What Stamp Duty Land Tax (SDLT) payments apply for an off plan property purchase that is subsequently sold? You pay Stamp Duty Land Tax (SDLT) when you buy houses, flats and other land and buildings over a certain price in the UK This page explains that where a lease was exempt from stamp duty land tax under certain provisions, its subsequent assignment will be treated as the grant of a new lease. Stamp Duty Land Tax: leasehold sales. From: HM Revenue & Customs. The new owner pays a lump sum for the assignment of the lease and pays SDLT on this amount. A purchaser's rights under a contract for a land transaction may be transferred to a. (SDLT) purposes as a. assignment or other transaction between sub-seller. Sdlt assignment commercial lease Use the SDLT calculators to work out how much to pay on freehold or leasehold property New SDLT calculator for freehold transactions. A checklist for the assignment of a lease. SDLT and the grant of a lease SDLT and the grant of a lease. Deed of assignment of lease Deed of assignment of. The assignment of the lease will. The original lessee may need to include an indemnity in an assignment to protect against additional SDLT liability being. This guide sets out the basic principles of stamp duty land tax (SDLT) on commercial property. SDLT is charged on the substance of a property transaction rather than. working. €e †rst assignment of such a lease was. SDLT on the sale leg of the transaction, but there is no tax for Tradeco on the leaseback as it can claim.