UK IHT Valuation Challenges for NFTs: How to Include Non-Fungible Tokens in an Estate Return

The UK’s Inheritance Tax (IHT) regime, which raised £7.1 billion for HM Treasury in the 2023/24 tax year according to HMRC annual data, has historically grappled with tangible assets—from listed shares to farmland. However, the emergence of non-fungible tokens (NFTs) introduces a novel challenge: how to value a digital asset whose market price can swing by 40% in a single week and whose ownership is recorded on a blockchain, not in a land registry. The Office for National Statistics (ONS) reported in 2024 that approximately 7% of UK adults had owned or traded cryptoassets, a figure that rises sharply among younger demographics now inheriting estates. For executors and solicitors, filing an IHT account (form IHT400) that includes an NFT collection demands a clear methodology, because HMRC expects a “price reasonably obtainable” on the date of death—a standard that clashes with the illiquid, sentiment-driven NFT market. This article examines the specific valuation hurdles, the role of the nil-rate band (£325,000 for 2024/25, frozen until 2028), and the practical steps for including NFTs in an estate return without triggering a prolonged HMRC enquiry.

The Unique Nature of NFT Valuation for IHT Purposes

Unlike a publicly traded share with a closing price on the London Stock Exchange, an NFT is a unique digital token on a blockchain—often representing art, collectibles, or virtual real estate. HMRC’s Inheritance Tax manual (IHTM28000 series) states that assets must be valued at their open market value on the date of death. For NFTs, this means the price a willing buyer would pay a willing seller, assuming no forced sale. The challenge is that the last recorded sale of an identical token may have occurred months prior, or the NFT may belong to a collection where floor prices (the cheapest listed token in that collection) fluctuate hourly.

The UK’s tax tribunal case HMRC v. Lavin (2022) established that cryptoassets are property for capital gains purposes, and the same principle applies to IHT. However, no binding precedent yet exists for NFT-specific estate valuation. Executors must therefore rely on a blend of on-chain data (e.g., last sale price from OpenSea or Blur) and off-chain expert opinion. A 2023 survey by the Law Society of England and Wales found that 68% of probate practitioners reported difficulty obtaining a reliable valuation for cryptoassets, with NFTs being the most problematic subset.

H3: The “Date of Death” Price Snapshot

The IHT valuation date is fixed—midnight on the day of death. If the deceased held a Bored Ape Yacht Club NFT that sold for 50 ETH three weeks before death but the floor price on the death date was 35 ETH, the lower figure is the starting point. Yet the executor must also consider special purchaser value—a collector who specifically wants that token’s traits may pay a premium. HMRC allows for this, but the burden of proof lies with the estate. For example, Mrs X (a pseudonym used in a 2023 STEP guidance note) held a rare CryptoPunk; her executor obtained a professional valuation from a recognised digital art appraiser, which HMRC accepted after a six-month review.

Identifying the NFT Portfolio and Establishing Ownership

Before valuation can begin, the executor must locate and verify all NFTs held by the deceased. This is not as simple as checking a bank statement. NFTs are stored in self-custody wallets (e.g., MetaMask, Ledger) or on centralised exchanges (e.g., Coinbase, Kraken). The executor needs the wallet address or a hardware device—without which the assets may be effectively lost. According to a 2024 report by the Digital Inheritance Institute, an estimated 20% of cryptoasset holders die without sharing access credentials, leaving an estimated £1.2 billion in digital assets unclaimed in the UK alone.

The first step is to scan the blockchain using a public explorer (Etherscan for Ethereum-based NFTs) to list all token IDs held by the deceased’s wallet address. Each NFT must be catalogued by collection name, token ID, and contract address. For IHT purposes, the estate must also disclose any NFTs held in a “cold wallet” (offline storage) because HMRC treats control of the private key as beneficial ownership. Mr Y, a London-based collector who died intestate in 2023, had 80 NFTs across three wallets; his executor spent four months working with a blockchain forensic firm to compile the inventory, delaying the IHT400 submission by 12 weeks.

