- EIS tax relief makes it easier for founders to raise investment by offering investors income tax, capital gains and loss relief.
- Founders must understand how EIS tax relief works to avoid mistakes that can invalidate investor claims.
- Advance assurance and correct timing are critical to protecting EIS tax relief throughout the three year holding period.
You might be asking yourself, “What is EIS tax relief?” And it’s essential if you plan to raise equity investment in the UK. The Enterprise Investment Scheme is designed to encourage investors to back higher risk, early stage companies by offering generous tax incentives, but those incentives only apply if your company meets strict HMRC rules.
For founders, EIS tax relief is not just an investor benefit. It directly affects how attractive your fundraise is, how quickly you can close a round, and whether investors remain protected after completion. That’s why many founders choose to apply for EIS advance assurance with confidence at Sleek before raising, so eligibility is checked upfront.
Mistakes around company age, qualifying activity, share issues, or investor connections can invalidate EIS income tax relief and capital gains relief, sometimes years after the investment.
This guide explains EIS tax relief from a founder’s perspective. It covers how the scheme works, what reliefs investors can claim, the key rules HMRC expects you to follow, and why getting the structure right early is critical to avoiding delays, rejected claims, or tax relief clawbacks.
How does EIS tax relief actually work for founders?
EIS tax relief works by reducing the risk investors take when backing early stage companies. In exchange for buying new ordinary shares, investors receive tax relief, while founders raise capital without adjusting valuation mechanics to compensate for risk.
For founders, the key point is that EIS is conditional. HMRC expects your company to qualify at the point shares are issued and to remain compliant throughout the minimum holding period. If eligibility breaks at any stage, investor tax relief can be withdrawn.
This is why founders must understand the timing rules set out in the EIS investment time limit before issuing shares or accepting funds.
Before you spend time pitching investors, check that your company’s qualifying trade status is clear and documented. HMRC looks closely at what your business actually does at the point shares are issued, not what you plan to do later. Ambiguous activities, mixed trading, or future pivots are a common reason EIS relief is challenged after the round has closed.
What EIS tax reliefs can investors claim?
EIS tax relief is made up of several separate reliefs that together improve investor outcomes.
Investors may be eligible for:
- Income tax relief
- Capital Gains Tax exemption on disposal
- Capital Gains Tax deferral on other gains
- Loss relief if the investment fails
Each relief is linked to specific compliance rules. Losing one often means losing others, which is why founders must treat EIS as a long term compliance commitment, not a one off filing exercise.
How does EIS income tax relief influence investor decisions?
EIS income tax relief allows investors to reduce their income tax bill by 30 percent of the amount invested.
From a fundraising perspective, this matters because it changes investor behaviour:
- Investors are more willing to back earlier stage companies
- Cheque sizes are often larger
- Funding rounds close faster
To qualify, shares must be newly issued ordinary shares with no preferential rights. Many founders accidentally invalidate relief by misunderstanding how shares and ownership work, which is why it is worth reviewing the basics of what is equity before finalising your cap table.
Why is the three year holding period critical?
The three year holding period is one of the most common reasons EIS relief is clawed back.
Investors must hold their EIS shares for at least three years from the later of:
- The date the shares are issued
- The date the company starts a qualifying trade
If shares are sold early, or if the company stops meeting EIS conditions during this period, HMRC can withdraw relief already claimed.
Founders should be especially careful when changing business activities, acquiring other companies, or restructuring. Moving into non qualifying activity can trigger issues similar to those explained in trading vs non trading for corporation tax.
How does Capital Gains Tax relief affect fundraising conversations?
EIS offers two separate Capital Gains Tax advantages that are particularly attractive to experienced investors.
First, if EIS shares are held for at least three years and income tax relief remains valid, any gain on disposal is free from Capital Gains Tax.
Second, investors can defer Capital Gains Tax on gains from other assets by reinvesting them into EIS shares. This is known as deferral relief, and it often appeals to investors who have recently exited another business or sold assets. The mechanics are covered in EIS CGT deferral, but the founder takeaway is simple. EIS allows investors to reinvest gains into your company instead of paying tax immediately.
What happens if the company fails and investors make a loss?
Loss relief is a major reason investors are willing to accept early stage risk.
