Detailed information about each relief:
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Income Tax Relief
Subject to the annual maximum, income tax relief is potentially available at a maximum rate of 30% on EIS investments. Investing in EIS qualifying shares entitles the investor to a 30% reduction against their income tax bill. So a £100,000 investment entitles the investor to a £30,000 saving on their income tax bill.
- EIS reliefs are claimed on an investment-by-investment basis with the relevant dates being the date that the shares in the EIS company are actually issued, as opposed to the date of subscription to the Fund;
- The value of relief is 30% of the amount subscribed for shares in EIS companies no matter the effective rate of tax paid. But investors do need to have a sufficient income tax liability to cover the relief – it cannot create a negative tax liability;
- 30% income tax relief is available on EIS investments of up to £1 million in any tax year with further income tax relief being available on investments of up to an additional £1 million in any tax year in respect of ‘knowledge-intensive companies’. Click through to Section D to learn about KICS.
- Subject to the annual maximum, it may be possible for part or all of this tax relief to be carried back to the previous tax year;
- EIS shares must be held for a minimum period, of at least three years. If sold or otherwise disposed of during this period, some or all of the income tax claimed will be withdrawn and the shares may then be subject to capital gains tax. The same applies if a company ceases to qualify within three years. If an EIS company goes into administration within three years, income tax claimed should not normally need to be repaid (to the extent that there are no proceeds).
To understand how to claim income tax relief, please click through to Section C.
If you would like to read HMRC’s guide to claiming income tax relief for EIS qualifying investments, please click here.
2. Capital Gains Tax (CGT) free growth
As a UK taxpayer, when an investor sells shares at a profit, capital gains tax is usually payable at their marginal rate after deduction of the capital gains tax ‘annual exemption’. Depending on their personal circumstances this can be either 18% or 24%. Shares that qualify for EIS relief (and where EIS income tax relief has been claimed and not withdrawn) do not attract CGT, therefore on a profitable exit, no CGT needs to be paid from the proceeds received. This is sometimes referred to as Disposal Relief. For very successful companies that grow to be worth many multiples of the amount invested, this can be a significant benefit.
To qualify for this relief, shares have to have been held for a minimum of 3 years prior to sale, and must have met the qualifying conditions during this time. As mentioned above, Income Tax relief must also have been claimed in respect of the investment.
If you would like to read HMRC’s guide to CGT free growth (called disposal relief here) for EIS qualifying investments, please click here.
3. Relief for losses
If a company fails or is exited, an investor’s shares are sold at a loss and they can offset the loss against their tax bill. For there to be a loss, the company must have been sold for less than the “effective cost”. This is the amount invested in that company less the income tax the investor claimed in respect of it. For example, if someone invested £10,000 in a company and claimed income tax relief of £3,000, a loss will arise if proceeds from the sale of the company are less than £7,000 (their effective cost).
The amount of loss one can claim will be the difference between their effective cost, and the proceeds they receive. Alternatively, a company may fall to £nil value, which can entitle a ‘negligible value’ loss claim to be made.
Investors can choose whether to claim the effective loss against capital gains, or income tax. It is often beneficial to claim against income tax, and they can do so in respect of the year the loss has arisen, or the previous year.
An additional-rate taxpayer that offsets the loss on a company that falls in value to £0 could benefit from an extra 31.5% tax relief. In total, the initial 30% income tax relief plus the additional loss relief could effectively reduce a net loss per £1 invested to 38.5p.
Alternatively, investors can claim the loss against any capital gains tax bill for the current year, or future years on a roll forwards basis.
To understand when loss relief can be claimed, and how to make a claim, please click through to Section F.
HS286 Negligible value claims and Income Tax losses on disposals of shares you have subscribed for in qualifying trading companies (2025) – GOV.UK
4. Inheritance Tax Relief
As announced in the 2024 Budget and as updated on 23 December 2025, shares in EIS qualifying companies also qualify for Business Property Relief, sometimes called Business Relief. From April 2026, it is proposed that individuals will have a £2.5 million Business Relief allowance, enabling them to leave qualifying assets (including unlisted EIS shares) worth up to £2.5m completely free from IHT when they die. To qualify for this relief, shares must have been held for at least 2 years when the investor passes away (assuming the shares aren’t ‘replacement business property’, in which case the shares should be free from IHT from the date of investment).
If shares (or other qualifying assets) are worth more than £2.5 million are held at death, the excess value benefits from 50% relief from inheritance tax. As inheritance tax is typically charged at 40% of the value of the estate in excess of the nil rate bands, this can save the estate 40% (20% for assets above £1 million).
It is also proposed that shares listed on the Alternative Investment Market (AIM) and other junior markets which are not designated as ‘recognised stock exchanges’ such as Aquis, will in all circumstances only obtain relief at 50% rather than the current 100%.
Business Relief for Inheritance Tax: Overview – GOV.UK
Inheritance tax reliefs threshold to rise to £2.5m for farmers and businesses – GOV.UK
5. Capital Gains Tax (CGT) deferral relief
If an investor realises a capital gain on the disposal of other assets they own, CGT will typically be payable during the following tax year. However, if capital equivalent to the gain is invested into EIS shares and a relevant claim is made, that gain can be deferred over the life of the EIS investment.
To qualify for deferral relief, it is the value of the gain that needs to be reinvested. This will be a lower amount than the proceeds received on the disposal. For example, if another asset was sold for £100,000 and cost £60,000, the value of the gain is £40,000 – investing £40,000 into EIS qualifying shares in the relevant window could defer the CGT payable on this gain.
To defer the tax due on a disposal, the investment into EIS-qualifying shares needs to be within three years of the disposal giving rise to the capital gain. Alternatively, an EIS investment can be made up to 12 months prior to the disposal giving rise to the capital gain.
The gain will be deferred until the earliest of the following:
- The EIS shares are sold
- The company stops being EIS-qualifying within three years of investment
- The investor stops being a UK resident within three years of investment
When the deferred gain comes back into charge, capital gains tax will be payable on it at the relevant rate at that time. A gain can be deferred again if it’s reinvested into a new EIS-qualifying investment.
If the investor dies before the gain returns to charge, it will be eliminated.
Unlike the limits for claiming EIS income tax relief, there’s no maximum value limiting the amount of gains that can be deferred in this way.
To understand how to claim CGT Deferral Relief, please click through to Section C.
If you would like to read HMRC’s guide to deferring gains released elsewhere through investment in EIS qualifying shares, please click here (you’ll need to scroll down as the first half covers EIS disposal relief).
The amount and timing of these reliefs will depend on the individual circumstances of each investor and may be subject to change in the future. Investors are strongly recommended to seek independent professional advice on the tax consequences of acquiring, holding and disposing of shares in EIS companies.