6 inheritance tax mistakes that could trigger an HMRC investigation
The number of inheritance tax (IHT) investigations opened by HMRC has reached a six-year high according to new data. During the 2025-26 tax year, the tax office opened 4,940 formal IHT investigations, which is an 18% increase on the previous year. At the same time, nearly 5,000 further estates were referred to HMRC’s compliance team