If EIS shares are sold at a loss, or become worthless, investors can offset the loss, after income tax relief, against either income tax or capital gains tax. This significantly reduces the effective downside.
For founders, this does not reduce your responsibility. Loss relief only applies if EIS conditions were met up to the point of failure. If relief is denied due to a compliance breach, investors lose this protection entirely.
Who can and cannot claim EIS tax relief?
Not every investor qualifies for EIS tax relief, and founders need to be aware of this before accepting funds.
In broad terms, investors cannot usually claim relief if they:
- Control more than 30 percent of the company
- Are employees of the company
- Receive disallowed benefits or preferential rights
The rules differ from SEIS and are often misunderstood. If you are unsure which scheme applies to your raise, the comparison in difference between SEIS and EIS helps clarify which route fits your stage and investor profile.
Why do founders apply for advance assurance before raising?
Advance assurance allows founders to ask HMRC, in advance, whether their company is likely to qualify for EIS.
While it is not a guarantee, it gives investors confidence that the structure has been reviewed and reduces friction during the raise. Many failed EIS claims stem from issues that could have been identified early, including those outlined in SEIS and EIS 10 common pitfalls.
For founders raising serious capital, advance assurance is often the difference between a smooth close and prolonged delays.
How Sleek helps founders protect EIS tax relief
EIS tax relief is a powerful fundraising tool, but only when it is implemented correctly from day one. Structuring shares, timing the raise, confirming eligibility, and maintaining compliance all matter.
Sleek supports founders through the EIS process end to end, from eligibility checks and advance assurance through to ongoing compliance, so investors can claim relief with confidence and founders can focus on growing the business.
Not sure which services are right for your business?
Fill in the contact form and we will get back to you soonest.
Disclaimer: The preceding information is not legal advice. This content is aimed to provide general guidance. For more formal or legal advice, contact Sleek directly.
450,000
businesses worldwide.
from 4,100+ reviews.
satisfaction rate from
16,000 surveyed clients.
FAQs on what is EIS tax relief
How does EIS tax relief work?
EIS tax relief works by offering investors income tax relief, capital gains tax benefits, and loss relief when they buy new shares in qualifying UK companies. For founders, this reduces perceived risk and makes early stage fundraising easier. The relief only applies if the company stays compliant throughout the qualifying period, including meeting timing rules set out in the EIS investment time limit.
Who qualifies for EIS tax relief?
To qualify, an investor must be an individual UK taxpayer who is not “connected” to the company. In most cases, investors cannot hold more than 30 percent of the company or be employed by it. Directors may qualify in limited circumstances. The rules differ from SEIS, which is why founders often review the difference between SEIS and EIS before raising.
What companies are eligible for EIS investment?
EIS eligible companies must be unquoted UK trading companies carrying on a qualifying trade. They must usually be under seven years old, have fewer than 250 employees, and meet gross asset limits. Many founders misjudge eligibility because of mixed activities, an issue also seen in trading vs non trading corporation tax rules.
What are the risks of EIS investments?
EIS investments are high risk and illiquid. Companies can fail, shares may be hard to sell, and tax relief can be clawed back if conditions are breached. For founders, the biggest risk is structural. Errors around shares, timing, or investor eligibility can invalidate relief, as highlighted in common SEIS and EIS pitfalls.
Can investors claim both EIS and CGT relief?
Yes. Investors can claim income tax relief on the amount invested and also benefit from capital gains tax relief. This includes CGT exemption on disposal and CGT deferral on gains from other assets. The deferral rules are strict, and founders often review how EIS CGT deferral works to understand investor expectations.
How do investors claim EIS tax relief on their tax return?
Investors claim EIS tax relief using an EIS3 or EIS5 certificate issued after the company submits its compliance statement to HMRC. Claims are made through Self Assessment or by adjusting a PAYE tax code. Delays often occur if certificates are issued late, which is why founders should plan compliance early.
How do founders set up EIS for a startup?
Founders must confirm company eligibility, structure ordinary shares correctly, and apply for advance assurance before issuing shares. Timing is critical, as shares issued too early or too late can invalidate relief. Many startups follow a structured process similar to that outlined in advance assurance for venture capital schemes to reduce HMRC risk.
