EMI Share Options Explained: A UK Tax Guide for 2026/27

Quick answer

EMI share options are tax-advantaged options for employees of smaller UK trading companies. There is no tax on grant. If options are granted at or above the agreed market value, there is no Income Tax or National Insurance on exercise. When you sell, the gain is subject to Capital Gains Tax, but EMI shares can qualify for Business Asset Disposal Relief at 18% for 2026/27, after the GBP 3,000 annual exempt amount.

What EMI share options actually are

An Enterprise Management Incentive (EMI) option is a legal right to buy a fixed number of shares in your employer at a price set today, exercisable at some point in the future. The attraction is simple: if the company grows, you buy shares at the old, lower price and capture the increase in value. EMI is the most generous of the UK's tax-advantaged share schemes, which is why startups and scale-ups use it so heavily to attract and keep talent without paying large cash salaries.

The scheme is statutory and deliberately targeted. It is designed for smaller, independent trading companies, and the tax breaks are conditional on the company, the employee and the options all meeting specific rules. Get those rules right and the combined Income Tax, NI and CGT outcome is far better than a cash bonus or unapproved options. Get them wrong and HMRC taxes the reward as ordinary employment income.

The three tax moments: grant, exercise, sale

It helps to think of an EMI option as having three distinct points in time, each with its own tax question.

1. Grant

When qualifying EMI options are granted, nothing happens for tax. You are simply given the right to buy shares later. There is no Income Tax and no National Insurance charge on grant. This is different from being handed free or discounted shares outright, which would be taxed immediately as earnings.

2. Exercise

Exercise is when you actually pay the exercise price and the shares become yours. The tax here depends on the price you were given at grant compared with the market value agreed with HMRC at that time.

• If the exercise price was at or above the agreed market value at grant, there is normally no Income Tax or NI on exercise.
• If the exercise price was below the agreed market value (a discount), Income Tax applies to that discount on exercise, and NI may apply too if the shares are readily convertible to cash.

This is why companies almost always agree a valuation with HMRC before granting EMI options and set the exercise price at that value.

3. Sale

When you sell the shares, you have a Capital Gains Tax event. The gain is broadly the sale proceeds minus what you paid to acquire the shares (the exercise price), and minus the annual exempt amount. For EMI shares meeting the conditions, Business Asset Disposal Relief can apply, taxing the gain at 18% rather than the standard 18% or 24%.

How the CGT works in 2026/27

Capital Gains Tax is where most of the value is finally taxed, so it pays to understand the numbers for the 2026/27 tax year.

The annual exempt amount of GBP 3,000 is deducted first. Anything above that is taxed. Without BADR, the rate depends on where the gain falls relative to your Income Tax bands: gains within the unused basic-rate band are taxed at 18%, and gains above it at 24%. With BADR, qualifying EMI gains are taxed at a flat 18%.

A crucial point for EMI: the normal 5% personal-company shareholding test for BADR is relaxed for EMI shares. That means even employees with a tiny percentage holding can still qualify, provided the EMI option was granted at least the required period before sale and the other conditions are met. Always confirm the current minimum holding period on gov.uk, as it is a statutory condition that has changed in the past.

A simplified worked example

Suppose you were granted EMI options at an agreed market value of GBP 1 per share over 10,000 shares, with the exercise price set at GBP 1. Years later the company is sold and your shares are worth GBP 8 each.

Because the option was granted at market value, there was no Income Tax on exercise. The whole reward is captured as a capital gain and taxed at the reduced 18% rate. The same gain taxed at the higher standard CGT rate of 24% would cost GBP 16,080 -- a difference of GBP 4,020 on this example alone. Run your own figures through the calculator before committing to a sale date.

The qualifying rules in plain English

EMI is only available if the company, the employee and the options all qualify. The detailed financial thresholds are reviewed periodically, so treat the points below as the mechanism and verify the current numbers on gov.uk.

Company conditions

• It must be an independent trading company (or the parent of a trading group), not controlled by another company.
• It must have gross assets below a statutory ceiling and fewer than 250 full-time-equivalent employees.
• It must carry on a qualifying trade. Several activities are excluded, including banking and finance, property development, farming, and legal and accountancy services.

Employee conditions

• You must be an employee of the company or a qualifying subsidiary.
• You must meet the working-time requirement: broadly at least 25 hours a week, or 75% of your total working time if that is less.
• You must not hold a material interest of more than 30% of the company.

Option and limit conditions

• Each employee can hold unexercised EMI options over shares worth up to GBP 250,000 at the date of grant.
• There is a separate company-wide limit on the total value of EMI options that can be outstanding.
• The options must be capable of exercise within 10 years and meet the notification requirements with HMRC.

Disqualifying events and leaving

EMI status is not permanent. Certain disqualifying events -- such as the company ceasing to meet the trading conditions, the employee failing the working-time test, or significant changes to the share capital -- can stop the favourable treatment from applying to options exercised afterwards.

Leaving the company is the one most employees encounter. If you leave, your scheme rules dictate whether you keep any vested options and for how long. There is also commonly a window (often 90 days) within which you must exercise to preserve the EMI tax treatment after a disqualifying event. Miss that window and any growth in value after the event can be taxed as employment income rather than as a capital gain. The timing of a resignation can therefore have a real tax cost.

EMI versus the alternatives

It is worth seeing why EMI is preferred over the main alternatives.

The gap is large. A reward delivered as salary or unapproved options can be taxed at marginal Income Tax rates of 40% or 45%, plus NI, whereas the same reward through EMI can end up taxed at 18%. For a higher earner, that can roughly halve the tax on the same economic benefit.

If you want to see the Income Tax and NI cost of taking value as salary instead, model it first.

What employees should actually do

If you have been offered EMI options, a short checklist will save you from the most common mistakes.

• Read the option agreement and find the exercise price and the HMRC-agreed market value at grant. This tells you whether exercise will be tax-free.
• Confirm with the company that the options were properly notified to HMRC and that the company met the conditions at grant.
• Understand the vesting schedule and any leaver provisions before you change jobs.
• Plan the sale around the GBP 3,000 annual exempt amount and, where possible, spread disposals across tax years.
• Keep every piece of valuation and grant paperwork. HMRC may ask for it years later when you finally sell.

Because the eventual gain can be large, it is worth modelling the Income Tax position of your wider income in the year of sale too, since that affects which CGT band any non-BADR gains fall into.

Common pitfalls

A few traps catch people repeatedly. Granting options below market value without realising it creates an Income Tax charge on exercise. Missing the HMRC notification deadline strips the EMI status. Failing the working-time requirement -- for example, dropping to part-time -- can be a disqualifying event. And selling without checking the minimum holding period for BADR can cost you the reduced 18% rate. None of these is obvious from the outside, which is why advice before exercising or selling is money well spent.

The bottom line

EMI remains the gold standard for rewarding employees of qualifying UK startups and scale-ups. The mechanism is clear: no tax on grant, normally no tax on exercise when granted at market value, and capital gains treatment on sale at a possible 18% Business Asset Disposal Relief rate after the GBP 3,000 annual exempt amount. The savings versus salary or unapproved options can be very large for higher earners.

The catch is that every benefit is conditional. The company, the employee, the options and the timing all have to line up, and several thresholds change over time. Treat the figures here as the framework, confirm the current statutory limits on gov.uk, and take professional advice before you exercise or sell. Done properly, EMI is one of the most efficient ways to share in the value you help create.