If you own an agency in the UK and you're thinking about moving to Dubai, the question of exit tax on your shares is probably near the top of your list. The short answer is this: if you hold unlisted agency shares (the kind most founders have in their own limited company), there is no automatic exit charge when you leave the UK. But HMRC has anti-avoidance rules that can create a deemed disposal of those shares. Get the timing or structure wrong, and you could face a tax bill you weren't expecting.
This article covers what UK exit tax on shares means for agency founders moving to Dubai, where the traps are, and what to do before you change your tax residence.
What Is Exit Tax on Shares Moving to Dubai?
Exit tax is the charge that can apply when someone ceases to be UK tax resident while holding certain assets. For most assets (property, listed shares, cryptocurrency), the UK charges capital gains tax as if you sold them on the day you left. But for unlisted shares in a trading company, which is what your agency shares almost certainly are, the rules are different.
Under section 2 TCGA 1992, you are only chargeable to capital gains tax on disposals of assets while you are UK resident. Once you are non-resident, disposals of UK unlisted shares generally fall outside UK CGT. There is no deemed disposal at the point of departure.
This means that, in principle, you can move to Dubai, keep your agency shares, sell them years later while non-resident, and pay no UK capital gains tax. That is the headline. But there are conditions and exceptions that matter.
When Does Exit Tax Apply to Unlisted Agency Shares?
The main exception is the temporary non-residence rule (s.10A TCGA 1992). If you are non-resident for fewer than five complete tax years, and you dispose of your shares during that period, HMRC can treat the gain as arising in the year you left. In effect, you are taxed as if you were still UK resident at the time of disposal.
This is the biggest trap for agency founders who move to Dubai thinking they can sell up quickly and escape tax. If you sell within five years of leaving, the gain is brought back into the UK tax net. You need to stay non-resident for at least five complete tax years before you sell to make the gain tax-free in the UK.
There is also a specific anti-avoidance rule for deemed disposals. If you hold shares in a close company (which most agencies are), and you trigger a capital gains event within the company itself, for example, the company sells a valuable asset, or there is a share buyback, HMRC can look through the structure and treat you as having made a disposal. This is less common for straightforward agency structures, but it is worth knowing about.
What Is Deemed Disposal and Why Does It Matter?
Deemed disposal is the term HMRC uses when they treat you as having sold an asset even though you did not actually sell it. For agency founders moving to Dubai, the most relevant deemed disposal rule is in section 24 TCGA 1992: if your shares become of negligible value, you can claim a deemed disposal and loss. That is a positive rule for you.
But there are negative deemed disposal rules too. If you transfer assets out of the UK while non-resident, or if you restructure your shareholding in a way that HMRC considers a disposal, you can trigger a charge. For example, if you move your agency shares into an offshore trust before leaving, HMRC can treat that as a disposal at market value.
For most agency founders with a straightforward shareholding in their own trading company, deemed disposal is not an issue. The risk is low if you do nothing other than move and hold the shares. But if you start restructuring, moving shares between entities, creating holding companies, or gifting shares to family members, the deemed disposal rules can apply.
How Long Do You Need to Be Non-Resident to Avoid UK Tax?
Five complete tax years. That is the magic number. A UK tax year runs from 6 April to 5 April. If you leave the UK on 1 June 2025, your first complete non-resident tax year is 2026/27 (starting 6 April 2026). You would need to remain non-resident until at least 6 April 2031 to satisfy the five-year rule.
If you sell your shares during that five-year window, the gain is taxed in the UK as if you were still resident. The gain is calculated based on the original acquisition cost, not the value at the date you left. So if your shares were worth £500,000 when you left and £2 million when you sold three years later, the full £1.5 million gain is taxable in the UK.
This is why timing matters. If you are planning an exit, you need to either sell before you leave (paying UK CGT at the prevailing rate) or commit to staying non-resident for at least five full tax years after the sale.
What About Business Asset Disposal Relief (BADR)?
If you sell your agency shares while UK resident, you can claim BADR (formerly Entrepreneurs' Relief) on the first £1 million of gains, currently at a 14% CGT rate (rising to 18% from 6 April 2026). But if you sell while non-resident, BADR is not available. The relief requires you to be UK resident at the time of disposal.
