Growing Between the UK and UAE? 10 Tax Traps Founders Often Miss

Dubai and Abu Dhabi have become a natural next step for UK founders scaling internationally.

Low corporate tax, fast company formation, and a genuine commercial gateway to the Gulf, Africa and Asia make the appeal obvious. But moving between the UK and UAE creates a layer of tax complexity that catches out even experienced founders, because "no tax in Dubai" is a much simpler story than the one HMRC and the UAE's Federal Tax Authority actually tell.

The UK-UAE double tax treaty, in force since 2016, is there to stop you being taxed twice on the same income.

It doesn't decide where you're tax resident in the first place, and it won't rescue a structure that isn't commercially real. Here are ten traps we see founders walk into, often without realising until it's expensive to unwind.

1. Assuming a UAE company address makes the company UAE tax resident

Setting up a UAE entity doesn't automatically move its tax residency out of the UK. If the strategic decisions, board meetings and real management still happen from the UK, HMRC can treat the company as UK tax resident under "management and control" rules regardless of where it's incorporated. A UAE company with a UK-based founder still making all the calls is a red flag, not a tax plan.

2. Underestimating the Statutory Residence Test

Moving to Dubai doesn't automatically make you a UK non-resident. The Statutory Residence Test looks at days spent in the UK, ties such as family and property, and how much UK work you're doing. Spend more than 40 days a year working in the UK, with over three hours of work on each of those days, and you can trigger the SRT's "work tie", keeping you UK tax resident even while living full-time in the UAE.

3. Creating a permanent establishment without meaning to

If UK-based staff, agents or even the founder are regularly carrying out core business activity in the UK, that can create a UK permanent establishment for the UAE company, pulling those profits back into UK tax. This is one of the most common and most avoidable traps in founder-led structures, and it usually comes down to where the actual work, not just the paperwork, happens.

4. Treating the UAE as a zero-tax jurisdiction

That reputation is outdated. Since June 2023, the UAE applies a 9% federal corporate tax on taxable profits above AED 375,000. Free zone companies can still qualify for 0% on qualifying income, but only if they meet specific conditions. Assuming blanket zero tax leads to underestimated liabilities and missed registration deadlines.

5. Assuming dividends are automatically tax free

The UAE doesn't tax dividends, but if you remain UK tax resident, dividends from your UAE company generally form part of your worldwide income and are taxable in the UK. Founders who assume a UAE dividend is simply "clean money" are often the ones facing the largest unplanned tax bills.

6. Forgetting UK property income stays taxable regardless of where you live

If you keep UK property, whether that's a home, a buy-to-let or commercial premises, the rental income and any gain on sale generally remain taxable in the UK, no matter where you or your company are resident. Relocating doesn't switch this off.

7. Ignoring the inheritance tax tail

The double tax treaty covers income and capital gains, but not inheritance tax. Under the current residence-based IHT rules, long-term UK residents (broadly, those UK resident for 10 or more of the last 20 years) who move to the UAE can remain within the scope of UK inheritance tax on their worldwide assets after leaving. The exact tail runs from three to ten years depending on how long they were UK resident beforehand, so this catches out founders who assume relocation ends their UK IHT exposure the moment they leave.

8. Overlooking UAE substance requirements

UAE free zone companies benefiting from the 0% corporate tax rate need to prove genuine substance locally, real decision-making, adequate staff, and physical presence, not just a licence and a registered address. This used to sit under standalone Economic Substance Regulations, but those filings were retired for financial years starting on or after 1 January 2023. The substance test didn't disappear, it moved into the Corporate Tax law itself, as one of the conditions for Qualifying Free Zone Person (QFZP) status. A UAE company that exists mainly on paper still risks losing its 0% rate, just under a different rulebook.

9. Mixing up UK and UAE VAT rules

UK VAT and UAE VAT (currently 5%) are separate systems with different registration thresholds, different rules on cross-border services, and different treatment of digital and B2B supplies. Founders trading both markets often assume one VAT registration covers everything, or that UK MTD digital record-keeping requirements extend to UAE filings. They don't, and getting this wrong on invoices issued between the two entities is a common source of errors.

10. Not claiming treaty relief properly

Relief under the UK-UAE treaty isn't automatic. You typically need to prove your tax residency, often with a Tax Residency Certificate from the relevant authority, and actively claim relief rather than assume it applies. Founders who skip this step can end up paying tax twice on the same income simply because the paperwork was never filed.

The common thread

Nearly every one of these traps comes back to the same issue: the structure on paper doesn't match where the business is genuinely managed, staffed and controlled. Tax authorities on both sides look past the incorporation certificate to the substance underneath it. A UAE company with real local decision-making, staff and operations gets the tax benefits it's built for. One that's UAE in name and UK in practice tends to attract the attention of both HMRC and the FTA.

How Zyla Accountants can help

Structuring a business across the UK and UAE well from the outset is far easier than untangling it after HMRC or the FTA raise questions. We work with founders and businesses operating across both jurisdictions to get residency, structure, VAT and reporting right from day one, so growth doesn't come with a tax bill you didn't see coming.

If you're weighing up a UK-UAE structure, or already operating across both and want a second opinion, get in touch and we'll talk it through.