Tax avoidance schemes: Stamp Duty Land Tax scheme reference number (AAG4(SDLT))

Use form AAG4(SDLT) to disclose your Stamp Duty Land Tax (SDLT) tax avoidance scheme reference number to HMRC.


Let HMRC know your scheme reference number by email

Let HMRC know your scheme reference number by postal form

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You should use this form if you expect to have an SDLT advantage and have received an 8 digit scheme reference number from:

  • HMRC
  • a scheme promoter
  • the client of a scheme promoter

You can either:

  • email the form
  • print the form, fill in by hand and post to HMRC

Email HMRC to ask for this form in Welsh (Cymraeg).

Forms to disclose tax avoidance schemes
Forms you must use to notify HMRC of a tax avoidance scheme, arrangement or proposal.

Published 1 October 2014
Last updated 1 June 2016 + show all updates
  1. An online forms service is now available.
  2. First published.