Is a US LLC a tax trap for Canadians, and how do I fix it?

Usually yes, because the two countries disagree about what your LLC is. The IRS ignores it and taxes you personally as the profit is earned. The CRA calls it a corporation and taxes you again when the money comes out, and the US tax you paid mostly can’t be credited. The repairs: a Form 8832 election, a C corporation, a Canadian company on top, or winding it up. Pick one before the next distribution.

Why does Canada treat my US LLC as a corporation when the US treats it as a flow-through?

Because the CRA ran its own classification test and landed on “corporation.” The IRS treats a single-member LLC as “an entity disregarded as separate from its owner, unless it files Form 8832 and elects to be treated as a corporation,” and a multi-member LLC as a partnership. Same company, two labels, and the label decides who the taxpayer is.

“Using the new approach, we have considered the characteristics of … US LLCs … and we have concluded that these entities are corporations for Canadian tax purposes.” Income Tax Technical News No. 38, archived, so it’s the CRA’s stated position rather than fresh guidance.

Because the LLC is disregarded, you’re the one carrying on the US business, and the profit is effectively connected income, US business income taxed at graduated rates on your 1040-NR. Canada sees a foreign corporation earning it and you earning nothing.

This page follows the single-member case. With two or more members the US default is a partnership, and the partnership itself “shall pay a withholding tax” on US business income allocable to a foreign partner. It also assumes you stay a Canadian resident; if you’re moving to the US instead, the questions change, and if what you own is a Canadian corporation rather than a US LLC, what happens to it on the move is its own guide.

How does the LLC mismatch actually create double tax?

The US taxes you in year one and Canada taxes you when the cash comes out. By then the year-one US tax has usually evaporated. Canada’s foreign tax credit under subsection 126(1) runs on “non-business-income tax paid by the taxpayer for the year,” and it’s capped by a ratio. The more of your income that comes from the US, the more of your Canadian tax the credit can wipe out. In year one Canada sees no US income in your hands, so unless you have other US-source income the cap is nil.

What happens next	The authority
The cap has an empty top half in year one	Subsection 126(1) limits the credit by the proportion your income “from sources in that country” bears to your income overall
That year-one US tax dies where it sits, with nothing carried forward	Folio S5-F2-C1: any part not claimed for the year “cannot be carried over and claimed as a foreign tax credit for another year”
It’s the wrong kind of foreign tax for the better relief	The folio’s S corporation example, where US tax on the entity’s business income is sorted as non-business tax “because the business was not carried on by the person who paid the tax”
The money is a foreign dividend when it finally comes out	Subsection 90(1) picks it up as a dividend on a share of a non-resident corporation
You get no dividend tax credit on it	The credit is built off a gross-up reaching only dividends “received by the taxpayer… from corporations resident in Canada”
There’s no new US tax to credit against it either	The LLC is “disregarded as an entity separate from its owner” on the US side, so no separate company has paid you anything
The usual fallback deduction fails the same way	Subsection 20(12) deducts foreign tax only in computing income “from a business or property for the year” and only tax “paid by the taxpayer for the year… in respect of that income.” In year one there’s no such income for it to be in respect of

What if my US LLC has no US customers or US office?

With no US business activity there’s generally no US tax to strand, so nothing is lost until the money comes out. Canada still calls the LLC a corporation, so the payout is still a foreign dividend and the filings below still apply.

Your LLC	What actually bites
A US office or people, customers billed from there	Everything above: US tax in year one, no credit for it, Canadian tax again on the payout
Software or services sold from Canada, no US presence	Generally no US income tax at all. Canada’s corporate treatment and the filings are your whole problem
Holding US investments rather than operating	US tax withheld at source on the income, and Article IV(7) can deny the treaty rates that would otherwise cut it

Does the Canada-US treaty fix it, and what does Article IV(6) actually do?

No. Article IV(6) only helps where the country you live in treats the entity as transparent, and Canada doesn’t. When you’re the Canadian resident claiming it, “the first-mentioned State” is Canada, and Canada treats your LLC as a corporation. Paragraph (b) is the condition that fails on the text.

