Enterprise Management Incentives (EMI) is the UK's most tax-efficient share option scheme for growing companies. If your company qualifies, you can grant employees options over shares, and when those options are exercised there is no income tax and no National Insurance on the gain, provided the exercise price is at least the value agreed with HMRC at the time of grant. CGT applies when the shares are eventually sold, and EMI shares can qualify for Business Asset Disposal Relief at 18% from 6 April 2026 on the two-year rule. For most funded UK tech and product companies, EMI is the default starting point for equity incentives.
This guide covers the whole scheme: what it is, who qualifies, the tax advantage, the grant-to-exit journey, key deadlines, and how EMI compares to the alternatives. Each subtopic links to its own deep guide for founders who need the full detail.
For a short, plain-English definition of EMI, see the what is EMI overview.
What is an EMI scheme?
Enterprise Management Incentives is a government-backed share option scheme that allows qualifying UK companies to grant options to employees. An option gives the employee the right, but not the obligation, to buy shares at a fixed price (the exercise price) at some point in the future. The scheme is "approved" in the sense that HMRC sanctions the tax treatment, not in the sense that HMRC approves each grant.
The core tax advantage is straightforward: where the exercise price is at least the agreed market value at the date of grant, no income tax or employee NIC arises on the gain between grant and exercise. The employee pays CGT only when they sell the shares, and if those shares qualify for Business Asset Disposal Relief, the rate is 18% on gains within the £1m lifetime limit, without the 5% personal-company test that applies to ordinary shareholders.
EMI is the default equity-incentive tool for funded UK tech and product startups precisely because the income-tax saving makes EMI options substantially more valuable to employees than equivalent cash compensation or unapproved options.
Who EMI is for and why founders use it
EMI was designed for small, high-growth companies that cannot compete with corporate salaries but can offer meaningful equity upside. It is the natural tool for a Series A or early-growth company that needs to retain and motivate key engineers, product managers, or commercial hires who are taking below-market cash in exchange for a stake in the outcome.
Founders use EMI because it aligns employee and shareholder interests without triggering an immediate tax cost for either party. Employees are not taxed on paper gains at grant or exercise (on qualifying options); they only pay tax when they crystallise cash by selling. For a funded startup backed by institutional investors, EMI is almost always the first equity-incentive structure evaluated and, where the company qualifies, almost always adopted. See our funded startups hub for wider context.
Does your company qualify for EMI?
EMI qualification is a company-level test and an employee-level test. Both must pass for each grant. The table below summarises the main thresholds. For the full test-by-test analysis, including excluded activities and the independence requirement, see the EMI qualifying company rules guide.
| Test | Threshold | Source |
|---|---|---|
| Company gross assets | £30m or less at the date of grant | gov.uk: EMI rules |
| Full-time-equivalent employees | Fewer than 250 FTE | gov.uk: EMI rules |
| Trade | Qualifying trade; no excluded activities (property, financial services, farming and others) | gov.uk: EMI rules |
| Per-employee option value | £250,000 unexercised, rolling three-year window | gov.uk: EMI rules |
| Company total option value | £3m unexercised across all EMI grants | gov.uk: EMI rules |
| Employee working-time commitment | At least 25 hours a week, or 75% of total working time if less | gov.uk: EMI working time |
The EMI limits
The £250,000 per-employee and £3m company caps apply to unexercised option value at any point in time, measured over a rolling three-year window per employee. These are value limits, not number-of-shares limits. Options granted to an employee above the £250,000 individual cap, or that push the company total above £3m, are not qualifying EMI options and lose the tax advantage. For the full detail, see the qualifying company rules guide.
The tax advantage explained
The core EMI tax advantage is the absence of income tax and NIC on the gain from grant price to exercise price, where the exercise price equals the agreed market value at grant. That separates EMI sharply from unapproved options, where the same gain is subject to income tax and employer and employee NIC. After exercise, the employee holds shares. When those shares are sold, CGT applies to any further gain. EMI shares are treated favourably under Business Asset Disposal Relief: the rate is 18% on gains within the £1m lifetime limit, and the two-year holding clock runs from the date the options were granted, not the date of exercise, and there is no 5% personal-company shareholding test to satisfy.
Illustrative tax journey (figures are not real; amounts are qualitative):
- Options granted at agreed market value X. No income tax or NIC at grant.
- Options exercised at price X (same as grant value). No income tax or NIC on exercise.
- Shares held for at least two years from the date of grant.
- Shares sold at value Y (Y > X). CGT applies to the gain (Y minus X) at the BADR rate of 18%, subject to the £1m lifetime limit.
Contrast with an unapproved option or a cash bonus of the same headline value, where income tax and NIC apply at the point of receipt or exercise, and CGT applies to any further gain from exercise to sale. The difference in net value to the employee is substantial. Use the EMI vs unapproved options calculator to model the comparison for your scheme.
