Controlled foreign corporation rules — international tax: is this a do-it-yourself job?
Some of it, yes — and we will say so on the call if that is the honest answer. The parts that are worth paying for are the ones where a missed election, a missed deadline or an unverified threshold costs more than the fee: the Canadian regime attributes passive income of a controlled foreign affiliate; the US regime pulls in defined categories plus a residual inclusion for active income above a routine return.
What if I have already filed and got it wrong?
That is a common starting point. We re-derive the position, identify whether an amendment or a disclosure route is the right vehicle, and tell you which one preserves the relief that is still available. The order matters more than the speed.
How long will it take?
It depends on the documents rather than on us. Once the pack is complete most filings turn around inside a fortnight; anything that needs a certificate from a tax authority runs on that authority's timetable, which we tell you at the start rather than at the end.
Do I pay Canadian tax on profits my foreign company has not paid out?
You can. The Canadian regime attributes certain income of a controlled foreign affiliate to its Canadian shareholder as it arises, without waiting for a distribution. What is caught is essentially passive income — the return on investments, most interest, and income from property rather than from an active business carried on abroad. The practical consequence is a Canadian tax liability in a year in which no money reached you, so the cash to pay it has to come from somewhere. Shareholders usually discover this when the foreign company has been accumulating investment income quietly for several years.
Can the same foreign profit be taxed by both Canada and the United States?
It can, and it can also fall through both. The two regimes attribute undistributed foreign company income to the shareholder using different definitions of what is caught and different tests of control, so the same profit may be picked up twice, once, or not at all. For someone inside both systems the interaction is the entire computation: which regime bites first, on what measure of income, and whether the tax paid under one can be credited against the other. That last question is the one that decides whether the outcome is merely complicated or genuinely expensive.
Does an active business abroad escape the attribution rules?
Not automatically, and this is where the two systems separate. The Canadian regime is aimed at passive income, so genuine active business profit of a foreign affiliate is broadly outside it. The US regime reaches further: alongside its defined categories of caught income, it carries a residual inclusion that picks up active income above a routine return on the foreign company's assets. So a profitable overseas operating business can sit comfortably outside one regime and squarely inside the other. Testing an entity against only the more familiar of the two systems is how people conclude, incorrectly, that nothing applies.
I am a US citizen living in Canada and own a company abroad — what applies?
Both regimes, potentially at once, which is the hardest version of this. You are within the Canadian rules as a Canadian resident shareholder and within the US rules as a citizen, and neither system stands down because the other applies. The work is to compute the inclusion under each set of definitions, establish the order in which the two charges arise, and then determine what credit is available for the foreign tax so that the same profit is not taxed twice over. That computation is the engagement; the filings follow from it rather than the other way round.
Does control still matter if I only own part of the foreign company?
Yes, and a minority holding is not the safe harbour it appears to be. Each regime defines control in its own way, and both look beyond the shares registered in your own name to holdings by related and associated persons and, in places, to arrangements that give influence without ownership. A stake that looks like a comfortable minority on the share register can be aggregated into control once the related holdings are counted. The share register is the starting point for that analysis, not the answer to it, and family and group holdings are where the surprises usually sit.
Will leaving profits in the foreign company defer the tax?
That is the assumption these regimes exist to defeat. Both Canada and the United States tax defined categories of foreign company income to the shareholder before it is distributed, precisely so that retaining profit offshore does not postpone the charge. Where deferral still works it is because of what the income is and where it is earned, not because it has been left undistributed. Withholding dividends therefore changes your cash position without changing the tax, and it can make matters worse, because the liability arises in a year when nothing came out to pay it with.
How do the controlled foreign corporation rules differ between the two systems?
Both systems attack the same thing — passive income parked in a foreign company — and both do it by taxing the shareholder before any money comes home, but they define the trigger differently. Canada's rules attribute the foreign affiliate's passive income to the Canadian shareholder as it arises, with a mechanism to relieve foreign tax already paid on it. The US rules reach the same result through their own inclusion regimes, on their own definitions of control and of the income caught. Structures that are clean under one set of international tax rules are frequently caught by the other, so both are tested against the same facts before anything is filed.
Which business structure has double taxation?
The corporation — specifically a US C corporation, where profit is taxed to the company and the dividend again to the shareholder. Sole proprietorships, partnerships and LLCs treated as flow-throughs are taxed once, in the owners' hands. Across borders that tidy answer breaks: an entity treated as a flow-through in one country can be opaque in the other, which produces a mismatch neither system planned for. See LLC against corporation for Canadians.
