What is Stamp Duty Land Tax?
Stamp Duty Land Tax is payable by the buyer when acquiring a chargeable interest in land or property in England and Northern Ireland. The amount of tax due depends on the type of property, purchase price and the purchaser’s circumstances, and SDLT must normally be reported and paid to HMRC within 14 days of the transaction’s effective date.
As the tax is self-assessed, it is the buyer’s responsibility to calculate and pay the correct amount. For many clients this is carried out by their legal adviser or conveyancer acting on their behalf.
Why Legal Professionals Need SDLT Knowledge
Legal professionals often manage SDLT returns as part of property closings, but changes in HMRC guidance mean that SDLT advice is more technical than a simple calculation of tax due. SDLT can be affected by multiple factors such as whether the property is residential or non-residential, mixed use, subject to reliefs or part of a larger portfolio.
In addition, from May 2026 HMRC’s expectations may treat the preparation and submission of SDLT returns as a form of tax advice, requiring conveyancers and legal firms to assess whether they must meet tax adviser registration requirements in order to submit returns for clients.
