Before moving BTC, confirm the transfer is a genuine outright gift, that you are living together, and that both wallets or exchange accounts are correctly identified. Record the date, BTC amount, transaction ID, GBP value, network fee and any dust left behind. A network fee can have its own CGT effect even where the gift itself does not.
In England, a genuine Bitcoin transfer to your spouse or civil partner is normally no gain/no loss for Capital Gains Tax if you are living together. No CGT is triggered on the gift, but your spouse inherits the historical pooled cost, so the tax is usually deferred rather than erased.
A spouse gift can defer CGT, not remove it
A genuine outright BTC gift between spouses or civil partners is normally treated as no gain/no loss for CGT under Section 58 of the Taxation of Chargeable Gains Act 1992. No gain or loss is calculated on the transfer date, but the receiving spouse takes over the relevant tax history and historic cost of the Bitcoin.
The rule generally requires both people to be spouses or civil partners who are living together. An unmarried partner, fiancé, sibling or friend does not qualify, so a BTC gift to them is usually a disposal at market value for CGT.
The gift must be real in practice
Your spouse must receive beneficial ownership: the real right to control, enjoy and keep the BTC. Sending coins to an address where you alone hold the private key is weak evidence of a gift, particularly if the recipient cannot independently access or move the Bitcoin.
Relationship status and timing matter. A civil partner Bitcoin gift and a transfer between spouses can qualify under Section 58 TCGA 1992 while the couple is living together, whereas an unmarried couple does not obtain the same automatic no gain/no loss treatment. For disposals on or after 6 April 2023, spouses or civil partners who have permanently ceased living together can generally make qualifying no gain/no loss transfers until the end of the third tax year after the tax year of separation.
Transfers made under a formal divorce or dissolution agreement may qualify for longer. The facts, dates and agreement should be retained, because a transfer outside these rules can instead be treated as a market-value disposal for CGT.
Your spouse inherits the original pooled BTC cost
Your spouse normally inherits the relevant share of your Section 104 pool, HMRC’s running average-cost record for identical cryptoassets such as BTC. They do not normally acquire the Bitcoin at its market value on the gift date, so original purchase evidence remains essential.
If your Section 104 pool contains 1 BTC with allowable costs of £20,000 and you gift 0.40 BTC, your spouse normally receives £8,000 of pooled allowable cost. Your remaining 0.60 BTC keeps £12,000 of allowable cost.
The recipient’s later sale, swap, spending transaction or other disposal is where the deferred gain is normally tested. Their gain is calculated using sale proceeds less the inherited allowable cost and permitted selling costs, with their own losses and available Annual Exempt Amount.
Model the sale before transferring BTC to your spouse
A gift can be sensible tax planning only where it is genuine, documented and based on both spouses’ real tax positions. A transfer may reduce household CGT if the receiving spouse is better placed to make the later disposal, so check each person’s unused Annual Exempt Amount, capital losses, taxable income, other gains and likely CGT rate before proceeding.
Calculate the inherited pool cost and compare the outcome of selling before or after the transfer. Transfer BTC only to a wallet controlled by the recipient, and do not rush because Bitcoin’s price is moving: any tax benefit comes from the later household calculation, not from pressing send.
| Option | Who sells BTC | CGT allowance used | Historic cost used |
|---|
| Sell before gift | Original holder | Original holder only | Original pool cost |
| Gift, then spouse sells | Receiving spouse | Recipient, if unused | Inherited pool cost |
Send BTC to a wallet your spouse controls
A defensible BTC gift requires both the blockchain transfer and evidence that your spouse controls what arrives. Use a wallet or exchange account in the recipient’s name, with their own security settings, and retain the transaction hash or TXID linking the sending and receiving addresses.
A practical transfer and evidence sequence
- Write a short gift confirmation stating the BTC amount, date, that it is an outright gift, and that no repayment is expected.
- Confirm the recipient address using a second channel, such as reading it from the spouse’s wallet and checking the first and last characters.
- Save the original purchase statements, trade confirmations and Section 104 pool calculation before sending.
- Make a test transfer where the value justifies it, then verify receipt in the recipient’s wallet.
- Send the agreed BTC amount and save the TXID, sender address, recipient address, date, time and BTC amount.
- Save proof that the recipient controls the wallet or exchange account, then reconcile both BTC balances.
Build an HMRC-ready evidence file
Keep exchange CSV files, purchase statements, wallet addresses, blockchain evidence, GBP valuation method, gift letter, Section 104 calculation and evidence of recipient control. The file should link the first acquisition to the eventual sale without unexplained gaps.
Evidence chain:
Purchase records → Section 104 cost → Gift letter → TXID and addresses → Recipient control → Later sale record
Record BTC fees and dust before reconciling
Network and exchange withdrawal fees must be recorded because a fee paid in BTC may itself be a disposal for CGT. Reconcile the exact BTC debited, the fee, the amount received by your spouse and any dust remaining in the original wallet or exchange account.
Fees can create a small disposal
If an exchange deducts 0.00005 BTC as a withdrawal fee, record its GBP value and the pooled cost allocated to it. If the fee is paid from a GBP cash balance, no BTC is disposed of to pay that fee, but retain the statement explaining the difference in BTC balances.
Avoid shared control after the gift
Do not retain the only private key, recovery phrase, exchange password or withdrawal approval. Your spouse should be able to access and move their BTC independently, which supports the position that they received genuine beneficial ownership.
This treatment may not apply if you are unmarried, not civil partners, living separately permanently, not UK tax resident, or making something other than a genuine outright gift. Separation or divorce arrangements can have separate rules. It also does not remove tax from a later BTC sale, swap, spend, mining income or other taxable crypto activity. Seek tailored advice for substantial holdings or changing relationship circumstances.
FAQs
Can I transfer bitcoin to my wife tax-free in the UK?
Yes, a genuine gift to a wife, husband or civil partner is normally no gain/no loss for CGT if you are living together. The historic gain passes with the BTC rather than disappearing.
Can unmarried partners use the same BTC rule?
No. Unmarried partners do not normally qualify for the Section 58 spouse and civil partner rule, so the gift is usually treated as a disposal at market value.
Does my spouse get a new bitcoin purchase price?
No. Your spouse normally inherits the relevant historic Section 104 pooled allowable cost. Record the gift-date market value as evidence, but do not substitute it for the inherited cost.
Is a BTC withdrawal fee taxable in the UK?
It can be where the fee is paid in BTC, because using BTC to pay it may be a CGT disposal. Record the BTC amount, GBP value and related pooled cost.
Do I need a deed of trust to gift bitcoin to my spouse?
No, not for a straightforward outright gift where your spouse receives real ownership and control. It may be useful where access, legal rights or intended ownership are more complex.
Can my spouse sell bitcoin straight after the gift?
Yes, but the sale remains taxable on the recipient using the inherited historic cost. Check their allowance, losses and CGT rate before assuming a saving.
Do I report the BTC gift on a self assessment tax return?
A qualifying no gain/no loss transfer does not normally create a CGT payment by itself. Keep complete records and report a later disposal where normal reporting requirements apply.
Can HMRC see bitcoin transfers between wallets?
HMRC can obtain exchange information and ask for records during an enquiry. Blockchain transfers are public, so retain the TXID and evidence explaining the gift.
