One of the most valuable inheritance tax reliefs available to property owners remains widely misunderstood — and frequently unclaimed.
The Residence Nil-Rate Band (RNRB) was introduced in April 2017 to help families pass on the family home without an excessive inheritance tax (IHT) bill. Yet seven years on, many property owners still have no idea it exists, how it works, or what conditions must be met to claim it.
For anyone who owns residential property and plans to leave it to their children or grandchildren, the RNRB can provide an additional £175,000 of tax-free allowance per person — on top of the standard nil-rate band of £325,000. For a married couple or civil partners, that means a combined allowance of up to £1,000,000 before any IHT becomes payable.
That is a significant sum. And yet, many estates fail to claim it.
How the Residence Nil-Rate Band Works
Every individual in England and Wales has a standard nil-rate band (NRB) of £325,000. This is the amount that can pass on death without attracting IHT at 40 per cent. The RNRB sits alongside this, providing an additional allowance specifically linked to residential property.
To qualify, three conditions must be met:
1. The deceased must have owned a qualifying residential property.
This means a property that has been the individual’s home at some point. It does not need to be the main residence at the date of death, but it must have been lived in — not simply an investment property.
2. The property must be left to direct descendants.
Direct descendants include children (including adopted and stepchildren), grandchildren, and their spouses or civil partners. Leaving the property to a sibling, niece, nephew, or friend does not qualify.
3. The estate must not exceed the taper threshold.
The RNRB begins to taper for estates valued above £2,000,000. For every £2 above this threshold, the RNRB is reduced by £1. This means that for an individual with an estate worth £2,350,000 or more, the RNRB is eliminated entirely.
The Transferable Element
Like the standard nil-rate band, any unused RNRB can be transferred to a surviving spouse or civil partner. This is one of the most powerful aspects of the relief and is frequently overlooked.
If the first spouse to die leaves everything to the survivor — as many couples do — their full RNRB of £175,000 remains unused. When the surviving spouse subsequently dies and leaves the property to the children, they can claim both their own RNRB and the transferred RNRB from the first death.
The result: a combined RNRB of £350,000, plus two standard nil-rate bands of £650,000, giving a total IHT-free allowance of £1,000,000.
Downsizing and the Downsizing Addition
A common concern amongst older homeowners is what happens if they downsize to a smaller property or move into care before death. The good news is that HMRC introduced a “downsizing addition” to address precisely this situation.
If a person sells or gives away their qualifying property after 8 July 2015, the RNRB can still apply — provided the smaller property (or other assets of equivalent value) is left to direct descendants. The downsizing addition ensures that people are not penalised for making sensible decisions about their living arrangements in later life.
However, the rules are not straightforward. The calculation involves comparing the RNRB that would have been available had the original property been retained, and any shortfall can be claimed against other assets in the estate. Professional advice is strongly recommended.
Common Mistakes That Reduce or Eliminate the RNRB
Despite its apparent simplicity, there are several ways in which the RNRB can be lost or reduced:
Leaving property to a discretionary trust.
If the property is left to a discretionary trust rather than directly to the children, the RNRB does not apply. The beneficiaries must inherit the property (or a share of it) outright, or through a trust that qualifies — such as a bare trust or an immediate post-death interest trust.
Estate exceeds £2,000,000.
The taper threshold catches many people by surprise, particularly in the South East of England where property values have risen significantly. Life insurance policies written in trust, pension death benefits, and business assets can all push the estate value above the threshold. Careful planning can mitigate this.
Not updating the Will.
If a Will was written before April 2017 and does not specifically leave the property to direct descendants, the RNRB may not apply. Reviewing and updating the Will to reflect the RNRB conditions is essential.
Gifting the property during lifetime without reservation of benefit.
If a homeowner gives their property to their children but continues to live in it rent-free, HMRC may treat the property as still forming part of the estate under the “gift with reservation of benefit” rules. This can create complications for the RNRB claim.
Planning Opportunities
For those with estates approaching or exceeding the £2,000,000 taper threshold, there are several legitimate planning strategies:
Lifetime gifting of non-property assets.
By reducing the overall estate value below £2,000,000, the full RNRB can be preserved. Gifts made more than seven years before death fall outside the estate entirely.
Pension planning.
Pension funds are typically outside the estate for IHT purposes. Maximising pension contributions and drawing from other assets first can help keep the estate below the taper threshold.
Life insurance in trust.
Writing life insurance policies into trust removes the proceeds from the estate. This is a straightforward step that many policyholders overlook.
Business Property Relief.
For business owners, assets qualifying for Business Property Relief (BPR) at 100 per cent are excluded from the estate value for RNRB taper purposes. This can be a significant advantage for trading company shareholders.
The Frozen Threshold Problem
Both the standard nil-rate band and the RNRB have been frozen since 2009 and 2020 respectively. The Government has confirmed that the freeze will continue until at least April 2028. With property values and inflation continuing to rise, more estates are being caught by the taper threshold each year.
This makes proactive planning more important than ever. What may have been a comfortable position five years ago could now result in a significant IHT liability if the estate has grown beyond the threshold.
What You Should Do Now
If you own residential property and intend to leave it to your children or grandchildren, take these steps:
1. Review your Will. Ensure it is structured to qualify for the RNRB. If your Will predates April 2017, it almost certainly needs updating.
2. Calculate your estate value. Include all assets — property, savings, investments, life insurance, and business interests — to determine whether the taper threshold applies.
3. Consider your trust arrangements. If you are using trusts, check that they qualify for the RNRB. Discretionary trusts generally do not.
4. Take professional advice. The interaction between the RNRB, the standard nil-rate band, the taper threshold, and other reliefs is complex. A qualified estate planner can help you structure your affairs to maximise the available allowances.
The Residence Nil-Rate Band is one of the most generous inheritance tax reliefs available. But it only works if you plan for it.
The Legacy Wills Company specialises in estate planning for property owners and business owners. To discuss how the RNRB applies to your situation, book a free discovery call today.