How EMI options are valued
The agreed market value is central to the EMI tax advantage. Before granting options, the company should agree the valuation with HMRC Shares and Assets Valuation (SAV). SAV will agree both the unrestricted market value (UMV) and, where the shares carry restrictions, the actual market value (AMV), which is typically lower. Where the exercise price is set at the AMV, the spread between AMV and UMV at grant is treated as employment income, but the further gain from AMV to exit is within the CGT regime.
Note: the VAL231 form that was previously used to agree EMI valuations with HMRC is not linked here because the standalone URL currently returns a 404. Cite the EMI guidance and the ERS manual for the valuation process. For the full valuation walkthrough, see the EMI option valuation guide.
Setting up an EMI scheme, step by step
Setting up EMI involves five main stages. The critical deadline risk is at stage four: miss the 6 July notification deadline and the options may lose their qualifying status.
- Confirm company and employee qualification. Run through the gross-assets, FTE, trade, and working-time tests for each intended grantee. (gov.uk: EMI rules, gov.uk: EMI working time) See the qualifying rules guide.
- Agree the option valuation with HMRC SAV. Obtain agreement on AMV and UMV before granting. Do not use the VAL231 form URL without verifying it is live; cite the HMRC EMI guidance. (gov.uk: EMI valuation) See the valuation guide.
- Grant the options under a written EMI option agreement. The agreement must include the terms of the option, the exercise conditions (including vesting), and the agreed exercise price.
- Register the scheme and notify the grant by 6 July. The scheme must be registered on HMRC's Employment Related Securities service, and each grant notified, by 6 July after the tax year end. (gov.uk: ERS returns) See the ERS annual return walkthrough.
- Maintain: annual ERS return and disqualifying-event watch. File a nil or populated ERS return by 6 July every year. Monitor for disqualifying events that could strip the EMI status of options in flight. (gov.uk: ERS returns) See the disqualifying events guide.
To get a scheme set up with professional support, see the EMI scheme setup service.
Vesting, exercise and leavers
EMI options are granted subject to a vesting schedule that determines when the employee can exercise them. A four-year vesting schedule with a one-year cliff is typical in the funded startup world, though the scheme rules give flexibility. Vesting mechanics, good leaver and bad leaver provisions, and the interaction with accelerated vesting on a funding round or exit are all documented in the stock vesting explained guide.
On a leaver event, whether the options lapse, vest partially, or are exercisable depends on the option agreement's leaver provisions and on whether a disqualifying event has occurred. Leaving employment is itself a disqualifying event: the options retain their EMI tax treatment if exercised within 90 days of leaving, but lose it thereafter. See the disqualifying events guide for the full list and timing rules.
The option pool and planning ahead
Before a grant, most companies create an option pool: a block of shares (or unissued share capital) reserved for employee options. Getting the pool size and structure right before a funding round matters because investors will typically want the pool diluted pre-money. For the mechanics of building and sizing an option pool, see the option pool basics guide.
Section 431 elections and restricted securities
At funding rounds, founders and sometimes employees acquire shares subject to restrictions (such as drag-along rights or forfeiture conditions). Where that happens, a section 431 election must be made within 14 days of the acquisition, or the employee is taxed on the unrestricted value at the point the restriction lifts rather than at acquisition. This is a separate compliance step from EMI and catches many funded founders off guard. For the detail, see the section 431 elections guide.
When EMI is not available: the CSOP fallback
Where a company or an employee fails an EMI test (most commonly because gross assets have crossed £30m, headcount has reached 250 FTE, or the employee's options would breach the £250,000 cap), the Company Share Option Plan (CSOP) is the standard fallback. CSOP allows up to £60,000 of options per employee (gov.uk: CSOP) and carries no income tax on exercise where the exercise price equals the market value at grant. It lacks the BADR two-year-rule advantage and the working-time test but is broadly available to larger or excluded-activity companies. See the full comparison at the EMI vs CSOP guide.
EMI vs the alternatives at a glance
| Scheme | Limit | Tax on exercise | CGT on sale | Guide |
|---|---|---|---|---|
| EMI options | £250k/employee · £3m/company | None where priced at agreed market value at grant | 18% BADR (2-yr rule, no 5% test) or standard CGT rates | This page |
| CSOP | £60k/employee | None where exercise price = market value at grant | Standard CGT rates (18% / 24%) | EMI vs CSOP |
| Growth shares | No statutory cap | Income tax / NIC on value above hurdle at acquisition (under ERS rules) | Standard CGT rates on gains above hurdle | Growth shares guide |
| Unapproved options | No statutory cap | Income tax and NIC on full gain at exercise | Standard CGT rates on further gain | EMI vs unapproved calculator |
Sources: gov.uk: EMI rules, gov.uk: CSOP, HMRC ERS manual.
Getting an EMI scheme set up
EMI has real deadline risk: miss the 6 July notification window and the options granted in that tax year lose their qualifying status. Getting the valuation, the option agreements, and the HMRC registration done correctly before the deadline is the part most founders underestimate. For professional help with the full process, see the EMI scheme setup service or the broader share schemes service.