Who has to file the transfer-pricing agreement forms T1145 and T1146?
Canadian members of multinational groups that are making or receiving a transfer-pricing adjustment. These are not a general transfer-pricing filing and they are not required simply because a group has intercompany transactions. They belong to the situation where an adjustment is actually being allocated between group members. If the Canadian entity's profit is being moved, up or down, to reflect an arm's length result, the question of how the counterparty treats the same amount arises immediately, and these agreements are what records it. Establish which entity is adjusting and which is absorbing before deciding who signs.
Why does the Canadian company need an agreement with the foreign group member?
Because an adjustment made on one side only taxes the same profit twice. If the Canadian entity's income is increased and the counterparty's country does not make the corresponding reduction, the group pays tax twice on one amount of profit. The agreement is the mechanism that makes the two positions consistent. It is the difference between an adjustment that is a documentation exercise and one that is a permanent cost to the group. That is also why the agreements are treated as part of the adjustment itself rather than as paperwork that can follow along behind it.
What if only Canada makes the adjustment and the other country does not?
Then the same profit sits in two tax bases and the group bears tax on it twice. The agreements exist to prevent exactly that, by tying the Canadian treatment to the counterparty's. Where the other country's authority has not acted, the practical work is to establish what that entity has reported in its own return, whether it can still be amended, and on what timetable. The foreign limitation period is often the binding constraint rather than anything on the Canadian side. Decide this before the Canadian adjustment is finalised. Unwinding a one-sided position is far harder than aligning both at the outset.
Is there a time limit on filing the transfer-pricing agreement forms?
Yes. These agreements are time-limited, which is the single most important operational fact about them, and the window runs from the adjustment rather than from the group's general filing calendar. Fix the date as soon as the adjustment is identified and work backwards from it. In practice the delay is rarely the form itself. It is agreeing the figures internally, obtaining a signature from a group member in another country and time zone, and getting the counterparty's adviser to confirm the matching treatment. Diarise the deadline when the adjustment first appears, not when the return is being assembled.
Does a small intercompany adjustment still need these agreement forms?
Size is not the test. What matters is whether an adjustment is being made or received by a Canadian member of the group, because the risk the agreements address, the same profit taxed twice, exists at any amount. A small adjustment left one-sided is also the one nobody notices, and it tends to recur year after year until the cumulative position is awkward to explain to either authority. The work involved in documenting a modest adjustment properly is modest. The work in reconstructing several years of undocumented ones is not.
We made the adjustment ourselves rather than after an audit. Does that change anything?
It changes the timetable and the leverage, not the requirement. A self-initiated adjustment lets the group align both sides at once, using the same figures and the same supporting analysis, which is much the easiest version of this exercise. An adjustment imposed after an audit starts with one side already fixed and the other country still to be persuaded. Either way the Canadian member is making or receiving an adjustment, and the allocation between group members has to be agreed, documented and lodged within the time allowed.
Which countries have a tax treaty with the United States?
Around sixty, including Canada, the United Kingdom, India, Australia and most of western Europe — but the list matters less than the terms, because each treaty caps rates and allocates income differently. Two countries with treaties can produce opposite answers on the same pension or the same royalty. What decides your position is the specific article covering your income type. See our country guides.
Is double taxation illegal?
It is legal. Two countries can each have a valid claim on the same income — one because the income arose there, the other because you live there — and nothing prohibits both from exercising it. What exists instead is relief: tax treaties allocate the claim, and domestic law gives a credit for foreign tax paid. The relief is not automatic, though. It is claimed on a return, and unclaimed relief is simply lost. See how double taxation is relieved.
