Form 5472 + Pro Forma 1120 for Canadian-Owned LLCs

If you formed a single-member US LLC and have not heard about Form 5472, this post is for you. It is the federal information return most foreign-owned US LLCs miss in their first year. The minimum penalty for missing it is $25,000 per year, per form, and there is no first-time abatement specifically for this filing. Below is the reportable-transaction matrix, the Pro Forma 1120 mechanics, the CRA-side reporting that runs in parallel, and the cleanup path if you have already missed several years.

30-second triage: are you subject to Form 5472?

You file Form 5472 each year if all four are true:

You own a US LLC
You are a non-US person (Canadian resident, no green card, do not meet the substantial presence test)
The LLC is taxed as a disregarded entity (most single-member LLCs) or as a corporation
There was at least one reportable transaction during the year — including the initial capital contribution that funded the LLC

The fourth condition catches almost every newly-formed LLC, because funding the entity from your Canadian personal account is a reportable transaction. First-year filings are the norm, not the exception.

Multi-member LLCs taxed as partnerships generally do not file Form 5472. They file Form 1065 with K-1s and follow a different reporting regime. This post focuses on the SMLLC case, which is where most Canadian founders sit.

Pro Forma 1120 + Form 5472 — how the filing actually works

The combination is unusual. A foreign-owned single-member LLC is treated as a domestic corporation for reporting purposes only, even though it is pass-through for income tax. The IRS uses Form 1120 as a vehicle for the Form 5472 disclosure, even though the LLC files no actual corporate income tax.

Section	What goes there
Form 1120, Page 1	Entity name, EIN, mailing address. Income lines stay blank — this is a "Pro Forma" return
Form 1120, marked "Foreign-owned U.S. DE"	Write this phrase across the top of the form per IRS instructions
Form 5472, Part I	Reporting corporation info (your LLC)
Form 5472, Part II	The 25%+ foreign owner (you, the Canadian resident)
Form 5472, Part IV	Monetary transactions between LLC and foreign owner
Form 5472, Part V	Non-monetary or less-than-full-consideration transactions
Form 5472, Part VI	Additional information about transactions

The 1120 stays at zero income and zero tax due. The 5472 carries the actual reportable content.

Reportable transactions: 12 scenarios Canadian SMLLC owners hit

There is no dollar threshold under §6038A regulations. A single $10 transaction triggers the reporting requirement. Twelve scenarios cover most Canadian-owned LLC traffic:

Initial capital contribution — money you sent from your Canadian personal account to fund the LLC
Additional capital contributions later in the year
Distributions back to you — any cash that left the LLC for your personal accounts
Loans you made to the LLC — even short-term, even interest-free
LLC paying your personal expenses directly — credit cards, your share of joint subscriptions
Expense reimbursements to you for business costs you paid personally
Sale of property to/from the LLC — services, IP, equipment
Lease or rental of property between you and the LLC
Royalties paid by or to the LLC if IP ownership crosses the entity boundary
Interest on loans between you and the LLC
Commissions if you act as a sales agent for the LLC outside its normal employment structure
Premiums for insurance the LLC pays on your life or yours on the LLC

Each transaction type has a separate dollar field on Form 5472 Part IV. Aggregate, do not list line by line — the IRS expects totals by category, not transaction-by-transaction detail.

CRA-side reporting that runs in parallel

US Form 5472 is one of three reporting layers Canadian-resident LLC owners typically have. The CRA-side filings are independent obligations and missing them creates Canadian penalties separate from the IRS $25,000.

Filing	Trigger	Threshold	Penalty if missed
Form 5472 + Pro Forma 1120	Foreign-owned US SMLLC, any reportable transaction	No threshold ($1+ counts)	$25,000 per form per year
T1135 (Foreign Income Verification)	Specified foreign property over $100,000 CAD at any point in the year	$100,000 CAD aggregate	$25/day up to $2,500; gross negligence up to $24,000
T1134 (Controlled Foreign Affiliate)	10%+ ownership of non-resident corporation; LLCs default-classified as corp by CRA	10% ownership	$25/day up to $2,500 per affiliate

The Form 5472 deadline is April 15 for calendar-year LLCs (six-month extension via Form 7004). T1135 and T1134 follow the Canadian filing calendar. They do not coordinate, so plan for separate prep cycles.

Penalties and the cleanup path

The Form 5472 penalty structure since 2017 (Treasury Reg. §1.6038A-2):

$25,000 minimum for failure to file by the deadline
$25,000 per 30-day period continuing after IRS notice and demand (capped only by reasonable cause)
The penalty is per Form 5472 per year. Multiple missed years stack: three missed years = $75,000+ exposure
The $25,000 figure is inflation-adjusted slightly upward starting tax year 2024 ($26,500 in 2026 in some interpretations)

Two relief paths Canadian owners typically use:

First-Time Abatement (FTA). General IRS administrative relief that waives a single year of penalty if (a) the taxpayer has a clean three-year compliance history before the missed year and (b) all currently-due returns have been filed. Apply by writing the IRS or by calling after a penalty notice. FTA is granted sparingly for Form 5472 specifically, but it works in clean-history cases.

