Bitcoin in an estate discovered at death creates time‑critical problems. Probate deadlines, unclear valuation and lost private keys can destroy value or block access.
Executors and heirs face immediate tax‑reporting obligations and security risks that need swift, practical action.
Inheritance & IHT on Bitcoin: owners and executors should act now — identify wallets and keys.
Value holdings at the date of death using a transparent exchange record. Secure access and do not share private keys.
Read the checklist below to start.
Summary of the process, urgent actions in order
Follow this numbered checklist to preserve value and meet HMRC deadlines.
- Identify all custody forms and locate seeds, devices and custodial accounts.
- Secure devices and create a chain-of-custody record before any movement.
- Value all holdings at the date of death using one justified price source.
- Gather KYC, exchange statements and blockchain evidence for CARF/HMRC.
- Instruct a probate solicitor and a chartered tax adviser specialising in crypto.
- File the correct IHT form (IHT205 or IHT400) with attached valuation evidence.
Locate every account, device and seed phrase the estate owns.
Search the deceased's email, password manager, physical safe and recent devices for wallet details.
Record public addresses, exchange usernames and any backup locations in a single inventory file.
Take immediate physical control of hardware wallets, USBs and paper seeds.
Place them in a locked safe or safe deposit box.
Contact custodial exchanges listed in the inventory. Follow their death‑reporting process to avoid freezes or unauthorised transfers.
In our experience across multiple estates, assuming a relative knows the seed phrase location causes delays that often last several weeks. This observation comes from a limited case sample and should be treated as indicative rather than definitive.
Readers should prioritise documented inventories and give secure instructions to executors.
Act now to keep control and avoid loss.
Immediate actionable items: store each device securely. Photograph serials. Label sealed seed envelopes. Log date and time of discovery.
⚠️ Executors frequently move funds too soon. Do not transfer assets until a solicitor and tax adviser are instructed.
Step 2: value holdings at date of death and document the source, create a defensible valuation
Choose one authoritative price source and record the timestamp and evidence.
List every holding with amount, custody type and a timestamped screenshot or API export from the chosen exchange.
Convert crypto to GBP at the same timestamp using the chosen exchange GBP pair. Record the conversion method.
Worked example A:
- 2.5 BTC
- date of death 15 June 2025 14:00 UTC
- Kraken XBT/GBP £18,400 → estate value £46,000 (2.5 × 18,400)
Worked example B: 10 BTC split across Coinbase and a hardware wallet.
Reconcile on‑chain UTXOs and exchange statements. Total the GBP conversions from the same timestamp.
Create a single valuation spreadsheet row per asset. Include fields: address/account, amount, timestamp (UTC), exchange/source, GBP price, GBP value, supporting file name.
This valuation protocol typically takes 2–7 days for small estates and 7–21 days for estates with multiple exchanges and accounts.
1. IDENTIFY
Addresses, custodians, devices
2. SECURE
Safes, sealed envelopes, logs
3. VALUE
Single price, timestamped evidence
4. REPORT
IHT form, CARF evidence
Keep KYC, exchange statements, txids, screenshots and chain‑of‑custody files together.
⚠️ Avoid valuing at a price without a recorded source. HMRC will expect a single justified timestamped price and supporting exports.
Step 3: prepare legal and tax filings, instruct specialists and build the evidence pack
Engage a probate solicitor and a chartered tax adviser with crypto experience immediately.
Provide the solicitor the inventory, chain‑of‑custody log, exchange statements and valuation spreadsheet.
Decide whether to file IHT205 or IHT400 with the solicitor based on estate value and complexity.
Collect KYC records from exchanges and custodians. They will be useful when CARF data is matched to declared assets.
Prepare to attach the valuation evidence, transaction history and a statement of provenance to the IHT submission.
In the author's experience, failing to collect exchange KYC statements leads to HMRC enquiries. Those enquiries often extend probate by months.
Actionable file list: death certificate and grant of probate when available. Wallet inventory, screenshots and txid list should follow. Also keep exchange statements, KYC records and the chain‑of‑custody log.
⚠️ Do not sign or authorise transfers with custodial exchanges until the solicitor confirms the correct procedural step. Exchanges often require certified documents.
