Question 1

What is the HMRC tax adviser registration requirement?

Accepted Answer

From 18 May 2026, any firm that submits SDLT returns on behalf of clients must be registered with HMRC as a tax adviser. This includes solicitors, conveyancers, and accountants who file SDLT returns as part of property transactions.

Question 2

Do solicitors need to register as tax advisers?

Accepted Answer

Yes, if your firm submits SDLT Land Transaction Returns to HMRC on behalf of clients, you must register as a tax adviser by 18 May 2026. This applies to all conveyancing firms that handle stamp duty as part of the completion process.

Question 3

What happens if I don’t register as a tax adviser by May 2026?

Accepted Answer

After 18 May 2026, unregistered firms will be unable to submit SDLT returns to HMRC electronically. This means you cannot complete property transactions that require SDLT filing, potentially blocking your clients’ purchases.

Question 4

What do I need to register as a tax adviser with HMRC?

Accepted Answer

You need an HMRC Agent Services Account, your firm must be supervised for Anti-Money Laundering (AML), you must have no outstanding tax liabilities, and no relevant individuals can be subject to HMRC sanctions. Our free compliance checker assesses your readiness.

Question 5

How long does tax adviser registration take?

Accepted Answer

The registration process typically takes 2-4 weeks once all requirements are met. Given the 18 May 2026 deadline, firms should begin the process immediately to allow time for resolving any issues such as obtaining AML supervision or settling outstanding tax matters.

Tax Adviser Registration Checker

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