Registration as a Tax Adviser: What Legal Advisers Need to Know and Do

Why It Matters

Non‑compliant firms face registration penalties and heightened exposure to client claims for mis‑calculated SDLT, while the rule reshapes how conveyancers position tax‑related services.

Key Takeaways

• Registration required for any firm filing SDLT returns for clients
• Compliance hinges on AML supervision, solvency and clean criminal record
• Client letters must explicitly limit tax‑advice scope
• Regulators’ bodies argue the rule misclassifies conveyancers
• Firms should audit policies, train staff and flag complex transactions

Pulse Analysis

HMRC’s February 2026 guidance expands the definition of a tax adviser to include any party that interacts with the tax authority on a client’s behalf and receives payment. For conveyancing firms, this means that submitting stamp‑duty land tax (SDLT) returns—an activity traditionally viewed as clerical—triggers registration. The rule is not optional; firms must secure an agent services account by 18 May 2026 and demonstrate compliance with anti‑money‑laundering supervision, solvency, and clean‑record standards. Failure to register can result in enforcement action, while the mere label of "tax adviser" raises client expectations for comprehensive tax counsel, potentially exposing firms to liability for mis‑calculations.

The regulatory push has sparked push‑back from the Council for Licensed Conveyancers (CLC) and the Society of Licensed Conveyancers (SLC), both of which argue that conveyancers are not tax advisers and that the requirement conflates transactional support with professional tax advice. Their objections highlight a broader tension between tax administration objectives and sector‑specific professional boundaries. As the deadline approaches, firms should monitor ongoing dialogue between HMRC, the CLC, and the SLC, as any policy adjustments could affect registration timelines or criteria.

Practically, firms can mitigate risk by revising engagement letters to delineate the scope of SDLT services, flagging complex transactions that may warrant referral to specialist tax advisers, and conducting internal audits of AML controls and director eligibility. Training staff on the new regulatory landscape and embedding trigger criteria into onboarding processes will help ensure compliance and protect against client claims. By proactively aligning policies with HMRC’s expectations, conveyancers can safeguard their operations while navigating the evolving tax‑adviser framework.