EIS Investment Guide UK 2026/27: 30% Tax Relief, CGT Deferral and IHT Benefits

What Is the Enterprise Investment Scheme?

The Enterprise Investment Scheme (EIS) is one of the UK government's flagship schemes for encouraging private investment in small and growing businesses. Launched in 1994, it offers a combination of tax reliefs to individual investors who subscribe for new shares in qualifying companies -- businesses that are typically too small or early-stage to raise capital from institutional investors.

EIS is available across many sectors, though HMRC has tightened rules over the years to target "genuine risk-to-capital" investments, excluding low-risk asset-backed or capital-preservation strategies. In practice, EIS investments range from seed-stage technology startups to established growth businesses approaching their first institutional round.

The scheme sits alongside the Seed Enterprise Investment Scheme (SEIS) -- for earlier stage companies -- and VCTs (Venture Capital Trusts), which offer similar but distinct benefits. Understanding the differences between these three is essential for effective planning.

The Five EIS Tax Reliefs

EIS offers a unique combination of five separate tax advantages. No other UK investment scheme combines all five.

1. Income Tax Relief at 30%

When you subscribe for new EIS shares, you reduce your income tax liability by 30% of the amount invested, up to:

• GBP1,000,000 per tax year in standard EIS
• GBP2,000,000 per tax year if at least GBP1,000,000 is in knowledge-intensive companies (KICs)

Example: Invest GBP50,000 in EIS-qualifying shares. Your income tax bill falls by GBP15,000.

You must hold the shares for at least three years to keep this relief. Selling within three years triggers a clawback.

The relief can be carried back to the previous tax year, which can be particularly useful if you want to offset a large one-off income (such as a bonus or sale of a business) that has already arisen.

Income tax relief is limited to the amount of tax you actually owe. You cannot receive a refund of more tax than you have paid. However, unused relief in excess of your current year's tax bill cannot be carried forward -- only carried back.

2. CGT Exemption on EIS Disposal

If you hold EIS shares for at least three years (from either the date of issue or the date the company commences trading, whichever is later), any capital gain on disposal is completely exempt from CGT.

This is not simply deferred -- the gain permanently disappears from the CGT calculation. Combined with the 30% income tax relief on entry, the effective tax treatment of a successful EIS investment is highly favourable.

For a higher-rate taxpayer investing GBP50,000:

• Income tax relief on entry: -GBP15,000 (reduces effective cost to GBP35,000)
• If shares double to GBP100,000 after three years: GBP50,000 gain is entirely CGT-free
• Net return: GBP100,000 received on a GBP35,000 net investment

3. CGT Deferral Relief

Separately from the disposal exemption, EIS allows you to defer a capital gains tax liability from any other asset disposal. If you sell a property, business, or investment and realise a gain, you can postpone the CGT by reinvesting an equivalent amount into EIS within:

• One year before the disposal, or
• Three years after the disposal

The deferred gain is "frozen" until you sell the EIS shares. At that point, the deferred gain becomes chargeable -- but it can be deferred again by making another EIS investment. This is a powerful tax planning tool for serial entrepreneurs or property investors with large accrued gains.

Note: CGT deferral relief is available to all investors including those with a higher-rate liability from residential property (24% rate in 2026/27). The deferral effectively gives you an interest-free loan of the deferred tax for the period of the EIS holding.

4. Loss Relief Against Income

If the EIS investment falls in value and you sell the shares at a loss, you can choose to offset that loss against your income (not just against capital gains). This is the "loss relief" or "income tax loss relief" benefit, unique to EIS and SEIS.

The mechanism is: take the loss after reducing by the income tax relief already received. So if you invested GBP50,000, received GBP15,000 income tax relief, and the company fails completely, your effective loss is GBP35,000. You can offset this GBP35,000 against income in the current or previous year, saving income tax at your marginal rate.

Example for a higher-rate taxpayer:

This does not make EIS investment risk-free, but it substantially reduces the downside.

