There has been an obligation on promoters of schemes designed to avoid SDLT to provide details to HMRC since August 2005. However, those disclosure requirements only applied to commercial properties. Now, however, the regime extends to residential transactions as well.

From 1 April, the disclosure rules apply to schemes concerning residential property with an aggregate value of at least £1m (as well as the existing provisions in respect of non-residential property with an aggregate value of at least £5m). If the property is mixed, then disclosure will apply if the value of the residential property is at least £1m, or the value of all the properties at least £5m.