SEIS and EIS Anti-Avoidance: The Risk-to-Capital Condition Explained

SEIS and EIS are deliberately generous, and that generosity is policed by a layer of anti-avoidance rules designed to make sure the relief flows to genuine risk capital backing real trading companies. The rules ask whether a transaction looks like investment in a young business or whether it looks like a tax-driven arrangement dressed up as one. This article is part of our SEIS and EIS series and sits beneath the flagship pillar, the complete SEIS and EIS founders guide at /guides/seis-eis-guide-uk-startups/, which is the right starting point if you have not yet read it.

It pairs with two companion articles in the same drop. The first walks through the three-year holding period and the disposal events that can withdraw relief at /blog/seis-eis-three-year-holding-period-disposal-events/. The second covers founders holding several roles at once, where the director, employee and investor lines blur, at /blog/seis-eis-founder-multiple-roles-director-employee-investor/. Together the three articles cover the motive test, the holding test and the role test that HMRC apply when they look at a SEIS or EIS round.

The schemes exist to subsidise genuine risk-taking by outside investors in young, trading companies. If an arrangement looks like a way to convert other taxable income into reliefed investment, or to take a cash return out of the company while wearing the badge of an SEIS or EIS investor, the policy purpose collapses. The anti-avoidance rules therefore sit alongside every other eligibility condition: even if the company, the shares and the investor all tick the structural boxes, relief can still be denied if the arrangement is judged to have tax avoidance as a main purpose.

In practice, that means founders cannot rely on a checklist alone. A round that satisfies the gross assets test, the age test and the connection test can still fail if the wider picture suggests the investment is engineered to extract a tax outcome rather than to fund a trading business. The motive question is the lens through which the rest of the conditions are read.

At the heart of the SEIS rules in ITA 2007 Part 5A, and the EIS rules in ITA 2007 Part 5, is a condition that the shares must not have been issued, and the investment must not have been made, as part of a scheme or arrangement the main purpose, or one of the main purposes, of which is the avoidance of tax. The condition is stated broadly on purpose, so that arrangements that pass the mechanical tests can still be caught.

Two parts of the wording matter. The first is the word "main": HMRC are not asking whether tax was considered, since tax is openly the point of the relief. They are asking whether tax avoidance was a primary driver of how the deal was structured. The second is the word "scheme or arrangement": the test looks at the whole picture, not just the share issue in isolation. Side agreements, related transactions and circular flows of money are all in scope.

The risk-to-capital condition was introduced to push the schemes back towards genuine growth investment. It asks two principal-based questions about the issuing company at the time of the share issue. First, does the company have objectives to grow and develop its trade in the long term. Second, is there a significant risk that the investor will suffer a loss of capital that is greater than any net return.

A company that fails either limb does not qualify, even if every other box is ticked. The test was designed to filter out asset-backed arrangements offering investors a soft landing, structured exits or preferential returns. It is a principles-based test, so HMRC look at the substance of the company and the deal, not just the legal form of the share class.

A handful of structures recur in HMRC enquiries because they each undermine one of the rules above. The list below is not exhaustive, but it captures the shapes most likely to attract a question.

• Investor money that loops back to the investor through related-party arrangements, loans or service agreements.
• Preferential shares that look ordinary but carry preferred dividends, redemption rights or priority on a winding up.
• Side letters promising a guaranteed exit, a put option, a buy-back or any other downside protection.
• Companies with little trading substance whose main asset is a tax-attractive licence, lease or income stream.
• Pre-arranged disposals timed to crystallise CGT exemption without genuine commercial reason.
• Investment in a company that depends largely on a related party for its trade or its customers.

Both schemes require the shares to be ordinary shares carrying no present or future preferential right to dividends and no preferential right to assets on a winding up. The rule is stricter than founders expect, because it bites on rights that might never be exercised. A right to a cumulative dividend, a fixed-rate dividend, a priority distribution on liquidation, or any priority over other shareholders, can fail the test even if it has not yet paid out anything.

