What makes cabin crew different from an ordinary filing?
Cabin crew fall under the same international-traffic article as flight deck, but base changes and multi-employer contracts mean the article has to be reapplied every time the roster changes. A base transfer can change which country taxes the whole year. An ordinary preparer applies the general rule and stops there, which is how the relief in the specific provision goes unclaimed.
Can you work with my existing accountant?
That is how most of these engagements run. They keep the domestic file, we take the cross-border piece, and the boundary is agreed in writing so nothing is done twice or missed.
I changed base mid-year, so which country taxes my salary?
Potentially both, for different parts of the year, and the analysis has to be done again from the date the base changed rather than applied once for the whole year. Crew fall under the same international traffic article as flight deck, and that article looks at matters such as where the employer sits, where the employment is exercised and where you are resident, all of which a base transfer can move. The practical consequence is that a year can split into two periods with different answers, and a payroll that carries on deducting as before is not evidence of anything.
Are my flight allowances taxable if the airline says they are not?
The airline is telling you how it treats the payment under the rules of the country it runs the payroll in. Your own country may not classify the same allowance in the same way, particularly where it is paid as a flat amount per duty rather than as reimbursement of a documented cost. Both statements can be accurate at once and you can still have a liability nobody has mentioned. Keep the roster and the allowance breakdown from each pay statement, because the treatment usually turns on what the payment is actually for, and only those documents show it.
Two payrolls taxed the same months of my salary, so what now?
First establish which country had the right to tax that period, because the answer determines who refunds. Overlaps of this kind typically follow a base change, a transfer between group employers, or a contract that ran on after a move. The remedy is usually a combination: a return in the country that over-collected, to recover the deduction, and a return in the country entitled to the tax, reporting it properly, with relief claimed where both retain a claim. What does not work is stopping at whichever return produces the refund, because the two have to agree with each other.
Am I tax resident anywhere if I am based abroad and always flying?
Almost always yes, and the impression of being resident nowhere usually comes from applying day counts alone. Most countries look first at ties: a home available to you, family, where your possessions and bank accounts sit, where you return between rosters. Crew often keep enough of those at home to remain resident there throughout a posting, even with very few days on the ground. Where two countries each conclude you are resident, the treaty tie-breaker decides in a set order. The outcome is a position you can state and evidence, which is what banks and payroll departments are asking for.
My bank wants proof of tax residency, so what do I give them?
A certificate of residence issued by the tax authority of the country you are resident in, which is the document banks and payers are actually asking for when they send those forms. It is issued on application and normally requires that your filings there are up to date and consistent with the claim. If your returns say one thing and the bank form says another, the certificate is the point at which that surfaces. Settle the residency position first, file on it, then apply. Answering the form with whichever country feels right creates a record you will have to live with.
Does the international traffic article apply to cabin crew as well as pilots?
Yes. The article covers employment exercised aboard an aircraft operated in international traffic and does not distinguish between flight deck and cabin. What differs in practice is the shape of the career: multiple employers, agency contracts, wet-lease arrangements and base moves are common, and the article has to be applied afresh to each employment and each period. That is why two crew working the same aircraft can have genuinely different answers. Treat each contract and each base as its own question rather than assuming that last year's conclusion still holds.
How do I actually stop being taxed twice?
In this order. Fix your residence under each country's own rules, and if both claim you, apply the treaty tie-breaker. Identify where each type of income is sourced. Read the article that covers that income type, because it decides who taxes and at what maximum rate. Then claim the relief on the residence-country return, with proof of the foreign tax. Most of the tax people lose to double taxation is lost at the last step, not the first. See how double taxation is relieved.
Is the sale of foreign property taxable where I live?
For a resident, yes — worldwide gains are taxable, and the gain is computed in your own currency, so the exchange rate at purchase and at sale changes the number even when the local-currency price did not move. The country where the property sits usually taxes it too, often with a withholding or clearance step before closing, and that tax becomes a credit. A principal residence relief may apply to a home abroad on the same terms as one at home. See principal residence and foreign property.