Foreign-Owned US LLCs: EIN, Form 5472 and the $25,000 Penalty

· RKube Services

Own a US LLC from abroad? Here is how to get the EIN, what Form 5472 and the pro forma 1120 cover, which transactions count, and how to avoid the $25,000 penalty.

Forming a US LLC from abroad is easy. A founder in Toronto, Lagos, Bangalore or Berlin can pick a state online, pay a filing fee, get a registered agent and have a company in a day or two. Stripe, Amazon and Shopify accounts follow soon after.

The paperwork that comes next is where people get hurt. A single-member LLC owned by someone who isn't a US person has a federal filing almost nobody mentions at formation: Form 5472, attached to a pro forma Form 1120. It's due every year, even when the LLC made no money. And the penalty for missing it starts at $25,000.

This guide covers the three pieces a foreign owner needs to get right: the EIN, the annual Form 5472 filing, and the records that make the filing possible. If your LLC uses a calendar year and you extended its return with Form 7004, the extended deadline is October 15, 2026. That's ten days from the date of this post.

Who this applies to

The rule targets a specific setup. You're in scope if all of these are true:

  • The company is an LLC formed in a US state (Delaware, Wyoming, North Carolina, anywhere).
  • It has one owner.
  • That owner is a foreign person: a non-US citizen who isn't a green card holder or US tax resident, or a foreign company.
  • The LLC hasn't elected to be taxed as a corporation.

For income tax, a single-member LLC is normally "disregarded." The IRS looks through it to the owner. A US owner just reports the activity on their own return and the LLC files nothing separate.

Starting with tax years that began in 2017, the IRS carved out an exception. A foreign-owned disregarded LLC is treated as a corporation for one purpose only: reporting transactions with its foreign owner and other related parties. That's the job Form 5472 does.

An LLC with two or more owners is a different case. It's taxed as a partnership by default and files Form 1065, with its own set of foreign-partner rules. This post sticks to the single-owner version, because that's the one people form most often and miss most often.

Step 1: the EIN

The LLC needs its own Employer Identification Number before it can file anything, open most US bank accounts or get paid by a payment processor.

The IRS online EIN application asks for the SSN or ITIN of a "responsible party." Most foreign founders have neither, so the online route is closed to them. The options that remain:

  • File Form SS-4 by fax or mail to the IRS. Fax is faster; mail can take several weeks.
  • Call the IRS international line (267-941-1099, not toll-free) during its business hours and apply by phone.

On the SS-4, the responsible party is the foreign owner. The instructions allow you to complete the form without a US taxpayer number when the owner doesn't have one. Use the LLC's legal name exactly as it appears on the state formation document. A mismatch here causes problems later with banks and with the IRS matching your return to your account.

You don't need an ITIN to get the EIN. You may need one later if the LLC's income is taxable to you in the US, but that's a separate question covered below.

Keep the EIN confirmation letter (CP 575) somewhere safe. Banks ask for it, and the IRS won't send a duplicate. They'll send a different letter (147C) if you call and request one.

Step 2: the annual Form 5472 filing

Here's what the filing looks like in practice.

You file a Form 1120, the US corporate income tax return, but only partly filled in. The IRS calls it a pro forma return. On it you complete the company's name, address, EIN and a few identifying items, and write "Foreign-owned U.S. DE" across the top. You don't compute corporate tax on it, because the LLC isn't actually a corporation for income tax.

Form 5472 is attached to that pro forma 1120. It identifies the foreign owner (name, address, country of citizenship and tax residence, and a foreign tax ID or reference number), and it reports "reportable transactions" between the LLC and that owner during the year.

This is where most owners underestimate the form. It's broader than sales and loans. Common examples:

  • Money you put into the LLC to get it started (capital contributions).
  • Money you take out (distributions).
  • Loans in either direction, and interest on them.
  • Formation and registered agent fees you paid personally on the LLC's behalf.
  • Software subscriptions, ad spend or other expenses you paid from a personal card for the LLC.
  • Rent, services, royalties or goods that move between you and the LLC.

If you wired $5,000 from your home bank to the LLC's US account in March and paid the $300 registered agent fee from your personal card in June, both are reportable. A year with no customers and no revenue can still have reportable transactions, because simply funding the company is one.

For a calendar-year LLC, the pro forma 1120 with Form 5472 is due April 15. Form 7004 extends it six months, to October 15. For 2025 returns, that's October 15, 2026.

The extension gives you more time to file. It doesn't change what you report.

