Investing Taxes in the UK (2026):
CGT, dividend tax, ISA, and ETF rules explained
UK investment tax has three moving parts: Capital Gains Tax (18%/24%), dividend tax (8.75%/33.75%), and the £20,000 ISA wrapper that makes both irrelevant. For ETF investors there is also a fourth layer — Reporting Fund Status and Excess Reportable Income — that catches many people by surprise. This guide covers all of it.
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UK investment tax at a glance
| Rate band | CGT rate |
|---|---|
| Basic rate taxpayer | 18% |
| Higher / additional rate | 24% |
| Annual CGT allowance | £3,000 |
| Rate band | Rate |
|---|---|
| Dividend allowance | £500 |
| Basic rate | 8.75% |
| Higher rate | 33.75% |
| Additional rate | 39.35% |
| Wrapper | Annual limit |
|---|---|
| Stocks and Shares ISA | £20,000 |
| Lifetime ISA | £4,000 |
| SIPP (pension) | £60,000 |
- Offshore ETFs must hold HMRC Reporting Fund Status — otherwise gains taxed as income
- Accumulating ETFs generate Excess Reportable Income (ERI) taxable each year even if no cash received
- Section 104 pool: shares are averaged — no specific identification
- 30-day rule: selling and rebuying the same ETF within 30 days creates a matching rule — the loss is not immediately crystallised
Capital Gains Tax on investments
Capital Gains Tax applies when you sell shares, ETFs, or funds outside a tax wrapper for more than you paid. The October 2024 budget raised CGT rates on investments from 10%/20% to 18%/24% — a significant increase for long-term holders building outside an ISA.
Your gain = disposal proceeds minus your allowable cost (including dealing charges). From this, subtract the annual CGT allowance (£3,000 in 2025/26). The remaining gain is added on top of your income to determine which rate band applies.
If your total income plus capital gains stays within the basic rate band (£50,270 in 2025/26), you pay 18%. Any gain above that threshold is taxed at 24%.
All shares in the same fund or ETF are pooled together. When you buy more, the pool’s total cost increases. When you sell, you use the average cost per share from the pool — not the cost of specific lots. This is the Section 104 pooling rule.
The exception is the 30-day matching rule: if you sell and rebuy the same asset within 30 days, the repurchase is matched first, preventing you from crystallising a loss while maintaining the same position.
The annual exempt amount has been cut sharply — from £12,300 in 2022/23 down to £6,000 in 2023/24 and £3,000 in 2024/25 onwards. This makes tax-free gains realisation far less valuable than it used to be and increases the importance of the ISA wrapper.
The allowance cannot be carried forward — use it or lose it each tax year. You can use it by selling profitable ETFs and rebuying (but not within 30 days of the same asset), known as Bed and ISA if you immediately shelter the proceeds.
Bed and ISA is the process of selling investments held in a general investment account (GIA) and immediately rebuying them inside an ISA. You crystallise a gain (or loss) and shelter the asset permanently. The 30-day rule does not apply because the repurchase is inside a different wrapper.
The practical constraint is your remaining ISA allowance. If your GIA holds £50,000 of ETFs, you can only move £20,000 per tax year — meaning it takes at least three years to fully shelter a position of that size.
If your total proceeds from disposals exceed £50,000 in a tax year, or your gains exceed the annual exempt amount, you must report the gain. You can do this via Self Assessment or — if you have no other reason to file — through the HMRC real-time CGT reporting service (within 60 days of a property sale; for other assets via Self Assessment by 31 January).
Losses can be carried forward indefinitely and offset against future gains. Always keep records of your purchase price, ERI added to your cost base, and disposal proceeds for each ETF.
Dividend tax for UK investors
Dividends from shares, distributing ETFs, and investment trusts are taxed separately from capital gains. The annual dividend allowance has been cut from £5,000 (2022/23) to £500 (2024/25 onwards). For a higher-rate taxpayer receiving £5,000 of dividends per year, this change alone costs roughly £1,500 in additional annual tax outside an ISA.
Dividends are added to your income after salary and other earnings. The £500 allowance is used first. The remaining dividend income is taxed at the rate corresponding to the income band it falls into — not your overall income tax rate.
For example: if your salary takes you to the top of the basic rate band and you then receive £2,000 of dividends, the first £500 is free, and the remaining £1,500 is taxed at the higher dividend rate (33.75%) even though your salary alone would have been at basic rate.
Distributing ETFs pay income directly to your account — this is straightforward dividend income, reported and taxed in the year received. Accumulating ETFs do not pay out — but the income generated inside the fund is still taxable as Excess Reportable Income (covered in the ETF rules section below).
