How to File Form 5472 Online (2026): Step-by-Step Guide

Filing IRS Form 5472 is a requirement for every foreign-owned US LLC, but the process does not have to be complicated. Whether this is your first filing or you are catching up on prior years, this step-by-step guide will walk you through the entire process -- from gathering your documents to submitting the completed form to the IRS.

By the end of this guide, you will know exactly what information you need, how to complete each section of the form, and the best method for submitting it. Let's get started.

What You Need Before You Start

Before you begin filling out Form 5472, make sure you have the following information and documents ready:

• EIN (Employer Identification Number)-- Your LLC's federal tax ID number. If you do not have one yet, you must apply for it first using Form SS-4.
• LLC formation details -- State of formation, date of incorporation, principal business activity, and registered address.
• Foreign owner information -- Full legal name, country of citizenship, country of residence, address, and taxpayer identification number (if any) of each 25%+ foreign owner.
• Transaction records -- A complete record of all monetary transactions between the LLC and its foreign owner(s) during the tax year. This includes capital contributions, distributions, loans, payments for services, and any other transfers.
• Prior year filings(if applicable) -- Having last year's Form 5472 on hand helps ensure consistency.
• IRS Form 5472 -- Download the latest version from irs.gov or use a digital filing tool to generate it.

Step 1: Gather Your Information

Start by collecting all the data you will need to complete the form. Organize your transaction records into categories, as the form asks you to report different types of transactions in separate line items.

Common transaction categories to organize:

• Capital contributions -- Money the foreign owner transferred into the LLC (e.g., initial investment, additional funding)
• Distributions -- Money the LLC sent back to the foreign owner
• Loans received -- Money borrowed by the LLC from the foreign owner
• Loan repayments -- Payments made by the LLC to repay loans from the foreign owner
• Payments for services -- If the LLC paid the foreign owner (or vice versa) for any services
• Rent and lease payments -- If the LLC uses property owned by the foreign owner, or vice versa
• Other amounts -- Any other monetary exchange not captured above

Calculate the total dollar amount for each category for the entire tax year (January 1 through December 31 for calendar-year filers).

Step 2: Complete Part I -- Reporting Corporation

Part I asks for information about the reporting entity -- your US LLC. Fill in the following fields:

• Line 1a:Name of the reporting corporation (your LLC's legal name as registered with the state)
• Line 1b: EIN (Employer Identification Number)
• Line 1c: Total assets at end of tax year. For disregarded entities with minimal activity, this is often the amount of capital contributed.
• Line 1d: Address of the reporting corporation (principal US address)
• Line 1e: Principal business activity and NAICS code. Look up your business activity code at census.gov/naics.
• Line 1f-1h: Country of incorporation (United States), state of incorporation, and date of incorporation

For disregarded entities, check the box that indicates the entity is filing a pro forma Form 1120. This tells the IRS that this is an information return, not a full corporate tax return.

Step 3: Complete Part II -- 25% Foreign Shareholder

Part II captures details about the foreign owner. You need to provide:

• Line 2a: Name of the 25% foreign shareholder (or owner)
• Line 2b: US identifying number (if any -- this could be an ITIN or SSN, but many foreign owners do not have one)
• Line 2c: Address of the foreign shareholder (their home country address)
• Line 2d: Country of citizenship
• Line 2e: Country of residence
• Line 2f: Percentage of ownership in the reporting corporation

If the LLC has multiple foreign owners who each hold 25% or more, you must file a separate Form 5472 for each owner. Each form carries its own $25,000 penalty for non-filing, so accuracy is critical.

Step 4: Complete Part III -- Related Party Information

Part III identifies related parties involved in reportable transactions. In most cases for single-member LLCs, the related party is the same as the foreign owner listed in Part II.

• Line 3a: Name of the related party
• Line 3b: Address
• Line 3c: US identifying number (if any)
• Line 3d:Foreign identifying number (tax ID from the owner's home country, if applicable)
• Line 3e: Relationship to reporting corporation (direct owner, indirect owner, etc.)
• Line 3f: Principal business activity of the related party

Step 5: Complete Part IV -- Monetary Transactions

Part IV is the most important section of Form 5472. This is where you report all monetary transactions between the LLC and the related foreign party during the tax year.

The form has specific line items for different transaction types. Enter the total dollar amount for each category:

• Line 4a-4d: Sales and purchases of stock in trade, tangible property, and other property rights
• Line 5-6: Compensation for services (amounts paid and received)
• Line 7-8: Commissions paid and received
• Line 9-10: Rents and royalties paid and received
• Line 13-14: Interest paid and received
• Line 15: Premiums paid and received for insurance and reinsurance
• Line 17-18: Amounts borrowed and loaned
• Line 22-23: Capital contributions and distributions
• Line 24: Other amounts paid
• Line 25: Other amounts received

For most single-member foreign-owned LLCs, the key line items are capital contributions (Line 22) and distributions (Line 23). If the only activity was the owner putting money into the LLC, you would enter that total on Line 22 and leave all other lines blank or zero.

Step 6: Complete Parts V and VI (If Applicable)

Part V covers reportable transactions of a reporting corporation that is a foreign-owned US disregarded entity (US DE). This section applies when the disregarded entity itself had transactions with other related parties beyond its direct owner.

Part VI covers additional information and supplemental schedules. Most single-member foreign-owned LLCs with straightforward structures will not need to complete these sections.

If you are unsure whether Parts V or VI apply to you, the general rule is: if your LLC only had transactions with its direct foreign owner (capital contributions, distributions, etc.), you can skip these parts.

