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by Undo Capital
December 15, 2025
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What Is SEIS/EIS Compliance?

SEIS/EIS compliance refers to the rules a company must follow to qualify for the UK’s SEIS and EIS tax relief schemes and maintain investor eligibility.

SEIS/EIS Compliance Meaning

The SEIS/EIS compliance meaning centres on meeting HMRC’s strict requirements before, during and after investment. To define SEIS/EIS compliance in practice, a company must carry out a qualifying trade, issue qualifying ordinary shares, meet gross asset and employee limits, pass the risk-to-capital condition, and use funds for genuine growth within HMRC deadlines. Ongoing compliance includes submitting SEIS1/EIS1 forms, updating Companies House, avoiding disqualifying arrangements and maintaining eligible share structures. A clear SEIS/EIS compliance definition matters because failing to comply can invalidate investor tax relief. SEIS/EIS compliance stands for trust, transparency and investor confidence in early-stage fundraising.

Learn more about SEIS/EIS rules, eligibility and compliance at UndoCapital.

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Disclosure Notice: This communication is issued by Undo Capital Limited (“Undo Capital”) and is provided strictly for informational purposes only. It contains general information and should not be relied upon as accounting, business, financial, investment, legal, tax, or other professional advice. Undo Capital is not regulated by the Financial Conduct Authority (FCA) and does not provide investment, financial, or tax advice. Our services are designed to assist startups and businesses with company formation, legal agreements, and funding-related documentation. Nothing in this communication constitutes, or should be construed as, a recommendation, offer, or solicitation to purchase or sell any security or financial instrument.
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Undo Capital handles everything — SEIS/EIS, investor agreements, share issue, and filings — in one simple, automated platform.

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Disclaimer: Our services are designed to assist startups and businesses with company formation, legal agreements, and funding-related documentation. We do not provide investment advice, financial advice, or tax advice, nor are we regulated by the Financial Conduct Authority (FCA). Participating in startups and early-stage enterprises carries inherent risks, including limited liquidity, absence of dividends, potential loss of investment, and dilution. Any decisions regarding investments should be made independently by the investor as part of a well-diversified portfolio.