UKHow do I claim the residence nil-rate band?
You claim the residence nil-rate band (RNRB) by completing the IHT435 form when administering an estate, provided the deceased owned a qualifying residence passed to direct descendants and meets other conditions in the Inheritance Tax Act 1984.
What the Law Says
The residence nil-rate band (RNRB) is a tax allowance that reduces the inheritance tax (IHT) bill when a person’s main residence is passed on death to their direct descendants. It was introduced by the Inheritance Tax Act 1984, as amended, and applies to deaths on or after 6 April 2017.
The RNRB is available only if the deceased owned a 'qualifying residential interest' — typically their main home — and it is inherited by 'lineal descendants', such as children, grandchildren, or stepchildren. It cannot be claimed if the property is left to a trust (unless certain exceptions apply) or to non-descendants like siblings or friends.
The allowance is transferable between spouses or civil partners: any unused RNRB from the first death can be added to the surviving partner’s allowance, potentially doubling the benefit. The maximum RNRB per person is £175,000 for 2024/25, but it tapers by £1 for every £2 over the £2 million estate threshold.
If the deceased sold or gave away their home on or after 8 July 2015 (e.g., moved into care), they may still qualify under the 'downsizing addition' — provided assets of equivalent value are passed to direct descendants and certain conditions are met within two years of death.
Statutory TextIn this Chapter, 'residence nil-rate band' means an amount equal to the lower of— (a) the value of the deceased's estate immediately before death, and (b) the amount specified in subsection (2).
— Inheritance Tax Act 1984, s. 8D — Residence nil-rate band
What to Do
Confirm the deceased owned a qualifying residence and that it passes to direct descendants (or qualifies under the downsizing rules).
Calculate the available RNRB, accounting for tapering if the net estate exceeds £2 million.
Complete form IHT435 (Residence Nil-Rate Band) and submit it with the full IHT return (IHT400) to HMRC.
If claiming the downsizing addition, provide evidence of the former residence sale/gift and how equivalent assets were passed on.
File within 12 months of the end of the month in which the person died — late filing may incur penalties.
Sources
Not legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: 2026-06-08.