SEIS/EIS Advice
for startups

Strategic SEIS and EIS planning for UK startups seeking investment. Complete guidance on qualifying criteria, advance assurance applications, and investor documentation to maximise funding attractiveness.

SEIS provides 50% income tax relief to investors on subscriptions up to £200,000 per tax year per investor, plus capital gains tax exemption on the eventual sale of SEIS shares. The company can raise up to £250,000 of SEIS investment in its lifetime. EIS provides 30% income tax relief on subscriptions up to £1m per tax year (or £2m where the additional amount is invested in knowledge-intensive companies) and similar CGT exemption.

Advance assurance from HMRC is universally expected by investors and substantially de-risks the round. Both schemes have specific eligibility tests on the company (gross assets, employee count, qualifying trade) that must hold at the point of share issue and continuously for three years afterwards. Specialist preparation matters because the eligibility rules carry no margin for error.

SEIS and EIS are the two largest investment-side tax reliefs in the UK startup landscape, and together they make UK startup investment substantially more attractive than equivalent equity investment in almost any other developed economy. SEIS, introduced in 2012, provides 50% income tax relief on subscriptions up to £200,000 per tax year per individual investor (raised from £100,000 in April 2023), plus capital gains tax exemption on the eventual sale of SEIS shares held for three years or more, plus loss relief if the investment fails. EIS, the older scheme, provides 30% income tax relief on subscriptions up to £1 million per tax year (raised to £2m where the additional £1m is invested in knowledge-intensive companies), with similar CGT and loss relief. The schemes are designed to bridge the gap between friends-and-family seed capital and institutional venture capital, and most UK startups raising any institutional or angel capital under £2m do so under one or both schemes.

Eligibility for SEIS turns on five key tests at the company level. The company must be UK-based with a permanent establishment in the UK, must not be listed or have plans to list at the point of share issue, must have gross assets under £350,000 immediately before the share issue (raised from £200,000 in April 2023), must have fewer than 25 full-time equivalent employees, and must be carrying on (or planning to carry on) a qualifying trade. The qualifying trade test excludes a long list of activities including financial services, dealing in commodities, property development, legal and accountancy services, hotels, and a few specific sectors HMRC considers low-risk. The company must also be under three years old at the time of the SEIS share issue, calculated from the start of trading or the date of incorporation, whichever is later. SEIS investment is capped at £250,000 across the company's lifetime.

EIS eligibility is broader. The company must be UK-based, must not be listed (with limited exceptions for certain venture capital trusts), must have gross assets under £15m before the EIS investment and £16m after, must have fewer than 250 full-time equivalent employees (500 for knowledge-intensive companies), and must be carrying on a qualifying trade with the same exclusions as SEIS. The company must be under seven years old at the time of its first EIS investment (10 years for knowledge-intensive companies), with the age tested from the company's first commercial sale. EIS rounds can be raised up to £5m per year in most cases (£10m for knowledge-intensive companies), with a £12m lifetime cap (£20m for knowledge-intensive). For practical purposes, most UK startups outgrow EIS by Series A or Series B and transition to non-tax-advantaged investment.

Advance assurance is HMRC's pre-clearance mechanism for SEIS and EIS. While not strictly required to qualify, it's universally expected by serious investors because it confirms HMRC's view that the company will qualify for the relief, removing the risk that the company is later found ineligible and the relief clawed back. The application is a formal document submitted to HMRC's Venture Capital Schemes team, supported by the company's articles of association, business plan, financial forecasts, evidence of the qualifying trade, and confirmation that the share class to be issued is qualifying. HMRC's published target turnaround is six weeks; in practice this varies from three weeks for straightforward cases to several months for complex applications or during periods of high HMRC backlog. The application is often a productive forcing function - the questions HMRC asks are exactly the questions investor solicitors will ask in due diligence, and addressing them with HMRC first is cheaper than addressing them with three different investor counsels.

