HMRC’s requests for help from the Valuation Office Agency with residential property valuations in inheritance tax returns have risen by nearly 25%
According to research from TWM Solicitors, HM Revenue & Customs is increasingly challenging residential property valuations in inheritance tax (IHT) returns, with the number of cases referred to the Valuation Office Agency (VOA) rising 23.5% in the last year.
It found that referrals to the VOA in the 12 months to 30 September 2025 had risen from 11,845 to 14,631.
The VOA provides property valuations to help HMRC determine how much IHT is due.
Recovering revenue from incorrect residential property valuations
TWM says that HMRC’s increasing use of the VOA to scrutinise returns reflects its increased efforts to recover revenue from underreported and misvalued residential property.
According to HMRC figures, residential property accounted for 46.8% or £29.5bn of the net value of estates in the 2022/23 tax year.
Incorrect valuations can lead to tax evasion attempts
Sharp increases in tax burdens can lead to a rise in attempted tax evasion and avoidance.
As IHT receipts have risen by more than 61% to £8.3bn since 2020, HMRC is likely to be increasing scrutiny of returns to ensure the correct amount of tax is paid.
Laura Walkley, head of Private Client at TWM, said: “HMRC is clearly focusing on property valuations as a significant potential source of revenue. There has been a noticeable shift towards questioning figures submitted in IHT returns, rather than accepting them at face value.”
She added that executors of estates need to take expert advice so that they know exactly what HMRC requires from them when it comes to including a property valuation in an IHT return.
“If an executor fails to report a property value properly, there can be financial consequences for the estate, such as additional tax and interest to pay, potentially by the executor personally. You are advised to use a proper valuation from a RICS valuer rather than an estimate from a high street estate agent,” she explained.
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