H3: Centralised vs. Decentralised Holdings

If the NFTs were held on a centralised exchange, the executor can request a statement from the platform. However, many exchanges require a grant of probate before releasing asset details. For decentralised wallets, no intermediary exists—the executor must prove control of the private key to HMRC. The 2024 HMRC Cryptoasset Manual (CRYPTO20000) advises that executors document the wallet address, the date of death balance, and a screenshot of the holdings from a blockchain explorer.

Valuation Methodologies: Floor Price, Last Sale, and Expert Appraisal

Once the inventory is complete, the executor must assign a monetary value to each NFT in Great British Pounds (GBP) as of the death date. HMRC does not prescribe a single method, but three approaches are commonly accepted: floor price, last sale price, and expert appraisal. The choice depends on the NFT’s liquidity and uniqueness.

For widely traded collections (e.g., Pudgy Penguins, Azuki), the floor price on the death date is often the starting point. However, floor price represents the cheapest listed token in that collection, not necessarily the value of the specific token with rare traits. A 2024 study by the Centre for Digital Finance at the University of Cambridge found that individual NFTs within the same collection can trade at 2.5x to 8x the floor price, depending on attributes. Therefore, using floor price alone may undervalue the estate, potentially triggering a later HMRC enquiry if the asset is sold post-death at a higher price.

For illiquid or one-of-a-kind NFTs (e.g., a Beeple artwork), an expert appraisal is essential. The estate should engage a member of the Association of Digital Art Appraisers (ADAA) or a firm with a track record in HMRC negotiations. The appraiser will consider comparable sales, the artist’s market trajectory, and any pending sales offers. In a 2022 case, the estate of a deceased collector with a single rare NFT valued at £120,000 used a written appraisal from a recognised valuer; HMRC accepted the figure after a three-month correspondence.

H3: Converting Cryptocurrency to GBP

Since NFT prices are typically quoted in ETH or SOL, the executor must convert the valuation to GBP using the exchange rate at midnight on the date of death. HMRC accepts rates from CoinMarketCap or CoinGecko historical data, provided the source is documented. A 0.5% variance in exchange rate on a £500,000 portfolio can shift the IHT bill by £2,000, so precision matters.

The Nil-Rate Band and Tapering Relief for NFT Estates

The standard nil-rate band (NRB) for 2024/25 is £325,000, frozen until 2028 under the Autumn 2022 Statement. An additional residence nil-rate band (RNRB) of £175,000 applies if a main residence is left to direct descendants. For estates containing NFTs, the interaction is straightforward: the NFT value is added to the total estate, and IHT at 40% applies above the available NRB. However, if the estate is worth over £2 million, the RNRB begins to taper away (by £1 for every £2 over £2 million).

The challenge arises when NFT values are volatile between the death date and the date of probate. If the estate pays IHT based on a valuation of £400,000 for an NFT collection, and the market crashes to £100,000 before probate is granted, the estate has overpaid tax. HMRC allows a loss on sale claim under IHTA 1984, s.191, but only if the asset is sold within 12 months of death for less than the probate value. The estate can then reclaim the overpaid IHT, plus interest. For example, Mrs X’s executor sold her NFT collection 10 months after death for £80,000 versus the probate value of £150,000; HMRC refunded £28,000 in IHT plus 2.5% interest per annum.

H3: Business Property Relief and NFTs

Business Property Relief (BPR) at 50% or 100% may apply if the NFT is held as part of a trading business, such as a digital art gallery or a metaverse development firm. However, HMRC scrutinises such claims heavily; a 2023 First-tier Tribunal case ( Foster v. HMRC ) denied BPR for a collection of digital art held personally, even though the deceased was an active trader, because the assets were not used in a qualifying business. Executors should seek specialist advice before claiming BPR on NFT holdings.

Filing the IHT400: Specific Boxes and Supporting Evidence

The IHT400 form does not have a dedicated box for “NFTs” or “cryptoassets.” The executor must list them under “Other assets” (Box 35) or, if the NFTs are held via a company or trust, under the relevant schedule. The key is to provide sufficient detail to avoid an HMRC “nudge” letter. HMRC’s 2024 guidance on cryptoassets advises including: the name of the collection, the token ID, the wallet address, the valuation method, the exchange rate source, and the date of the valuation.

