SEIS Shares, Tax Relief and Liquidity at Year Three?

Every week this publication covers another piece of UK market infrastructure edging tokenisation from pilot toward permanence, a sandbox settlement, a feedback statement, a new PISCES admission. Almost none of it touches the part of the UK's startup finance system that most badly needs a liquidity answer: the earliest, smallest, highest risk shareholdings created under the Seed Enterprise Investment Scheme.

SEIS is the most generous tax incentive available to any investor backing a UK company. An investor gets up to 50 per cent income tax relief on amounts up to 200,000 pounds a year, and can also shelter any gain from capital gains tax and offset a loss against income if the company fails. A qualifying company can raise up to 250,000 pounds under the scheme across its lifetime, aimed squarely at businesses under three years old with fewer than 25 employees and modest gross assets. For a huge number of UK founders with no warm network into venture capital, SEIS relief is frequently the difference between a seed round closing and not closing at all.

The scheme's central design feature, and the one most commonly misunderstood, is the three year holding period. It is widely treated as a legal lock on the shares themselves. It is not. It is a condition attached to the tax relief. An investor can sell SEIS or EIS shares before the three years are up whenever they like. They simply forfeit the income tax relief on the shares they sell early, and may trigger a capital gains tax liability that would otherwise have been sheltered. The shares are not frozen. The tax benefit is conditional.

That distinction matters enormously once tokenisation and PISCES, the London Stock Exchange's Private Securities Market, enter the picture. This publication has argued before, and the position has not changed, that a tokenised SEIS shareholding can retain its qualifying status without difficulty, provided the underlying ordinary share is issued and filed in the conventional way and Companies House remains the authoritative register of legal ownership. The token, on this model, is a tradable representation sitting on top of a legal holding that continues to live inside a compliant nominee or custody structure, not a replacement for the share register.

What changes is what happens once the three year clock runs out. Today, a SEIS or EIS investor who wants to realise their shares without giving up relief typically waits far longer than three years in practice, because there is usually no buyer, no venue and no price. The realistic liquidity horizon for early stage UK equity is often put at seven to ten years, driven by exit timelines rather than by the tax rules. Pair a tokenised SEIS shareholding with a PISCES trading window placed at or just beyond the three year point, and that horizon compresses substantially, potentially down to three years, without touching the relief at all. Liquidity is enabled. It is not, and should not be presented as, guaranteed.

Recent weeks have given the theory some real infrastructure to point at. Veremark became the third company to complete a PISCES employee share sale in September, opening a 6 million pound window for a background check startup. A 150 year old Wadworth brewery ran what this publication described as a slow auction that rewrote expectations for what PISCES is actually for. Ctrl Alt has spent September adding board depth and jurisdictional licences across Guernsey, Dubai and Ireland. And the FCA and Bank of England's joint feedback statement on tokenisation in wholesale markets set out a route from sandbox to permanent rules after 123 industry responses, though its focus remains wholesale markets rather than early stage private company shares specifically.

None of that infrastructure was built with SEIS in mind. That is precisely the open question this publication keeps returning to. How does a tokenised ledger record of a SEIS shareholding reconcile in practice with Companies House remaining the legal source of truth, especially where a token changes hands multiple times inside a single PISCES window? What nominee or custody structure satisfies both HMRC, which cares about who is entitled to the tax relief and for how long, and the FCA, which cares about market conduct and investor protection on a trading venue? And critically, has HMRC actually been asked, formally, whether it has a view on tokenised representations of SEIS shares at all, or is the industry simply assuming a permissive answer because nothing has explicitly forbidden it?

This publication has not found evidence of published HMRC guidance addressing tokenised SEIS or EIS shareholdings specifically. That silence should not be read either way. It is not a prohibition, and it is not an endorsement. It is an absence, and absences in tax law involving reliefs this valuable tend to get expensive for someone the first time a real dispute arises.

The UK's SEIS company raise cap of 250,000 pounds was itself only set at that level after a 2023 increase from 150,000 pounds, and the scheme has shown Whitehall is willing to adjust it. Tokenisation is not a case for asking Treasury to change the substance of SEIS. The tax rules already permit what this piece describes. The case is for HMRC, alongside the FCA, to say clearly what a compliant tokenised nominee and custody structure looks like, so that platforms building live pilots are not left guessing at the boundary of a relief this consequential.

This article is general information about how SEIS, EIS and PISCES currently operate and is not tax or investment advice. Readers considering an early disposal of SEIS or EIS shares, tokenised or otherwise, should take advice from a qualified tax adviser before acting, and should note that HMRC has not published guidance specifically addressing tokenised representations of SEIS or EIS shareholdings.

Key Takeaways

• The SEIS three year holding period is a condition of tax relief, not a legal lock on the shares, and an investor can already sell earlier while forfeiting relief on those shares.

• Current SEIS limits are a 200,000 pound annual investor allowance, a 250,000 pound lifetime company raise cap, and 50 per cent income tax relief, with the cap last raised from 150,000 pounds in 2023.

• Tokenised SEIS shares can plausibly retain qualifying status where the underlying ordinary share is filed conventionally and Companies House remains the legal register.

• Pairing tokenisation with a PISCES trading window at or beyond the three year point could compress the realistic liquidity horizon for early stage UK equity from seven to ten years down to as little as three, without sacrificing relief.

• No published HMRC guidance currently addresses tokenised SEIS or EIS shareholdings directly, leaving the practical reconciliation with Companies House and FCA regulated venues as a genuinely open implementation question.

Disclaimer

This article is provided for general information only and does not constitute legal, financial, or investment advice. The regulatory treatment of tokenised assets and digital securities varies by jurisdiction and continues to evolve. Readers should seek independent professional advice before making any financial, legal, or regulatory decisions.