Share class and issuance mechanics matter for both schemes. SEIS and EIS shares must be ordinary shares (not preferred, redeemable, or convertible), must be fully paid up in cash at the point of issue (no deferred payment or part-paid arrangements), and must carry no preferential rights to dividends or capital except in limited specific circumstances. The shares must be issued in the names of the investors directly (not held through nominee structures except in specific approved cases) and must be issued for the purposes of raising money for a qualifying trade. The proceeds must be applied for the qualifying purposes (working capital, R&D, growth, hiring) within two years of the share issue. Common errors include: issuing the shares as preferred to attract a specific investor (disqualifies SEIS/EIS), issuing the shares part-paid to defer cash receipt (disqualifies), holding the shares through a nominee company (disqualifies in most circumstances), and using the proceeds for non-qualifying purposes such as buying out an existing shareholder.

The three-year qualifying period is the rule that catches many startups out. After the SEIS or EIS shares are issued, the company must continue to meet the qualifying conditions for three years - meaning it must continue to carry on the qualifying trade, must not breach the gross assets tests (significantly), must not become listed, and must apply the share-issue proceeds for the qualifying purposes. The investor's relief can be clawed back if the company breaches any condition during the three-year period. Breach risks include: pivoting into a non-qualifying trade (a software company that pivots to financial services), being acquired by another company (the acquisition typically ends qualifying status), using share-issue proceeds to repay loans or buy back shares (non-qualifying use), and growing past the gross assets or employee thresholds (less likely to cause immediate clawback but worth tracking). Companies committed to maintaining SEIS/EIS-friendly behaviour through the three-year window typically include language in Shareholders' Agreements requiring board approval for any structural change that could affect qualifying status.

Sequencing SEIS and EIS rounds in close succession requires careful timing. SEIS funds (up to the £250,000 lifetime cap) must be raised and used before EIS investment, with at least 70% of the SEIS proceeds applied to qualifying business purposes before EIS shares can be issued. Many startups structure their first round as a single round split into SEIS and EIS tranches, with the SEIS tranche issued first and the EIS tranche issued at least a few weeks later after the SEIS funds have been demonstrably applied. Issuing SEIS and EIS shares simultaneously, or issuing EIS before SEIS funds have been used, can disqualify the EIS portion. Investor documentation in mixed rounds typically includes specific language confirming the sequence and the application of funds, designed to satisfy both HMRC's compliance requirements and the investor's solicitors.

Existing employees and SEIS/EIS exclusions need attention. SEIS shares cannot be issued to investors who are 'connected' with the company at the time of subscription, where connected includes being a director or employee with more than 30% interest. EIS has similar but slightly different connection rules. For a typical early-stage round, this means the founders cannot subscribe for SEIS shares in their own company (they're already directors and substantial shareholders), and key employees who have received share grants need to be checked individually. Where an employee is a relative of a substantial shareholder, the connected-person rules can extend to them too. Most rounds avoid the issue by limiting SEIS/EIS shares to genuine external investors, with founder and employee equity routed through other structures (founder shares at incorporation, employee EMI options).

Knowledge-intensive company (KIC) status unlocks more generous EIS limits but requires additional tests. KIC status applies to companies that meet certain conditions on R&D expenditure (at least 10% of operating costs in one of the three years before the EIS investment, or at least 15% across all three years), or that are involved in producing intellectual property which could be expected to provide a substantial part of the company's business. KIC status increases EIS lifetime cap to £20m, increases the annual EIS round limit to £10m, extends the company-age test to 10 years from first sale, and increases the employee limit to 500. KIC status is determined at the time of the EIS investment based on the company's circumstances at that time, and can change between rounds. Most UK biotech, pharma, and deep-tech companies qualify for KIC status; most software companies don't unless they have a strong R&D position.

Share class restructures during a SEIS/EIS qualifying period need careful handling. Once SEIS or EIS shares have been issued, the company must continue to meet qualifying conditions including the share class structure. A subsequent restructure that creates new share classes with different rights (commonly required for institutional Series A rounds) can affect the qualifying status if not handled correctly. Where the new shares carry different rights than the SEIS/EIS shares, the addition of new classes is usually fine - it doesn't change the rights attached to the existing SEIS/EIS shares. However, a restructure that explicitly modifies the rights of the SEIS/EIS shares themselves (subordinating them, attaching different dividend rights, changing voting) can be problematic. The accountant should review any post-SEIS/EIS restructure for impact on qualifying status before it's implemented, not after.