Resident or not: the question that decides it
Your residence status under the Statutory Residence Test drives everything. If you are UK resident, you are taxable on your overseas rental profits whether or not you bring the money to the UK: overseas property income is charged to UK income tax as the profits of an overseas property business, in the same way UK lets are charged. That the rent sits in a Canadian account, is reinvested there or has already been taxed in Canada makes no difference to whether it is taxable here. If you are non-UK resident, the position flips and Canadian rent falls outside UK tax entirely. The one main exception for residents is a recent arrival who validly claims the 4-year FIG regime, covered below. Our foreign rental income guide sets out the full mechanics.
How the Canadian rent is computed and reported
Canadian rental income goes on the SA106 foreign pages, in the property section, filed with your SA100 main return and never on its own; UK lets stay on the separate SA105 pages. All your overseas lets are pooled into a single overseas property business, so income and expenses across them produce one net profit or loss, and an overseas loss is ring-fenced to future overseas property profits. You deduct expenses incurred wholly and exclusively for the letting, such as agent fees, insurance, repairs and local property taxes, but mortgage interest is restricted to a basic-rate (20%) tax reducer rather than a full deduction, exactly as for UK residential lets. Convert Canadian dollar figures to sterling on a consistent, reasonable basis and keep the workings. Filing from a first-year arrival's perspective is covered in our expat Self Assessment guide.
Avoiding double tax, and the FIG window
Canada will usually tax the rent too, and Foreign Tax Credit Relief stops the same income being taxed twice: the credit is the lower of the Canadian tax actually paid on that rent and the UK tax due on the same income, worked out source by source. If the Canadian rate is higher, the credit is capped at the UK figure and the excess is not repaid. Only Canadian tax properly due under Canadian law and the double tax treaty qualifies. A recent arrival who became UK resident after at least ten consecutive non-resident tax years can instead claim the 4-year FIG regime to exclude Canadian rent arising on or after 6 April 2025 for up to four years, at the cost of the Personal Allowance in a claim year. Rent that has gone unreported should be put right through the Worldwide Disclosure Facility before HMRC makes contact.