Bed & ISA UK 2026 — How to Move Investments into an ISA Tax-Efficiently

Moving your investments out of a general investment account (GIA) and into a Stocks and Shares ISA is one of the most powerful tax-planning moves available to UK investors — and it's completely legal. The strategy is called Bed & ISA, and in 2026/27 it deserves serious attention given the reduced Annual Exempt Amount and changed CGT rates that took effect in recent years.

What is Bed & ISA?

Bed & ISA means you sell investments held outside an ISA (in a GIA or bare account), potentially pay Capital Gains Tax on any profit, then rebuy the same investments inside a Stocks and Shares ISA. From that point forward, all future growth and income is shielded from tax permanently.

The name echoes the old "Bed & Breakfast" strategy — selling shares one day and rebuying the next to crystallise a gain — but Bed & ISA has one crucial difference: you're not rebuying in the same account. You're rebuying inside an ISA, which means the 30-day rule that would otherwise apply to Bed & Breakfast transactions does not apply. HMRC specifically confirms that purchases inside an ISA do not trigger the 30-day anti-avoidance rule.

Why It Matters More in 2026/27

Several recent changes make Bed & ISA more attractive than ever:

The collapse in the AEA from £12,300 to £3,000 means that even modest gains are now taxable. Moving gains into an ISA as soon as possible — even if it means paying some CGT now — can save you substantially more tax over the long run.

The 30-Day Rule: Why It Doesn't Apply

Under HMRC's share matching rules, if you sell shares and rebuy identical shares within 30 days, the sale is matched to the repurchase rather than your original acquisition. This would defeat the purpose of crystallising a gain.

However, the 30-day rule applies to shares in the same account or tax environment. Shares purchased inside an ISA are specifically excluded from this matching rule. So if you sell 1,000 units of a Vanguard FTSE All-World fund in your GIA on Monday and buy 1,000 units of the same fund inside your ISA on Tuesday, the sale is not matched to the new purchase. The gain or loss on the GIA sale is calculated normally.

CGT Rates for 2026/27

Capital Gains Tax on investments (shares, funds — not residential property) is charged at:

• 18% if the gain falls within your unused basic-rate Income Tax band
• 24% if the gain falls in the higher-rate band (or you are a higher-rate taxpayer)

The AEA is £3,000 per individual per tax year. Gains up to £3,000 are tax-free. Above that threshold, CGT applies.

Residential property attracts different rates (18%/24%) but Bed & ISA typically involves shares and funds, not property.

Worked Example: £15,000 Holding, £7,000 Gain

Meet Sarah. She holds a global equity tracker fund in a GIA:

• Original cost: £8,000
• Current value: £15,000
• Unrealised gain: £7,000

Sarah is a basic-rate taxpayer with no other capital gains this year.

Step 1 — Calculate taxable gain:

Step 2 — CGT owed:

£4,000 × 18% = £720

Step 3 — Amount available to invest in ISA:

Sarah receives £15,000 from the sale. She owes £720 in CGT (payable via Self Assessment by 31 January 2028). She invests £14,280 into her Stocks and Shares ISA — within her £20,000 annual allowance.

Step 4 — Long-term benefit:

Assuming 7% annual growth over 20 years, the £14,280 grows to approximately £55,300 inside the ISA — all completely free of CGT and Income Tax on dividends. Without the ISA, she would face a growing CGT liability each year she realised gains.

The £720 she pays now saves far more in tax over the long run.

Step-by-Step Process

1. Check your GIA holdings and identify unrealised gains (most platforms show this in a "portfolio" or "gain/loss" view).
2. Calculate your remaining AEA. Have you used any of your £3,000 annual exemption already this tax year?
3. Work out your Income Tax position. Are you basic-rate or higher-rate? This determines whether CGT is 18% or 24%.
4. Decide how much to move. You may want to spread large holdings over multiple tax years to use the AEA each year.
5. Sell in your GIA. Proceed to the sale on your investment platform. The money usually arrives in your account in T+2 settlement days.
6. Invest inside your ISA. Log in to your ISA (or open one if you don't have one), deposit the proceeds and rebuy your chosen fund or shares.
7. Record the transaction. Keep a note of the sale price, original cost and gain. You'll need this for your Self Assessment tax return.
8. File your Self Assessment (if you have gains above the AEA) by 31 January 2028 for the 2026/27 tax year.

