What Happens to Your Share Options When You Leave the UK?
You are a UK agency founder with shares in your own company. You hold EMI options or unapproved share options that are not yet exercised. You are planning a move to Dubai, or maybe back to Australia, or across Europe. You have checked property CGT. You have checked the statutory residence test. You think you are in the clear.
You are probably wrong about one thing. Unexercised share options can trigger an immediate Capital Gains Tax charge on the day you leave. HMRC calls it an exit charge. Most accountants overlook it because they focus on property and listed shares. Your agency's unexercised options are a different animal entirely.
This article covers the UK capital gains tax leaving UK exit charge options specifically for agency founders holding shares in their own trading company. We will use real numbers and real scenarios. No theory.
The Exit Charge: What It Actually Is
When you cease to be UK tax resident, HMRC treats certain assets as if you disposed of them at market value on the day you left. You do not actually sell anything. You do not receive any cash. But HMRC calculates a gain as if you had sold, and they expect you to pay the tax within the normal self-assessment timeline.
This applies to:
- Shares and securities (including unlisted shares in your agency)
- Assets used in a UK trade (if you continue to trade through a UK company, the shares are caught, not the trade itself)
- Certain intangible assets
The key point for agency founders: unexercised share options are caught if they are treated as "assets" for CGT purposes. EMI options and most unapproved options fall into this category.
When Does the Charge Apply?
The exit charge under section 86 TCGA 1992 applies if:
- You hold assets that would give rise to a chargeable gain if disposed of
- You cease to be UK resident
- You have been UK resident for at least 7 of the previous 10 tax years
If you have been resident for less than 7 of the last 10 years, the exit charge does not apply. But if you are a typical agency founder who has lived in the UK for a decade or more, you are caught.
How Share Options Trigger the Exit Charge
Here is where it gets specific. You hold EMI options over shares in your agency. The options are not yet exercised. You have not paid for the shares. You have no legal title to the shares themselves. But HMRC treats the option itself as an asset.
When you leave the UK, HMRC deems a disposal of that option at its market value. The gain is the market value of the option minus any amount you paid to acquire it (usually zero for EMI options).
Real example: You hold EMI options over 10,000 shares in your agency. The option exercise price is £1 per share. The current market value of the shares is £10 each. Your option is "in the money" by £9 per share. The market value of the option itself is roughly £90,000 (10,000 shares x £9).
On the day you leave the UK, HMRC treats you as having disposed of that option for £90,000. You paid nothing for it. The chargeable gain is £90,000. At 24% CGT (the higher rate for non-residential disposals), you owe £21,600 in tax on a gain you have not realised in cash.
That is the exit charge in action. No cash. No sale. Just a tax bill.
EMI Options and the Exit Charge: A Special Case
EMI options have a specific advantage: if you exercise the option within 90 days of leaving the UK, the exit charge does not apply to the option itself. Instead, you are taxed on the shares you acquire at the point of exercise. That gives you a window to manage the timing.
But if you do not exercise within 90 days, the option is caught by the exit charge. And once you have triggered the charge, you cannot undo it by exercising later.
For unapproved options, there is no 90-day window. The exit charge applies on the day you leave, full stop.
What About Shares You Already Hold?
If you already hold shares in your agency (not options), the exit charge applies to those shares too. The deemed disposal is at market value on the day you leave. You owe CGT on the gain above your base cost.
Example: You own 100% of the shares in your agency. You subscribed for them at £1 each, 10,000 shares. The company is now worth £1.5 million. Your gain is £1,499,990. At 24%, the tax bill is £359,997.60. You have not sold anything. You have not received a penny. But HMRC expects payment.
This is why the exit charge is dangerous. It creates a tax liability without a cash event. Agency founders who move to Dubai expecting zero tax often discover this the hard way.
Can You Defer the Exit Charge?
Yes, but only in limited circumstances. You can make an election under section 80 TCGA 1992 to defer the charge if you dispose of the asset within 6 years of leaving. But the deferred gain crystallises when you eventually sell, and it is taxed at UK rates regardless of your residence at that time.
There is also a specific deferral for EMI options if you exercise within 90 days. That is your best option if you hold EMI options and plan to leave.
For unapproved options, deferral is not available in practice. You either pay the exit charge or you do not leave.
What If You Return to the UK Within 5 Years?
If you return to the UK within 5 tax years of leaving, the exit charge is reversed. The deemed disposal is treated as if it never happened. You are back to your original position. This is called the "temporary non-residence" rule.
