When you are acting as an executor, one of your primary concerns is whether HM Revenue & Customs (HMRC) will accept the figures you submit for probate. Understanding how they assess these valuations can help you prevent delays, enquiries, and unnecessary stress during the administration of the estate.
Why HMRC Reviews Probate Valuations
HMRC’s primary interest is ensuring the estate has been valued correctly for Inheritance Tax (IHT) purposes. As an executor, you have a statutory duty of care to act as a "prudent person of business," ensuring all assets are declared honestly. The total estate value determines:
- Whether Inheritance Tax is payable
- How much tax is due
- Whether full IHT reporting is required
- Eligibility for important tax savings like Business Relief or Agricultural Relief, which can reduce the taxable value of certain assets by 50% or 100%
If HMRC believes assets have been undervalued or that reliefs have been applied incorrectly, they have the authority to investigate and request further evidence.
The Legal Standard: Open Market Value
HMRC requires all assets to be valued at their open market value at the date of death. This is defined as the realistic price the asset might fetch if sold between a willing buyer and seller on the open market at that specific time.
It does not mean:
- Insurance value
- Replacement cost
- Original purchase price
- Sentimental value
Using incorrect valuation standards—such as relying on "new-for-old" insurance figures—is one of the most common causes of HMRC enquiries and can lead to an incorrectly inflated tax bill.
How HMRC Checks Valuations
1. Automated Risk Assessment
When probate forms are submitted, HMRC applies internal risk assessment checks. Estates may be flagged if:
- Values appear unusually low
- There are inconsistencies between asset types
- High-value assets are declared with minimal detail
- Digital assets (like cryptocurrency) or worldwide property (for those meeting the 10-year residency test) appear to be missing
2. The Valuation Office Agency (VOA)
For property valuations, HMRC often refers the case to the Valuation Office Agency (VOA). This is especially important when executors are claiming the Residence Nil-Rate Band, which can shelter up to £175,000 of a home's value from tax. The VOA may:
- Review comparable local sales data
- Challenge the declared property value
- Request supporting evidence
- Negotiate an agreed figure
3. Shares and Quoted Investments
Quoted shares are checked against official market prices at the date of death. HMRC will verify:
- Correct pricing date
- Application of correct valuation rules
- Proper averaging method where required
4. Personal Belongings (Chattels)
High-value personal chattels—the legal term for items like jewelry, art, silver, and antiques—are frequently scrutinized. HMRC may ask for:
- A professional valuation report
- Auction comparables
- Evidence supporting condition assessments
- Photographs
Simply estimating contents at a "round figure" without a professional inspection is a major trigger for investigation.
What Triggers an HMRC Enquiry?
Common triggers include:
- Significantly low property values compared to local sales
- Valuable homes declared with minimal contents value
- Omission of obvious asset categories, such as unused pension funds (which will be included in estates from April 2027)
- Conflicts between probate values and later sale prices
- Large discrepancies between insurance schedules and probate figures
What Happens If HMRC Disagrees?
If HMRC believes an asset has been undervalued, they may:
- Request further information
- Propose a revised valuation
- Negotiate through appointed agents
- Issue a formal determination
If additional Inheritance Tax becomes payable, interest on the tax due will be charged from the original due date. In cases of careless or deliberate misstatement, significant penalties can also apply.
How Executors Can Protect Themselves
You have a legal duty to take reasonable care when submitting estate values. You are entitled to take "proper advice" from qualified experts at the expense of the estate to ensure you meet this standard. To reduce the risk of challenge:
- Obtain professional probate valuations
- Ensure valuations reflect open market value at the date of death
- Keep supporting documentation
- Avoid guesswork on high-value items
- Ensure all asset categories, including jointly owned assets, are correctly considered
Why Professional Probate Valuations Matter
An experienced probate valuer understands:
- HMRC’s expectations
- Market evidence standards
- How assets perform at auction
- The difference between retail, insurance, and probate values
- The independent evidence needed to support compliance and give you peace of mind
Key Takeaways for a Compliant Submission:
- The Valuation Standard: Valuations must reflect a realistic sale price between a willing buyer and seller, not the insurance or replacement value.
- HMRC’s Review Process: HMRC uses a risk-based assessment to flag unusual or rounded figures. They often utilize specialized teams, such as the Valuation Office Agency (VOA) for property and the Shares and Assets Valuation (SAV) team, to test your figures against market evidence.
- The 14-Week Rule: For full IHT400 submissions, if HMRC has not contacted you within 14 weeks, you can generally assume your figures have been accepted.
- Protecting Yourself: You are legally entitled to take "proper advice" from qualified experts at the expense of the estate. This provides a defensible audit trail, shielding you from potential personal liability, interest, or penalties
Related Articles
What Happens when HMRC Challenges a Valuation?
How Capital Gains Tax Works During Probate
How to Establish the Value of an Estate
If you are currently dealing with an estate and require a probate valuation, Dawsons Auctioneers provide professional, HMRC-compliant reports for executors, solicitors and families across the UK. Our specialists assess house contents, jewellery, art and antiques, offering clear guidance and transparent fees throughout the process.
If you would like further information or to speak to a specialist, you can explore our services or get in touch with our team.