Domicile, situs and cross‑border impact on IHT for cryptoassets
Cryptocurrencies complicate traditional rules regarding situs and domicile.
For UK IHT, a UK‑domiciled individual's worldwide assets including Bitcoin are generally within scope.
UK residents who are non‑domiciled face different exposures. This depends on whether they claim the remittance basis and the asset's effective situs.
Intangible property like crypto has no blanket physical situs, so practical factors matter.
Legal ownership and the registered KYC jurisdiction of the custodial exchange can influence situs. The location where private keys are controlled can also influence situs.
For example, a UK domiciled owner with BTC held at a Gibraltar exchange still normally attracts UK IHT. If the BTC sits in a hardware wallet kept abroad the result is similar.
A non‑domiciled UK resident may face different treatment and possible double‑tax issues. Executors should obtain cross‑border tax advice promptly and collect KYC and jurisdictional evidence for custodial exchange accounts.
Consider treaty or local probate interactions to avoid surprise IHT on cryptocurrencies for non‑domiciled residents or assets with foreign situs.
Step 4: preserve and transfer access securely, technical protocols for keys, multisig and custodians
Follow clear technical steps to avoid accidental loss.
If a hardware wallet exists, do not enter the seed into any internet‑connected device.
Keep the device offline and physically secure.
If the estate uses a custodial provider, check nomination options and the provider's death process.
Many providers will only release funds on production of a grant and certified ID.
If multisig protects funds, preserve all signatory devices and contact a multisig specialist before recovery.
Use Shamir’s Secret Sharing only with documented recombination instructions and trustee names.
Do not scatter complete seeds across insecure locations.
When a beneficiary will receive crypto, prefer transfer via a trustee or custodian rather than handing over raw seeds.
Do not hand the raw seed to an unprepared individual.
⚠️ Common error: photographing the seed phrase and storing the photo in cloud storage. This exposes assets to theft and undermines chain‑of‑custody evidence.
Step 5: gifting, trusts and testamentary clauses, practical comparison and templates
Compare mechanisms by control, IHT effect and practical access requirements before deciding.
| Mechanism |
Pros |
Cons |
| Will (simple bequest) |
Clear instructions; probate handles transfer |
Executor needs access; probate delays possible |
| Bare trust |
Direct beneficiary ownership; simple tax treatment |
Requires clean transfer of keys; beneficiary must accept control |
| Discretionary trust |
Protects beneficiaries; avoids gifting pitfalls |
Complex reporting; potential immediate IHT/CLT charges |
| Custodial nomination |
May allow direct transfer without probate (provider dependent) |
Provider processes vary; KYC and terms control outcome |
Sample will clause: specific bequest of bitcoin
"The testator's Bitcoin held at [provider/address] is bequeathed to [beneficiary name]."
"Any private key or recovery phrase located at [location] is also bequeathed to [beneficiary name]."
"The executors shall value the Bitcoin at the date of death using [named exchange]."
"They shall convert the value to GBP for IHT purposes."
"Executors may appoint a custodian to complete any transfer on behalf of the estate."
Sample trustee direction for sale or transfer
"The trustees are authorised to sell, transfer or hold cryptoassets held by the trust."
"The trustees shall document the date and price used for any valuation."
"They must retain all exchange statements and transaction identifiers."
⚠️ Trusts can create immediate tax charges. Do not assume a trust avoids IHT without professional tax modelling.
Errors that ruin the result, critical traps and how to avoid them
Identify the five failures that most often cause loss of value, delays or HMRC enquiries.
- Failure to document the seed or private key location or chain of custody.
- Using an arbitrary valuation or wrong valuation date without exchange evidence.
- Moving or selling assets before legal and tax advice is obtained.
- Relying on verbal instructions about wallets rather than written inventory.
- Not collecting exchange KYC and statements before CARF matches.
These five failures were responsible for a large share of avoidable HMRC enquiries and probate delays.
This observation covers estates handled in the six years immediately preceding 2026. The precise percentage varies by sample and jurisdiction. Use this as a practical warning about common pitfalls rather than an exact statistical claim.
⚠️ The single most frequent error: selling without a date‑of‑death valuation. This provokes HMRC to raise enquiries and may trigger penalties.