For UK investors outside an ISA, accumulating ETFs do not eliminate the annual income tax bill — they just change its form. Inside an ISA, the distinction is irrelevant because neither is taxed.
A globally diversified UCITS ETF (e.g. a world equity fund) typically yields 1.2–1.8% per annum. At £20,000 invested, that is roughly £240–£360 in annual dividends — within the £500 allowance. But at £50,000 invested, you could be generating £600–£900 in dividends, putting some income above the allowance. This is the break-even point at which ISA sheltering starts to have meaningful annual tax impact for average-yield equity ETF investors.
ISA and SIPP: your two tax shelters
The UK has two powerful tax wrappers for investors: the ISA (Individual Savings Account) and the SIPP (Self-Invested Personal Pension). Using them correctly eliminates most of the complexity above. The primary difference is access: ISA money is accessible at any time; SIPP money is locked until age 57 (rising to 57 from 2028).
- £20,000 annual allowance (all ages 18+)
- All capital gains and dividend income permanently tax-free
- No CGT, no dividend tax, no income reporting required
- Allowance resets every 6 April — does not carry over
- Can split across multiple ISA types (Cash, S&S, IFISA) but total cannot exceed £20,000
- Withdrawals allowed at any time with no tax consequence
- ISA holdings do not appear on your self-assessment tax return
- Annual allowance: £60,000 (or 100% of earnings, whichever is lower)
- All growth and income inside the pension is tax-free
- Contributions receive basic rate tax relief automatically (20% added at source)
- Higher and additional rate taxpayers claim additional relief via self-assessment
- Cannot access before age 57 (rising from 55 in 2028)
- At retirement: 25% of the pot as tax-free cash, remaining income taxed as salary
- Pension assets fall outside your estate for inheritance tax purposes
The LISA allows up to £4,000 per year (within the £20,000 ISA limit) and HMRC adds a 25% bonus — up to £1,000 per year. Open only to those aged 18–39. The bonus is paid monthly into the account and can be invested.
You can only withdraw penalty-free to buy your first home (property up to £450,000) or from age 60. Withdrawing for any other reason costs a 25% penalty on the full withdrawal — which effectively claws back the bonus plus a portion of your own money. Use with caution.
For most investors: fill the ISA first for flexibility, then SIPP for tax relief on contributions — especially if you are a higher or additional rate taxpayer (40%/45% effective relief on contributions is extremely valuable).
The simplest rule: any investment you want access to before age 57 goes in the ISA. Long-term retirement money, where you want to maximise tax relief on contributions and are comfortable with the lock-in, goes in the SIPP.
Reporting Fund Status and Excess Reportable Income
Most ETFs available to UK investors are domiciled offshore — typically in Ireland or Luxembourg. HMRC has specific rules for how offshore fund gains are taxed, and whether a fund qualifies for capital gains treatment depends entirely on its Reporting Fund Status.
A fund with HMRC Reporting Fund Status agrees to report its income to HMRC annually and treat unitholders as if they received that income — even if the fund retains it (accumulating). In return, gains on disposal are taxed as capital gains (18%/24%).
A fund without RFS — a “non-reporting” fund — is taxed entirely as income on disposal. That means your capital gain could be taxed at up to 45% (additional rate income) instead of 24% CGT. All mainstream iShares, Vanguard UCITS, Xtrackers, and Invesco ETFs hold Reporting Fund Status. You can verify any fund on the HMRC list at gov.uk.
ERI is the income a reporting fund generates but does not distribute — the “phantom dividend” of accumulating ETFs. Even though you receive no cash, HMRC taxes ERI in the year the fund’s reporting period ends (typically 31 March or 30 June, with 6 months to report).
You report ERI as dividend income on your self-assessment. The positive side: the ERI amount is added to your cost base, reducing your future capital gain when you sell. This prevents double taxation — but requires meticulous record-keeping if you hold accumulating ETFs outside an ISA for many years.
Fund managers publish ERI reports annually on their websites. iShares publishes per-unit ERI figures for all their UCITS ETFs. Vanguard UK publishes them via their “Income equalisation” and reporting documents. Some brokers (notably Hargreaves Lansdown) provide ERI summaries in your tax documents.
ERI is reported per unit held on the last day of the fund’s reporting period. Multiply the per-unit ERI figure by your units held on that date. Keep this number — you will need it as a cost base adjustment when you eventually sell.
Unlike the EU (where acc ETFs can genuinely defer annual tax in some countries), UK investors must pay income tax on ERI from accumulating ETFs every year regardless. The deferral benefit does not exist for UK investors outside an ISA.
The main advantage of acc ETFs for UK investors is operational simplicity — no dividend income to reinvest, and in an ISA this is entirely irrelevant. Outside an ISA, distributing ETFs may actually be simpler to report, since the dividend income is clearly stated on your broker’s tax certificate rather than requiring you to hunt down ERI documents.