This filing doesn't fit neatly into most tax software. For years, the Form 5472 instructions have directed foreign-owned disregarded entities to send the pro forma return to a specific IRS fax number or a mailing address in Ogden, Utah, rather than e-filing. Check the current year's instructions before you send it, since addresses and fax numbers can change. Keep the fax confirmation or certified mail receipt with your records.

The $25,000 penalty

The penalty for failing to file a complete and timely Form 5472 is $25,000 per form, per year. It was $10,000 before the 2017 tax law raised it.

It can grow. If the IRS sends a notice and the form still isn't filed within 90 days, an additional $25,000 can be added for each 30-day period it stays missing.

Two details make this harsher than most penalties:

  1. It isn't tied to tax owed. The LLC may owe zero income tax and still face the full amount.
  2. An incomplete form can be treated the same as a missing one. Leaving out the owner's details or skipping transactions is a real risk.

The IRS can waive the penalty for reasonable cause, but that's a written request with facts and supporting documents, and approval isn't guaranteed. "Nobody told me" usually isn't enough on its own. Filing on time is far cheaper than arguing about it later.

If you've already missed one or more years, don't just ignore it. Talk with a qualified tax professional about filing the late returns with a reasonable cause statement. Each additional year left unfiled is another potential penalty.

Step 3: the records behind the form

Form 5472 is only as good as the records behind it. The regulations require the LLC to keep records that support the reportable transactions, and the IRS can ask for them.

In practice that means:

  • A separate US business bank account, used only for the LLC. Mixing personal and business money makes the form nearly impossible to fill in accurately.
  • A simple ledger of every movement between you and the LLC, with dates and amounts: contributions, draws, loans, expenses you paid for it.
  • Copies of invoices and receipts for formation, agent, legal and software costs.
  • The bank and payment processor statements for the full year.

A monthly bookkeeping close makes the year-end filing quick. You already know every transfer between you and the company, and the numbers on Form 5472 match the bank statements line for line. Rebuilding twelve months of transactions in October is where the errors creep in.

Other filings a foreign owner should know about

Form 5472 is the filing most specific to this setup, but it's not the only one.

Whether you personally owe US income tax depends on whether the LLC's income is "effectively connected" with a US trade or business. An LLC that sells online from abroad with no US office, staff or inventory may not have effectively connected income. An LLC with US employees, a US warehouse or dependent agents in the US likely does. If it does, you may need to file Form 1040-NR (or Form 1120-F if the owner is a foreign company) and get an ITIN. This question depends on the facts and your country's tax treaty with the US, so get advice before assuming either way.

Certain payments from US sources to a foreign person can carry 30% withholding unless a treaty reduces it. Payment platforms may ask for a Form W-8BEN or W-8BEN-E for this reason.

Every state has its own annual requirements. In North Carolina, an LLC files an annual report with the Secretary of State by April 15 each year, with a $200 fee. Delaware LLCs pay a $300 annual tax due June 1. Wyoming requires an annual report with a license tax based on assets in the state. Missing these can lead to administrative dissolution, which affects your bank account and contracts.

Under FinCEN's March 2025 interim final rule, companies created in the United States are no longer required to file beneficial ownership information reports. That includes a US-formed LLC with a foreign owner. Rules in this area have changed several times, so check FinCEN's current guidance before relying on it.

A quick checklist

  • Confirm the LLC's tax classification: single-member, disregarded, foreign owner.
  • Get the EIN (SS-4 by fax or mail, or the IRS international phone line) and save the CP 575 letter.
  • Open a US bank account used only for the LLC.
  • Log every transfer between you and the LLC as it happens.
  • Before April 15, file the pro forma Form 1120 with Form 5472, or file Form 7004 to extend to October 15.
  • Send it the way the current Form 5472 instructions direct, and keep proof of filing.
  • File your state annual report and pay any state fee.
  • Ask a qualified professional whether you owe US income tax personally and whether a treaty applies.

Where RKube fits

We're a bookkeeping, tax prep and payroll firm based in North Carolina, working with businesses across the US. For foreign-owned LLCs we keep monthly books, track owner contributions and distributions as they happen, and prepare the numbers that feed the pro forma 1120 and Form 5472. We're not a CPA firm and we don't represent anyone before the IRS. When a situation needs that, we'll tell you.

If you own a US LLC from abroad and aren't sure your filings are current, start with a free 30-day bookkeeping trial and a short scoping call. Call (984) 234-7030 or visit rkubeservices.com.

This article is general information, not tax or legal advice. Rules for foreign-owned entities depend on your facts and your country's tax treaty with the US. Talk with a qualified tax professional about your situation.

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