Sohrab Vazir
Consultant | Founder | Global Citizen
SEIS vs EIS: Understanding the UK’s Startup Investment Schemes
The United Kingdom is one of the world’s most supportive environments for startups, especially when it comes to funding early-stage ventures. Two of the most powerful tools available to attract investors are the Seed Enterprise Investment Scheme (SEIS) and the Enterprise Investment Scheme (EIS).
If you’re a founder seeking funding or an investor looking for tax-efficient opportunities, understanding the difference between SEIS and EIS is crucial.
What Is SEIS?
The Seed Enterprise Investment Scheme (SEIS) was created by the UK government to encourage investment in very early-stage startups: those still developing their product or entering the market.
Key SEIS Criteria for Companies
To qualify for SEIS, your company must:
- Be UK-based and carry out a qualifying trade
- Have been trading for less than 2 years
- Employ fewer than 25 full-time staff
- Have gross assets under £350,000
- Raise a maximum of £250,000 through SEIS
Benefits for SEIS Investors
Investors receive significant incentives, including:
- 50% income tax relief on investments up to £100,000 per tax year
- Capital Gains Tax (CGT) exemption on any profit after 3 years
- Loss relief if the company fails, reducing the financial risk
These benefits make SEIS one of the most generous startup investment schemes in Europe.
What Is EIS?
The Enterprise Investment Scheme (EIS) targets more established startups and growth-stage businesses seeking to scale.
Key EIS Criteria for Companies
To qualify for EIS, your company must:
- Be UK-based and less than 7 years old (or 10 years for knowledge-intensive businesses)
- Have fewer than 250 employees (or 500 for knowledge-intensive)
- Hold gross assets below £15 million before investment and £16 million after investment
- Raise up to £12 million in total (or £20 million for knowledge-intensive companies)
Benefits for EIS Investors
EIS investors enjoy:
- 30% income tax relief on investments up to £1 million per year
- Capital Gains Tax deferral on reinvested gains
- No CGT after 3 years if shares are held
- Loss relief if the company fails
EIS is particularly attractive for high-net-worth individuals and venture capital firms looking to invest in scale-ups.
SEIS vs EIS: Side-by-Side Comparison
| Feature | SEIS | EIS |
|---|---|---|
| Company age | Up to 2 years | Up to 7 years (10 for KICs) |
| Maximum raise | £250,000 | £12m (£20m for KICs) |
| Employee limit | 25 | 250 (500 for KICs) |
| Investor tax relief | 50% | 30% |
| Investor limit | £100,000/year | £1,000,000/year |
| Stage | Pre-seed / seed | Growth / scale-up |
(KIC = Knowledge-Intensive Company)
Why SEIS and EIS Matter for Founders
For entrepreneurs, SEIS and EIS can make your business significantly more attractive to investors. When investors know their tax exposure is reduced, they are more likely to back riskier, early-stage ideas.
By becoming SEIS or EIS-approved:
- You stand out in investor pitch decks
- You reduce friction during fundraising
- You build trust with UK-based angels and VCs
It’s common for startups to start with SEIS for their seed round, then move to EIS as they grow.
Why SEIS and EIS Matter for Investors
For investors, both schemes are a strategic way to diversify portfolios while benefiting from generous tax reliefs.
- SEIS is ideal for those seeking high-risk, high-return early-stage exposure.
- EIS suits investors looking for growth-stage opportunities with a moderate level of risk and steady scalability.
Combined, they offer a pathway to support innovation while offsetting tax liabilities.
How to Apply for SEIS or EIS Approval
Companies can apply through HMRC’s advance assurance process, which provides investors confidence that the business qualifies before funds are raised.
Founders typically work with advisors or consultants who prepare:
- A compliant business plan and financial forecast
- A clear explanation of innovation and scalability
- Legal and structural documentation (share allocation, Articles of Association, etc.)
Whether you’re a startup founder or an investor, understanding SEIS and EIS is key to navigating the UK’s startup funding ecosystem.
SEIS is perfect for seed-stage ventures that need proof-of-concept capital.
EIS is ideal for growth-stage businesses ready to scale.
Both schemes represent a win-win: startups get access to crucial funding, and investors enjoy substantial tax benefits.
