Canadian Owners of a U.S. LLC: IRS Filing Requirements (2026)
FILING GUIDES · CANADA
By Arik Rozen, CPA, MBA · Virginia License #025991 · Updated September 2026
SHORT ANSWER Canadian entrepreneurs with a U.S. LLC must file Form 5472 and a pro forma Form 1120 with the IRS every year. The U.S.-Canada tax treaty doesn't eliminate this requirement. Missing it costs $25,000. Here's exactly what's due and when.
IN THIS GUIDE
Why Canadian owners must file with the IRS
Exactly what to file: the two-document package
Deadlines and extensions
What information goes on Form 5472
How to submit: fax or certified mail
The $25,000 penalty
What about your Canadian tax obligations?
Frequently asked questions
Thousands of Canadian entrepreneurs own U.S. LLCs — formed in Delaware, Wyoming, or another U.S. state — to sell on Amazon, run SaaS businesses, work with U.S. clients, or access the U.S. banking system. Many assume that because the LLC is a pass-through entity with no U.S. income, there's nothing to file.
That assumption is wrong and expensive. The IRS requires a specific annual filing from every foreign-owned single-member LLC, regardless of income. Here is exactly what Canadian founders need to know.
Why Canadian Owners Must File with the IRS
A U.S. LLC owned entirely by a non-U.S. person is classified as a foreign-owned domestic disregarded entity under U.S. tax law. Despite being a "disregarded entity" for income tax purposes (meaning its income flows through to the owner), it has a separate annual information-reporting obligation under IRC Section 6038A.
This requirement applies regardless of:
Whether the LLC earned any income
Whether the LLC has a U.S. bank account
Whether you live in a country with a U.S. tax treaty (including Canada)
Whether you've been filing Canadian returns with the CRA
Important: Canada has a comprehensive tax treaty with the United States — but the U.S.-Canada treaty does not eliminate the Form 5472 filing obligation. The treaty covers income tax; Form 5472 is an information return. They are governed by different rules.
Exactly What to File: The Two-Document Package
This is where most Canadian founders go wrong. Form 5472 alone is not a complete filing. The IRS requires two documents submitted together:
1. Pro Forma Form 1120 (the transmittal return)
A U.S. corporation income tax return, completed in a limited "pro forma" format. For a foreign-owned disregarded LLC, only basic identifying information is completed. This form serves as the cover document that Form 5472 must be attached to. Without it, Form 5472 alone is not a valid submission.
2. Form 5472 (the information return)
Reports all "reportable transactions" between the LLC and its foreign owner during the tax year. This includes capital contributions, distributions, loans, expenses paid on behalf of the LLC, and any other financial flows between you and the entity — even if no money changed hands for goods or services.
What counts as a reportable transaction?
Any financial flow between you (the Canadian owner) and your U.S. LLC must be reported on Form 5472. Common examples for Canadian founders:
Money you transferred into the LLC (capital contributions)
Money the LLC paid back to you (distributions or loan repayments)
Personal expenses you paid on the LLC's behalf
Loans between you and the LLC in either direction
Services you provided to the LLC
If the LLC had no transactions at all during the year, you still file — but Part IV of Form 5472 is left blank and a note is added explaining the LLC was inactive.
Deadlines and Extensions
LLC Type | Original Deadline | Extended Deadline | Extension Form |
Single-member LLC (most Canadian founders) | April 15 | October 15 | Form 7004 |
Multi-member LLC | March 15 | September 15 | Form 7004 |
Extensions must be filed before the original deadline. An extension gives you more time to file — it does not extend the time to pay any tax owed (though for most Canadian-owned LLCs with no U.S.-source income, no tax payment is due).
What Information Goes on Form 5472
When you file, you will need the following information ready:
LLC details: legal name, U.S. address, Employer Identification Number (EIN)
Your details as the foreign owner: name, Canadian address, country of residence (Canada), taxpayer identification number (your SIN is not accepted — you need an ITIN or other U.S. TIN if you have one)
Transaction amounts: total amounts for each category of reportable transaction during the year
Monetary amounts in USD: all figures must be reported in U.S. dollars
No EIN yet? Your LLC must have a U.S. Employer Identification Number before you can file. If you don't have one, you'll need to apply using Form SS-4. This can be done by mail or fax; Canadian residents cannot call the IRS Business & Specialty Tax Line directly for EIN purposes. Form5472.online can assist with EIN registration as part of the filing process.
How to Submit: Fax or Certified Mail
There is no e-filing option for Form 5472 filed with a pro forma Form 1120. The IRS only accepts physical submission via two methods:
1. Option A: Fax
Fax your completed package (pro forma 1120 + Form 5472) to the IRS at 855-887-7737. Keep your fax confirmation as proof of submission. This is the fastest method and most commonly used by tax professionals handling these filings.
