Can You Transfer Shares Into an ISA? Bed and ISA Explained
Plenty of UK investors build up shares and funds outside an ISA — in a General Investment Account, an old share certificate or a workplace scheme — and then wonder how to shelter them from tax. You can’t simply move them across, but a Bed and ISA gets you to the same place. Here’s how it works, what it does to your capital gains tax bill, and what it costs.
Published: 15 October 2026 at 07:10 · 8 min read
Can You Transfer Shares You Already Own Into an ISA?
No — ISA rules only let you subscribe cash, so shares and funds you already own outside an ISA can’t be moved in directly. This catches people out because ISA-to-ISA transfers can move holdings “in specie”. That only works for investments already inside an ISA wrapper. A General Investment Account (GIA), a nominee account or paper share certificates are all outside it.
The workaround is a Bed and ISA: you sell the investments outside the ISA and immediately buy them back inside it, using the sale proceeds as your ISA subscription. You end up holding the same investments, now sheltered from dividend tax and capital gains tax for good.
There is one genuine exception. Shares from an employee Sharesave (SAYE) scheme or a Share Incentive Plan (SIP) can be transferred straight into a Stocks & Shares ISA within 90 days of the option being exercised or the shares leaving the plan. They go in at market value, count towards your £20,000 allowance (2025/26), and the transfer doesn’t trigger a capital gains tax charge. HMRC sets out the full ISA rules on gov.uk.
How Does a Bed and ISA Work?
Most platforms run a Bed and ISA as a single instruction that sells in your GIA and rebuys in your ISA on the same day. If you hold both accounts with the same provider, it usually takes a few clicks:
- Choose the holding and amount. You can move all or part of a holding, up to your remaining ISA allowance for the tax year.
- The platform sells in the GIA. This is the moment that counts for capital gains tax — the sale price sets your gain or loss.
- The proceeds are subscribed to your ISA. This uses your annual allowance in the same way as a normal deposit.
- The platform buys the same investment in the ISA. For shares and ETFs this is often within minutes; for funds (OEICs and unit trusts), which price once a day, it may be the next valuation point.
Your holdings are at another provider or on paper? Transfer them to your ISA provider’s GIA first, or sell where they are and pay the cash into the ISA yourself — accepting that you’ll be out of the market for a few days. If you’re buying the investment back on a different platform, check it offers the same fund or share class first.
What Are the Capital Gains Tax Implications of a Bed and ISA?
The sale in your GIA is a disposal, so any gain above the £3,000 annual exempt amount (2025/26) is taxable at 18% (basic rate) or 24% (higher and additional rate). Shares and units of the same fund are pooled (Section 104), so the gain on a part-sale is worked out on a proportion of your average cost.
Take a GIA holding of a global index fund worth £60,000 that cost £45,000. A quarter of every pound sold is gain:
| Amount moved to ISA | Gain realised | Taxable after £3,000 | CGT (basic / higher) |
|---|---|---|---|
| £12,000 | £3,000 | £0 | £0 / £0 |
| £20,000 (full allowance) | £5,000 | £2,000 | £360 / £480 |
| £40,000 (couple, £20,000 each) | £10,000 (£5,000 each) | £4,000 (£2,000 each) | £720 / £960 |
| Sell all £60,000 in one year | £15,000 | £12,000 | £2,160 / £2,880 |
Paying a few hundred pounds of CGT to shelter £20,000 can still be worth it: the tax would only grow if the gain kept building in the GIA. But spreading the move over several tax years, or splitting with a spouse, usually brings the bill close to zero. Selling everything at once is rarely sensible, because only £20,000 can go into the ISA anyway.
Two useful quirks. First, the 30-day “bed and breakfasting” rule doesn’t apply when you rebuy inside an ISA, so the gain is genuinely crystallised even though you buy the same investment back the same day. Second, if a holding is standing at a loss, a Bed and ISA crystallises that loss, which you can report to HMRC within four years and set against future gains. Our guide to capital gains tax for FIRE investors covers rates and reporting in more detail, including the £50,000 proceeds threshold above which you must report disposals even if no tax is due.
What Does a Bed and ISA Cost?