⚠️ When this is not the best option
This guide does not apply when all crypto holdings sit in a regulated custodial account with a clear beneficiary nomination.
A tested provider process that permits transfer without probate is another exception.
It also does not replace advice for estates where the situs or domicile is outside the United Kingdom.
For nominal holdings below the nil‑rate band a full IHT400 may not be required.
Follow your solicitor's advice.
Contact a probate solicitor and a chartered tax adviser now to avoid value loss and HMRC enquiry.
Frequently asked questions
Do you pay inheritance tax on bitcoin?
Yes: Bitcoin is part of the estate for IHT. Bitcoin counts as property under HMRC rules.
Executors must value holdings at the date of death and include the GBP value on IHT205 or IHT400. Spouse and charity exemptions still apply where relevant.
What to do if you inherit bitcoin?
Secure access, document provenance and seek legal and tax advice before moving assets.
Take physical control of devices, log chain‑of‑custody, obtain exchange statements and a timestamped valuation. Instruct a probate solicitor and a chartered tax adviser experienced in crypto to prepare IHT paperwork.
Do you have to declare bitcoin to HMRC?
Yes. Executors must include Bitcoin in the estate valuation on the appropriate IHT form.
HMRC expects supporting evidence for the valuation and may match declared holdings to exchange data under CARF. Keep KYC, screenshots, txids and chain‑of‑custody logs.
What happens to bitcoin when someone dies?
Bitcoin becomes part of the deceased's estate and passes under the will or intestacy rules.
Access depends on how control was held: sole private key, multisig, or custodial account. Executors must locate keys or work with custodians to transfer assets after IHT obligations are met.
Can beneficiaries access custodial exchange accounts directly?
Sometimes, if the provider allows a beneficiary nomination and accepts certified documents.
Most custodial platforms require a grant of probate or administrator documentation plus certified ID. Providers follow AML rules and may take weeks to process transfers.
How should an executor prove on‑chain ownership?
Use transaction identifiers, wallet addresses and exchange statements to prove control and provenance.
Export watch‑only wallet files, list txids with block explorer links and keep screenshots and exchange statements. These items form part of the CARF evidence pack HMRC will expect.
I recognise the fear of making a taxable mistake, triggering an HMRC enquiry or losing Bitcoin to inaccessible keys. Make a dated inventory of accounts, wallets and balances now.
Note where seed phrases and keys are kept and give your executor clear access instructions. Ask your solicitor to add wording to let executors value crypto at market price on the date of death and report it for IHT.
These steps simplify valuation, reporting and transfer and protect the estate.
Final steps and references
Follow the checklist at the start of this guide now. Secure devices, compile the valuation spreadsheet and instruct regulated advisers.
Keep a single, labelled evidence folder for probate and HMRC review. Expect HMRC to obtain greater exchange data under CARF from 2026 and prepare accordingly.
Relevant sources: HM Revenue & Customs guidance on cryptoassets and GOV.UK probate information. For HMRC official crypto guidance see HMRC: Tax on cryptoassets collection. For probate practice see GOV.UK: wills, probate and inheritance.
CARF reporting: timetable, what HMRC will receive and the documents to prepare
HMRC’s access to systematic exchange data under CARF is increasing. Prepare now for more automated HMRC crypto reporting from 2026 onwards.
CARF reporting typically includes trader identity, account identifiers, transaction flows and timestamps. Executors should therefore gather and retain full exchange CSV exports, KYC identity records, account opening dates, deposit and withdrawal histories, txid lists with block explorer links, and the date‑of‑death valuation spreadsheet with the single chosen price source.
Keep these files for at least seven to ten years and label them so HMRC can cross‑refer to exchange account IDs. This reduces the risk of CARF‑prompted enquiries after filing IHT205 or IHT400 and speeds resolution of custody or provider death queries.
Will selling inherited bitcoin create capital gains tax for beneficiaries?
A sale by the estate may trigger capital gains tax on the gain since date of death valuation.
The estate sells as a separate taxpayer. Gains are computed from the date of death market value to sale proceeds.
Beneficiaries usually receive proceeds after estate tax liabilities. Get a specialist to calculate CGT implications before sale.
