[SDLTM13185] Calculation of Stamp Duty Land Tax (SDLT): Rent: Variable or uncertain rent: Turnover leases
Where all or part of the rent payable under a lease is linked to business results, such as figures of profit or turnover (‘turnover lease’), the rent is variable and will always be uncertain at the date of grant. For the purposes of calculating net present value (NPV) for the first five years, a reasonable estimate should therefore be made of the amount payable (FA03/S51(2)). This need not necessarily be a professional valuation, but evidence of the basis of the estimate must be kept in case of query. .