Is there a penalty for filing Form NR74 late?
The request has no filing deadline, so there is no late penalty on the form itself. It asks the CRA for a view of when your Canadian residency began; you can ask at any time, or never. The penalty risk lives on the arrival-year return, which does have a due date. If you have arrived, have a filing obligation for that year, and have not met it, the determination question is a side issue next to the return that is outstanding.
I have been in Canada two years and never filed — what happens?
Each outstanding return carries the ordinary late-filing penalty. For the 2025 tax year that is five per cent of the balance owing for the year, plus one per cent of that balance for each full month the return is late, up to twelve months, with interest compounding daily on what is unpaid. On a first Canadian year there is a second cost that is not a penalty: the credits for the arrival year are prorated by your start date, and until the return is in with that date on it, nothing on the file supports them.
Can asking for a determination now make my late returns worse?
It can move the start date, and the start date decides which years were yours to file. A determination that puts residency earlier than you assumed turns a year you treated as outside the Canadian system into an outstanding return, with the penalty running from that year's due date. It can also work in your favour. Either way the useful order is to establish what the facts support, file on that basis, and request the determination afterwards if something still turns on having it in writing.
Does the late penalty double the second time you file late?
Repetition by itself is not the trigger, though that version of the rule is widely repeated. The elevated rate requires that the CRA issued a demand to file and charged a late-filing penalty in any of the three preceding tax years. Where it applies, the 2025 figures are ten per cent of the balance owing plus two per cent for each full month, to a maximum of twenty months. Since twelve months does not become twenty-four, a notice that simply doubles the ordinary amounts deserves a look at the correspondence history behind it.
Will the penalty keep increasing the longer I leave it?
The penalty stops. Its monthly part runs only to the cap and it is never charged on itself, so beyond that point that component is settled. Interest does not stop: it compounds daily on the outstanding amount, the penalty included, and on an arrival year left for several years it is usually the part that has grown. For a newcomer this sometimes matters less than it sounds, because a first Canadian year with prorated credits and part-year income can turn out to have no balance for either to attach to.
Can I still claim first-year credits if my arrival return is late?
The proration follows your residency period, not the date you file, so lateness does not change the amount the arrival year supports. What it changes is when any of it is allowed, and how much explaining the claim needs. A return arriving years late with a start date nobody has seen before will be assessed against whatever the CRA already assumes about your residency, so the date and the evidence for it should go in with the return rather than after the assessment.
What is Part XIII withholding?
Canada's flat withholding on certain payments to non-residents — dividends, interest to related parties, rents, royalties, pension and annuity payments, management fees. The payer withholds and remits, and is liable if they do not, which is why they insist on documentation. A treaty can reduce the rate, but only where the recipient has given the payer the declaration establishing entitlement before payment. Where too much was withheld, a refund claim is the route, with its own time limit. See Part XIII withholding review.
Which kind of investor income is most exposed to double taxation?
Dividends from a foreign corporation. They have already borne corporate tax, the source country withholds on payment, and your residence country taxes the receipt — three layers, only two of which a credit can reach. Interest and royalties carry the same source withholding without the corporate layer. This is why the withholding article and the paperwork that reduces it matter more for portfolio income than for salary. See dividends, interest and royalties articles.