
What Is the EIS1 Form?
The EIS1 form is the official HMRC submission a company files after issuing EIS-qualifying shares to confirm the investment meets Enterprise Investment Scheme requirements.
EIS1 Form Meaning
The EIS1 form's meaning centres on securing investor tax relief. To define the EIS1 form in practice, it is submitted by the company once shares have been issued and the business has begun trading. The form confirms key details about the company, the investment and how the funds will be used. Once HMRC approves the EIS1, it issues EIS3 certificates to investors, which they need to claim their EIS tax relief. A clear EIS1 form definition marks the final compliance step that unlocks investor benefits.
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.
Participation in startups and early-stage enterprises involves significant risk. Such investments may be illiquid, may not generate dividends, may be subject to dilution, and may result in the total loss of invested capital. Any decisions or actions that may affect your business or personal interests should be taken only after seeking advice from suitably qualified professional advisors, and should form part of a balanced and diversified portfolio. This communication may contain links to third-party websites. The inclusion of such links does not imply endorsement, approval, investigation, or verification by Undo Capital. We accept no responsibility or liability for the content, accuracy, or use of information contained on any third-party websites. © 2025 Undo Capital Limited. All rights reserved. Reproduction is strictly prohibited.