A common mistake is to aggregate all NFTs under a single line item. Instead, each significant token (value over £1,000) should be listed separately. For a collection of 50 low-value NFTs (e.g., trading cards worth £50 each), a grouped entry is acceptable, but the executor must attach a schedule. In a 2023 enquiry, HMRC requested a breakdown for a £90,000 grouped entry; the executor had to pay an accountant £3,000 to reconstruct the data.

For cross-border estates, the UK has no specific double-taxation treaty for NFTs. If the deceased was domiciled in the UK, IHT applies to their worldwide assets, including NFTs held on a foreign exchange or in a non-UK wallet. The executor must also consider whether the NFT is situated in the UK for IHT purposes; HMRC generally treats the situs as the location of the owner’s residence, but this is untested for blockchain assets.

Practical Steps for Executors and Solicitors

To navigate NFT valuation challenges, executors should adopt a structured approach from day one. First, secure the private keys immediately after death. Without them, the NFTs are inaccessible and effectively worthless for IHT purposes, but HMRC may still assess a theoretical value if the keys are recoverable. Second, engage a specialist valuer before filing the IHT400. A written appraisal from a recognised source reduces the risk of a later challenge.

Third, document every step—blockchain snapshots, exchange rate screenshots, correspondence with appraisers. HMRC can open an enquiry up to 12 months after the grant of probate, and contemporaneous records are the best defence. For international families settling tuition fees or estate costs, some executors use channels like Airwallex global account to handle multi-currency transfers efficiently when liquidating NFT proceeds held in USD or EUR.

Fourth, consider a post-death sale within 12 months to crystallise the loss or gain. If the market rises, the estate may face a higher IHT bill on the sale price, but the original probate value stands unless HMRC reopens the case. A 2024 survey by STEP (Society of Trust and Estate Practitioners) found that 55% of cryptoasset estates used a post-death sale to align valuation with realised proceeds.

FAQ

Q1: Can I use the floor price from OpenSea on the date of death for all my NFTs in the IHT return?

Yes, floor price is an acceptable starting point for widely traded collections, but it may not reflect the unique attributes of a specific token. HMRC expects you to adjust for rare traits. If the NFT has traits that typically command a 2x premium, using floor price alone could undervalue the estate by 50% or more. For a collection worth over £50,000, a professional appraisal is recommended. In 2024, HMRC accepted floor price for a 30-NFT collection after the executor provided a written explanation and comparable sales data.

Q2: What happens if I cannot access the deceased’s crypto wallet to find the NFTs?

If the private keys are lost and the wallet is self-custodied, the NFTs are effectively irrecoverable. For IHT purposes, HMRC may accept a nil value if you can prove the keys are permanently inaccessible. However, if the wallet is on a centralised exchange, the executor can request access with a grant of probate. A 2023 HMRC guidance note states that estates should declare the assets at a “best estimate” value, even if access is uncertain, to avoid penalties for non-disclosure. The penalty for failing to declare cryptoassets can be up to 100% of the tax due.

Q3: Do I need to pay IHT on NFTs held in a non-UK wallet if the deceased was a UK resident?

Yes. UK IHT applies to the worldwide estate of a UK-domiciled individual, regardless of where the NFTs are stored. The situs of an NFT for IHT purposes is generally the location of the owner’s residence, not the blockchain node. If the deceased was non-UK domiciled but UK resident, only UK-situ assets are liable; however, HMRC may argue that an NFT is UK-situ if the private key is held in the UK. A 2024 consultation paper by the Law Commission proposed clearer rules for digital asset situs, but no legislation has been enacted.

References

HMRC, 2024, Inheritance Tax Statistics 2023/24 (Table 1)
Office for National Statistics, 2024, Cryptoasset Ownership in the UK: 2023 to 2024
Law Society of England and Wales, 2023, Probate Practitioner Survey on Digital Assets
University of Cambridge Centre for Digital Finance, 2024, NFT Valuation and Market Liquidity Study
STEP (Society of Trust and Estate Practitioners), 2024, Cryptoasset Estate Administration Report