Employee Share Options for UK Startups: Understanding EMI Schemes and Tax Implications

Introduction to employee share options

Understanding how employee share options work has become increasingly important for UK startups and scale-ups looking to attract, motivate and retain key talent. As businesses grow, offering equity can be one of the most effective ways to align employees with long-term company success but only when the structure, tax treatment and compliance requirements are clearly understood.

Many founders and finance teams are aware that share incentives can deliver substantial benefits for both employers and employees. However, knowing the difference between share options, share awards, EMI schemes and unapproved options and how each one is taxed can be difficult to navigate without clear guidance. Getting this right is crucial, as the design and timing of a scheme can have a direct impact on employee engagement, company control, dilution, and potential income tax or National Insurance liabilities.

To support businesses exploring equity as part of their compensation strategy, we’ve created a comprehensive factsheet that explains the key concepts, advantages and considerations associated with employee share options. It covers the essential points around awarding shares, granting options, how Enterprise Management Incentives (EMIs) operate, and what differentiates EMI schemes from unapproved share option arrangements. This resource is designed to help employers understand the practical and tax implications before implementing a scheme without replacing professional advice.

Below, you’ll find an overview of the core topics included in the factsheet, from the pros and cons of shares versus options, to EMI eligibility, valuation requirements, HMRC administration and the tax treatment employees can expect at each stage. This introductory guide provides a strong foundation for anyone looking to make informed decisions about employee equity incentives.

What are employee share options?

Companies may offer shares to employees as part of their compensation to boost retention and engagement. These can be structured as either share options (where employees gain the right to buy shares at a fixed price in the future) or share awards (where shares are given outright).

If structured correctly, share incentives can deliver significant tax advantages. However, if not managed properly, employees may face unexpected income tax and NIC liabilities.

Shares vs share options - key differences

Pros and cons of awarding shares

Awarding shares upfront provides the employee with an immediate equity interest in the company. Where the company is still in its early stages and/or shares are awarded when their value is low, the potential income tax charge on acquisition may be minimal.

However, granting shares too early can lead to dilution of ownership and loss of control. Employees who become shareholders may gain voting rights, influencing company decisions. Additionally, if an employee leaves, and there is not a mechanism to recover their shares, this could present commercial challenges if they are no longer contributing to the company's growth.

Pros and cons of granting share options

By contrast, share options offer a more structured approach to employee ownership. Rather than awarding shares outright and upfront, options provide employees with the right to acquire shares at a future date, often contingent on meeting certain conditions such as tenure or performance milestones. This mechanism helps ensure that equity rewards are given to those who continue to contribute to the company's success.

However, while deferring ownership may help retain key talent, it can also lead to a higher income tax burden for the employee at the point of exercise/share acquisition, especially if the value of the shares has significantly appreciated in that time.

Why EMI schemes are the preferred choice for startups and scaleups

An EMI scheme is a legislated tax-advantaged share options scheme, designed specifically for smaller, high-growth companies, and can offer significant tax benefits while providing flexibility in structuring share options.

Unlike non tax advantaged employee option schemes, where any tax on acquisition of shares is based on the market value at exercise, EMI options allow employees to lock in their tax position at the time of grant. If the exercise price is set at or above market value at grant, no income tax is due when the options are exercised.

The EMI option structure also enables the company to exercise flexibility in their approach to incentivising employees. The scheme allows options to be tailored depending upon performance metrics, vesting periods, and company goals.

Tax advantages of EMI options

Another major advantage of EMI options is that any future increase in share value, after the employee has exercised and acquired their shares, is subject to Capital Gains Tax (CGT) rather than income tax. CGT is typically charged at a lower rate than income tax, with a maximum rate of 24% as opposed to income tax rates of up to 45%. This means employees can benefit from a more favourable tax treatment on their eventual gains.

EMI and Business Asset Disposal Relief (BADR)

Additionally, shares acquired under an EMI scheme can qualify for Business Asset Disposal Relief (BADR), further enhancing their tax efficiency.

Under normal rules, BADR requires an individual to hold at least 5% of a company's shares for a minimum of two years to benefit from the reduced 10% CGT rate (based on 2024/25 rules). However, EMI options are subject to relaxed BADR rules, allowing employees to qualify for the relief even if they hold less than 5% of the company. Furthermore, the two-year ownership period can start from the date of grant rather than the date of exercise, making it easier for employees to meet the qualifying conditions.

Important EMI rules and HMRC requirements

There are a number of rules surrounding the administration of EMI schemes, for example employees must work at least 25 hours per week in order to be eligible, and there are limits on the size of an eligible company, namely that they have no more than £30 million in assets and no more than 250 employees.

Furthermore, it is highly recommended that companies have their market value agreed with HMRC prior to the grant of share options, in order to prevent any future issue with HMRC once the shares are exercised. Additionally, companies must notify HMRC of any EMI option grants, and submit an annual return, by 6 July each year.

Understanding unapproved share schemes

Unapproved share schemes are often used when EMI is not available, whether due to company size, industry restrictions, the structure of the business, or because the individuals to receive options are not employees. While they can still serve as a valuable incentive tool, they come with less favourable tax treatment compared to EMI options.

The main drawback of unapproved share options is the tax burden on exercise. When an employee exercises an unapproved option, they will typically face an income tax charge on the difference between the market value at exercise and the price paid for the shares. For high-growth startups, this can pose a considerable challenge, as employees may need to find cash to cover the tax bill before realising any value from their shares.

Additionally, unlike EMI options, gains from shares acquired under an unapproved options scheme do not automatically qualify for the reduced CGT rates associated with BADR. This means that employees could face a much higher overall tax liability on any growth in share value.

However, despite these tax disadvantages, unapproved schemes can still be structured effectively to support company objectives. For example, companies can impose conditions on the exercise of options, such as requiring a liquidity event (like a sale or IPO) before employees can exercise and sell their shares. This helps ensure that employees do not face a tax charge without an opportunity to realise value.

Would you like more advice

Not sure which scheme is right for your business? Contact us to arrange a free consultation today to discuss the best approach for your company’s needs.