CARF and CRS 2.0: preparing your first cryptoasset tax return
ArticleCARF and CRS 2.0 introduce cryptoasset tax reporting and stricter HMRC penalties. With the first filing deadline on 31 May 2027, we look at key considerations for firms.
02 Jul 2026 5 min read

In HMRC v BlueCrest, the Supreme Court dismissed BlueCrest’s appeal, providing a binding interpretation of the salaried member rules to LLP members, and the interpretation of Conditions A and B. Investment management LLPs and professional services partnerships should review whether their members are taxed as employees or self-employed.
The case of HMRC v BlueCrest has been progressing through the courts since 2022, with an ultimate tax liability of around £200m. BlueCrest, an investment management LLP, argued that its members should be taxed as self-employed individuals rather than employees. HMRC maintained that the relevant members met the conditions under the salaried member rules, introduced in 2014, and should therefore be taxed as employees.
The Court agreed with HMRC, finding that members’ pay constituted disguised salary and that the LLP’s governance structure did not give individual members significant influence over the partnership. Applying the correct legal test, the question of whether any individual members fail Condition B has been remitted to the First-tier Tribunal for further assessment. Condition A was determined conclusively against BlueCrest at every level and is not being reconsidered.
Under the salaried member rules, three conditions determine whether an LLP member should be treated as an employee for income tax and national insurance contributions (NIC) purposes. A member who fails any single condition is taxed as a self-employed member.
This condition is met if at least 80% of expected remuneration is fixed or varied without reference to overall LLP profits or losses, or not in practice affected by them. The Supreme Court found that members did receive a disguised salary, noting the points below.
Remuneration that’s primarily calculated through each member’s own investment portfolio performance, rather than the LLP’s overall profits, is disguised salary.
BlueCrest was consistently profitable so the profit cap never applied. As such, the Court rejected this as a genuine link to overall firm profits.
Condition A is designed to identify genuine profit-sharing characteristic of traditional partnerships, not remuneration structures that merely retain a nominal link to firm profits. The Supreme Court found that this case did not.
This condition is met if the LLP agreement and enforceable rights or duties do not give the member significant influence over the affairs of the partnership as a whole.
The court found that Condition B rests solely on formal, legally enforceable rights under the LLP agreement or statute and informal influence doesn’t carry any weight. However, where authority is formally delegated under the agreement, then the rights held by those delegates can qualify. The court established the following principles.
This condition is met if a member’s capital contribution is less than 25% of their expected disguised salary for the year. BlueCrest conceded this point throughout, and it was not in issue.
This is the first Supreme Court ruling on the salaried member rules and provides definite guidance for how to interpret Conditions A and B. As such, it ends any prospect of arguing that de facto influence or individual trading significance can be a substitute for formal governance rights.
The decision has sector-wide implications for investment management LLPs and professional services partnerships. Any LLP where remuneration is driven by individual rather than firm-wide performance, or where corporate members hold dominant voting rights, should review its position in light of this judgment.
There are three practical steps to consider:
For more information on the salaried member rules, contact Ami Shah or Terry Heatley.
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