5. Inheritance Tax Exemption via Business Property Relief

EIS shares that qualify for Business Property Relief (BPR) are completely exempt from inheritance tax after being held for just two years. The normal IHT nil rate band in 2026/27 is GBP325,000 (or GBP500,000 with the Residence Nil Rate Band for those passing a main home to direct descendants). EIS/BPR investments shelter unlimited amounts from IHT after two years.

Not all EIS shares automatically qualify for BPR -- certain activities are excluded (property holding, financial instruments, etc.). Always confirm BPR qualification with your adviser before relying on IHT planning benefits.

Knowledge-Intensive Companies (KICs)

The GBP2,000,000 annual limit (instead of GBP1,000,000) applies to investments in Knowledge-Intensive Companies. A KIC is broadly defined as a company that:

• Has incurred at least 15% of its operating costs on research and development (R&D) in one of the last three years, or 10% in each of the last three years, and
• Is carrying on an innovation-focused business

The purpose is to direct more capital into science, technology, and innovation-driven companies. Investors wishing to use the higher GBP2,000,000 limit must invest at least GBP1,000,000 in KICs.

EIS vs SEIS: What Is the Difference?

The Seed Enterprise Investment Scheme (SEIS) is designed for even earlier stage companies. The comparison:

SEIS offers a higher 50% income tax relief rate, but targets much younger and therefore riskier companies, and has a much lower annual limit. Many investors combine SEIS and EIS across a diversified portfolio of qualifying companies.

Practical Considerations

Due Diligence

The fundamental difference from a VCT is that EIS can involve direct investment in individual companies. This means you bear full concentration risk on each investment. Diversifying across multiple EIS companies -- typically through an EIS fund or portfolio service rather than a single company -- substantially reduces this risk.

EIS funds pool investors' capital and invest in a portfolio of typically 8-20 qualifying companies. This diversification reduces the risk of total loss from any single company while retaining the tax benefits.

Advance Assurance

The investee company can apply to HMRC for "advance assurance" that HMRC considers it likely to qualify. This is not a guarantee -- HMRC does not confirm EIS status until after shares are issued -- but it provides reasonable comfort. Reputable EIS funds will have reviewed HMRC's advance assurance for each investment.

HMRC Risk

EIS rules are complex and HMRC can challenge qualifying status -- both of the company at the time of investment and of subsequent trading activities. If an investee company breaches EIS conditions within three years, the tax reliefs can be withdrawn. This is an additional risk beyond investment performance risk.

Tax Certificates

After shares are issued, the company provides each investor with an EIS3 certificate. This must be submitted to HMRC (usually via Self Assessment) to claim the income tax relief and to register the CGT deferral. Keep these certificates safely; they are your evidence of entitlement to the reliefs.

Who Should Consider EIS?

EIS is particularly suitable for:

• Higher and additional rate taxpayers with a significant income tax liability
• Those with large embedded capital gains looking to defer CGT
• High-net-worth investors with an IHT exposure seeking to reduce their taxable estate
• Those who have already maximised pension (GBP60,000 allowance) and ISA (GBP20,000) contributions and are seeking additional tax efficiency

EIS is not appropriate as a primary investment vehicle or for investors who cannot tolerate the loss of most or all of their investment. The tax reliefs are generous precisely because the underlying investments are high risk.

Summary

The Enterprise Investment Scheme combines five meaningful tax benefits into one investment wrapper: 30% income tax relief, CGT-free disposal after three years, CGT deferral from other gains, loss relief against income, and IHT exemption via BPR after two years.

For higher and additional rate taxpayers with income above GBP50,271 in 2026/27, EIS can be an efficient part of a broader tax planning strategy -- particularly once pension and ISA allowances are exhausted. The key is to ensure the underlying investments are genuinely sound businesses (not just tax-driven), to diversify across multiple EIS companies or use a managed EIS portfolio service, and to obtain regulated advice before committing significant sums.

The downside risk is real -- EIS companies fail. But with careful structuring, the tax reliefs substantially reduce the effective cost of failure and make the overall risk-return profile more attractive than the headline investment risk suggests.