Generally, subject to exemptions or reliefs, an acquisition of a chargeable interest in land (a land transaction), which includes the grant of a leasehold interest, is subject to stamp duty land tax (SDLT). An exemption from SDLT can be claimed where: • a land transaction is entered into between two bodies corporate that are, as at the SDLT—effective date of the transaction (usually completion), members of the same SDLT group • the anti-avoidance provisions do not apply to bar relief, and • SDLT group relief is claimed on the relevant land transaction return, SDLT1 using code 12 Although no supporting documents accompany the claim, the claimant purchaser must still retain evidence to prove its entitlement to SDLT group relief since HMRC may enquire into the validity of the claim for relief up to nine months after: • the filing date of the land transaction return (ie due date for filing a return), if the return is delivered on or before such date • the date on which the land transaction return was delivered (if delivered after the filing