allocations were linked to the LLP’s overall profitability because total allocations could never exceed total profits, the Court emphasised that Condition A is intended to distinguish between remuneration characteristic of employees and remuneration that reflects a genuine share in the profits of the LLP as a whole.
A remuneration structure that principally rewards individual performance is much closer to an employment-style arrangement than a traditional partnership profit share.
The existence of an overall profit cap did not alter that conclusion and the Court held that the relevant allocations constituted disguised salary for the purposes of Condition A.
Practical implications
The significance of the judgment lies not only in its outcome but also in the analytical framework established by the Court.
In particular, LLPs may wish to review:
- whether members relied upon to fail Condition B possess meaningful governance rights;
- whether those rights are clearly reflected in LLP agreements and related governance documents;
- whether delegated authority is appropriately documented; and
- whether existing salaried member analyses remain appropriate in light of the Supreme Court’s reasoning.
The decision also reinforces the importance of reviewing remuneration arrangements and LLP agreements. Describing payments as profit share will not, in itself, prevent Condition A from applying where remuneration is primarily linked to individual performance rather than participation in the overall profits and losses of the LLP. For Condition B, the Court has confirmed that significant influence must derive from legally enforceable rights and obligations within an LLP’s governance framework rather than from commercial standing or practical influence alone.
Please contact Moore Kingston Smith’s corporate and business tax specialists or professional firms specialists if you would like to discuss how the decision may affect your organisation and members.
