Guide
Understanding employee share schemes
An overview of the four HMRC tax-advantaged employee share schemes (EMI, CSOP, SIP, and SAYE), helping employers understand which scheme suits their business, how the tax advantages work, and what is involved in setting up and running a scheme.
Offering employees a stake in your business can be one of the most effective ways to attract talent, reduce staff turnover, and align your team's interests with the long-term success of the company. Employees who hold shares or share options have a direct financial reason to help the business grow.
HMRC operates four tax-advantaged share schemes, each designed for different types of company and workforce. When set up correctly, these schemes let employees acquire shares without paying Income Tax or National Insurance on the full value — and in some cases, with reduced Capital Gains Tax when they eventually sell.
This guide explains each scheme, helps you decide which one fits your business, and sets out what is involved in getting started.
The four tax-advantaged schemes at a glance
Each scheme has different rules on who can participate, how much can be offered, and when the tax advantages apply. The comparison below sets out the key differences across all four schemes.
All four schemes must be registered with HMRC before they can operate. EMI and CSOP are selective — you choose which employees receive options. SIP and SAYE must be open to all eligible employees on the same terms.
Choosing the right scheme for your business
The right scheme depends on your company's size, structure, and what you want to achieve. Consider the following decision points:
Small or medium company with a qualifying trade
EMI is typically the strongest choice. It offers the most generous tax treatment, the highest individual limits, and maximum flexibility over vesting conditions and exercise terms. From April 2026, the eligibility thresholds are expanding significantly — the gross assets limit rises to £120 million and the employee cap increases to 500 — making EMI accessible to a much wider range of businesses. However, EMI is only available to companies carrying on a qualifying trade, which excludes certain activities such as property development, banking, and legal services.
Any company wanting to reward selected individuals
CSOP works for companies that do not qualify for EMI or want to offer options above the EMI individual limit. The individual limit is £60,000 per employee, options must be exercised between 3 and 10 years after grant, and the scheme is self-certified (no prior HMRC approval needed). CSOP is available to any company whose shares meet the qualifying conditions, including those carrying on excluded EMI activities.
Larger company wanting broad-based ownership
SIP and SAYE are designed for companies that want every employee to participate. Both require the scheme to be open to all eligible employees on the same terms.
- SIP lets you give free shares (up to £3,600 per year), offer partnership shares bought from pre-tax salary, and provide matching shares. Shares must be held in a trust for a minimum period to retain the tax advantages. SIP suits companies that want to build an ownership culture over time.
- SAYE (also called Sharesave) is a savings-linked scheme. Employees save a fixed monthly amount and, at the end of the savings contract, can buy shares at a price set when they joined — typically at a discount of up to 20%. SAYE is particularly common in listed companies because it works well with publicly traded shares, but it is also available to private companies.
Can you use more than one scheme?
Yes. Many companies operate EMI or CSOP alongside a broader SIP or SAYE. For example, a growing company might use EMI for senior hires and a SIP for the wider workforce. The schemes are independent — participating in one does not affect eligibility for another.
How the tax advantages work
The tax treatment varies at three stages: when options are granted, when they are exercised (the employee acquires the shares), and when the shares are sold. Understanding these stages is essential for explaining the value of a scheme to your employees and for your own payroll reporting.
The key benefit across all four schemes is that employees do not pay Income Tax or National Insurance on the increase in share value between grant and exercise, provided the scheme rules are followed. When employees later sell the shares, they pay Capital Gains Tax — which is typically charged at a lower rate than Income Tax. For EMI shares, Business Asset Disposal Relief may reduce the CGT rate further.
Setting up a scheme
Every tax-advantaged scheme must be registered with HMRC through the Employment Related Securities (ERS) online service. The registration process is the same for all four scheme types.
Beyond HMRC registration, there are practical steps to consider:
- Share valuation: You will need an agreed market value for your shares. For EMI, you can apply to HMRC for an advance valuation (known as an AMV agreement) before granting options. For private companies using other schemes, an independent valuation is advisable.
- Scheme rules and option agreements: Each scheme needs formal documentation. For SIP and SAYE, you will typically need a scheme trust deed and rules drafted by a solicitor experienced in employee share schemes. For EMI and CSOP, you need individual option agreements.
- Trust requirements: SIP shares must be held in a UK-resident trust. You will need to appoint trustees and establish the trust before launching the scheme. SAYE shares may also be held through a nominee or trust arrangement.
- Articles of association: Check that your company's articles allow the issue of shares under the scheme and do not contain restrictions that conflict with HMRC requirements.
- Professional advice: Share schemes involve company law, employment law, and tax law. Most employers engage a specialist adviser for the initial setup, even if they manage the scheme day-to-day afterwards.
Ongoing compliance
Once a scheme is running, you have annual reporting obligations to HMRC. The most important is the ERS annual return, which must be filed even if no share transactions took place during the year.
Common compliance mistakes to avoid:
- Missing the registration deadline: A tax-advantaged scheme must be registered by 6 July following the tax year in which it was established. If you miss this deadline, the scheme loses its tax-advantaged status retrospectively.
- Forgetting nil returns: Even if no options were granted, exercised, or lapsed during the year, you must still file a nil return. The automatic penalty for a late return is £100, escalating to £300 after 3 months and £10 per day after 6 months.
- EMI notification delays: For EMI, you must notify HMRC of each option grant separately. This notification must be made within 92 days of the grant date.
- Breaching scheme conditions: If an employee's circumstances change (for example, they reduce their working hours below the minimum for EMI, or leave the company), the tax treatment of their options may be affected. Monitor qualifying conditions throughout the life of the options.
April 2026 EMI expansion
From 6 April 2026, the EMI eligibility thresholds are changing significantly. If your company previously fell outside the EMI limits, it is worth reassessing whether you now qualify.
If your company will newly qualify for EMI from April 2026, consider obtaining a share valuation and preparing option agreements in advance so you are ready to grant options shortly after the new rules take effect.