SEIS can raise a small company up to £250,000 in tax-advantaged funding, but every qualifying condition has to be met not just on the day the shares are issued, but for years afterwards. Get the structure wrong and the exposure lands on your investors, not just the company.
On this page
- What SEIS offers a company
- The company-level qualifying conditions
- Qualifying and excluded trades
- The risk-to-capital condition
- Advance assurance: process and limits
- The compliance statement (SEIS1)
- Disqualifying events after the raise
- SEIS and EIS: sequencing and the interaction rule
- Practical steps for founders
- FAQs
What SEIS Offers a Company
The Seed Enterprise Investment Scheme is designed to help very early-stage trading companies access equity funding by making the investment tax-advantaged for individual investors: 50% income tax relief on the amount invested, exemption from capital gains tax on eventual disposal of the shares (provided income tax relief was given and not withdrawn), and the ability to defer or exempt other capital gains reinvested into SEIS shares. For the company, the practical effect is that SEIS-qualifying status makes the round materially more attractive to individual angel investors than an equivalent unrelieved investment, often the difference between raising and not raising at the pre-revenue or early-revenue stage. The scheme is limited to genuinely small, young trading companies, reflecting its purpose of supporting early-stage risk capital rather than established businesses.
The Company-Level Qualifying Conditions
At the date the shares are issued, the company (or, where relevant, the qualifying subsidiary structure) must satisfy each of the following conditions. The company must have been carrying on the qualifying trade, or preparing to carry it on, for less than three years. Gross assets, valued immediately before the share issue, must not exceed £350,000, a limit increased from £200,000 for shares issued on or after 6 April 2023. The company must have fewer than 25 full-time equivalent employees at the time of issue. The company must not be a subsidiary of, or controlled by, another company, reflecting the requirement for genuine independence. The company must not have raised more than £250,000 in total SEIS investment across its lifetime, the cumulative cap also increased from £150,000 for shares issued on or after 6 April 2023.
Qualifying and Excluded Trades
The company must exist wholly, or substantially wholly, for the purpose of carrying on one or more qualifying trades, or be the parent of a qualifying group carrying on such trades. A list of excluded activities, largely mirroring the equivalent EIS exclusions, removes certain sectors from qualification regardless of how the business is otherwise structured, including dealing in land, commodities, or financial instruments; dealing in goods otherwise than in the course of an ordinary trade of wholesale or retail distribution; banking, insurance, money-lending, debt-factoring, hire-purchase financing, or other financial activities; leasing (including letting ships on charter or other assets on hire); legal or accountancy services; property development; farming or market gardening; forestry and timber production; operating or managing hotels, or comparable establishments, and nursing or residential care homes (subject to limited exceptions); generation of electricity, heat, gas, or fuel qualifying for a renewables obligation certificate or similar subsidy, in most circumstances; and providing services to another business where that other business's trade consists, to a substantial extent, of excluded activities and the two are under common control.
The Risk-to-Capital Condition
Since 2018, SEIS and EIS investments must also satisfy the risk-to-capital condition, which asks, broadly, whether the company genuinely intends to use the money raised for growth and development of the qualifying trade, and whether the investment carries a significant risk the investor could lose more capital than they stand to gain in net return, taking the transaction as a whole. HMRC has increasingly focused on this condition when reviewing advance assurance applications, particularly for structures that appear designed primarily to generate the tax relief with limited genuine trading risk, such as asset-backed structures or arrangements offering capital protection. A company applying for advance assurance should be prepared to demonstrate a genuine growth and development purpose, not simply that it technically meets the other qualifying conditions.
Advance Assurance: Process and Limits
Advance assurance is HMRC's non-statutory confirmation, given in advance of a share issue, that the proposed investment is likely to qualify for SEIS relief based on the facts presented. It is not compulsory, but in practice almost no sophisticated angel investor or syndicate will commit funds without it, since it materially de-risks the investor's own tax position. The application requires a detailed description of the company's trade and business plan, its structure and shareholding, its financial position against the qualifying limits, and, where the round is being marketed to specific prospective investors, their names and addresses; HMRC's guidance treats a commitment from investors accounting for at least 30% of the amount being sought as evidence of genuine investor interest supporting the application. Processing typically takes six to twelve weeks, and a well-prepared application, with a business plan and financial information addressing the qualifying and risk-to-capital conditions explicitly, secures a faster and more reliable outcome than a thin submission.