“by reason of the entity being treated as fiscally transparent under the laws of the first-mentioned State, the treatment of the amount… is the same as its treatment would be if that amount had been derived directly by that person”

The CRA’s illustration has a US member taking a Canadian dividend through an LLC, where “the dividend paid to the LLC would be subject to the reduced rate of 15%.” Article IV(7) denies benefits rather than granting them, and its first limb can catch a Canadian-resident member on US-source income the LLC earns.

What are my options to fix a US LLC, and what does each cost?

Six paths: elect corporate treatment on Form 8832, convert to a US C corporation, put a Canadian corporation on top, use a US partnership or LP, wind the LLC up, or keep it and absorb the leakage. None recovers a credit you’ve lost, so the question is which costs least.

Option	When it’s right	Cost and consequence	What it doesn’t fix
Form 8832 election, LLC taxed as a corporation	Keeping the business, want the two systems lined up	Deemed incorporation, a US corporate return every year, a 60-month lock on electing again, and the same two US layers as the row below	Earlier years already taxed through the mismatch
Convert to a US C corporation	Real US operations, profit staying in the business	$60,500 of total tax per $100,000 of profit on the example’s assumptions, plus conversion mechanics	Stranded credits; the layer is permanent
Canadian corporation on top	Profit is meant to sit in a Canadian structure	Two sets of corporate compliance, so what cross-border filing actually costs doubles; moving a live business in has its own tax cost	US tax where the permanent establishment is
US partnership or LP instead	Only after someone reads that state’s statute against the CRA’s test	Depends on the statute and the entity’s features; the CRA put entities formed under the Delaware partnership statutes on the partnership side of the same publication that made LLCs corporations	Nothing reliably, until classification is settled for that entity
Wind up the LLC	Dormant, or US activity too small to carry a structure	Dissolution filings, a final US return, reporting duties until it’s closed	Earlier years and US tax already triggered
Keep it, manage the leakage	Short runway, imminent sale, numbers too small to restructure	$60,000 of total tax per $100,000 on the same assumptions	The structure, which stays where it is

Neither number that decides this is on the page: your effective US rate, and how soon you need the cash. What changes if you leave Canada moves both.

Should I open a US LLC at all if I’m staying in Canada?

Usually not, if it’ll earn US business profit while you’re still a Canadian resident. Forming a US corporation at the outset costs less than unwinding an LLC later, and nothing’s stranded yet.

How do the check-the-box timing rules work, and can I fix an earlier year?

Usually you can’t reach back far enough to matter. An eligible entity uses Form 8832 to elect its classification, but the effective date “can not be more than 75 days prior to the date on which the election is filed,” and no more than 12 months forward. There’s also late-election relief with its own conditions, open only where “Three years and 75 days from the requested effective date of the eligible entity’s classification election have not passed.”

“the entity cannot change its classification by election again during the sixty months succeeding the effective date of the election”

An exception exists where more than 50 percent of the interests end up with people who owned none of it before, but it isn’t yours as of right: “the Commissioner may permit” it, by private letter ruling. A first election on the day an entity is formed isn’t a change, so it isn’t caught.

What do I still have to file while the LLC exists?

Returns on both sides. Alongside your 1040-NR the LLC has its own duty. A foreign-owned US disregarded entity is “classified as a corporation for the limited purposes of the requirements under section 6038A…” and $25,000 is assessed on a reporting corporation that fails to file Form 5472 when due. On the Canadian side the expected form isn’t the one that applies, because specified foreign property carves out foreign affiliate shares.

“does not include … (k) a share of the capital stock or indebtedness of a non-resident corporation that is a foreign affiliate of the person or partnership for the purpose of section 233.4”

A foreign affiliate is a foreign corporation you own enough of: 1% yourself, and 10% counting shares held by people related to you. Clear both and your interest leaves the T1135, and the T1134 applies instead. It’s due within 10 months of your year end, has no dollar threshold, and carries administrative relief for a dormant affiliate on conditions the form’s instructions set. If the LLC holds investments rather than running a business, a different and generally worse set of rules applies before a dollar is distributed.

What should I do next about my US LLC?

Work out which year the mismatch first bit, so you know whether you’re fixing a live structure or cleaning up behind one. Then price the leak: about $10,000 per $100,000 of profit on the example’s assumptions, every year profit cycles through, and the filings sit on top either way. That’s why both sides of this need one set of eyes.

Not ready to move on it? The monthly note covers what changes on this side of the border.

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