If you choose to downsize to a cheaper property or sell your home to pay for care, you may worry you’ll lose valuable inheritance tax (IHT) allowances.

More than six million adults are thinking about or planning to downsize at some point in the next four years, according to analysis by Suffolk Building Society.

But experts say the ability to claim inheritance tax relief based on the value of your previous home, known as downsizing relief, is not widely known – which could result in a higher than necessary tax bill levied on your estate when you die.

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buy-to-lets.

Jessica Graham, solicitor, private client department at Brabners Personal, said: “Some of my clients have two properties that they’ve lived at some point and ask which one they should claim the residence nil rate band against. In this case, the executors get to choose and it can’t be claimed against both.”

The property the executors choose is usually the most valuable, to maximise the RNRB benefit.

For estates more than £2 million, the RNRB will reduce by £1 for £2 over the £2 million threshold.

Consequently, this means no RNRB is available at all for an individual’s estate with a value of more than £2,350,000 or £2,700,000 for couples.

When pensions become liable for IHT from 6 April 2027, more households could wind up losing their RNRB.

avoid inheritance tax completely.

HMRC will also expect proof that the equivalent value was left to children or grandchildren so keeping a clear paper trail avoids unnecessary stress at an already difficult time.

Moore said: “People often underestimate how valuable the residence nil-rate band can be and how easy it is to accidentally lose it. If you’re considering downsizing or moving into care, it’s wise to speak to a financial planner or tax specialist before selling, so they can structure things in the most tax-efficient way and ensure the relief isn’t lost.”