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RNRB and the downsizing allowance

Shared from Tax Insider: RNRB and the downsizing allowance
By Malcolm Finney, May 2026

Malcolm Finney outlines the downsizing relief rules in the inheritance tax residence nil-rate band.   

The inheritance tax (IHT) legislation provides for a ‘residence nil-rate band’ (commonly referred to as the RNRB), which is effectively an allowance available for offset against an individual’s estate on death. Currently, it is worth a maximum of £175,000. 

The RNRB broadly applies where on the death of the owner of a home, it is ‘closely inherited’. ‘Closely inherited’ refers to inheritance by lineal descendants (e.g., children). Perhaps unusually, a stepchild or an adopted child qualifies for RNRB purposes as a ‘child’. 

Typically, the home must pass under the deceased’s will (or by way of intestacy).  

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