2. Option B: Certified Mail
Mail your package to:Internal Revenue Service1973 North Rulon White Blvd.Ogden, UT 84201Send via USPS certified mail with return receipt, or a trackable courier service. Keep your proof of mailing. Note that mailing from Canada adds transit time — account for this when planning around the deadline.
The $25,000 Penalty
Under IRC Section 6038A(d), failure to file Form 5472 — or filing it late, incomplete, or inaccurate — results in a $25,000 penalty per form, per tax year. If your LLC had multiple reportable transactions that required separate Form 5472 filings, each one carries its own $25,000 exposure.
The penalty is assessed automatically. There is no warning, no grace period, and no reminder from the IRS. The first notice you typically receive is a penalty assessment letter.
While it's possible to request penalty abatement by demonstrating reasonable cause, the IRS standard for abatement on information returns is strict. "I didn't know I had to file" is generally not accepted. The safest approach is to file correctly and on time.
The U.S.-Canada tax treaty does not reduce this penalty. Treaty provisions apply to income taxes, not to penalties assessed under the information-reporting rules of Section 6038A.
What About Your Canadian Tax Obligations?
Your U.S. LLC filing obligation to the IRS is entirely separate from what you report to the Canada Revenue Agency. Here is how they interact:
CRA reporting: As a Canadian tax resident, you must report your worldwide income — including any income earned through your U.S. LLC — on your Canadian T1 return. The LLC is a pass-through entity, so its income flows directly to you as the owner.
Foreign income reporting: If your U.S. LLC holds foreign assets or receives foreign income, you may have additional CRA disclosure requirements (T1135 Foreign Income Verification, for example).
No double taxation (generally): Under the U.S.-Canada tax treaty, income taxes paid to the U.S. can typically be credited against your Canadian tax liability. However, since most foreign-owned disregarded entity LLCs owe no U.S. income tax, the treaty credit is usually not relevant.
HST/GST: If you're conducting business through your U.S. LLC and selling into Canada, you may have GST/HST obligations under the CRA rules for non-resident suppliers. This is separate from both the IRS Form 5472 obligation and your personal T1 return.
The bottom line: your CRA filings do not satisfy your IRS obligations, and your IRS Form 5472 filing does not replace anything you owe the CRA. Both must be handled separately.
KEY TAKEAWAYS
Every Canadian-owned U.S. LLC must file Form 5472 + pro forma Form 1120 every year — even with zero income or zero transactions.
The filing is always two documents together. Form 5472 alone is not a complete submission.
The deadline is April 15 for single-member LLCs. An extension to October 15 is available via Form 7004.
The U.S.-Canada tax treaty does not eliminate this requirement. It applies to income taxes, not information returns.
Missing the filing triggers a $25,000 IRS penalty per form, per year — with no grace period.
Your CRA obligations are separate. Filing your Canadian return does not satisfy the IRS requirement.
Frequently Asked Questions
I'm Canadian and my U.S. LLC had no income last year. Do I still need to file Form 5472?
Yes. The filing requirement applies regardless of income. If you had any transactions between yourself and the LLC — a capital contribution, a distribution, paying an expense on the LLC's behalf — those must be reported. Even if there were truly zero transactions, the pro forma 1120 still needs to be filed to confirm that status.
Does the U.S.-Canada tax treaty mean I don't have to file?
No. The treaty covers income taxes — it doesn't eliminate the Form 5472 information-reporting requirement. Canada has one of the most comprehensive tax treaties with the U.S., but it has no effect on your obligation under IRC Section 6038A. You must still file.
Can I e-file Form 5472?
No. The IRS does not accept e-filing for Form 5472 filed with a pro forma 1120. You must submit by fax (855-887-7737) or certified mail to the IRS in Ogden, Utah. If you're mailing from Canada, allow extra time for international transit before the April 15 deadline.
My Canadian accountant said they can handle this. Is that accurate?
Only if your accountant is also licensed to practice U.S. tax law. Canadian CPAs (CPA Canada designation) are not automatically authorized to prepare U.S. federal tax returns. Form 5472 is a U.S. IRS filing that requires a U.S.-licensed CPA, enrolled agent, or tax attorney. Confirm your accountant's U.S. credentials before proceeding.
What is a pro forma Form 1120 and why is it needed?
A pro forma Form 1120 is a U.S. corporation tax return completed in a simplified format — just the identifying information, not a full corporate return. It serves as the required transmittal document that Form 5472 must be physically attached to when submitted to the IRS. Without it, the Form 5472 alone is not considered a valid filing and the penalty still applies.
How do I get an EIN for my U.S. LLC if I'm in Canada?
Canadian residents can apply for an EIN using Form SS-4 by fax or by mail. The IRS international line (267-941-1099) can also issue EINs to non-residents, but wait times are long. Many Canadian founders use a U.S.-based tax service to obtain the EIN as part of the overall filing process.
File Your Form 5472 — Handled by a U.S.-Licensed CPA
Both documents included · April 15 deadline · $399 flat fee · Canadian founders served every year
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