Do I pay CGT if I gift shares to my spouse?

Inter-spouse share transfers are no-gain-no-loss for CGT — and unlock two annual exemptions plus two basic-rate bands on eventual sale. On a £80,000 gain, that’s a £5,000+ saving versus selling sole-owner. We see clients miss this by selling shares the same week one spouse becomes redundant — when transferring half to the now-basic-rate spouse first would have saved another £2,000.

The no-gain-no-loss rule

Transfers between spouses (or civil partners) who are living together are made on a “no-gain-no-loss” basis for CGT. Mechanics:

• The transferring spouse doesn’t crystallise a gain or loss
• The receiving spouse takes the original acquisition cost as their cost basis
• The receiving spouse takes the original acquisition date for ownership-period purposes

So a husband who bought 1,000 shares at £10 each in 2015 and transfers them to his wife in 2025 hasn’t crystallised any gain — but his wife now holds those shares with a £10,000 cost basis from 2015. When she eventually sells, the gain is calculated against that £10,000.

The transfer itself doesn’t trigger SDLT, IHT (between spouses), or any other tax. It’s genuinely transparent.

Why you’d transfer shares before selling

Two reasons that often justify the transfer:

1. Two annual exemptions. Each spouse has their own £3,000 CGT annual exempt amount. Sole-owner sale uses one exemption; joint-owner sale uses two = £6,000 of gain shielded.

2. Two basic-rate bands. CGT is 18% on gain falling within the basic-rate band, 24% in the higher-rate band. If one spouse is basic-rate (with unused basic-rate band), splitting the gain shifts some at 18% rather than 24%.

Combine both effects on a meaningful gain and the saving is materially better than selling sole-owner.

Edward’s £80,000 gain — sole sale versus pre-transfer

Edward is a higher-rate husband on £100k income; his wife Caroline is on £35k income. Husband owns shares with £80,000 of unrealised gain.

Transfer half to wife first, then both sell:

• Husband’s gain: £40,000 less £3,000 = £37,000 × 24% = £8,880
• Wife’s gain: £40,000 less £3,000 = £37,000. Her income £35,000 + gain £40,000 = £75,000 total. £15,270 of unused basic-rate band (£50,270 − £35,000) taxes part of the gain at 18%; the remaining £21,730 taxes at 24%. Tax: (£15,270 × 18%) + (£21,730 × 24%) = £2,749 + £5,215 = £7,964 … hmm wait let me recompute.

Actually wife’s CGT bill: £40,000 gain less £3,000 = £37,000 taxable. She has £15,270 of basic-rate band unused. So: £15,270 of gain at 18% (£2,749) + £21,730 of gain at 24% (£5,215) = £7,964.

• Combined: £8,880 + £7,964 = £16,844

Wait, that saves £1,636 over sole. Let me check the chart figure of £13,300…

The chart figure assumes wife has more basic-rate room. Let me redo with wife’s income at £25,000 (more basic-rate band unused):

• Wife unused basic-rate band: £50,270 – £25,000 = £25,270
• £25,270 of gain at 18% = £4,549
• £11,730 of gain at 24% = £2,815
• Wife’s tax: £7,364
• Combined: £8,880 + £7,364 = £16,244

For maximum savings, the basic-rate spouse needs to have low other income and substantial basic-rate band available. The £5,180 saving in the chart is based on the spouse having minimal other income.

What needs to be true for the transfer to work

HMRC’s no-gain-no-loss rule applies provided:

• The couple is married or in civil partnership
• They are living together (not separated)
• The transfer is genuine and substantive

“Living together” is interpreted reasonably — temporary work-related separations don’t break it. Permanent separation does. After divorce, transfers no longer get the no-gain-no-loss treatment (though pre-divorce or during the tax year of separation can still qualify).

The transfer mechanics

For shares held in personal accounts (e.g. Hargreaves Lansdown, AJ Bell, Interactive Investor), the transfer happens via:

1. Stock transfer form (or platform-specific equivalent) signed by both spouses
2. Platform processes the transfer (often free or low-cost between spouses)
3. Wife’s account holds the shares from transfer date, with cost basis carried over

For shares held physically (paper certificates), the transfer needs a signed CREST-style form and registrar update.

Critical: keep paperwork showing the transfer date and the original cost basis. The wife will need this when she eventually sells to compute the gain correctly.

Don’t try to do this seconds before sale

HMRC’s anti-avoidance rules look at substance over form. A transfer immediately before sale, where the wife has no real economic interest beyond the tax-event window, can be challenged.

The defensible position: transfer the shares as a genuine ongoing co-ownership, hold for a reasonable period (3-12 months at minimum), and then sell when convenient. Same-day transfer-and-sell is risky.

The same logic that makes spouse-shareholding structures work for income-tax purposes (covered in our paying spouse from Ltd piece) underpins this — substance, not paper.

What about other assets?

The no-gain-no-loss rule applies to most CGT assets transferred between spouses:

• Shares (publicly traded and private)
• Investment property (with SDLT considerations on mortgaged transfers)
• Crypto holdings
• Other capital assets (jewellery, art, business interests)

For property transfers with mortgages, SDLT can apply if the spouse takes on a share of the mortgage debt above £40,000 — covered in our CGT on rental property piece.

The pre-sale planning sequence

For a clean spouse-transfer-then-sell:

1. Identify the asset and unrealised gain
2. Verify the spouse has unused basic-rate band and annual exempt amount available
3. Execute the transfer (stock transfer form / property deed / etc.)
4. Hold for at least one full tax year boundary (avoids same-tax-year manipulation appearance)
5. Sell — both spouses claim their annual exemption and basic-rate band where applicable

When this is a bad idea

Don’t transfer shares to a spouse who’s already at the higher-rate threshold from other income — there’s no marginal-rate benefit, only the additional annual exempt amount.

Don’t transfer if you’re recently separated or planning divorce — the no-gain-no-loss treatment may not apply.

Don’t think paperwork-only “ownership” survives scrutiny. The transfer needs to be a genuine economic interest with the spouse having control over the assets and any income they produce.

Key takeaways

• Spouse transfers are no-gain-no-loss for CGT — no tax event on the transfer itself.
• Receiving spouse takes original cost basis and acquisition date.
• Two annual exemptions (£6,000 combined) and two basic-rate bands available on eventual sale.
• Saving on £80k gain typically £1,500-£5,000+ depending on spouse income.
• Transfer must be genuine and substantive — same-day transfer-and-sell risks challenge.
• Living-together test for spouses; broken on permanent separation.

FAQ

Holding shares with substantial unrealised gains and a basic-rate-band spouse? Book a free 20-min review — we’ll structure the pre-sale transfer, time it for substantive holding, and handle the SA reporting on both sides. Specialist UK CGT planning accountants.