For index funds and ETFs, a Bed and ISA usually costs very little; for individual UK shares, stamp duty on the repurchase is the main expense. Here’s what to expect on a £20,000 move:
| Cost | Index funds (OEICs) | ETFs | UK-listed shares |
|---|---|---|---|
| Dealing charges | Often £0 | £0–£25 for both legs; many platforms discount Bed and ISA | £0–£25 for both legs |
| Bid–offer spread | None (single price) | ~0.05–0.2% (£10–£40) | Varies; wider for smaller companies |
| Stamp duty (0.5% on purchase) | £0 | £0 | £100 (AIM shares exempt) |
| Time out of the market | Up to a day between pricing points | Minutes | Minutes |
Compare that with what you save. A £60,000 global tracker yielding around 1.8% pays about £1,080 a year in dividends. After the £500 dividend allowance, a basic-rate taxpayer pays around £51 a year in dividend tax and a higher-rate taxpayer around £196 — every year, rising as the portfolio grows, plus CGT on all future growth. Our guide to how index funds are taxed in a GIA walks through the full drag, including excess reportable income on offshore ETFs.
How Should FIRE Investors Plan a Bed and ISA?
Make it an annual habit: move as much as your allowance allows early in each tax year, sized to use your £3,000 CGT exemption, until the GIA is empty. A few principles help:
- Go early in the tax year. A Bed and ISA on or soon after 6 April gives the money a full extra year of tax-free growth, and avoids the March rush when platforms are slowest.
- Use both allowances as a couple. Transfers between spouses and civil partners are on a no-gain, no-loss basis, so moving half a holding to your partner first lets you use two £20,000 ISA allowances and two £3,000 CGT exemptions.
- Prioritise the most heavily taxed holdings. Bond funds (taxed as interest), high-yield funds and holdings with the largest expected growth benefit most from the wrapper.
- Don’t forget new money. If you’re also saving from salary, a Bed and ISA competes for the same £20,000. Since April 2024 you can split it across more than one Stocks & Shares ISA, but the total is still capped.
- Consider a Bed and SIPP for the rest. Selling GIA holdings and contributing the cash to a SIPP adds tax relief — £20,000 becomes £25,000, with a further £5,000 back for higher-rate taxpayers. The catch is access: not until 55, rising to 57 from April 2028. Most early retirees need ISA money to bridge the gap, so the right mix depends on your timeline.
Already have your investments in an ISA but want a cheaper platform? That’s a standard ISA transfer, not a Bed and ISA — see our step-by-step ISA transfer guide.
Frequently Asked Questions
Can I transfer shares I already own into an ISA?
Not directly. ISA rules do not allow you to move existing shares or funds from a General Investment Account or share certificate into a Stocks & Shares ISA. Instead you sell them and buy them back inside the ISA, known as a Bed and ISA. The one main exception is shares from an employee Sharesave (SAYE) or Share Incentive Plan, which can be transferred into an ISA within 90 days without a capital gains tax charge, counting towards your £20,000 annual allowance.
Does a Bed and ISA count towards my ISA allowance?
Yes. The cash paid into the ISA to buy the investments back is a new subscription, so it uses up your £20,000 annual ISA allowance (2025/26). If your General Investment Account is worth more than your remaining allowance, you can only Bed and ISA up to that amount each tax year and move the rest in later years.
Do I pay capital gains tax on a Bed and ISA?
Possibly. Selling the investments in your General Investment Account is a disposal for capital gains tax. Any gain above the £3,000 annual exempt amount (2025/26) is taxed at 18% for basic-rate taxpayers and 24% for higher and additional-rate taxpayers. Many investors size their Bed and ISA so the gain stays within £3,000, or split holdings with a spouse so both allowances can be used.
Does the 30-day rule apply to a Bed and ISA?
No. The 30-day "bed and breakfasting" share-matching rule does not apply when the repurchase happens inside an ISA, so you can buy back the same shares or fund on the same day and still crystallise the gain or loss for capital gains tax purposes.
Is a Bed and SIPP better than a Bed and ISA?
It depends on when you need the money. A Bed and SIPP adds tax relief: a £20,000 contribution becomes £25,000 in the pension, and higher-rate taxpayers can claim a further £5,000 back through self assessment. But the money is locked until normal minimum pension age, 55 now and rising to 57 from April 2028. For FIRE investors who need a bridge before pension access, the ISA is usually the better home for at least part of the money.
Work Out Your Own Numbers
Every £20,000 you move from a GIA into an ISA is money that never pays dividend tax or CGT again. See what that shelter is worth over your FIRE timeline:
- ISA Millionaire Calculator — see how long it takes to reach £1 million in your ISA when you use the full allowance each year
- ISA vs SIPP Calculator — compare a Bed and ISA with a Bed and SIPP based on your tax band and when you plan to retire
And don’t forget the full new State Pension of £11,502 a year (2025/26) from 67 — check your forecast at gov.uk/check-state-pension.
See Every Wrapper in One Place
FIRE Finance tracks your ISAs, GIA, pensions, savings and debts side by side, so you can see how much is still exposed to tax and watch your net worth and FIRE progress as you move it across. Built for UK investors, in pounds.
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