Things To Know About SEIS CGT Relief (Money Moves)

Alan Bermingham

10 Years of Expertise in Fintech Innovation

4 min read

All you need to know

SEIS (Seed Enterprise Investment Scheme) offers some of the most generous tax breaks available to UK investors. SEIS is one of several UK government-backed venture capital schemes that provide tax incentives to private investors. It’s designed to encourage investment in early-stage, higher-risk companies.

The scheme provides substantial tax relief to offset the risks associated with backing new businesses. SEIS offers investors a range of tax benefits, including income tax relief and capital gains tax exemption. These SEIS tax benefits make the scheme highly attractive for private investors. SEIS is available to any UK taxpayer who invests in qualifying startups.

Our team at Pie tax handles hundreds of calculations each year, helping investors maximise savings through SEIS investing strategies.Investors can also benefit from multiple venture capital schemes, such as SEIS and EIS, within the same tax year. Or if you’re just here to get to grips with it all, let’s break it down!

How SEIS capital gains tax relief works

SEIS Capital Gains Tax relief comes in two forms. First, when you sell SEIS shares after holding them for at least three years, any profit is completely free from CGT. This is known as a capital gains tax exemption and disposal relief, as you do not have to pay capital gains tax on the gain arising from the disposal of qualifying SEIS shares.

Second, there’s Reinvestment Relief, also referred to as capital gains reinvestment relief. This allows you to exempt up to 50% of a gain from another asset from CGT if you reinvest the proceeds into SEIS shares. The relief reduces the chargeable gain on which you would otherwise pay capital gains tax (CGT).

For example, if you make a £20,000 gain selling shares and reinvest that money into SEIS shares, you could exempt half the amount £10,000 from Capital Gains Tax. If your reinvestment is less than the gain, the relief applies to half the amount you reinvest.

If you do not meet the three-year holding period, any gain arising from the disposal may be subject to capital gains tax. Capital gains disposal relief and reinvestment relief are key benefits that can significantly reduce your CGT liabilities.

This is on top of the generous SEIS income tax relief available on your initial investment. On a £10,000 investment, you could get £5,000 back through income tax relief. If all SEIS conditions are met, your investment returns can be tax free.

Qualifying conditions for SEIS income tax relief you need to know

Not all investments qualify for SEIS relief. The company must be UK-based, less than two years old, have fewer than 25 employees, and be engaged in a qualifying business activity to be eligible for SEIS.

The company’s gross assets must be below £200,000 before your investment, and only qualifying assets are considered when calculating this threshold. They can only raise a maximum of £150,000 under SEIS in total.

SEIS relief is only available for investments in a SEIS qualifying company.

As an investor, you can’t be an employee of the company, though directors are allowed. Business partners and associates may not qualify if they are connected to the company by employment or financial interest. You can’t have a ‘substantial interest’ in the business (over 30% stake), which means having a significant claim on the company's assets.

The amount of risk capital you invest is relevant for calculating potential loss relief.

You must hold the shares for at least three years to keep the tax relief. Sell earlier, and HMRC will claw back the benefits.

Time limits and how to claim

Timing matters with SEIS. You can claim SEIS tax relief for investments made in the previous tax year or the same year as your gain. To claim reinvestment relief, the SEIS investment must happen in the same tax year as your original gain, or the following tax year.

Obtaining advance assurance from HMRC can confirm a company’s eligibility before you invest. You’ll need an SEIS3 certificate from the company before claiming the relief. The SEIS3 includes a unique investment reference number issued by HMRC, which you will need for your claim. This usually arrives after the company has traded for at least four months.

You must claim SEIS and claim tax relief through your Self Assessment tax return. You can claim relief up to five years after the 31 January following the relevant tax year. Remember, you must have claimed income tax relief before you can benefit from certain CGT reliefs. SEIS funds, which are pooled investment vehicles, can simplify the investment process and claim procedures for multiple investors.

I once missed the deadline for claiming SEIS relief by just two weeks, costing a client over £2,000 in unnecessary tax. It taught me the importance of tracking these dates meticulously.

Common pitfalls to avoid

SEIS relief can be withdrawn if the company stops meeting the qualifying conditions within three years. This is often outside your control, so it’s a genuine risk. Failing to meet qualifying conditions can also increase your tax liability.

Getting the timing wrong between your original gain and SEIS investment is another common mistake. The rules are strict, so keep careful records.

Remember that while SEIS offers generous tax relief, the underlying investments are in very early-stage companies. Many will fail, so don’t invest solely for tax reasons. If your SEIS investment results in a loss, you may be able to claim loss relief against your income tax bill.

The amount of loss relief you can claim depends on the at risk investment after accounting for any income tax relief already received. You can claim loss relief through your tax return if the company fails.

SEIS shares may also qualify for inheritance tax relief if held for at least two years, potentially exempting them from inheritance tax under Business Property Relief.

Failing to obtain and keep the SEIS3 certificate is a frequent oversight. Without this document, you cannot substantiate your claim to HMRC.

SEIS vs EIS: What's the difference in tax incentives?

SEIS and EIS are just two of several other venture capital schemes available to UK investors. SEIS is designed for very early-stage companies, while EIS (Enterprise Investment Scheme) suits slightly more established businesses. The Enterprise Investment Scheme (SEIS) is specifically designed to support early-stage companies through targeted tax incentives.

Both SEIS and EIS offer a range of tax reliefs, including SEIS income tax relief, capital gains tax relief, and inheritance tax relief, which can be claimed through your tax filings. SEIS offers 50% income tax relief compared to 30% with EIS, reflecting the higher risk of seed-stage investments.

The investment limits differ too: you can invest up to £100,000 annually in SEIS companies, but up to £1 million in EIS companies.

Companies can raise a maximum of £150,000 under SEIS, while EIS allows up to £5 million annually (with a £12 million lifetime limit).

Final Thoughts

SEIS CGT relief offers a powerful way to reduce your tax bill while supporting innovative UK startups. When used wisely, it can significantly boost your investment returns.

However, always remember the underlying investments are high-risk. The tax relief is generous precisely because many of these companies won't succeed.

Balance the tax advantages against the investment risks. Consider seeking professional advice before making significant SEIS investments.

Pie tax: Simplifying SEIS CGT Relief Tax

Getting your SEIS tax calculations right can be tricky, but the UK's first personal tax app makes it straightforward.

Pie tax helps you track all your SEIS investments in one place, automatically calculating your available tax relief across income tax and CGT.

Our app alerts you when you're approaching key dates for claiming relief. It helps you understand how much you can invest while staying within annual limits.

We provide clear, jargon-free explanations of how SEIS works alongside your other income sources and investments, giving you a complete financial picture.

If you're curious about how we could help with your investment tax planning, why not explore the Pie tax app?