The Compliance Statement (SEIS1)
After the shares are issued, and once the company has been trading for at least four months (or has spent 70% of the money raised, if earlier), it must submit a compliance statement, form SEIS1, to HMRC, confirming that the qualifying conditions have been met and providing details of the investors and shares issued. HMRC reviews this statement and, if satisfied, authorises the company to issue compliance certificates (form SEIS3) to each investor, which the investor then uses to claim relief on their own tax return. Errors, omissions, or inaccuracies in the compliance statement are a significant source of later HMRC challenge, since an inaccurate statement can lead to certificates being treated as invalid even where the underlying investment was, in substance, qualifying.
Disqualifying Events After the Raise
Company-level disqualifying events within the relevant period, generally three years from share issue, can put the relief of every investor in the affected share issue at risk, not simply the company's ongoing funding. The most common triggers are the company ceasing to carry on a qualifying trade, the company becoming controlled by another company or losing its independence, the company being taken over other than through a permitted share-for-share exchange, the company breaching the risk-to-capital condition through a subsequent restructuring, and the company receiving further investment that, combined with the SEIS round, breaches the state aid or subsidy control limits applicable to early-stage risk finance schemes. Where a disqualifying event occurs, the company should notify HMRC promptly; failing to do so, and allowing HMRC to discover the issue independently, materially worsens the company's and its investors' position on any resulting penalties.
SEIS and EIS: Sequencing and the Interaction Rule
Many early-stage companies plan to raise a SEIS round followed by a larger EIS round as the business grows. The interaction rule requires that, where a company has raised both SEIS and EIS money, the EIS shares must generally be issued after the SEIS shares (or on the same day), and HMRC will scrutinise sequencing carefully where a company has structured funding rounds to maximise relief across both schemes. Getting the order wrong, for example issuing EIS shares before completing the SEIS compliance process, can jeopardise the EIS relief on the later round even where the SEIS round itself was properly conducted.
Practical Steps for Founders
- Get advance assurance before marketing the round. Prepare the application with a genuine business plan addressing the risk-to-capital condition explicitly, not just the numerical thresholds.
- Track the lifetime £250,000 cap precisely. Maintain a running total of all SEIS money raised to date, including any earlier rounds, to avoid inadvertently breaching the cumulative limit.
- File the SEIS1 compliance statement carefully. Errors here are a common source of later challenge; have the statement reviewed before submission, particularly where the company's structure or trade is at all unusual.
- Monitor the three-year qualifying period actively. Any material change to the company's structure, control, or trade during this window should be checked against the disqualifying event list before it happens, not after.
- Sequence SEIS and EIS rounds correctly. Complete SEIS compliance before issuing EIS shares, and take advice before running the two schemes close together.
Frequently Asked Questions
How much can a company raise under SEIS?
A maximum of £250,000 in total across the company's lifetime, increased from £150,000 for shares issued on or after 6 April 2023. This is cumulative and separate from any subsequent EIS funding.
What are the company-level qualifying conditions for SEIS?
Trading for less than three years, gross assets of no more than £350,000 before the share issue, fewer than 25 full-time equivalent employees, not controlled by another company, and carrying on a qualifying trade that is not excluded under the legislation.
Should a company get SEIS advance assurance before raising funds?
Yes, in practice almost essential since investors rarely commit without it. The company submits a pre-application to HMRC covering the trade, business plan and structure, typically taking six to twelve weeks.
What happens if HMRC challenges a company's SEIS compliance statement?
HMRC can refuse to authorise compliance certificates or treat issued certificates as invalid, requiring the company to notify investors so their own relief can be adjusted, exposing all investors in the round, not just the company.