Moving to the UAE is the easy bit. The harder bit is breaking UK tax residency cleanly, surviving the Statutory Residence Test, handling rental property and pensions, and not tripping the 5-year temporary non-residence trap. This is the chartered accountant view, written for founders.
Skip any one of them and HMRC has a thread to pull. Get all four right and you wake up on 6 April outside the UK tax net with documentation to prove it.
The day-count and ties framework that decides residence under Schedule 45 of the Finance Act 2013. Pass this and you are non-UK resident for the tax year.
If you leave mid-year, the tax year splits into a UK part and an overseas part. You only get it if you meet one of the 8 qualifying cases in RDR3.
Voluntary Class 2 ends 5 April 2026. Class 3 continues but at roughly 5x the cost. Decide pension contribution strategy for the 5-year overseas window.
Property goes onto the NRL scheme. ATED applies if the property is company-owned and over GBP 500,000. Plan share sales and dividends against the 5-year rule.
Three questions. This estimator surfaces the likely SRT outcome under the sufficient ties framework. It is not a substitute for full advice, just a directional read.
At 46 to 90 days with 1 tie as a leaver, you fall short of the 3-tie threshold. Treat this as a clean exit, but document the day count carefully.
Estimator only. The automatic overseas tests, automatic UK tests, and edge cases (full-time work overseas, home in UK, 30-day rule) are not modelled here. Always cross-check against the full RDR3 framework and HMRC's Tax Residence Indicator tool before relying on the answer.
The sufficient ties test reads inversely. The more days you spend in the UK, the fewer ties you are allowed to hold before being pulled back into UK residence. Leavers (UK resident in any of the last 3 years) face tighter rules than arrivers.
| Days in UK (midnights) | Leaver: ties to be resident | Arriver: ties to be resident |
|---|---|---|
| Under 16 | Auto non-resident | Auto non-resident |
| 16 to 45 | 4 or more | Auto non-resident |
| 46 to 90 | 3 or more | All 4 (arriver has no country tie) |
| 91 to 120 | 2 or more | 3 or more |
| 121 to 182 | 1 or more | 2 or more |
| 183 or more | Auto UK resident | Auto UK resident |
Source: HMRC Residence and FIG Regime Manual, RFIG20520. Country tie applies only if you were UK resident in any of the last 3 tax years.
Stack ties without realising it and your safe day count shrinks fast. A founder with a spouse in the UK, a London flat available, and 50 days of UK board meetings already has 3 ties before counting anything else.
Your spouse, civil partner, or minor child is UK tax resident in the year.
UK accommodation available to you for 91 consecutive days and stayed in for at least 1 night.
40 or more days of substantive UK work (3+ hours of work) in the tax year.
90 or more UK days in either of the previous 2 tax years.
More UK days than days in any other single country. Leavers only.
Most founders moving mid-year want a split year. The tax year is divided into a UK part (taxed as resident) and an overseas part (treated as non-resident for most purposes). You do not apply for it. HMRC grants it where one of 8 cases in RDR3 applies.
Case 1, full-time work overseas. You start full-time overseas employment, work an average of 35+ hours per week with no breaks of more than 31 days, and meet the day-count limits for the overseas part. UAE employment contracts typically qualify if the hours hold up.
Case 2, partner of a Case 1 leaver. Your spouse or civil partner qualifies under Case 1 and you join them overseas. You become non-resident from the day you join.
Case 3, ceasing to have a UK home. You stop having any UK home. You spend fewer than 16 UK days in the overseas part. Within 6 months you must either be tax resident in another country, present in a single foreign country for every day of that 6-month period, or have only foreign homes.
If none of these apply, the year is fully UK resident even if you physically left.
Under Schedule 45 Finance Act 2013, if you were UK resident in at least 4 of the 7 tax years before leaving and you return to UK residence within 5 full tax years, certain income and gains realised during your absence are taxed in the UK in the year of return.
Capital gains on assets owned at departure (other than UK land, which is already chargeable under NRCGT). Distributions from close companies. Pension flexi-access drawdown lump sums. Certain offshore income gains. Lump sums from EBTs. The list is specific but wide.
The intent of the rule is to stop UK residents from leaving for 18 months, taking a tax-free gain, and slipping back. The drafting catches genuine 4-year overseas moves that turn into 4.5-year ones too. Plan the timeline around the 5-year line.
Schedule 45 Finance Act 2013, Part 4. See also HMRC manual RFIG29000 onwards.Rental income from UK land stays UK-taxable for non-residents. UK property gains are reportable within 60 days of completion. ATED applies to high-value residential property held in a company structure. Each of these has paperwork that quietly compounds if ignored.
If you let UK property and live abroad for 6+ months in a tax year, you are in scope of the NRL scheme. By default your letting agent or tenant withholds 20% basic-rate tax from rent paid to you. You file form NRL1 (individual), NRL2 (company), or NRL3 (trustee) to receive rent gross, and then settle through Self Assessment.
HMRC approval typically takes around 30 days. You still file UK Self Assessment annually and claim allowable expenses against the rent. Mortgage interest restriction still applies the same way as for UK-resident landlords.
UK property gains. Non-Resident Capital Gains Tax (NRCGT) applies to UK land disposals. Rebased to April 2015 for residential and April 2019 for non-residential and indirect disposals. Report and pay within 60 days of completion.
For UK residential dwellings owned by a company or partnership with a corporate member. File and pay by 30 April 2026. Reliefs apply for property rental businesses (still requires a relief declaration return).
From 6 April 2026, only voluntary Class 3 is available for periods abroad. That moves the annual cost from roughly GBP 182 (Class 2 in 2025/26) to about GBP 923 (Class 3). New Class 3 applicants from overseas need 10 years of UK residence or 10 years of prior contributions.
If you have 2024/25 or 2025/26 gaps to fill and you are eligible for Class 2 on the legacy basis, file before 5 April 2026 to lock in the cheaper rate. After that, the only voluntary route is Class 3 at the new pricing.
Source: HMRC announcement 26 November 2025 ("Changes to voluntary National Insurance contributions for periods spent abroad").Every mistake below is something we have seen unwind a clean-looking exit in the first follow-up enquiry. Most are silent until HMRC asks for the day count and the trail of evidence.
An empty London flat that you could fly back to and sleep in for 1 night gives you the accommodation tie for the whole year. Either rent it on an arm's-length tenancy of 91+ days, or accept the tie and budget for it in the day count.
Tenants and letting agents must withhold 20% by default if you have not filed NRL1. The withholding is reclaimable, but the cashflow drag and admin overhead is avoidable with one form. File before the first overseas rent payment.
A "quick UK board day" of 3+ hours counts as 1 work day. Reach 40 in a tax year and you have a work tie. Founders building cross-border teams underestimate this and end up with the work tie plus accommodation tie plus 90-day tie. That is 3 ties straight away.
Selling shares or taking a directors' loan dividend in year 2, then moving back in year 4, drags the income back into UK tax under the temporary non-residence rules. Either commit to 5 full tax years overseas, or take the gain before departure.
SA109 is how you claim split-year treatment, declare non-residence, and lock in the position. Filing the main return without it leaves HMRC reading a partial picture. Pair it with a clear "residence basis claim" note and contemporaneous day records.
30 minutes. You bring your departure date, any UK property, your pension and ISA position, and your 5-year plan. We map the SRT, the split-year case, and the cleanest exit timeline.
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