How to File Form 5472: Step-by-Step Guide for Foreign LLC Owners

Filing Form 5472 is not a tax computation — it is a disclosure. A foreign-owned single-member LLC reports every transaction with its foreign owner under Internal Revenue Code section 6038A, attaches that report to a shell corporate return, and sends the package to the IRS in Austin, Texas. The work is mechanical, but the rules are unforgiving: a single missing form carries a $25,000penalty, so each of the seven steps matters.

The requirement applies to foreign-owned disregarded entities for tax years beginning on or after January 1, 2017, under final regulations in Treasury Decision 9796. Below is the full sequence, followed by a detailed walkthrough of each step.

The whole package for a typical single-owner LLC is two documents: one pro forma Form 1120 and one Form 5472 stapled behind it. There are no schedules, no payment, and no e-file.

Both Form 5472 and the pro forma Form 1120 require the LLC's Employer Identification Number, so this is the mandatory first step. US citizens and residents can get an EIN instantly online, but the IRS online tool requires an SSN or ITIN, which most foreign founders do not have. That means the paper route.

Filing Form SS-4 as a non-resident

Complete Form SS-4 for the LLC. On line 7b (the responsible party's SSN/ITIN/EIN), a foreign owner with no US tax ID writes “Foreign.” List the LLC's legal name, US mailing address, and the foreign owner as the responsible party. Then send it one of two ways.

Do not let an EIN delay derail your deadline. Apply for the EIN as soon as the LLC is formed. If you are close to April 15 and the EIN has not arrived, file Form 7004 to extend to October 15 while you wait. You cannot file Form 5472 without the EIN, so allow lead time.

Form 5472 reports dollar amounts, so before you touch the form you assemble the numbers. The trigger for filing is a transaction, not profit — and virtually every foreign-owned single-member LLC has at least one reportable transaction because funding the LLC itself counts. So even a zero-revenue LLC has something to report.

The cleanest way to do this is a one-line-per-transaction ledger with the date, the counterparty (you or a related foreign company), the direction, and the amount in US dollars. Section 6038A also imposes a record-keeping rule: missing records carry their own separate $25,000 penalty, so keep these documents for the life of the entity plus several years.

Form 5472 cannot go to the IRS alone — the regulations require it to be attached to an income-tax return. The only return available to a disregarded entity is a pro forma Form 1120. “Pro forma” means “as a matter of form”: this 1120 is a cover sheet, not a real tax calculation.

What you fill in — and what you leave blank

On page 1 of Form 1120 you complete only the header: the LLC's legal name, US mailing address, EIN, the box for date incorporated (use the formation date), and the total-assets line if known. You then write “Foreign-owned U.S. DE” across the top margin of the form. That label tells the IRS this is a disregarded-entity filing carrying a Form 5472, not a taxable corporate return.

Every numbered income, deduction, and tax line — lines 1 through the bottom of page 1, plus the schedules — stays blank. A foreign-owned disregarded entity pays no entity-level federal income tax, so there is nothing to compute. Do not sign it as a normal 1120 return with a tax due; the only purpose is to carry Form 5472.

Form 5472 has nine parts, but a founder-owned LLC touches only five of them. The form identifies who the entity is, who the foreign owner is, and what money changed hands. Work top to bottom.

Part I — the US reporting entity

Enter the LLC's legal name, US address, EIN, country of incorporation (United States), the date it was formed, the principal business activity, and total assets. Check the box indicating the reporting corporation is a foreign-owned U.S. disregarded entity.

Part II — the 25% foreign shareholder

Enter the foreign owner's full name, the country under whose laws they are a citizen or resident, and their foreign tax identification number (or a note that none is issued). For a 100%-owned LLC, you are the 25% foreign shareholder.

Part III — the related party

Identify the related party each transaction was with. For most single-owner LLCs, the related party is the same person as the Part II owner. List their name, address, and relationship to the LLC.

Parts V and VI — the dollar amounts

This is where your ledger goes. Part V reports the reportable transactions of a foreign-owned U.S. DE. Part VI captures amounts such as loans, capital contributions, and distributions. Enter each amount in whole US dollars. If you only funded the LLC, you may have a single entry — but that entry is enough to require the entire filing.

The Form 5472 and the pro forma 1120 are filed together as one submission. Place the pro forma 1120 on top as the cover and attach each Form 5472 behind it. There is no separate envelope or separate mailing for the 5472 — it does not stand alone.

One related party = one Form 5472. A single-owner LLC with one foreign owner files exactly one Form 5472. If the LLC also transacted with a second related foreign party — say a foreign company you also control that the LLC paid for services — you complete a second Form 5472 for that party and attach it to the same pro forma 1120. The 1120 is never duplicated; only the 5472 multiplies.

Double-check that the EIN matches on both forms and that the LLC's name is identical. A mismatch is one of the avoidable errors that can cause the IRS to treat the form as incomplete — and a substantially incomplete Form 5472 is treated the same as an unfiled one for penalty purposes.

This is the step founders get wrong most often. There is no e-file path for a foreign-owned disregarded entity filing a pro forma 1120 with Form 5472. Tax software that e-files normal corporate returns will not transmit this package. The IRS accepts it only by mail or fax.

