IHTM16192 | Leases for life: what happens if consideration was given?
From HM Revenue & Customs · Inheritance Tax Manual
A lease granted for full consideration in money or money’s worth is not caught by .
If partial consideration is given, e.g. low rent or a modest premium, the lease is treated as a settlement and value of the property has to be apportioned. The proportions are fixed by reference to the values at the time the lease was granted.
So if only 25% of the open market rent was payable then one quarter of the value of the property will be included in the lessor’s estate () and three quarters in the lessee’s estate (.