Foreign-Owned US Disregarded Entity: Form 5472, FIRPTA, and ECI

A foreign person who owns a US single-member LLC sits inside a specific set of federal tax rules: the LLC is usually “disregarded” for income tax, so the IRS taxes the foreign owner directly on the LLC’s US-source income, but the entity itself still has to file an annual information return (Form 5472 with a pro forma Form 1120) or face a $25,000 penalty. The tax rules for a foreign-owned US disregarded entity split cleanly in two — an income tax side that follows the owner, and an information-reporting side that follows the entity — and both have to be handled every year.

What “Disregarded” Actually Means Here

A single-member LLC that has not filed Form 8832 to elect corporate treatment is a disregarded entity for federal income tax purposes.¹ The IRS looks through it. Income, deductions, and credits belong to the sole owner, and the LLC files no income tax return of its own.

For a foreign owner, that means the IRS treats you as if you were personally doing whatever the LLC does. If the LLC sells goods in the US, you are the seller. If it collects rent, you are the landlord. State-law liability protection still works normally; there just is no separate federal taxpayer.

The important twist: for certain information-reporting obligations, the same disregarded entity is treated as a standalone domestic corporation. It needs its own EIN, has to file Form 5472, and has to keep records of transactions with its foreign owner. That gap between “invisible for income tax” and “visible for reporting” is where most owners get into trouble.

How the Foreign Owner’s Income Is Taxed

US tax law splits a foreign person’s US-source income into two categories with very different mechanics.

Effectively Connected Income (ECI)

Income from actively conducting a US trade or business is effectively connected income. Selling products, providing services, or running regular commercial operations on US soil generally produces ECI, which is taxed at the same graduated rates that apply to US citizens and residents, on net income after ordinary business expenses.²

A foreign individual reports ECI on Form 1040-NR.³ A foreign corporation that owns the disregarded entity reports it on Form 1120-F at the 21% corporate rate under IRC Section 882.⁴

Whether activities rise to a US trade or business depends on how continuous and substantial they are. Many tax treaties layer on a higher threshold: business profits are US-taxable only if the foreign owner has a “permanent establishment” in the US, meaning a fixed place of business. Where a treaty applies and no permanent establishment exists, the business profits may escape US tax entirely.

FDAP Income

Passive US-source income — interest, dividends, rents, royalties, annuities — that is not connected to a US trade or business is FDAP income. The treatment is blunt: a flat 30% withholding on the gross amount, with no deductions.⁵ The US payer withholds before paying, and that withholding usually satisfies the tax, so no return is required. Treaties often reduce or eliminate the 30% rate for specific income types, and the owner claims the treaty rate by giving the payer Form W-8BEN.⁶

The classification matters. Rent is the clearest example. Active management of a commercial property produces ECI taxed on net income. Purely passive rental produces FDAP taxed on gross. On $100,000 of rent with $70,000 of expenses, ECI treatment taxes $30,000; FDAP treatment applies 30% to the full $100,000.

The Real Estate Election

Foreign owners of US real property who would otherwise face 30% gross withholding on rental income can elect under IRC Section 871(d) to treat that income as ECI. That opens up deductions for mortgage interest, property taxes, depreciation, and maintenance. The tradeoff: the owner has to file a US income tax return rather than relying on withholding at the source.

Form 5472: The Filing That Catches Owners Off Guard

Even a foreign-owned disregarded entity with no income and no tax due generally has to file. For information-reporting purposes only, the IRS treats it as a domestic corporation and requires Form 5472 attached to a pro forma Form 1120.⁷ The pro forma 1120 is not a real income tax return; it carries only the entity’s name, address, and EIN and exists to transmit the 5472.⁸

What Counts as a Reportable Transaction

Any reportable transaction between the LLC and its foreign owner or a related foreign party during the year triggers the filing. The scope is wider than most new owners expect. It covers sales, purchases, rents, royalties, and interest, but also capital contributions, distributions, loans in either direction, and amounts tied to forming or dissolving the entity.⁷ Wiring $5,000 into the LLC’s bank account at formation is reportable. So is paying an LLC bill from a personal account.

