What Is IRS Form 5472 (2026): Complete Guide for Foreign-Owned LLCs

If you own a US LLC as a non-US resident, the IRS wants to hear from you every year. The vehicle for that conversation is IRS Form 5472— a disclosure form that tracks transactions between your US company and its foreign owner.

Fail to file it and you are staring down a $25,000 penalty per form, per year. No warnings, no grace period. The IRS treats this form as a critical enforcement tool under its international tax compliance program.

This guide covers everything you need to know about Form 5472 in 2026: who must file, what information is required, deadlines, penalties, filing methods, and how to avoid the most common mistakes that trigger IRS attention.

What Is Form 5472?

Form 5472(officially titled “Information Return of a 25% Foreign-Owned U.S. Corporation or a Foreign Corporation Engaged in a U.S. Trade or Business”) is an informational return filed with the IRS. It does not calculate tax owed. Instead, it reports reportable transactions between a US reporting corporation and its foreign related parties.

For single-member LLCs owned by non-US persons, the LLC is treated as a domestic corporationsolely for the purpose of filing Form 5472. This means even if your LLC had zero revenue and zero expenses, you still need to file this form if any reportable transaction occurred — and the IRS defines “reportable transaction” very broadly.

Common reportable transactions include:

• Capital contributions (funding your LLC from personal funds)
• Payments for services, rent, or interest
• Loans to or from the foreign owner
• Distributions or withdrawals
• Use of company property by the owner (or vice versa)
• Even opening a bank account and depositing money qualifies

Who Must File Form 5472?

Two conditions must be met for a Form 5472 filing requirement:

1. A reporting corporation exists. This is any US corporation (or an LLC treated as a corporation for this purpose) that is at least 25% foreign-owned.
2. A reportable transaction occurred. Any monetary or non-monetary exchange between the reporting corporation and a foreign related party during the tax year.

In practical terms, almost every foreign-owned single-member LLC in the USmust file Form 5472. If you formed an LLC in Wyoming, Delaware, New Mexico, or any other state, and you are a non-US person — this applies to you.

What Information Does Form 5472 Require?

Form 5472 is divided into several parts. Here is a breakdown of what each section covers:

Part I — Reporting Corporation

Basic information about the US entity: name, address, EIN (Employer Identification Number), state of incorporation, principal business activity, and total assets.

Part II — 25% Foreign Shareholder

Details about the foreign owner: name, address, country of citizenship or incorporation, US taxpayer ID (if any), and the percentage of ownership.

Part III — Related Party

Information about the specific foreign related party involved in the reportable transactions. In most single-member LLC cases, the related party is the same as the 25% foreign shareholder in Part II.

Part IV — Monetary Transactions

The core of the form. This section lists dollar amounts for various categories of transactions: sales, purchases, rents, royalties, service fees, commissions, capital contributions, loans, and more. Each line item requires the total amount for the tax year.

Part V — Reportable Transactions of a Reporting Corporation That Is a Foreign-Owned U.S. DE

For disregarded entities (single-member LLCs), this section captures transactions that would otherwise go unreported. This is the most commonly used section for foreign-owned LLCs.

Part VI — Additional Information

Supplementary questions about the reporting corporation, including whether it filed other international forms, whether it is part of a consolidated group, and additional compliance disclosures.

When Is the Form 5472 Due?

Form 5472 is filed as an attachment to Form 1120 (or a pro forma Form 1120 for disregarded entities). The filing deadline follows the corporate tax return calendar:

• April 15— Due date for calendar-year filers (most foreign-owned LLCs)
• Automatic 6-month extension available by filing Form 7004 before the original deadline, pushing the due date to October 15

Even with an extension, it is critical to file Form 7004 on time. If you miss the April 15 deadline without an extension, penalties begin accruing immediately.

How to File Form 5472

Unlike most IRS forms, Form 5472 cannot be e-filed through standard tax software. The IRS requires it to be submitted via paper or fax. Here are your options:

Option 1: Mail

Print Form 5472, attach it to a pro forma Form 1120, and mail to:

Department of the Treasury
Internal Revenue Service
Ogden, UT 84201-0012

Option 2: Fax

You can fax completed forms to the IRS at their designated fax number. This is faster but requires a reliable fax service and careful confirmation that the transmission was successful.

Option 3: Digital Filing Tools

Services like Form5472.io let you fill out your Form 5472 and pro forma 1120 digitally. The tool generates IRS-ready PDF documents that you can print, sign, and submit. This eliminates calculation errors, ensures every required field is completed, and saves hours of manual work.