Step 7: Attach Pro Forma Form 1120

If your LLC is a disregarded entity (single-member foreign-owned LLC), you must attach a pro forma Form 1120 to your Form 5472. Here is how to prepare it:

1. Download Form 1120 (U.S. Corporation Income Tax Return) from irs.gov
2. Write "Foreign-Owned U.S. DE" across the top of the first page
3. Complete only the header section on page 1: LLC name, address, EIN, date of incorporation, and NAICS code
4. Fill in Item B (business activity code) and Item E (date of incorporation)
5. Leave all income, deduction, and tax computation lines blank or zero
6. Do not sign the pro forma 1120 -- the IRS does not require a signature on the pro forma version

The completed pro forma 1120 should be attached as the first page of your submission, followed by Form 5472.

Step 8: Submit to the IRS

Unlike most tax forms, Form 5472 cannot be e-filed. You must submit it by either fax or mail.

Option A: Fax Submission (Recommended)

1. Compile your documents in this order: Pro Forma 1120 (page 1), then Form 5472
2. Fax to: (855) 887-7737 (for disregarded entities filing pro forma 1120)
3. Keep your fax confirmation page as proof of timely filing
4. Consider using an online fax service if you do not have access to a physical fax machine (services like eFax or FaxZero work well)

Option B: Mail Submission

1. Print the completed Pro Forma 1120 and Form 5472
2. Mail to:
   Department of the Treasury
   Internal Revenue Service Center
   Ogden, UT 84201-0801
3. Use certified mail with return receipt requested or a trackable shipping service (USPS, FedEx, UPS) to have proof of timely mailing

Filing Methods Compared

Here is a side-by-side comparison to help you choose the best submission method:

Common Filing Errors to Avoid

These mistakes can result in your form being treated as incomplete -- which triggers the same $25,000 penalty as not filing at all:

1. Wrong EIN or name mismatch.The LLC name and EIN on Form 5472 must exactly match what is on file with the IRS. Even a minor discrepancy (such as "LLC" vs. "L.L.C.") can cause processing issues.
2. Missing the pro forma 1120. Filing Form 5472 without the pro forma 1120 for disregarded entities is treated as an incomplete submission.
3. Leaving Part IV blank. Even if you had only one transaction, you must report it. A completely blank Part IV suggests you forgot to fill it out.
4. Not reporting capital contributions. Many first-time filers do not realize that putting money into the LLC counts as a reportable transaction. If the owner transferred $100 to open a bank account, that is a capital contribution.
5. Using the wrong fax number. The IRS has different fax numbers for different form types. Make sure you use the number designated for Form 5472 / pro forma 1120 filers.
6. Filing after the deadline without an extension. If you miss the April 15 deadline and did not file Form 7004 for an extension, the penalty is assessed automatically.
7. Not retaining proof of submission. Without a fax confirmation or certified mail receipt, you have no evidence of timely filing if the IRS claims it was not received.
8. Reporting amounts in a foreign currency. All amounts on Form 5472 must be reported in US dollars. Convert foreign currency transactions using the applicable exchange rate for the date of the transaction or the annual average exchange rate.

Key Takeaways

• Filing Form 5472 requires an EIN, LLC formation details, foreign owner information, and a record of all transactions between the LLC and its foreign owner.
• The form has four main parts to complete: Part I (reporting entity), Part II (foreign owner), Part III (related party), and Part IV (monetary transactions).
• Single-member foreign-owned LLCs must attach a pro forma Form 1120 with "Foreign-Owned U.S. DE" written across the top.
• Form 5472 cannot be e-filed. Submit by fax (recommended) or mail with proof of delivery.
• Common errors like missing the pro forma 1120, wrong EIN, or blank Part IV can trigger a $25,000 penalty.
• Using a digital tool like Form5472.io minimizes errors and generates IRS-ready documents in minutes.

Frequently Asked Questions

How long does it take to fill out Form 5472?

If you have all your information ready, manually completing Form 5472 takes approximately 30-60 minutes for a straightforward single-member LLC. Using a digital tool like Form5472.io can reduce this to under 15 minutes, since the software auto-fills fields and validates your entries.

Can I file Form 5472 online or electronically?

No. The IRS does not currently accept Form 5472 through its e-file system. You must submit the completed form by fax or mail. However, you can use online tools to generate the form digitally and then fax it using an online fax service.

What if I made a mistake on a previously filed Form 5472?

If you discover an error on a previously filed Form 5472, you should file an amended return. Prepare a corrected Form 5472, write "AMENDED" across the top, and submit it to the same IRS address or fax number. It is better to self-correct than to wait for the IRS to find the error.

Do I need to file a separate Form 5472 for each foreign owner?

Yes. If your LLC has multiple foreign owners who each hold 25% or more, a separate Form 5472 must be filed for each owner. Each form reports the transactions between the LLC and that specific owner. All forms can be attached to the same pro forma Form 1120.

What happens if the IRS does not acknowledge my fax submission?

The IRS does not send a confirmation letter after receiving a faxed Form 5472. Your fax confirmation page (showing the date, time, fax number, and number of pages sent) serves as your proof of timely filing. If you used an online fax service, save the digital receipt. The IRS will only contact you if there is a problem with your submission.

Is there a fee for filing Form 5472?

No. There is no IRS filing fee for Form 5472 itself. Your only costs are the method of submission (fax or postage) and any professional services or software you use to prepare the form. The $25,000 penalty applies only if you fail to file or file a substantially incomplete return.