Form 5472 for Foreign-Owned Single-Member LLC: 2026 Filing Guide

If you live outside the United States and own a US single-member LLC, one IRS form matters more than almost any other: Form 5472. Many non-resident founders form a company, open a bank account, and assume that no US income means no US filing. That assumption can cost $25,000 for a single missed form.

This guide explains how Form 5472 for a foreign-owned single-member LLC works in 2026. It covers who has to file, what goes on the form, when it is due, and what happens if you miss it. You can form the LLC itself through a service like ZenBusiness, which offers a $0 base plan plus state fees. Formation is only the first step, though. The annual tax compliance is where non-resident owners get caught.

Why Foreign-Owned Single-Member LLCs Must File Form 5472

A single-member LLC is normally a “disregarded entity” for US federal tax. The IRS ignores it and treats the owner as the taxpayer, so a US owner usually files nothing separate for the LLC.

Since tax years beginning in 2017, the IRS has treated a foreign-owned disregarded entity differently. Under final regulations (T.D. 9796), a US LLC that is disregarded and owned by a foreign person must be treated as a domestic corporation for one narrow purpose: the reporting and recordkeeping rules of Section 6038A. The IRS wants to see money moving between a foreign owner and a US entity, even when the LLC has no US tax liability.

The rule applies when:

The LLC has a single member, and
That member is a foreign person (a non-US individual or a foreign company) who owns at least 25%, which for a single owner means 100%, and
The LLC had a “reportable transaction” with the owner or another related party during the tax year.

In practice, an LLC that never moved a dollar between the owner and the company may owe nothing. That is rare. Almost every new LLC has at least one reportable transaction, usually the owner’s initial capital contribution.

I’ve seen too many non-resident founders learn about this only after a bank or a new accountant asks whether they’ve filed. Most of them thought “no US income” meant “no US paperwork.” Please don’t assume that.

What Counts as a Reportable Transaction

The IRS defines reportable transactions broadly, and they are not limited to business income. Common ones for a small foreign-owned LLC include:

Capital contributions. You wire $2,000 from your home bank to fund the LLC’s account.
Distributions. You move money from the LLC account to your personal account abroad.
Loans. You lend money to the LLC, or it lends to you.
Payments for services. The LLC pays you or a related company, such as a management fee.
Expense reimbursements. The LLC reimburses you for a software subscription you paid personally.
Purchases or sales of goods between the LLC and a related foreign company.

Here is an example. Maria lives in Portugal and forms a Wyoming LLC for her e-commerce store. She deposits $1,500 to open the bank account and later withdraws $800 as an owner draw. Those are two reportable transactions. The amounts are small, but the filing obligation is the same as for a company moving millions.

Not every transaction between you and the LLC is excluded just because it is small. The Form 5472 instructions do carve out certain items, such as some transactions with a de minimis value, but you should confirm with a tax professional before relying on any exception.

How to File: The Pro Forma Form 1120 and Form 5472

This is the part that confuses people. A foreign-owned disregarded entity has no regular corporate return. Instead, you attach Form 5472 to a pro forma Form 1120.

“Pro forma” means you complete only a limited part of the Form 1120:

Fill in the header information (the LLC’s name, address, and EIN).
Write “Foreign-owned U.S. DE” across the top of the form.
Complete and attach Form 5472.
Sign the return. The signer is typically the owner or an authorized officer.

You do not complete the income and deduction lines, and the filing does not itself calculate a US income tax. Tax treatment of the LLC’s income is a separate question, covered by your own facts and any applicable treaty. The IRS Form 5472 page and its instructions are the authoritative source and the first place I’d check each year.

Form 5472 asks for:

Part I: Reporting corporation details (your LLC’s name, EIN, address, and tax year).
Part II: The 25% foreign shareholder (your name, address, country of residence, and tax ID if you have one).
Part III: Related party information.
Part IV: A summary of monetary transactions between the LLC and the related party.
Part V and following: Descriptions of reportable transactions, with amounts.

Most small owners need Parts I through IV and the transaction detail. The form itself is only a few pages, but accuracy matters. The numbers must match your bank records.

One practical note: the pro forma return has historically been filed by paper (mail) or fax rather than electronic filing, and the IRS has been adjusting its filing channels. Confirm the current filing method in the instructions before you file, because I’ve seen guidance change faster than blog posts get updated.

Form 5472 Due Date and Extensions

The Form 5472 due date matches the due date of the pro forma 1120 it is attached to. For a calendar-year LLC, that is April 15 of the following year.

Today is mid-October 2026, so the April 2026 deadline for tax year 2025 has passed. The next deadline is April 15, 2027, covering transactions during calendar year 2026. If you have not filed for 2025 or earlier, treat that as urgent.

You can request an automatic six-month extension with Form 7004, which pushes the deadline to October 15. Two cautions:

The extension must be filed by the original due date.
An extension gives you more time to file. It does not excuse missing the deadline entirely.

Your first year is the trickiest. If you formed the LLC in, say, November 2025 and made a single capital contribution, you likely still have a filing for 2025. Many new owners miss this because the LLC “barely did anything.”

