Log in and file your Stamp Duty Land Tax return
Log in to the HM Revenue and Customs (HMRC) Stamp Taxes Online service to file your Stamp Duty Land Tax (SDLT) return as a solicitor, agent or legal conveyancer.
If you’re filing a return for an additional residential property, choose code 04 when you pick a property type.
Before you start
You need to register for Stamp Taxes Online before you can file your SDLT returns online.
You cannot use the online service if you’re an individual buying property and you aren’t represented by a solicitor, agent or legal conveyancer. Complete a paper return instead.