This is one of the most common technical traps for first-time founders who have copied a share class from a US-style term sheet. Preferred shares with liquidation preferences, common in venture deals abroad, do not qualify. The fix is to use plain ordinary shares for SEIS and EIS investors, even where other classes exist for non-relief capital. Where a company has a more complicated capital structure, the share class used for the relief round needs to be checked line by line.

Sitting above the scheme-specific rules is the General Anti-Abuse Rule (GAAR), introduced in the Finance Act 2013. The GAAR can counter arrangements that would otherwise produce a tax advantage but that cannot reasonably be regarded as a reasonable course of action in relation to the tax provisions concerned. It is a backstop applied with caution, but its existence reinforces the message that the SEIS and EIS rules are not a series of mechanical boxes to be gamed.

In practice, a round that passes the SEIS or EIS anti-avoidance conditions and the risk-to-capital test is unlikely to be challenged under the GAAR as well. But the GAAR is the reason that aggressive interpretations of the scheme rules carry real risk: even if a technical reading favours the taxpayer, the wider rule may catch the arrangement.

Across all of the above, the watchword is substance. HMRC look at the company commercial reality: does it have a product, customers or a credible plan to acquire them, employees doing genuine work, a balance sheet that reflects trading activity rather than a shell. They look at the round commercial reality: was it marketed on commercial terms to investors taking real risk, with no side promises softening the downside.

A young company will inevitably have less to show on those measures than a mature one, and that is exactly why the schemes exist. The point is not that an early company has to demonstrate revenue, but that it has to demonstrate it is trying to be a trading company rather than a wrapper for a tax outcome. Board minutes, business plans, hiring decisions and customer pipelines are all part of how that substance is evidenced.

The errors below recur often enough in HMRC enquiries that they are worth checking against your own round before you issue the shares.

• Issuing a share class with even a small dividend or liquidation preference, then claiming it is "effectively" ordinary.
• Promising a specific exit window or a buy-back to attract a reluctant investor.
• Routing investor money into a related company, a personal loan or a service contract that returns value to the investor.
• Treating a passive holding vehicle as the SEIS or EIS company, where the trade actually sits in a subsidiary or partner entity.
• Marketing the round on the basis of "guaranteed" returns or "secured" assets, language that signals failure of the risk-to-capital test.

When you should pause and take advice

If any part of your round involves related-party arrangements, side letters, unusual share classes, or a company structure where the trade and the investment sit in different entities, the anti-avoidance rules deserve a careful look before shares are issued. The cost of getting this wrong is not just rejected relief: it can be the unwinding of every investor relief in the round, with reputational consequences for future fundraising.

Advance assurance is the practical way to test a round against HMRC view before money is committed. The application asks for the business plan, the latest accounts, draft articles, the share class to be issued and the names of intended investors. Where there is anything unusual in the structure, advance assurance is also the moment to disclose it: HMRC have the information they need to comment, and the founders have a clear signal of whether the structure will hold.

Advance assurance is not a guarantee. It is given on the basis of the information supplied and can be revisited if the facts change. But it is the single best tool a founder has for de-risking the motive question before issuing shares, particularly where the round involves anything beyond a vanilla angel subscription on standard ordinary shares.

The anti-avoidance rules do not operate in isolation. They sit alongside the other eligibility conditions covered in the flagship pillar at /guides/seis-eis-guide-uk-startups/ and in the earlier spokes on scheme differences at /blog/seis-vs-eis-key-differences-founders-must-know/, connected persons at /blog/founders-family-seis-30-percent-connected-person-rule/ and investment limits at /blog/seis-eis-investment-limits-how-much-you-can-raise/. A round that fails the connected-person test or breaches the company cap is not rescued by good motives; equally, a round that ticks the structural boxes can still be lost on anti-avoidance grounds.

The schemes are open to founders who use them as Parliament intended, and they are unforgiving of founders who try to engineer the rules. If your round looks like a young trading company raising risk capital from outside investors on ordinary shares with no side deals, the motive tests are not something to fear. If any part of the deal departs from that picture, the anti-avoidance rules become the most important paragraphs in the legislation. The detail is complex and the consequences are severe, so for any borderline case treat this article as orientation and take professional advice on the specific facts.