Form 5472 Penalty: What a Missed Filing Costs

The Form 5472 penalty is what makes this topic worth your attention. Under Section 6038A, the base penalty is $25,000 per form, per year for failing to file a complete and timely Form 5472, or for failing to keep required records.

If the IRS notifies you of the failure and you still don’t file within 90 days, an additional $25,000 can apply for each 30-day period (or part of one) after that. These amounts can compound quickly.

A few points from my own research:

The penalty is assessed per Form 5472, so multiple related parties can mean multiple forms.
The IRS has a reasonable-cause process, and penalty relief has been granted in some cases, but it is discretionary and not guaranteed. It should not be your plan.
Late-filing a corrected return is usually less painful than never filing, so file as soon as you discover the gap.

Don’t treat the penalty as a theoretical risk. The IRS has pursued these penalties against small, inactive LLCs. If you’re behind, speak to a qualified tax professional about your options before you submit anything.

Getting Set Up: EIN, Records, and Choosing a Service

To file, your LLC needs an EIN. Non-US owners without a Social Security number can still get one, but the process differs from the online route US residents use. Our guide on how to get an EIN for your LLC walks through the free IRS method, and the foreign ownership guide covers other practical steps for non-residents.

Keep clean records from day one:

Use a dedicated business bank account. Don’t mix personal expenses in.
Document every wire between you and the LLC with the date, amount, and purpose.
Keep these records for as long as they may be relevant to the IRS. The rule is generally the life of the entity plus the applicable statute of limitations, so ask your tax professional about retention.

On picking a formation service, here is how I’d think about it for a non-resident owner in 2026:

ZenBusiness is my first pick for most foreign owners who want a simple, low-cost setup. As of this writing, its Starter plan is $0 plus state fees, with paid tiers (Pro and Premium) adding registered agent, compliance, and other features. Check current pricing on their site.
LegalZoom is a solid secondary option if you want a brand with broad legal-services support, though its paid tiers generally cost more.
Northwest Registered Agent is worth a look if privacy is your priority, since it lists its own address on public filings.

No formation service files Form 5472 for you. That filing sits with you or your tax preparer, so budget for it separately. For a side-by-side look at costs and features, see our ranking of the best LLC formation services.

State choice matters too. Delaware adds a $300 annual franchise tax, while states like Wyoming and New Mexico tend to cost less to maintain. None of them removes the federal Form 5472 requirement, since it applies regardless of state.

One more 2026 note: beneficial ownership reporting rules have shifted. FinCEN’s 2025 interim final rule narrowed Corporate Transparency Act reporting for US-formed companies, and our BOI report guide for single-member LLCs tracks where things stand. Rules like this keep changing, so verify the current status at FinCEN.gov before assuming you do or don’t have a BOI obligation. This is separate from Form 5472, and satisfying one never replaces the other.

Frequently Asked Questions

Who has to file Form 5472 for a foreign-owned single-member LLC?

A US single-member LLC owned by a non-US person generally must file if it had a reportable transaction with its owner or another related party during the year. It files the form together with a pro forma Form 1120.

What is the Form 5472 due date in 2026?

For a calendar-year LLC, the due date is April 15 of the year after the tax year. The 2026 tax year return is due April 15, 2027. A Form 7004 extension can move the deadline to October 15 if filed on time.

How much is the Form 5472 penalty?

The base penalty is $25,000 per form per year for failing to file or maintain required records. Additional $25,000 amounts can apply for each 30-day period after IRS notice if the failure continues. Relief for reasonable cause is possible but not guaranteed.

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

Possibly yes. The trigger is a reportable transaction, not income. A simple capital contribution or owner distribution can be enough, so a “dormant” LLC may still have a filing obligation.

Do I pay US tax just because I file Form 5472?

Filing is an information requirement and does not by itself create tax. Whether the LLC’s income is taxable in the US depends on factors like whether income is effectively connected with a US trade or business, and any applicable tax treaty. A tax professional can assess your situation.

Can I file Form 5472 myself?

Yes, you can prepare it yourself using the IRS instructions, and some owners do for simple situations. Many hire a tax preparer experienced with international filings, since errors are costly. Typical fees vary widely, so get quotes.

What if I missed filing in prior years?

File as soon as you can and speak with a qualified tax professional about penalty abatement based on reasonable cause. Delay usually makes the situation worse.

Does my LLC need a US address for the filing?

The LLC needs a mailing address, and a registered agent service in its formation state can provide one for state purposes. See our overview of what a registered agent is for more. Confirm with your preparer which address belongs on the IRS return.

Bottom Line

Handling Form 5472 for a foreign-owned single-member LLC is mostly a matter of discipline: get an EIN, keep clean records, track every transaction with yourself, and file the pro forma 1120 with Form 5472 by April 15. The form is short and the process is manageable. The cost of ignoring it, a possible $25,000 penalty, is out of proportion to the effort. In my experience, owners who put a calendar reminder in place on day one almost never have problems. Form your LLC with a provider that fits your budget, then book your tax preparer early in 2027.

The author name used in this article may be a pen name or pseudonym and is used for illustrative and editorial purposes only. This article is for informational purposes only and does not constitute investment, tax, or legal advice. Tax rules, penalties, filing methods, and provider pricing change frequently. Consult qualified professionals before making financial decisions.