Precision
Melville, New York · Accounting organized by industry ☎ (631) 349-1661 · [email protected]

Pro Forma Form 1120 for a Foreign-Owned LLC: How the Form 5472 Filing Actually Works

Quick answer: A foreign-owned U.S. single-member LLC has no income tax return to file, but it must still file a pro forma Form 1120 with Form 5472 attached. Only the name, address and two items on page 1 of the 1120 are completed. It cannot be e-filed — it goes by fax or mail to a dedicated IRS address that is different from the normal Form 1120 address.

This is the part of the process that produces the most accidental failures, because almost everything about it is an exception to how business returns normally work. A filing that is complete, accurate and timely can still be treated as never made if it went to the wrong address.

For who has to file in the first place, see Form 5472 filing requirements and the $25,000 penalty. For what goes on the form itself, see the part-by-part instructions.

Why a 1120 at all?

Because Form 5472 is an attachment, not a standalone return. It has to ride on something.

A foreign-owned U.S. disregarded entity has no income tax filing requirement of its own — it is disregarded. The regulations solved the mechanical problem by requiring a pro forma Form 1120 purely as a carrier for the 5472.

This is not a corporate return. You are not electing corporate treatment, not reporting income, and not computing tax. The LLC’s tax classification does not change.

What you actually complete on the 1120

Per the IRS instructions, the only information required is:

  • The name and address of the foreign-owned U.S. disregarded entity
  • Items B and E on the first page

That is the whole thing. Every income, deduction, tax and payment line stays blank. Schedules L, M-1 and M-2 stay blank.

Then write “Foreign-owned U.S. DE” across the top of the Form 1120. This is how the IRS unit routes and identifies the filing. It is a required marking, not a formality.

Filers who complete the full 1120 out of caution create a different problem: a return that looks like a corporate income tax return from an entity that is not a corporation.

A single-member foreign-owned LLC with no income still has to file

That surprises most owners. The pro forma 1120 exists only to carry Form 5472, and the $25,000 penalty applies whether or not the entity earned a dollar. Plenty of dormant LLCs sit accruing exposure because someone reasonably assumed no income meant no filing.

We file these and keep the transaction records that support them. Call 631-349-1661 or send us the details and we will give you a straight answer.

You cannot e-file this

The IRS states it plainly: a foreign-owned U.S. disregarded entity cannot file Form 5472 electronically.

Two acceptable methods:

  • Fax at 300 DPI or higher to 855-887-7737
  • Mail to: Internal Revenue Service, 1973 Rulon White Blvd, M/S 6112, Attn: PIN Unit, Ogden, UT 84201

Do not use the mailing addresses in the regular Form 1120 instructions. The IRS repeats this warning twice in the instructions, which tells you how often it happens.

Practical consequence: consumer and small-business tax software will not produce this filing. If your software “cannot find” the form, that is not a software problem — it is the correct behavior.

Keep proof. A fax confirmation page, or certified mail with return receipt. If the IRS later asserts non-filing, that proof is the entire defense.

What tax year do you use?

The disregarded entity uses the same tax year as its owner for U.S. tax filing purposes — or the calendar year if the owner has none.

Most foreign individual owners have no U.S. filing requirement and therefore no U.S. tax year, which lands them on the calendar year by default. Owners who assume their home-country fiscal year controls tend to file on the wrong cycle.

Deadlines and extensions

The filing is due by the due date, including extensions, of that pro forma Form 1120 — for a calendar-year entity, the standard corporate due date.

An extension is available, with its own quirks:

  • File Form 7004 by the regular due date of the return
  • Enter the Form 1120 code on Part I, line 1
  • Write “Foreign-owned U.S. DE” across the top of Form 7004
  • Fax or mail it to the same dedicated address — not the regular Form 7004 address

Note the ordering trap: the extension must reach that dedicated address by the unextended due date. An extension request filed correctly but sent to the standard address may not protect you.

The EIN problem — start early

The entity needs an EIN to file. For a foreign-owned LLC this is often the longest part of the process, and it is where deadlines get missed.

The online EIN application generally requires a responsible party with a U.S. taxpayer identification number. A foreign owner without an SSN or ITIN typically cannot use it and must apply through the alternative channels available to international applicants, which take substantially longer.

The practical planning point: the EIN timeline, not the form, drives your calendar. If you are approaching a deadline without an EIN, that constraint needs addressing first — and an extension may be the immediate priority.

A checklist

  1. Confirm the entity is a foreign-owned U.S. disregarded entity and had at least one reportable transaction.
  2. Obtain the EIN. Start early.
  3. Identify every related party under the attribution rules and prepare one Form 5472 per related party.
  4. Prepare the pro forma Form 1120 — name, address, items B and E only.
  5. Write “Foreign-owned U.S. DE” across the top.
  6. Attach every Form 5472 plus any required statements and the exchange rate schedule.
  7. Fax or mail to the dedicated address. Never the standard 1120 address.
  8. Retain proof of transmission and the supporting records.

Frequently asked questions

Does filing a pro forma 1120 make my LLC a corporation?

No. It remains disregarded. The 1120 is a carrier for the Form 5472 and does not change your entity classification or create a corporate tax liability.

Do I owe tax with this filing?

Not from this filing itself — it reports no income and computes no tax. Whether you owe U.S. income tax is a separate question that turns on whether you have income effectively connected with a U.S. trade or business.

My LLC had no activity. Do I still file?

If there were no reportable transactions of the listed types, no filing is required. But funding the LLC, paying its costs, or taking money out are themselves reportable transactions — so “no activity” is a conclusion to verify, not assume.

Can my regular accountant e-file it with my other returns?

Not for a disregarded entity. The IRS requires fax or mail to the dedicated address. Other reporting corporations attach Form 5472 to an income tax return that may be filed electronically.

What if I sent it to the wrong address last year?

Have it reviewed before doing anything else. Whether the filing was effective, and how to correct it, depends on the facts — and the response to a mis-sent return is different from the response to a return never filed.

Get the mechanics right

This filing punishes procedural error as harshly as substantive error. Wrong address, missing marking, no EIN in time — each produces the same outcome as not filing.

We handle Form 5472 filings for foreign-owned U.S. entities nationwide, including EIN applications and prior-year reviews. Schedule a consultation.

General information current as of publication, not tax advice. Addresses, fax numbers and deadlines change — confirm against the current IRS instructions before filing.

If you own a U.S. entity as a foreign person, the filing is downstream of the bookkeeping. See how we structure the books to support it on our foreign-owned U.S. business accounting page.

Talk to an accountant who works in your industry

Precision Accounting & Consulting works with contractors, law firms, medical practices and property owners across the country. If something on this page raised a question about your own books, send it over and we will give you a straight answer.

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