UK

How do I claim the residence nil-rate band?

£175,000
2024/25 RNRB limit
IHT435
Required form
2 years
Sale deadline for downsizing
Direct descenda
Eligible beneficiaries
The Short Answer

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 Text

In 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

1

Confirm the deceased owned a qualifying residence and that it passes to direct descendants (or qualifies under the downsizing rules).

2

Calculate the available RNRB, accounting for tapering if the net estate exceeds £2 million.

3

Complete form IHT435 (Residence Nil-Rate Band) and submit it with the full IHT return (IHT400) to HMRC.

4

If claiming the downsizing addition, provide evidence of the former residence sale/gift and how equivalent assets were passed on.

5

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.