Platform Tips

Most platforms that offer both a GIA and a Stocks and Shares ISA make Bed & ISA straightforward:

• Vanguard Investor — has a specific "ISA transfer" feature that handles the sell/buy in one process. Note that Vanguard only offers its own funds.
• Hargreaves Lansdown — allows you to sell in your Fund & Share Account and buy in your ISA on the same day, but the two transactions must be initiated separately.
• InvestEngine — low-cost ETF platform with both GIA and ISA; straightforward manual process.
• Freetrade — offers both account types; simple interface but limited fund range.

Important: Not all platforms settle at the same speed. Selling in your GIA may take T+2 days before cash is available to invest in the ISA. Over busy market periods, this means you might miss a day or two of market movement — a minor risk worth accepting for long-term tax savings.

Spreading Over Multiple Tax Years

If your unrealised gains are large — say, £30,000 — it may make sense to drip the Bed & ISA over two or three tax years. This lets you use:

• Your AEA each year (£3,000 = £9,000 exemption over 3 years)
• Your partner's AEA if they own the same investments (gifts between spouses/civil partners are CGT-free at the original cost — the "no gain, no loss" rule)

For example, gifting 50% of a joint fund holding to your spouse, then each doing a Bed & ISA, effectively doubles your available AEA in a single year.

Bed & ISA vs Bed & SIPP

A variant is Bed & SIPP — selling in a GIA and rebuying inside a Self-Invested Personal Pension. The CGT position is the same (you still pay tax on the gain). However, the money going into the SIPP also attracts pension tax relief:

• A basic-rate taxpayer contributes £800, which becomes £1,000 in their SIPP (20% relief)
• A higher-rate taxpayer contributes £600 net and claims an extra 20% via Self Assessment (total cost to them: £600 for £1,000 invested)

The key difference from Bed & ISA: pension money is locked away until age 57 (rising from 55 to 57 in April 2028). ISA money is accessible at any time.

Losses Can Help Too

If you have holdings sitting at a loss in your GIA, crystallising those losses and reporting them to HMRC creates a "CGT loss pool" you can offset against future gains. Combined with Bed & ISA for profitable holdings, you can sometimes eliminate your CGT bill entirely in a given year while still moving assets into the ISA. Always worth reviewing your entire portfolio — not just the winners.

Common Mistakes to Avoid

• Forgetting the Self Assessment filing obligation. If your gains exceed £3,000 in a tax year, you must file even if the tax bill is zero (e.g., because of allowable losses).
• Assuming the 30-day rule blocks you. It doesn't — as long as you're rebuying inside an ISA.
• Waiting until just before 5 April. ISA subscriptions are time-sensitive; if there are settlement delays or platform issues, you may miss the tax year.
• Exceeding the £20,000 ISA limit. If your Bed & ISA proceeds exceed £20,000, only £20,000 can go into the ISA this tax year. The excess remains in your GIA.
• Ignoring your partner's allowances. The AEA is per person; spouses have their own.

Is Bed & ISA Right for You?

Bed & ISA is most valuable when:

• You have significant gains sitting in a GIA that you would otherwise leave indefinitely
• You are a basic-rate taxpayer (18% CGT now vs zero tax on future ISA growth)
• You have ISA capacity remaining
• You plan to hold the investments for many years (the longer the time horizon, the bigger the ISA advantage)

It is less compelling if:

• You are close to retirement and plan to sell the investments soon anyway (the tax saving window is short)
• The CGT bill would significantly exceed the long-term benefit (rare, but worth modelling)
• Your investment platform charges hefty dealing fees that wipe out the gain

Use the Bed & ISA calculator to model your specific situation with your actual gain, tax rate and investment horizon.