SEIS & EIS Tax Reliefs

Expert Guidance from The London Tax Company

At The London Tax Company, we specialise in helping startups, founders, and investors unlock the powerful tax advantages offered by the Seed Enterprise Investment Scheme (SEIS) and the Enterprise Investment Scheme (EIS) — two of the UK’s most generous government-backed incentives to support early-stage investment.

What Is SEIS?

The Seed Enterprise Investment Scheme (SEIS) is designed to help very early-stage companies raise capital by offering investors up to 50% income tax relief on investments up to £200,000 per tax year.

Key SEIS Benefits for Investors:

  • 50% income tax relief

  • Capital Gains Tax (CGT) exemption on profits after 3 years

  • 50% CGT reinvestment relief

  • Loss relief on unsuccessful investments

  • Inheritance Tax relief after 2 years (Business Property Relief)

For Founders:
SEIS can make your business significantly more attractive to investors. We can help you structure your business correctly and apply for HMRC Advance Assurance, which gives potential investors peace of mind that your company qualifies.

What Is EIS?

The Enterprise Investment Scheme (EIS) is a UK government-backed initiative designed to encourage investment into high-growth, early-stage companies by offering generous tax reliefs to qualifying investors.

Key EIS Benefits for Investors:

• 30% Income Tax Relief on investments up to £1 million per tax year — or up to £2 million when investing in Knowledge-Intensive Companies (KICs)
• No Capital Gains Tax on profits from qualifying EIS shares held for at least 3 years
• Capital Gains Tax deferral on gains reinvested into EIS shares
• Loss relief available if the investment fails
• Potential 100% Inheritance Tax relief after 2 years (subject to Business Relief rules)

Tax reliefs depend on individual circumstances and EIS qualification rules.

Why Founders Use EIS

The Enterprise Investment Scheme (EIS) doesn’t just benefit investors, it can be a powerful fundraising tool for founders too.

Key Benefits for Founders:
• Makes your company more attractive to angel investors and early-stage backers
• Helps raise larger investment rounds faster through valuable tax incentives
• Supports growth without relying on traditional bank finance
• Enhances credibility with HMRC advance assurance
• Can improve investor confidence in higher-risk startup opportunities

For many startups, EIS can be the difference between a difficult raise and a successful funding round.

How We Help

Whether you're an investor, founder, or advisor, we offer tailored support to ensure you or your business benefits from SEIS/EIS reliefs compliantly and effectively.

Our SEIS/EIS Services Include:

  • SEIS/EIS company qualification reviews

  • HMRC Advance Assurance applications

  • Investor tax claim support

  • Structuring advice for founders

  • Capital raising support materials (e.g. pitch decks, prospectuses)

Who We Work With

  • Startups seeking pre-seed and seed investment

  • High-net-worth individuals and angel investors

  • Family offices and early-stage funds

  • Growth-stage businesses applying for EIS

Why Choose The London Tax Company?

  • Deep tax and startup experience

  • High success rate with HMRC Advance Assurance

  • Fast, accurate documentation and support

  • Friendly, expert advisors

Ready to Get Started?

Speak to a specialist today to explore how SEIS and EIS can fuel your growth or reduce your tax burden.

Contact us now for a free initial consultation.