Why the SRT singles out aircrew: the relevant-job rule
The Statutory Residence Test contains a special regime for people who work on board vehicles, aircraft and ships while they travel. You have a relevant job if two conditions are met: you hold an employment whose duties are performed on board an aircraft (or vehicle or ship) while it is travelling, and substantially all of the trips you make in performing those duties are cross-border trips, meaning trips that involve crossing an international boundary at sea, in the air or on land (RFIG20780, HMRC).
HMRC puts a working number on substantially all: an individual is likely to have a relevant job if 80% or more of their journeys are cross-border trips. Duties merely incidental to the on-board duties are ignored in making that judgement. A long-haul pilot, a short-haul pilot on European sectors and international cabin crew all sit comfortably inside the definition. Crew flying only UK domestic sectors generally do not, because their trips never cross an international boundary.
The label is not a technicality. It changes which SRT tests you may use and how your UK workdays are counted, and both changes work against you.
The full-time-work-abroad door is closed to aircrew
Most people who leave the UK for a full-time job overseas rely on the third automatic overseas test: work sufficient hours overseas with no significant break, keep UK workdays of more than 3 hours below 31, and keep total UK days below 91, and you are automatically non-resident (RFIG20140, HMRC).
That test carries an explicit carve-out. It does not apply to an individual who has a relevant job on board a vehicle, aircraft or ship at any time in the tax year, where at least 6 of the trips made that year as part of the job are cross-border trips that begin in the UK, end in the UK, or begin and end in the UK. Six trips is nothing on an airline roster: a single week of UK-touching flying can use them up. The mirror-image exclusion applies to the third automatic UK test, the 365-day full-time-work-in-the-UK test, on the same 6-trip condition (RFIG20370, HMRC).
What is left? The pure day-count tests still work. A leaver who was UK resident in 1 or more of the previous 3 tax years is automatically non-resident by spending fewer than 16 days in the UK (RFIG20120, HMRC), and someone not resident in any of the previous 3 years qualifies with fewer than 46 days (RFIG20130, HMRC). At the other end, 183 days or more in the UK makes you automatically resident. Between those extremes, and that is where most flying crew live, everything is decided by the sufficient ties test.
Sufficient ties: where aircrew residence is actually decided
The ties test measures your UK day count against your UK connections. Everyone considers four ties: a family tie, an accommodation tie, a work tie and a 90-day tie. Anyone who was UK resident in 1 or more of the 3 previous tax years, which means every newly departed crew member, also has to consider a fifth, the country tie (RFIG20510, HMRC). The more ties you keep, the fewer days you are allowed.
| Days spent in the UK in the tax year | UK ties that make you resident |
|---|---|
| 15 or fewer | Always non-resident under the first automatic overseas test |
| 16 to 45 | At least 4 ties |
| 46 to 90 | At least 3 ties |
| 91 to 120 | At least 2 ties |
| More than 120 | At least 1 tie |
The bands come straight from HMRC's manual (RFIG20520, HMRC). Read them from a crew member's point of view: a pilot with a spouse in the UK (family tie), a home they can use (accommodation tie) and a UK-touching roster (work tie, as the next section explains) carries 3 ties, and just 46 UK days makes them UK resident on their entire worldwide pay. Planning a clean departure is therefore about shedding ties before the move, not just cutting days after it.
The work tie trap: a departure out of Heathrow is a UK workday
You have a work tie for a year if you do more than 3 hours of work a day in the UK on at least 40 days in that year, and the days need not be consecutive (RFIG20560, HMRC). For everyone else, that means counting actual hours. For relevant-job holders the counting is replaced by a brutally simple rule: on any day on which you make a cross-border trip that starts in the UK, you are treated as having worked more than 3 hours in the UK that day (RFIG20800, HMRC). HMRC's own example is a cabin crew member who worked only 1 hour in the UK before an outbound flight; the day still counts as a UK workday.
The rule runs the other way for inbound sectors: a cross-border trip that starts outside the UK is treated as not being more than 3 hours of UK work, provided you do not make another trip the same day that starts in the UK. An inbound-then-outbound turnaround on the same day is caught by the outbound leg.
The arithmetic follows directly. Forty UK departures in a tax year is well under one a week. Crew based at a UK airport will hold the work tie essentially automatically, and Gulf-based crew who regularly operate the return leg out of London can accumulate it without noticing. If the roster can be shaped so that UK-originating sectors stay below 40 days, one tie disappears and a whole day-count band opens up.
Day-count discipline: midnights, the deeming rule and transit
The basic rule is that you spend a day in the UK if you are here at the end of the day, meaning midnight (RFIG20710, HMRC). Crew sometimes read that as a licence for same-day turnarounds: land in the morning, fly out in the evening, no midnight, no day. The deeming rule exists precisely to stop that pattern.
The deeming rule applies when three conditions are all met: you were UK resident in 1 or more of the 3 previous tax years, you have at least 3 UK ties for the year, and you are present in the UK on more than 30 days without being present at the end of the day. Once all three are met, every qualifying day after the first 30 is treated as a day spent in the UK (RFIG20720, HMRC). A recently departed pilot with 3 ties who operates 70 same-day UK turnarounds in a year adds 40 deemed days to their count, quite apart from any midnights. One carve-out: the deeming rule does not apply when testing the 90-day tie.
Two softer edges are worth knowing too. A transit day, where you arrive as a passenger and leave the next day as a passenger without doing anything substantially unrelated to your passage through the UK, does not count, but the treatment is lost if you spend time in your UK home, catch up with friends or do anything work-related (RFIG20730, HMRC). And days spent in the UK due to exceptional circumstances can be ignored for many parts of the SRT, but only up to 60 days in a tax year, and HMRC stresses that the 60 days are a limit, not an allowance (RFIG22220, HMRC).
