Airline pilot tax: US duty days, crew expense claims, and residency answers

The T1 carries everything, wherever the flight went

A pilot who is a Canadian tax resident reports worldwide employment income on the T1 — the Toronto-based captain flying for a Canadian carrier and the Mississauga first officer commuting to a US hub both start from the same place. What changes is the paperwork around the T1: a W-2 instead of (or beside) a T4, US withholding to recover or credit, and sometimes a state return. Getting the Canadian return right means getting the US-source arithmetic right first, because the foreign tax credit on the T1 can only absorb US tax the treaty actually lets the US keep.

US duty days and the international-traffic rule

The Canada-US treaty has a rule written almost specifically for flight crews: pay for employment regularly exercised aboard an aircraft in international traffic is taxable only in the country where the crew member lives. For a Canadian resident, that means transborder and overseas legs — even flown for a US carrier — belong to Canada alone. But international traffic excludes flying solely between points inside the US, so US domestic legs for a US airline fall back on the ordinary employment rules, and the US can tax the pay allocated to those duty days.

The order of operations matters. If withholding was taken on treaty-exempt pay, the fix is a US refund claim, not a Canadian credit — CRA will deny a foreign tax credit for US tax that the treaty says the US was never entitled to. State tax is usually a smaller worry than pilots fear: US federal law generally limits state taxation of a nonresident airline crew member to the state where more than half of scheduled flight time occurs, which for most Canadian commuters is nowhere.

Employment expenses that survive a review

Crew expense claims are narrow, and CRA reviews them often — so we claim what the rules support and document it properly:

• TL2 meals and lodging: as a transport-sector employee regularly away from your home terminal's municipality, you can claim meal costs at the 50% limit — but only net of the non-taxable per-diems the airline already paid, which for many pilots shrinks the claim to little or nothing. We run the math honestly before filing it.
• T2200-backed expenses: any T777 claim needs a Declaration of Conditions of Employment signed by the airline. No T2200, no deduction — we request it from the carrier early, not in April.
• Union and professional dues: ALPA or association dues and annual professional fees deduct directly, and they are frequently missing from commuter pilots' returns because they never hit a Canadian T4 box.

What does not work: claiming uniforms, headsets, or type-rating costs without employer certification, or claiming meals already covered by allowances. A tidy, defensible claim beats an aggressive one that unravels in a review letter.

Residency: the question behind every base change

Taking a US base does not make you a US tax resident — and keeping a Canadian address does not automatically keep you Canadian either. Factual residency follows your ties: home, spouse and kids, accounts, health coverage. A pilot who commutes to a US hub while the family stays in Brampton remains a Canadian resident taxed on worldwide income, with the treaty tie-breaker as backup if the US ever claims otherwise. Genuinely moving abroad is a different event, with departure tax on unrealized gains and a final part-year return — worth planning a year ahead, not announcing after the fact.

Pilots with green cards, US citizenship, or leftover 401(k) accounts from US carrier years carry extra filings on both sides. Our cross-border tax guide for airline pilots covers the treaty article, US carrier employment, and state-day questions in depth, and our tax services page shows how we price this work on fixed fees after a discovery call.

Source: CRA — Determining your residency status.