Reasonable Cause. Available when there was a substantial cause for the missed filing — illness, advisor error, reasonable reliance on a tax professional. Submit a written statement with supporting documentation alongside the late filings. Reasonable Cause is the more common relief path for Form 5472 because FTA is less reliable.

A typical cleanup sequence for a three-year-late Canadian SMLLC owner:

File the missed Pro Forma 1120s + Form 5472s for each year, marked with the late date
Wait for IRS penalty notice (usually 60-180 days after filing)
File FTA request for the first missed year if compliance history is clean
File Reasonable Cause statement for subsequent years with documentation
If the requests are denied, appeal to the IRS Office of Appeals before the 30-day deadline

Most clean-history Canadian owners get FTA + partial Reasonable Cause relief, reducing $75,000 exposure to $0-$25,000.

Worked example: Toronto founder, $100,000 capital, second-year distribution

Concrete numbers ground the framework.

Assumptions:

Toronto-based Canadian resident
2024: forms a Wyoming SMLLC, contributes $100,000 capital
2025: LLC earns $50,000 net profit, owner distributes $30,000 back to personal account
2026: continues operating, $20,000 in additional capital contributions

Year	Reportable transactions	Form 5472 Part IV entry
2024	$100,000 capital contribution	Line: Amounts borrowed by reporting corporation (or Distributions/Other Items depending on facts), $100,000
2025	$30,000 distribution to owner	Line: Distributions, $30,000
2026	$20,000 additional capital	Line: Amounts borrowed (or capital contribution category), $20,000

Each year, a Pro Forma 1120 + Form 5472 is filed by April 15 of the following year. Three years, three filings, three sets of $25,000 penalty exposure if missed.

Common pitfalls Canadian SMLLC owners hit

Treating "no business activity" as "no filing required." The capital contribution alone is reportable. First-year filings are mandatory for almost every newly-formed LLC.
Filing Form 1120 as a real corporate return. The Pro Forma 1120 has zero income and zero tax. It exists only to carry the Form 5472. Filing a normal 1120 with zero everything triggers automated processing that conflicts with the Pro Forma flag.
Missing the "Foreign-owned U.S. DE" notation. This text written across the top of Form 1120 signals the Pro Forma nature to IRS processing. Without it, the return can be misclassified.
Aggregating the wrong way on Part IV. Each reportable transaction category has its own line. Combining categories (e.g., capital contributions + loans) into one number triggers mismatches with later examination.
Forgetting Form 8822-B if the responsible party changes. When ownership transfers or the responsible party on the original SS-4 changes, Form 8822-B must be filed within 60 days. Missing this disconnects the IRS records from your current contact info.

What Auteur does

We flag Form 5472 obligations during LLC formation, add them to your annual compliance calendar, and coordinate with your cross-border accountant on the actual filing. If you formed an LLC two or three years ago, never filed, and just received a $25,000 penalty letter, we can audit the back-year exposure on a 30-minute call and route you to the right cross-border CPA for the cleanup.

Frequently asked questions

Does the $25,000 penalty really get assessed automatically?

Yes. IRS systems flag missing Form 5472 filings and generate notice letters. The penalty is automatic unless waived through FTA or Reasonable Cause. We have seen multiple cases where Canadian owners received the notice 12-18 months after the missed deadline.

My LLC had zero activity all year. Do I still need to file?

If there were no reportable transactions in the year — no capital flow either direction, no expense reimbursement, no loan, no distribution — then Form 5472 is not required for that specific year. But this is rare. Most LLCs have at least one reportable transaction even in dormant years (RA payment from owner, state fee paid by owner on behalf of LLC, etc.).

Can I e-file Form 5472?

Limited e-filing through certain professional preparers exists, but most Canadian-owned SMLLC filings are by mail or fax. The IRS address for Form 5472 Pro Forma 1120 is Internal Revenue Service, Ogden, UT 84201, with the "Foreign-owned U.S. DE" notation. The fax option is available through specific IRS instruction in some years.

What is the relationship between Form 5472 and T1135?

They are entirely separate reporting regimes. Form 5472 is the IRS information return for transactions between a foreign-owned US entity and its foreign owner. T1135 is the CRA disclosure of specified foreign property held by Canadian residents. The same LLC ownership can trigger both: file Form 5472 to the IRS and T1135 to the CRA. Missing one does not affect the other's penalty.