Browse Taxation

Seed Enterprise Investment Scheme (SEIS): Supporting Early-Stage Companies

An overview of the Seed Enterprise Investment Scheme (SEIS), a government initiative designed to support very early-stage companies.

The Seed Enterprise Investment Scheme (SEIS) is a UK government initiative aimed at encouraging investment in very early-stage companies. It provides a range of tax reliefs to individual investors who purchase new shares in those companies.

Eligible Companies

To qualify for SEIS, a company must:

  • Be based in the UK.
  • Be less than 2 years old.
  • Have fewer than 25 employees.
  • Have less than £200,000 in gross assets.

Investors

Individual investors must:

  • Not be an employee of the company (though they can be a director).
  • Hold shares for a minimum of 3 years.
  • Invest up to £100,000 per tax year.

Launch of SEIS

  • April 2012: SEIS is launched by HM Treasury as part of the Finance Act 2012.

Amendments and Enhancements

  • 2014: Increased scope for investment and streamlined application processes.
  • 2020: Temporary changes in response to the COVID-19 pandemic to aid struggling startups.

Income Tax Relief

Investors can claim up to 50% tax relief on investments up to £100,000 per tax year.

Capital Gains Tax (CGT) Exemption

Gains on SEIS shares are exempt from CGT after three years of holding the shares.

Loss Relief

Investors can offset losses against their income tax, providing further financial protection.

Inheritance Tax Relief

Shares held for more than two years may be exempt from inheritance tax.

Investment Process

  • Find a Qualifying Company: Use networks and SEIS platforms.
  • Invest and Apply for SEIS: Purchase new shares and submit claims for tax reliefs.
  • Hold and Benefit: Maintain shares for a minimum of 3 years to maximize tax advantages.

Mathematical Model

Income Tax Relief Calculation

$$ \text{Relief} = \text{Investment Amount} \times 0.50 $$

Example:

$$ \text{Investment Amount} = £50,000 $$
$$ \text{Relief} = £50,000 \times 0.50 = £25,000 $$

Economic Growth

SEIS boosts startup funding, driving innovation and job creation.

Investor Benefits

Reduces financial risks, making early-stage investments more attractive.

Entrepreneurial Support

Offers vital initial funding to help startups grow and scale.

SEIS vs. EIS

Feature SEIS EIS
Target Companies Very early-stage companies Established startups
Investor Limit £100,000 per tax year £1,000,000 per tax year
Tax Relief 50% 30%
Company Age Limit Less than 2 years Less than 7 years
Gross Assets Less than £200,000 Less than £15 million

FAQs

Q: Who can invest in SEIS companies?

A: Individual investors who are not employees of the company but can be directors.

Q: What is the holding period for SEIS shares?

A: A minimum of 3 years.

Q: Can SEIS investments be combined with other schemes?

A: Yes, investments can also qualify for Venture Capital Trusts (VCT) and other funding schemes.
Revised on Monday, May 18, 2026