Do I Have to File Form 5471 for My Canadian Corporation?

Generally yes, if you’re a US citizen or US resident and you either control your Canadian corporation (more than 50% of vote or value) or own 10% or more of it while US shareholders together own more than 50%. Most owner-managers who are US citizens fall in both groups. The form goes with your US return every year, and missing it costs $10,000 per corporation per year. For the full rules, schedules and penalties, see the Form 5471 filing requirements guide.

Do I have to file Form 5471 for my Canadian company?

It depends on how much you own and who owns the rest. The Form 5471 instructions (Rev. December 2025) put you in Category 4 if you had control, more than 50% of vote or value at any time in your tax year, and in Category 5 if you’re a 10% US shareholder of a controlled foreign corporation (CFC). Category 3 covers the year you cross 10% or become a US person.

Your situation	Is the company a CFC?	Your category	Form 5471?
US citizen in Canada owning 100% of a CCPC	Yes	4 and 5a (check only box 4)	Yes, every year, the full form
Two unrelated US citizens, 30% each; the rest owned by non-US persons	Yes, US shareholders hold 60%	5a for each; neither has control	Yes, every year
US citizen owning 30%; the other 70% owned by Canadians who aren’t US persons	No, US shareholders hold only 30%	3 in the year you reached 10%; no 4 or 5	Only in that crossing year, unless your ownership changes
US citizen owning 5%	Depends on the others, but you aren’t a US shareholder	None of 3, 4 or 5 on this stake	Generally no
Canadian who becomes a US resident while owning 100%	Yes, for any year in which US shareholders own over 50% on any day	3 in the move year, plus 4 and 5a	Yes, starting with the move year
US citizen whose nonresident-alien spouse owns 100%; you own nothing	Not through your spouse’s shares	Possibly 4 by attribution, but excused because it comes only from a nonresident alien	Generally no

The CFC column follows IRC 957(a): more than 50% of vote or value owned by US shareholders “on any day during the taxable year.” A US shareholder under IRC 951(b) holds 10% or more, so a 5% owner doesn’t count toward that 50% and doesn’t file as one. A minority stake that isn’t in a CFC can still raise a PFIC question if the company is mostly passive; the PFIC hub explains that test.

Who counts as a US person for Form 5471?

For most categories, a US person is a US citizen or resident, a domestic partnership or corporation, or a US estate or trust. Category 4 adds a nonresident alien with an election in effect under section 6013(g) or (h), so choosing to file jointly with a US spouse in your first US year can put Form 5471 on that return. Ownership by family members can count too, with limits.

The family rule cuts both ways. Constructive ownership under section 958(b) can make you a US shareholder through a relative’s shares, but IRC 958(b)(1) says “stock owned by a nonresident alien individual … shall not be considered as owned by a citizen or by a resident alien individual.” On top of that, the instructions excuse a Category 4 or 5 filer who owns no direct or indirect interest and is caught “solely because of constructive ownership from a nonresident alien.” If your spouse is a US citizen or resident, attribution can still apply, and the first-year election guide weighs the 6013(g) and (h) choice.

What happens if I fail to file Form 5471?

Three things. A $10,000 penalty for each annual accounting period of each corporation under IRC 6038(b), whether or not you owe tax, with up to $50,000 more if the failure runs past 90 days after an IRS notice. A 10% cut in foreign taxes available for credit under sections 901 and 960. And an assessment period that stays open for that year until 3 years after the form is filed.

That last point comes from IRC 6501(c)(8): for information required under sections 6038 and 6046, the time to assess “shall not expire before the date which is 3 years after the date on which the Secretary is furnished the information.” If the failure was due to reasonable cause and not willful neglect, the open period applies “only to the item or items related to such failure.” The Form 5471 head guide has the continuation math and the section 6679 penalty for Categories 2 and 3.

How do I catch up on late Form 5471s?

Pick the route by whether your tax was right. If every year’s income was reported and only the forms are missing, the IRS’s delinquent international information return submission procedures apply. If income was also underreported and the failure was non-willful, the streamlined procedures bring the late 5471s in with the back returns.

Route	Fits when	What goes in
Delinquent information returns	Only the forms are missing; you’re not under civil examination or criminal investigation, and the IRS hasn’t contacted you about the forms	Each late 5471 attached to an amended return, filed through normal channels, with a reasonable cause statement on each form where you assert it
Streamlined (foreign version, for those living outside the US)	Income was also underreported, the failure was non-willful, and no civil examination has started for any year	Three years of delinquent or amended returns with all information returns, 5471s included, six years of FBARs, the non-willful certification, and full payment of tax and interest

Neither route promises no penalty. The delinquent procedures page says “penalties may be assessed in accordance with existing procedures,” and that during processing “penalties may be assessed without considering the attached reasonable cause statement,” so you may need to answer IRS letters. The IRS defines non-willful conduct as “due to negligence, inadvertence, or mistake or conduct that is the result of a good faith misunderstanding of the requirements of the law.” The foreign streamlined page lists Form 5471 among the information returns to include, and the never-filed catch-up guide walks through that route.

The reasonable cause statement is where the work is. Reg. 1.6038-2(k)(3) asks for “an affirmative showing of all facts alleged as reasonable cause” in a written statement made under penalties of perjury, so it should say what actually happened, year by year.

Is Form 5471 the same as Form 5472?

No, they run in opposite directions. Form 5471 is filed by a US person who owns part of a foreign corporation, such as your Canadian company. Form 5472 is filed by a US corporation that’s at least 25% foreign-owned, reporting transactions with related parties under IRC 6038A, and its penalty is $25,000 per year. A US person with a Canadian company is in 5471 territory; a Canadian with a US company is in 5472 territory.

	Form 5471	Form 5472
Filed by	A US person owning part of a foreign corporation	A US corporation at least 25% foreign-owned
Base penalty	$10,000 per year, per corporation	$25,000 per year
Statute	IRC 6038 and 6046	IRC 6038A

A US LLC doesn’t escape this. The Form 5472 instructions say a foreign-owned US disregarded entity “will now be required to file a pro forma Form 1120, U.S. Corporation Income Tax Return, with Form 5472 attached.” The 5472 side, for a Canadian who owns a US company, is covered in owning a US business from Canada.

Related guides

• What Form 5471 costs to prepare, with published firm prices
• Form 5471 and 5472 penalty abatement, if the IRS has already assessed
• Should you wind up the corporation before moving?, if you’re keeping it mostly out of habit

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.