SEIS and EIS loss relief: how it cushions a failed investment.

Loss relief is the part of the SEIS and EIS deal that nobody thinks about until a portfolio company emails to say the board has appointed administrators. Then it becomes the most interesting line in the tax code. In plain terms: when an SEIS- or EIS-qualifying investment fails, you can set the money you actually lost against your tax bill - and because the upfront relief already covered part of the cheque, the state ends up carrying most of the loss with you.

Angel investing is a power-law game: most early-stage companies return nothing, and the rare winner pays for the rest. The reliefs wrapped around SEIS and EIS exist precisely because Westminster wants people to keep funding things that mostly fail. Loss relief is the quiet half of that bargain - the bit that decides how much a failure actually costs you.

What is SEIS and EIS loss relief?

It's a tax relief on the money you lose when qualifying shares are disposed of at a loss - or become worthless. It sits on top of the income tax relief you got when you invested, and it's a separate claim made later.

Keep the two apart in your head. The income tax relief is upfront: 50% of the investment under SEIS, 30% under EIS, claimed for the tax year you invest (with a carry-back option to the previous year). That happens whether the company thrives or dies. Loss relief is what's left to recover if the company dies - and it only applies to the part of your cheque that was genuinely at risk after that first relief.

You don't get relief on money the Treasury already gave back. You get it on what was truly at stake.

How is the allowable loss calculated?

Take what you invested, subtract any income tax relief you already received, and the remainder is your allowable loss. HMRC's own wording is blunt: if you sell EIS shares at a loss, you can set "the loss amount, less any Income Tax relief already given" against your income. The same logic runs through SEIS.

A worked example makes it concrete. Say an angel puts £20,000 into an EIS-qualifying company.

• Upfront EIS income tax relief at 30%: £6,000 back at the time of investment.
• Net cost of the shares: £14,000.
• The company fails; shares worth nil. The allowable loss is the £14,000 at risk - not the full £20,000.
• Loss relief against income at, say, a 45% marginal rate: a further £6,300 recovered (£14,000 × 45%).

Add it up. Of the original £20,000, the upfront relief returned £6,000 and the loss relief returned £6,300 - roughly £12,300 recovered, leaving about £7,700 of real cost on a total wipeout. The exact figure turns on your marginal rate, which is why two angels who back the same dud can walk away having lost different amounts.

SEIS bites harder still, because the upfront relief is 50%. On a £20,000 SEIS investment, £10,000 comes back upfront, the net cost is £10,000, and loss relief applies to that £10,000. The principle is identical; the cushion is simply thicker. None of this is a reason to chase failure - it's the floor under a risk you were taking anyway.

Against income or against gains?

Here's where loss relief earns its reputation. The allowable loss doesn't have to wait around to offset some future capital gain. You can set it against your income for the tax year of the loss, or carry it back to the year before - which can reduce the tax due on that year's earnings and turn into cash relatively quickly. Alternatively, you can treat it as a capital loss and net it against gains.

Setting it against income is often the more useful route for an active angel, because it works against earnings taxed at a higher marginal rate rather than gains taxed at a lower CGT rate. But "often" is not "always". The right answer depends entirely on your own tax position in the relevant years - what income you have, what gains you have, and when. This is exactly the kind of choice to put in front of a qualified adviser rather than guess at.

What if the company hasn't formally folded?

Loss relief is usually triggered by a disposal - you sell the shares for less than they cost. But early-stage failure is rarely so tidy. Often the company limps on, technically alive, with shares worth essentially nothing.

For that, HMRC allows a negligible value claim: if shares have become of negligible value, you can claim to be treated as though you'd sold and immediately rebought them, which crystallises the loss without an actual sale. It's the mechanism that lets you claim relief on a zombie holding rather than waiting years for a formal dissolution. The conditions are specific, so this is one to check against current HMRC guidance or with an adviser before you file.

How do you actually claim it?

Three things sit behind every loss-relief claim, and the first two start long before any company fails.

• The certificate. The company issues an SEIS3 or EIS3 certificate after the shares are issued (which itself follows HMRC advance assurance and the company meeting the scheme's conditions). That certificate is what let you claim the upfront income tax relief - and the relief figure on it is what you'll subtract to size the allowable loss.
• Your own records. What you invested, what relief you claimed and in which year. Without it, you can't evidence the net cost.
• The claim itself. Loss relief is claimed through your Self Assessment return, or in some cases by writing to HMRC, specifying the year you want the loss set against. The detail of how it's reported is governed by HMRC's published guidance on tax relief for investors in venture capital schemes.

One boundary worth naming: this only works on shares that genuinely qualified. If the company breaches the scheme rules before your minimum holding period is up - three years for both SEIS and EIS - reliefs can be withdrawn, and a clawback of the upfront relief is a very different conversation from a clean loss-relief claim. Qualification isn't a formality; it's the whole game.

A note on VCTs

It's worth flagging what loss relief is not available on, because the assumption catches people out. Venture Capital Trusts - the listed cousins of SEIS and EIS - offer 20% income tax relief, tax-free dividends and no CGT on gains, but loss relief is not available on VCT shares. The structures rhyme; the downside protection does not. If your early-stage exposure is mostly through a VCT, the failure cushion described here simply isn't part of the deal.

The broader point: income tax relief lowers the entry price, and loss relief caps the exit damage. Read together, they're what makes a portfolio of mostly-failing early-stage bets a rational thing to hold - and the case for getting the paperwork and the advice right before, not after, a company goes under.

This article is general information for UK angel investors and is editorial journalism, not financial or tax advice. Figures reflect HMRC guidance current at the time of writing; rules and rates change. Check the current position on gov.uk and seek advice from an FCA-regulated or qualified tax adviser before making any investment decision.

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