Form 5472 Penalties

The penalties for non-compliance with Form 5472 are among the harshest in the entire US tax code for informational returns:

• $25,000 penalty for each form that is not filed, filed late, or filed with incomplete/inaccurate information
• An additional $25,000 for each 30-day period (or fraction thereof) that non-compliance continues after the IRS sends a notice, with no upper cap
• Penalties are assessed per form, per year— if you missed three years, that is potentially $75,000 or more

The IRS has been aggressively enforcing Form 5472 compliancein recent years, particularly targeting foreign-owned LLCs that were registered but never filed. The penalty is automatic — no audit required.

Who Should Use a Digital Filing Tool? Who Should Hire a CPA?

The right choice depends on the complexity of your situation.

If your LLC is a straightforward single-member entity with basic capital contributions and operating expenses, a digital filing tool will save you time and money. If you have a complex corporate structure, transfer pricing issues, or need strategic tax planning, a CPA is the better investment.

Common Mistakes to Avoid

Based on IRS data and practitioner experience, these are the errors most likely to trigger a penalty notice:

1. Not Filing at All

Many foreign LLC owners don’t even know Form 5472 exists. They register an LLC, get an EIN, open a bank account — and assume their registered agent handles everything. They don’t. Filing is your responsibility.

2. Filing Without a Pro Forma 1120

Form 5472 must be attached to a Form 1120. For disregarded entities, this is a pro forma 1120— a simplified version with zeros in most fields, but it must still be included. Submitting Form 5472 alone will be treated as an incomplete filing.

3. Incorrect EIN or Entity Information

Typos in the EIN, wrong entity name, or mismatched address can cause processing delays and trigger penalty notices. Always double-check your EIN confirmation letter (CP 575) before filing.

4. Missing Capital Contributions

Transferring money from your personal bank account to your LLC bank account is a reportable transaction. Many filers forget to include these capital contributions on the form.

5. Not Filing Form 7004 for an Extension

If you cannot file by April 15, you must file Form 7004to request an extension. Simply not filing and submitting later will result in a late-filing penalty — even if the form itself is correct.

6. Using the Wrong Tax Year

Form 5472 must match the tax year of the associated Form 1120. For most LLCs, this is the calendar year (January 1 – December 31). Using fiscal year dates incorrectly is a common error.

Key Takeaways

• Form 5472 is an IRS information return required for US entities with 25%+ foreign ownership that have reportable transactions.
• Almost every foreign-owned single-member LLC must file, even if the LLC earned no income.
• The form is filed as an attachment to Form 1120 (or pro forma 1120) by April 15 each year.
• The penalty for non-filing is $25,000 per form per year, and it can increase with continued non-compliance.
• Form 5472 cannot be e-filed— it must be mailed or faxed to the IRS.
• Digital tools like Form5472.io generate IRS-ready PDFs and help avoid the most common filing errors.
• Always file Form 7004if you need more time — never simply file late.

Frequently Asked Questions

Do I need to file Form 5472 if my LLC had no income?

Yes, in most cases. The filing requirement is triggered by reportable transactions, not income. If you contributed capital, paid for a registered agent, or had any financial interaction between you and the LLC, you must file.

Can I file Form 5472 electronically?

No. As of 2026, the IRS does not accept electronically filed Form 5472. You must submit it by mail or fax. Digital tools like Form5472.io help you generate the completed form, but the final submission to the IRS is still paper-based.

What is a pro forma 1120?

A pro forma 1120is a simplified version of Form 1120 (U.S. Corporation Income Tax Return) filed by disregarded entities. Most fields are filled with zeros. It serves as the “cover sheet” for your Form 5472 submission. You cannot submit Form 5472 without it.

Do I need to report capital contributions on Form 5472?

Yes.Any money you transfer from your personal account to your LLC’s bank account is considered a capital contribution and is a reportable transaction. This is one of the most commonly missed items.

What happens if I have not filed Form 5472 for multiple years?

Each year of non-filing is a separate violation, and the $25,000 penalty applies per form per year. If you have missed multiple years, it is critical to file all outstanding returns as soon as possible. You may also want to submit a reasonable cause letter requesting penalty abatement.

Is Form 5472 the same as FBAR or FATCA reporting?

No. Form 5472 is specific to US entities with foreign ownership. FBAR (FinCEN 114) and FATCA (Form 8938) are separate reporting requirements for US persons with foreign financial accounts. While there can be overlap in some situations, these are distinct filing obligations with different rules and deadlines.