We refer you to Practice Notes: IHT—residence nil rate band (see, in particular, section ‘Tapering provisions’) and IHT—residence nil rate band Q&As (see, in particular, section ‘Taper threshold’), which explain how the tapering provisions operate to reduce the available residential nil rate band (RNRB) for estates that exceed a threshold of £2m. You will see from these notes that, by virtue of sections 8D(1)(d)(5) and 49(1) of the Inheritance Tax Act 1984, the