SEIS, EIS & VCT: the UK tax reliefs that pull in investors

When a potential investor asks what tax relief they would get on your deal, they are doing arithmetic, not making conversation. SEIS, EIS and VCTs are the UK government's mechanism for de-risking early-stage investment — they work by returning a meaningful slice of an investor's income tax and sheltering gains from capital gains tax. As a founder, knowing how these schemes operate is not optional financial literacy. It shapes how you structure your raise, who you can credibly approach, and whether an endorsing body reads your funding strategy as commercially realistic or theoretically constructed.

Why investors need an incentive to back startups

Most early-stage startups fail. That fact is baked into the economics of angel investing: a portfolio of ten bets might see seven go to zero, two return roughly the invested capital, and one generate enough to pay for everything else. For a rational investor comparing an unlisted startup against public markets, property, or even a savings account, the risk-reward profile can be hard to justify on its merits alone.

The UK government addressed this with a suite of venture capital relief schemes. By allowing investors to recover part of their outlay immediately through income-tax relief, and by eliminating or deferring the tax on gains when a company succeeds, the schemes shift some of the downside from private capital to the Exchequer. The policy logic is deliberate: innovation-led startups create jobs, IP and long-run tax revenues that more than compensate for the relief granted on early-stage funding.

The practical effect for founders is that UK angel networks and early-stage funds are often specifically seeking SEIS-eligible or EIS-eligible deals. Confirming your eligibility early removes friction and signals that you understand how your investors think about returns — which in itself is a mark of founder credibility.

SEIS, EIS and VCT compared

The three main schemes operate at different stages and structures.

Relief rates and limits shown are well-established as of the 2026/27 tax year. Verify current thresholds on GOV.UK before pitching investors or issuing shares.

What the reliefs mean for an investor in practice

Suppose a UK taxpayer invests £50,000 into a SEIS-qualifying company. They can immediately claim 50% — £25,000 — back against their income-tax bill for that year, provided they have sufficient liability. If the company subsequently fails and the investment is lost, they can also claim loss relief against income tax, so the effective downside on the full £50,000 investment can be considerably less than the face value of the cheque they wrote.

If the company succeeds and they sell their shares after three years, any capital gain is entirely exempt from CGT. In the best case — a profitable exit — an investor has recovered a large portion of their downside through tax on entry and pays zero on the upside. That is an unusually powerful incentive by international standards, and it is why well-run SEIS-eligible rounds can attract angels relatively quickly compared to equivalent businesses without the scheme.

EIS follows the same template but at 30% income-tax relief, with higher investment limits and for companies that are slightly larger or more established. EIS investors can also defer an existing CGT liability by channelling a gain into EIS shares — postponing the tax bill until they sell those shares or exit the scheme. This makes EIS particularly attractive to investors who are sitting on gains elsewhere in their portfolio.

VCTs are structurally different. An investor buys shares in a Venture Capital Trust — a listed pooled vehicle that deploys capital across a portfolio of qualifying businesses. The investor receives 30% income-tax relief on up to £200,000 per year, pays no CGT on disposal of their VCT shares, and receives dividends from the trust entirely tax-free. Because the VCT manager selects the portfolio companies, VCTs suit investors who want diversified exposure to early-stage startups without evaluating individual deals.

What your company must satisfy to qualify

SEIS and EIS qualification requires meeting statutory conditions set by HMRC. Investors claim their relief after shares are issued via an HMRC-issued compliance certificate (form SEIS3 or EIS3). Before raising, most founders apply for HMRC advance assurance — a pre-clearance confirming that the proposed company and investment structure likely qualify. It is free to apply and typically takes HMRC around 30 days to respond.

For SEIS, your company must generally:

• Have a UK permanent establishment and be genuinely trading from it
• Have gross assets below a specified statutory threshold at the time of the share issue
• Have fewer than 25 full-time-equivalent employees
• Not have been trading beyond a set number of years before the share issue
• Not have raised beyond the SEIS lifetime cap from prior investors under the scheme
• Operate in a qualifying trade — certain sectors including property development and financial services are excluded

For EIS, the thresholds are more generous:

• Gross assets below £15 million at the time of investment
• Fewer than 250 full-time-equivalent employees
• No more than 7 years since first commercial sale (10 years for knowledge-intensive companies)
• Raise amounts within the annual cap per year and lifetime cap overall

One structural point that many founders discover too late: only limited companies can issue SEIS or EIS-qualifying shares. Sole traders, partnerships and limited liability partnerships are excluded from both schemes. If investor fundability is central to your business model, your choice of entity is a strategic decision with direct financial consequences. See UK business structures explained for the full comparison.

Does qualifying signal viability to an endorsement assessor?

For UK Innovator Founder Visa applicants, the answer is yes — substantially. An endorsing body assessing your business plan under the viability pillar looks for evidence that credible third parties believe in your proposition with money, not just words. A funding strategy grounded in SEIS or EIS mechanics — where advance assurance has been sought, specific investors have engaged on qualifying terms, and the capital raise reflects realistic investor expectations — communicates both financial literacy and commercial traction.

By contrast, a business plan that projects raising £500,000 without reference to how investors would be incentivised, or that ignores the structural conditions that make a UK startup fundable, reads as theoretically assembled rather than practically grounded. Assessors are experienced enough to spot the difference. See the 24-month runway rule for how to think about your funding horizon, and the UK tax map for founders for the broader tax context your investors will expect you to understand.

For related context on the allowable expenses that flow from operating a SEIS or EIS-qualifying company, see allowable expenses: the 'wholly & exclusively' rule.

External references: SEIS for investors — GOV.UK · EIS for investors — GOV.UK · VCT tax reliefs — GOV.UK

Use the free assessment at /assess — five assessments, no card — to stress-test the viability section of your business plan against the endorsement criteria. For more in this series, see /insights.

Key takeaways

• SEIS gives investors 50% income-tax relief and CGT exemption on shares held three or more years — making very early-stage UK companies far more investable than equivalent businesses without the scheme.
• EIS provides 30% relief for investments in larger or more established companies, along with CGT deferral and exemption on exit; EIS-eligible rounds can raise higher amounts from a broader investor base.
• VCTs pool capital across a portfolio of qualifying companies, giving investors 30% income-tax relief, tax-free dividends and no CGT on disposal — suited to investors seeking diversified startup exposure.
• Only limited companies can issue SEIS or EIS-qualifying shares; entity structure is a strategic choice with direct fundraising and tax consequences.
• Applying for HMRC advance assurance before pitching removes ambiguity, speeds up due diligence, and signals to an endorsing body that your funding strategy is commercially grounded.

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