IHTM30432 | Reconsideration by taxpayers: changed circumstances
From HM Revenue & Customs · Inheritance Tax Manual
The offer to pay tax on a higher value may reflect a correction to
the nature or character of the property or interest to be valued so that in effect we now have to value different property, or
other information on which the original valuation was based.
This may be because the taxpayers have received further information to the effect that, for example
property previously valued subject to a statutory tenancy should be valued with vacant possession
property is freehold (IHTM23001), not leasehold as previously thought, or
the extent of the deceased’s share or interest is greater than originally disclosed.
Refer the case to your manager if it seems that
the property to be valued may have to be redefined, or
the original valuation was based on wrong or misleading information.
In other cases you are free to consider whether to accept offers of tax on a higher value, e.g. on a sale of the property in question.
If the taxpayer offers to pay tax on what seems to be an unduly high value, you should consider a referral to the appropriate valuation specialist for advice.