Do I file a Canadian return for dividends already taxed at source?
Often there is nothing to file, and that is the answer people least expect. Canadian dividends and interest paid to a non-resident are generally taxed by withholding at the moment of payment rather than by assessment afterwards, so the rate the payer applied is usually your final Canadian tax on that income. If the correct rate was applied, the obligation is already discharged. Filing becomes relevant for a different reason: recovering tax withheld above the rate a treaty allows. The first question is therefore not what to file but what rate was applied and whether it was right.
My broker withheld the full statutory rate — how do I get the treaty rate?
The treaty rate is applied by the payer, not claimed by you at the year end, and the payer can only apply it if a valid declaration of your eligibility is on its file before the distribution goes out. If the declaration was missing, stale, or named the wrong country of residence, the statutory rate is what you get. Two pieces of work follow. Lodge a current declaration so the next distribution is right, and make a refund application for the excess already withheld. The second has its own time limit, so the order is: fix the file, then reclaim.
What declaration does my Canadian payer need to hold for me?
Something that lets the payer satisfy itself, in advance, that you are resident in a treaty country and entitled to the reduced rate on that class of income. In practice it is a signed statement of residence and entitlement held on the payer own file, refreshed when it goes out of date or when your circumstances change. The payer carries the exposure if it withholds too little, which is why the paperwork is taken seriously and why an incomplete form is quietly answered with the statutory rate rather than a telephone call. Give the payer a complete file and the rate follows.
Is the tax withheld on my Canadian interest my final tax?
Generally yes. This income is taxed at source, so once the correct amount has been withheld and remitted the Canadian charge is settled and no assessment follows. Two things disturb that. The rate applied may be higher than the treaty permits, in which case the excess is recoverable but only through an application made in time. Or the receipt may not be of a kind the treaty reduces at all, in which case the statutory rate is correct and there is nothing to recover. Establishing which of the two you are in is the whole of the job.
How long do I have to reclaim over-withheld Canadian tax?
There is a limit, it runs from the year of the withholding, and it is the reason these files are urgent rather than tidy. We can give you the date that applies to your years once we see when each distribution was paid, because the answer is driven by those dates and not by when you noticed. Two practical points. Older years can fall away while newer ones are still open, so a claim is often partial. And nothing about a refund application fixes the future: the declaration held by the payer is what stops the same excess recurring.
Does my Canadian bank need to know that I have moved abroad?
Yes, and telling it is in your interest rather than merely a formality. A payer working from a Canadian address on file has no reason to withhold at a non-resident rate at all, and the mismatch surfaces later as a correction covering several years rather than as a small adjustment. Address, country of residence and the declaration of treaty entitlement are three separate items, and updating one does not update the others. Go through each Canadian payer in turn — banks, brokers, transfer agents, a private company that pays you interest — and settle all three.
What is a "dual-status alien spouse", and why is my software asking?
The question comes from the filing-status screens, and it is asking whether your spouse was a non-resident or part-year resident for the year — because if they were, a joint return is not available by default. An election exists to treat a non-resident spouse as a resident for the whole year, which unlocks joint filing at the price of bringing their worldwide income into the US return and their accounts into its reporting. See a US person with a non-resident spouse.
Am I a US tax resident if I live overseas?
If you are a US citizen or a green card holder, yes — the United States taxes on status, not location, and living abroad changes the reliefs available rather than the obligation to file. If you are neither, residence turns on the substantial presence test, a weighted day count over three years, with exceptions for certain visa categories and a closer-connection claim available in some circumstances. The two paths lead to completely different returns. See filing US taxes from abroad.