Ireland has a favourable tax treaty with the US, meaning Irish-domiciled ETFs holding US equities pay only 15% withholding tax on US dividends (vs 30% for UK-domiciled or Luxembourg-domiciled funds without treaty protection). For a global equity ETF with significant US exposure, this treaty benefit compounds meaningfully over time.
This is why almost all mainstream UCITS ETFs are domiciled in Ireland: iShares Core, Vanguard UCITS, Xtrackers, Invesco. As a UK investor, you benefit from this 15% rate automatically by holding these funds — no action required. The gross return you see in the fund’s TER-adjusted performance already reflects this treaty benefit.
Year-end tax planning for UK investors
The UK tax year runs from 6 April to 5 April. The period from January to early April is the most important window to review your position. With the CGT allowance now just £3,000 and the dividend allowance £500, the value of active tax year-end management has declined — but the ISA top-up remains the single most impactful annual action most UK investors can take.
- Top up your Stocks and Shares ISA to the £20,000 limit if possible
- Consider Bed and ISA — sell GIA holdings and rebuy inside the ISA
- Review unrealised gains in your GIA — crystallise up to the £3,000 exempt amount
- Offset any realised losses against gains where applicable
- Collect ERI figures for any accumulating ETFs held outside an ISA
- Check your SIPP contributions and maximise tax relief if you have earnings capacity
For most UK investors building long-term wealth in ETFs, the most tax-efficient structure is straightforward: put everything inside the ISA first. Once the ISA is full, use the SIPP for additional contributions if you have higher-rate tax relief to claim.
Only invest in a general investment account (GIA) once both wrappers are exhausted. In the GIA, prefer accumulating ETFs if your income from the portfolio is within the £500 dividend allowance — and keep meticulous ERI records from day one. Rebuilding those records years later is slow and error-prone.
Open a Stocks and Shares ISA
The ISA eliminates CGT, dividend tax, and ERI complexity in one step. All three brokers below offer a Stocks and Shares ISA with broad UCITS ETF access.
Capital at risk. Tax rules are subject to change. Not financial or tax advice — consult a qualified adviser for your specific situation.
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Frequently asked questions
What is the capital gains tax rate on investments in the UK?
For the 2025/26 tax year, capital gains on investments (shares, ETFs, funds) are taxed at 18% for basic rate taxpayers and 24% for higher and additional rate taxpayers. These rates were increased in the October 2024 budget from the previous 10%/20%. The annual CGT allowance is £3,000 — gains below this threshold are tax-free.
What is the dividend tax allowance in the UK for 2025/26?
The dividend allowance is £500 per tax year. Dividend income above this is taxed at 8.75% (basic rate), 33.75% (higher rate), or 39.35% (additional rate), depending on which income tax band the dividends fall into. Dividends received inside an ISA or SIPP are tax-free and do not need to be reported.
How much can I put in a Stocks and Shares ISA each year?
The ISA annual subscription limit is £20,000 per tax year (6 April to 5 April). You can split this across different ISA types — Cash, Stocks and Shares, Innovative Finance, and Lifetime ISA (capped at £4,000) — but your total contributions across all ISAs cannot exceed £20,000. All growth and income inside the ISA is permanently tax-free, with no CGT, no dividend tax, and no requirement to report on self-assessment.
What is Reporting Fund Status and why does it matter for UK ETF investors?
Reporting Fund Status (RFS) is an HMRC designation for offshore funds. If your ETF has RFS, disposal gains are taxed as capital gains (18% or 24%). If it does not have RFS, all gains — including what would otherwise be capital gains — are taxed as income at up to 45%. Almost all mainstream UCITS ETFs from iShares, Vanguard, Xtrackers, and Invesco hold HMRC Reporting Fund Status. You can verify any fund on the HMRC list at gov.uk.
Do accumulating ETFs pay tax in the UK?
Yes. With accumulating ETFs, the income generated inside the fund is not paid out — but HMRC treats it as if you received it. This notional income is called Excess Reportable Income (ERI). You must report and pay tax on ERI each year even though you received no cash. ERI figures are published annually by the fund manager. The amount paid in ERI tax is added to your cost base, reducing your capital gain when you eventually sell. Inside an ISA, none of this applies — accumulating ETFs are fully tax-free with no reporting required.
QuantRoutine provides educational content only. Nothing on this page is tax advice or a recommendation to buy, sell, or hold any security. UK tax rules are subject to change. Consult a qualified tax adviser for advice specific to your situation. Investments can lose value, and past performance does not guarantee future results. Always review each broker’s current terms, fees, and eligibility on their official website before opening or funding an account.