The UK Supreme Court has ruled in favour of HM Revenue and Customs (HMRC) in a landmark case involving BlueCrest Capital Management, a decision expected to reshape the taxation of members of limited liability partnerships (LLPs) and increase payroll costs for many businesses.
The judgment is widely viewed as a significant victory for HMRC, giving the tax authority greater scope to classify LLP members as employees rather than self-employed partners. The change could result in higher income tax liabilities for affected individuals while also requiring firms to pay employer National Insurance contributions on their earnings.
The case focused on the “salaried members” rules introduced under the Finance Act 2014. These rules use three tests, known as Conditions A, B and C, to determine whether an LLP member should be treated as a genuine partner or taxed as an employee.
The Supreme Court examined Conditions A and B, adopting a stricter interpretation of both. Condition A considers whether at least 80% of a member’s earnings are effectively fixed or linked primarily to personal or divisional performance rather than the overall profits of the partnership. If so, the payments may be treated as disguised salary.
Condition B examines whether an LLP member has significant influence over the business. Members lacking meaningful involvement in the management or strategic direction of the partnership may now be more likely to fall within the employee tax rules.
Tax specialists say the financial consequences could be substantial, particularly because employer National Insurance contributions now stand at 15%. Firms with large numbers of LLP members could face sharply higher payroll costs if those members are reclassified.
Sean Drury, head of tax at advisory firm Blick Rothenberg, said the ruling extends well beyond the hedge fund at the centre of the case. He noted that many LLPs across the professional and financial services sectors, including law firms, accountancy practices and investment managers, may need to review their partnership structures.
According to Drury, businesses that relied on satisfying only one of the relevant tax tests may now need to revise their remuneration arrangements and governance structures to ensure compliance with HMRC’s interpretation.
The Supreme Court did not consider Condition C, which relates to the amount of capital contributed by LLP members, because it was not part of the appeal. However, tax experts expect HMRC to pay closer attention to those arrangements during future compliance reviews. Genuine capital contributions that place members at economic risk are likely to receive increased scrutiny.
The ruling comes as businesses are already facing rising employment costs following increases in employer National Insurance contributions. Tax advisers believe the decision may prompt many LLPs to reassess whether their current structure remains the most effective.
Experts also expect HMRC to increase enforcement activity in the wake of the judgment, making early reviews of partnership agreements, profit-sharing arrangements and capital contributions a priority for firms seeking to avoid future disputes with the tax authority.
