Last updated July 2026 · Reviewed by the SyndicateRoom investment team
The Enterprise Investment Scheme is a UK government initiative that has channelled private capital into early-stage companies since 1994 — over £30 billion to date. In the 2024/25 tax year alone, 3,735 companies raised £1,575 million under the scheme (HMRC, May 2026). In return for taking early-stage risk, investors receive one of the most generous packages of tax reliefs available in the UK.
The scheme gives UK investors 30% income tax relief on investments of up to £1 million per tax year. This allowance increases to £2 million when the first million is invested in Knowledge-Intensive Companies. Gains on shares held for three years are tax-free, losses attract relief, and shares qualify for inheritance tax relief after two years. The scheme was recently extended until at least April 2035.
Tax treatment depends on individual circumstances and may change. Reliefs also depend on companies maintaining qualifying status.
Investments are made by subscribing for new ordinary shares in EIS-qualifying companies — either directly or through an EIS fund that builds a portfolio of qualifying companies on your behalf. A common worry is that EIS creates a mountain of tax admin across multiple returns; in practice, all your EIS investments are reported on a self-assessment return.
Five separate reliefs apply. Together, they change the risk-reward mathematics of backing early-stage companies.
Claim 30% of the amount you invest against your income tax bill — £3,000 back on a £10,000 investment. You can apply the relief to the year you invest or carry it back one tax year. Read a detailed breakdown of how to claim EIS tax relief.
Pay no capital gains tax on profits from EIS shares held for at least three years, provided income tax relief was claimed and not withdrawn. How the five reliefs fit together.
If a company in your portfolio falls in value, your net loss (the investment minus the 30% relief already received) can be offset against income tax or capital gains tax at your marginal rate — recovering up to 45% of the remaining exposure for an additional-rate taxpayer. Read more about how EIS loss relief works.
A gain from selling any asset — a property, a business, a share portfolio — can be deferred by reinvesting it into EIS shares. The gain stays deferred for as long as it remains invested in EIS, and there is no limit on the amount that can be deferred this way. Deferral relief is also available where you are "connected" to the company — the connection restrictions apply to income tax relief, not deferral-only claims. Find out more about deferring a capital gain with EIS.
Unquoted EIS shares are business assets that qualify for 100% Business Relief once held for two years — provided they do not exceed the £2.5 million per-person allowance that came into force from 6 April 2026. That allowance is combined across all your business and agricultural assets, not EIS shares alone. It is also transferable between spouses. For assets that exceed the allowance, Business Relief falls to 50%, an effective inheritance tax rate of 20%. You can read more about EIS and inheritance tax here, and Business Relief in 2026 here.
What this looks like on a £10,000 investment
|
|
Company fails |
Breaks even |
Doubles in value |
|
EIS investment |
£10,000 |
£10,000 |
£10,000 |
|
Income tax relief |
−£3,000 |
−£3,000 |
−£3,000 |
|
Net investment |
£7,000 |
£7,000 |
£7,000 |
|
Proceeds on disposal |
£0 |
£10,000 |
£20,000 |
|
Loss relief |
−£3,150 |
— |
— |
|
CGT payable |
— |
nil |
nil |
|
Net profit/loss (incl. income tax relief) |
−£3,850 |
+£3,000 |
+£13,000 |
Calculations based on an additional-rate taxpayer. Combined, the reliefs cap downside exposure at 38.5p per £1 invested for a 45% taxpayer, provided the reliefs are claimed and retained — while gains remain untaxed. Illustration only. Tax Reliefs are subject to status and change.
Want to model your own numbers first? EIS tax relief calculator.
Most UK taxpayers can claim EIS relief. The main exclusions: you cannot be connected to the company — broadly, employees and anyone holding more than 30% of its shares — and your income tax relief cannot exceed the income tax you actually pay in the year. If you are unsure about your position, speak to a qualified tax adviser.
To qualify for EIS funding, a company must generally:
have made its first commercial sale within the last seven years
hold gross assets under £30 million before investment
employ fewer than 250 full-time equivalent staff
carry out a qualifying trade
Higher limits apply to knowledge-intensive companies — businesses whose activity centres on research, development or innovation.
Most EIS pages stop at the tax mechanics. The tax relief only matters if the underlying investments work — and SyndicateRoom has spent a decade studying what makes them work.
SyndicateRoom's analysis of UK Companies House data found that startup returns follow a power-law distribution with an alpha of 1.8 — a small number of outlier companies generate the majority of the market's returns. Read our full white paper showing our analysis and findings.
The implication for EIS investors is uncomfortable but useful: picking a handful of winners is statistically improbable, even for professionals. The same white paper analysis, drawn from 300,000 UK investor records, found just 183 investors — 0.06% — with a proven track record of returning more than five times their capital across portfolios of eight or more companies.
The same analysis, using Companies House and Beauhurst data, found that the UK startup and scale-up market as a whole grew by roughly 25–28% year on year across the decade studied — the fat tail sits atop a genuinely growing market.
Two practical conclusions follow. In a fat-tailed market, breadth beats conviction: SyndicateRoom's Monte Carlo simulations show that a portfolio built from 50 deals a year over three years — 150 companies — has a better than 50% probability of returning 3x the cash invested, while a portfolio of just five investments carries a more than 40% chance of losing money. We explore this further in our article "Why bigger is better". And if a tiny group of investors demonstrably beats the market, following their money is a strategy. This is the strategy Access EIS is built on: co-investing alongside the UK's top-performing angels. The portfolio probabilities are statistical findings from modelled portfolios, not a projection for any fund.
Directly. You pick individual EIS-qualifying companies, often through angel networks or crowdfunding platforms. You keep full control of what you back, take concentrated risk on a handful of companies, and receive one EIS3 certificate per investment.
Through an EIS fund. A fund manager builds the portfolio for you. You get diversification across dozens of companies, professional deal selection, and your EIS certificates handled in one place. Compare EIS funds.
The Access EIS Fund invests alongside the UK's top-performing angel investors, building each investor a portfolio of 30+ startups. The fund runs monthly tranches and closes to new investment for only a week between them — capital committed in the current tranche starts deploying sooner. Explore Access EIS.
Read our article to compare EIS and SEIS.
Read our article to compare EIS and VCT.
Understand the differences between ISAs and EIS.
Access EIS builds you a portfolio of 30+ data-selected startups from a £5,000 minimum. Monthly tranches — invest in the current one and your capital starts deploying sooner.
Advising clients or investing at scale? Schedule a call with Tom Britton.
Everything on this page, in depth: relief mechanics, qualifying rules, worked examples and how to claim — in one downloadable guide.
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