What the treaties actually say about aircrew pay
Aircrew have their own paragraph in the employment article of most double tax treaties. HMRC's Double Taxation Relief Manual describes the pattern: remuneration for employment as a member of the crew of a ship or aircraft in international traffic may be taxed either in the state of residence of the employer or in the state in which the place of effective management of the enterprise is situated, depending on the wording of the particular agreement (DT1920, HMRC). The same split runs through the profits article for airlines themselves: most UK agreements tax the profits of operating aircraft in international traffic only in the operator's country of residence, while some use the place of effective management instead (INTM153090, HMRC).
The differences between individual UK treaties are not cosmetic, as three current examples show.
| Treaty | Who can tax international-traffic aircrew pay | Why it matters |
|---|---|---|
| UK-Spain (2013), Article 14(3) | May be taxed in the state where the enterprise operating the aircraft is resident | A Spain-based pilot flying for a UK airline can still face UK tax on the pay under the treaty |
| UK-Qatar (2009), Article 14(3) | May be taxed in the state of the enterprise operating the aircraft | Qatar as the airline's state holds taxing rights over Qatar Airways crew pay |
| UK-UAE (2016), Article 14(3) | Taxable only in the crew member's state of residence | A UAE-treaty-resident crew member's international-traffic pay is outside UK tax, even for UK-touching duties |
Each row is taken from the treaty text as published on GOV.UK: the Spain wording from the synthesised 2013 convention (GOV.UK), the UAE wording from the 2016 convention (GOV.UK) and the Qatar wording from the synthesised 2009 convention and protocol (GOV.UK). The Qatar treaty even carries a curiosity at Article 14(4): a four-year host-state exemption for airline employees who are nationals of the same state as the airline. It does nothing for a British pilot joining Qatar Airways, because a British national is not a national of the airline's state.
One anchor point sits underneath all of this. A non-resident employee is within UK tax on earnings for duties performed in the UK under section 27 ITEPA 2003 (EIM40102, HMRC). So a non-resident crew member's UK-touching duty days are UK-taxable by default, and it takes a treaty article of the UAE type, giving sole taxing rights to the residence state, to switch that off. Whether you can claim that article depends on being a treaty resident of the other state in the first place: the UAE convention defines a resident individual by domicile, habitual abode or centre of vital interests in the UAE, not by a simple day count.
Emirates, Qatar Airways, Etihad: what a Middle East move turns on
For crew joining a Gulf carrier, the tax outcome does not primarily come from a treaty. It comes from the SRT. If you are genuinely non-resident for the whole tax year, the UK simply has no charge on your foreign employment income; UK tax is limited to earnings for duties performed in the UK, and even those can fall away under the UAE treaty article for treaty-resident crew. If you get the SRT wrong and remain UK resident, your entire Emirates, Qatar Airways or Etihad salary is within UK tax, and there is no local tax paid in the Gulf to credit against the bill. The whole result flips on residence status, which is why HMRC looks at these cases closely.
And aircrew are structurally exposed on exactly that question. The full-time-work-abroad test that protects a UK accountant who moves to Dubai or Qatar is unavailable to you, so you cannot cure a heavy UK presence by pointing at a full-time Gulf contract. Everything reduces to ties and days: the family tie if your spouse or minor children stay in the UK, the accommodation tie if the family home remains available, the work tie that a London-rotating roster hands you almost automatically, the 90-day tie in the first years after departure, and the country tie if you still spend more midnights in the UK than anywhere else. A newly departed crew member carrying 3 of those ties is UK resident from just 46 days. In the departure year itself split-year treatment has its own conditions, so the timing of the move matters as much as the move. Our guide for British expats in the Gulf covers the wider picture, and anyone planning to come back within a few years should read the temporary non-residence rules first.
HMRC compliance: what an aircrew enquiry looks like
Aircrew non-residence claims are unusually easy for HMRC to test, because the evidence is documentary and third-party. Rosters, crew logs, tickets and boarding passes fix your location day by day. HMRC's own record-keeping guidance for the ties test expects individuals to retain their travel schedule and details, tickets and boarding cards including e-tickets, contracts of employment, and records of when they were present at their home or other available accommodation (RFIG21940, HMRC). If HMRC asks and you cannot produce a day-by-day account, the enquiry starts from their reconstruction, not yours.
The classic errors are the ones this guide has already flagged: claiming automatic non-residence under a test that is switched off for relevant-job holders, counting only midnights and ignoring the deeming rule, and missing the work tie because outbound UK sectors were not treated as UK workdays. The stakes are long-tailed as well as high: for income tax involving offshore matters or offshore transfers, HMRC can assess up to 12 years after the end of the tax year, well beyond the normal 4 and 6 year limits (CH53510, HMRC). The discipline that protects you is unglamorous: a contemporaneous day log reconciled to rosters, with the ties reviewed before each 6 April rather than after.
How Horizon helps pilots and cabin crew
We are UK Chartered Tax Advisers and this is our core work: SRT positions for people the standard tests do not fit, departure planning that sheds ties before the move rather than arguing about them afterwards, split-year and SA109 filings, and treaty analysis against the actual article wording rather than the folklore. For crew already under enquiry, we rebuild the day count from rosters and travel records and put the position to HMRC properly.
Everything is a fixed fee agreed upfront, with one-off advice from £350 depending on scope, so you know the cost before we start. If you are moving to a Gulf carrier, commuting to a foreign base or worried about a year already flown, book a free clarity call at /book or read about how we work with leavers at /services/expat-tax-adviser.