But if you stay away for 6 or more tax years, the exit charge stands. The gain is final.
For agency founders planning a permanent move to Dubai, the 5-year rule matters. If you return within 5 years, you get your options back as if nothing happened. If you stay longer, the exit charge is locked in.
How to Structure Around the Exit Charge
If you are planning to leave the UK and hold unexercised options, you have several options:
1. Exercise Before You Leave
Exercise your EMI options before you become non-resident. You acquire the shares, pay the exercise price, and hold the shares. The exit charge then applies to the shares themselves, not the options. You can manage the timing and potentially use your annual exempt amount (£3,000 for 2025/26) to reduce the gain.
But you then hold shares in a UK company while non-resident. Those shares are still caught by the exit charge on the day you leave. So you have not avoided the charge entirely. You have just moved it from the option to the share.
2. Exercise Within 90 Days of Leaving
For EMI options, exercise within 90 days of leaving. The exit charge on the option is avoided. You are taxed on the shares instead. You can then manage the share disposal later.
3. Sell Before You Leave
If you are leaving permanently and plan to sell your agency anyway, sell before you leave. The exit charge applies on the gain, but at least you have cash to pay it. Selling after you leave means you pay UK CGT anyway (the exit charge or the actual sale gain, whichever comes first).
4. Accept the Charge and Plan for It
Sometimes the exit charge is unavoidable. If you hold unapproved options with no exercise window, you pay the tax. The key is to know the number before you move. Calculate the deemed gain, work out the tax, and ensure you have the cash available.
What About Business Asset Disposal Relief?
BADR (formerly Entrepreneurs' Relief) applies at 14% for disposals from 6 April 2025, rising to 18% from 6 April 2026. The lifetime limit is £1 million of gains.
If you trigger the exit charge on shares in your agency, you may qualify for BADR. The conditions are the same as for a normal disposal: you must hold at least 5% of the shares, be an officer or employee, and have held the shares for at least 2 years.
But BADR does not apply to options. If you trigger the exit charge on unexercised options, you pay the full CGT rate (24% higher rate, 18% basic rate). If you exercise first and hold the shares, BADR may apply to the subsequent disposal of the shares.
This is a significant difference. Options attract the full rate. Shares may attract BADR. Exercise before you leave if you want BADR eligibility.
Practical Steps for Agency Founders
If you are planning to leave the UK and hold share options in your agency, here is what to do:
- Confirm your residence status. Use the statutory residence test. If you are non-resident for less than 5 years, the temporary non-residence rule applies. If you are non-resident for 6+ years, the exit charge is permanent.
- Identify all options and shares. List every EMI option, unapproved option, and shareholding in your agency. Include any shares in holding companies or subsidiaries.
- Get a valuation. You need the market value of your shares and options on the date you leave. HMRC will expect a reasonable valuation. Use a qualified valuer if the amount is significant.
- Calculate the exit charge. Work out the deemed gain and the tax due. Factor in BADR eligibility for shares, not options.
- Plan the timing. If you hold EMI options, exercise within 90 days of leaving. If you hold unapproved options, consider exercising before you leave.
- Ensure you have cash. The exit charge is payable on the normal CGT payment date (31 January following the tax year of departure). If you do not have cash from a sale, you need reserves.
What Most Accountants Miss
Most general practice accountants focus on property CGT and the main residence exemption when a client moves abroad. They assume that if you are not selling anything, there is no tax. That is wrong for share options.
As ICAEW qualified accountants working exclusively with agency founders, we see this regularly. A founder moves to Dubai, keeps their agency running, and gets a letter from HMRC 18 months later demanding tax on options they never exercised. The exit charge is real, and it is often larger than expected.
The other common mistake is assuming that the exit charge only applies to large holdings. It applies to any shares or options that would give rise to a gain. Even a 5% holding in a £500k agency triggers the charge. Do not assume you are too small to be caught.
Final Thoughts
The UK capital gains tax leaving UK exit charge options are not optional. If you hold unexercised share options and leave the UK, you trigger a deemed disposal. The tax is due whether you have cash or not.
Plan ahead. Exercise within the 90-day window for EMI options. Consider selling before you leave if a sale is on the cards. And always get a proper valuation before you go.
If your contractor mix has changed in the last 12 months or you are considering a move, ask your accountant about the exit charge before you book the flights. It could save you tens of thousands.
For more on structuring your agency for international moves, see our guide on incorporation and structure. If you work with digital agencies or creative agencies, the principles are the same.
Contact us for a specific review of your share option position before you change residence.