This creates a trade-off. Sell before you leave and pay 14% (or 18% from April 2026) on up to £1 million of gains, with the balance at 24%. Or move to Dubai, wait five years, and pay 0% UK tax on the entire gain. For a founder with a £2 million gain, the difference is significant.
But remember: if you sell while non-resident within the five-year window, you lose BADR and pay full UK rates anyway. There is no halfway house. You are either UK resident and eligible for BADR, or you are non-resident and outside the UK CGT net entirely (after five years).
What About UAE Tax on Your Agency Shares?
The UAE has no capital gains tax for individuals. If you are a UAE tax resident (which requires meeting the physical presence or economic activity tests), you pay 0% on any gain from selling your agency shares. There is no exit tax in Dubai on share disposals.
But you need to be genuinely tax resident in the UAE. That means spending at least 183 days in the UAE per tax year, or meeting the new economic substance test introduced in 2023. A holiday home and a few weeks per year will not cut it. HMRC will challenge your non-residence if your ties to the UK are stronger than your ties to the UAE.
You also need to consider the double taxation agreement between the UK and UAE. The UK-UAE DTA gives the UAE sole taxing rights over gains on shares in companies that are resident in the UAE. But your agency is UK-resident, so the DTA allocates taxing rights to the UK. However, the UK's domestic law (the temporary non-residence rule) is what actually creates the charge. The DTA does not override that.
Practical Steps Before You Move
If you are serious about moving to Dubai and keeping your agency shares, here is what you need to do before you go.
1. Establish Your UK Departure Date
Your date of departure determines when you cease to be UK resident under the Statutory Residence Test. You need to be able to prove that you left the UK permanently (or at least for the foreseeable future). Keep records of flights, rental agreements, and utility cancellations.
2. Check Your Share Structure
If you hold shares through a trust, a holding company, or an offshore structure, the deemed disposal rules are more likely to apply. A direct shareholding in your trading company is the cleanest structure for a tax-free exit after five years. If your structure is complex, you may need to simplify it before you leave.
3. Consider Selling Before You Leave
If your exit is imminent and you cannot wait five years, selling while UK resident and claiming BADR may be the better option. Work through the numbers with your accountant. A 14% tax bill now may be better than a 24% bill later, or the risk of falling foul of the temporary non-residence rule.
4. Plan Your Return Date
If you think you might return to the UK within five years, do not sell your shares during that period. Wait until you are back and UK resident again, then sell and claim BADR if you still qualify. The temporary non-residence rule only applies to disposals made while non-resident.
What About Corporation Tax on the Company Itself?
Moving to Dubai does not change the company's tax position. Your agency remains UK-resident for corporation tax purposes unless you migrate the company itself (which is complex and rarely worth it for a trading business). The company continues to pay UK corporation tax on its profits at 19% or 25%, depending on profit levels.
If you take dividends from the company while non-resident, those dividends are subject to UK withholding tax at 0% (no withholding on dividends paid to individuals), and you pay no further UK tax on them as a non-resident. But the company still pays corporation tax on the profits before distribution.
Common Mistakes Agency Founders Make
I see three recurring errors when founders move to Dubai with agency shares.
Mistake 1: Selling within five years without realising the gain is taxable. The temporary non-residence rule catches people who think they can sell tax-free after two years. You cannot. Five complete tax years is the minimum.
Mistake 2: Gifting shares to a spouse or trust before leaving. This can trigger a deemed disposal at market value. If you want to restructure, do it while UK resident, or wait until after the five-year window.
Mistake 3: Not keeping proper residence records. HMRC can challenge your non-residence status years later. If you cannot prove you were genuinely living in Dubai, they will treat you as UK resident and tax the gain. Keep flight records, tenancy agreements, and bank statements.
Final Thoughts
UK exit tax on shares moving to Dubai is not an automatic charge for agency founders with unlisted shares. The deemed disposal rules are narrow and rarely apply to straightforward shareholdings. But the temporary non-residence rule is a real trap. If you sell within five years, the gain is taxed in the UK as if you never left.
Plan your departure date, your share structure, and your exit timeline carefully. If you are unsure about any of these points, speak to an accountant who understands both UK and UAE tax rules. Our ICAEW qualified team at Agency Founder Finance works with agency founders on these exact scenarios, get in touch if you want to run through your numbers.
For more on structuring your agency for a future exit, read our guide on growth and exit planning for agency founders.