For mail, use a service that gives you tracking or a certified-mail receipt. For fax, keep the confirmation page that prints after a successful send. Either one establishes that you filed on time — the single most important fact if the IRS ever questions the filing.

Filing on time matters more than filing perfectly

The deadline is April 15 for the prior calendar year. Filing Form 7004 by April 15 moves the deadline to October 15. There is no entity-level tax to pay, so the extension is purely about the form. A timely, slightly imperfect filing beats a late one every time.

Because there is no statute of limitations on an unfiled information return, the IRS can question a Form 5472 years later. Your proof of timely filing is what closes that question instantly. Keep it with the entity's permanent records.

Also retain the underlying records you used to complete Parts IV–VI — bank statements, loan notes, the operating agreement, and your transaction ledger. The section 6038A record-keeping rule carries its own $25,000 penalty, separate from the penalty for failing to file the form, so the records are not optional.

It is worth stating again because it costs people money: there is no e-file path for this filing. The pro forma 1120 is not a normal corporate return, and the IRS routes foreign-owned disregarded-entity filings to a dedicated processing channel in Austin that accepts only paper and fax.

If a tax-software product offers to e-file your “1120,” it is treating your LLC as a taxable corporation — which it is not. Filing the wrong way can leave the actual Form 5472 obligation unmet, exposing you to the $25,000 penalty even though you thought you filed. Mail or fax, every time.

Form 5472 carries one of the harshest information-return penalties in the US tax code. The base penalty is $25,000 for each form not filed, filed late, or filed substantially incomplete. A form with missing parts or wrong amounts is treated the same as a form that was never filed.

The penalty also compounds. If the IRS sends a notice of failure and the form is still not filed within 90 days, an additional $25,000 applies for each 30-day period the failure continues. With no statute of limitations, a year missed five years ago can still be assessed today. This is exactly why the seven steps above — and keeping proof — are worth doing carefully.

If you have already missed a year, the answer is to file as soon as possible: a late filing is far cheaper than an unfiled one, and the IRS does offer reasonable-cause abatement in some cases. Abatement is a request you submit explaining why the failure was reasonable; it is not guaranteed.

DIY filing is free but unforgiving: the $25,000 penalty applies even to an honest mistake or a missed deadline. The five errors that cause most penalties are assuming a zero-income LLC need not file, trying to e-file, skipping the pro forma 1120, missing April 15, and keeping no proof of filing.

For a flat $299, form5472.tax completes all seven steps for you, has a specialist review the package, and files it the correct way — saving $248 versus form5472.online and up to $1,700 versus doola. If you are unsure whether you even need to file, the /do-i-need-to-file/ qualifier settles it in under a minute.

Filing is not the end of the obligation — it is the start of an annual cycle. Unlike a refund-bearing individual return, a foreign-owned disregarded entity's pro forma Form 1120 with Form 5472 attached generates no acknowledgment: the IRS does not mail an acceptance letter, send an email, or post a status you can look up. Because there is no e-file path, there is also no rejection notice. Silence is normal— and it is exactly why your own dated proof of submission is the only evidence that you filed on time. Treat the post-filing steps below as the difference between “filed” and “provably filed.”

Keep your proof — there is no IRS confirmation

Store the certified-mail receipt and tracking history (if you mailed) or the fax transmission confirmation page (if you faxed) with the entity's permanent records. Save a complete copy of the filed package — the pro forma 1120 and every Form 5472 — alongside it. Because Form 5472 has no statute of limitations, the IRS can question a filing years later under IRC §6038A, and your dated proof is what closes that question in one step. Without it, you cannot prove you beat the deadline, and a filing the IRS cannot see is treated like one that never happened — exposing you to the $25,000 per-form, per-year penalty.

Set a reminder for next April 15

Form 5472 is an annual requirement. The same LLC that filed for the 2025 tax year by April 15, 2026 must file again for 2026 by April 15, 2027 — and every year after, as long as the entity exists and has a reportable transaction. Since virtually every foreign-owned single-member LLC has at least one reportable transaction each year (even a capital contribution or paying an annual state fee through the owner counts), assume you file every year unless you have confirmed otherwise. Put a recurring calendar reminder on roughly March 1 to start the next filing, leaving six weeks of lead time. If you need more time, Form 7004 filed by April 15 extends the deadline to October 15.

If you realize you made an error, file a corrected return

If you discover after filing that a Form 5472 amount was wrong, a part was left blank, or a related party was missed, do not wait for the IRS to notice. File a corrected return: prepare a complete new Form 5472 with the right information, check the “corrected” box at the top of the form, attach it to a pro forma Form 1120, and mail it to P.O. Box 149342, Austin, TX 78714-9342or fax it to 855-887-7737 — the same two methods as the original, because a corrected return still cannot be e-filed. A substantially incomplete Form 5472 is treated the same as an unfiled one for penalty purposes, so correcting a material omission promptly is what protects you. Self-correcting before the IRS sends a notice also strengthens any future reasonable-causeargument. We prepare and file the complete package — original or corrected — for a flat $299, far below the $547 charged at form5472.online or $1,999/year at doola.