The deadline is the pro forma 1120’s due date, April 15 for calendar-year entities. A six-month extension is available on Form 7004.

The Penalty

Failure to file Form 5472 on time is $25,000 per form, per year.⁷ If the IRS notifies the entity and the failure continues more than 90 days, another $25,000 accrues for each 30-day period the failure persists. The penalty applies per related party, so an LLC with two related foreign parties can start at $50,000. The same penalty applies to failing to maintain adequate records. Many owners only learn about the requirement after the notice arrives.

Records to Keep

The entity must keep books and records sufficient to establish the accuracy of its filings, including documentation of every transaction with a related party. For information returns tied to international transactions, that means retaining them indefinitely in practice.⁷ At a minimum: bank statements, invoices, loan agreements, and a record of every transfer between the owner and the LLC.

Extra Layer for Corporate Foreign Owners: Branch Profits Tax

Foreign corporations owe an additional tax that foreign individuals do not. On top of regular income tax on ECI, a foreign corporation owes a branch profits tax equal to 30% of its “dividend equivalent amount,” which is roughly its after-tax US earnings adjusted for changes in the capital it keeps invested in the US business.⁹¹⁰ Reinvesting more in US operations shrinks the amount; pulling money out grows it.

Treaties often reduce the branch profits rate, commonly to the 5% rate that applies to dividends from a wholly owned US subsidiary to its foreign parent, and a handful of newer treaties reduce it to zero.¹¹ Claiming a treaty reduction requires filing Form 8833 with the Form 1120-F. Skipping Form 8833 triggers a separate $10,000 penalty.

Selling US Real Estate: FIRPTA Withholding

When a foreign-owned disregarded entity sells US real property, the buyer must withhold 15% of the sale price under FIRPTA and remit it to the IRS.¹² Because the LLC is disregarded, the sale is treated as a direct sale by the foreign owner.

Two narrow exceptions apply for residential property the buyer will use personally:

Sale price of $300,000 or less: no FIRPTA withholding, if the buyer is an individual who will use the property as a residence for at least half of the days it is occupied during each of the first two years after the sale.¹³
Sale price between $300,001 and $1,000,000: withholding drops to 10%, if the buyer intends to use the property as a residence.¹²

The withholding is a prepayment, not the final tax. The foreign owner has to file a US income tax return for the year of the sale, report the actual gain, and either claim a refund or pay any shortfall. Owners who expect withholding to far exceed the real tax can apply for a withholding certificate from the IRS before closing to reduce it.

Getting the LLC Set Up: EIN and W-8 Forms

The disregarded entity needs its own EIN. Foreign applicants without an SSN or ITIN cannot use the online application. The owner or an authorized representative calls the IRS international line at 267-941-1099 (not toll-free), Monday through Friday, 6:00 a.m. to 11:00 p.m. Eastern, and the EIN is assigned on the call. On Form SS-4, put “foreign” on line 7b for the responsible party’s SSN/ITIN, and on line 9a check “Other” and write “Foreign-owned U.S. disregarded entity—Form 5472.”¹⁴ If the IRS asks for a signed copy, mail or fax it within 24 hours.

A foreign individual who will file Form 1040-NR also needs an ITIN. A foreign corporate owner needs its own EIN to file Form 1120-F.

Two W-8 forms tell US payers how to withhold on payments to the foreign owner:

Form W-8BEN: for FDAP income like rents, interest, and royalties not connected to a US trade or business; certifies foreign status and claims any treaty rate.⁶
Form W-8ECI: for income that is effectively connected with a US trade or business; tells the payer not to withhold the 30% FDAP tax because the owner will report the income on a return and pay tax on the net at graduated rates.¹⁵

Give the payer the wrong form, or no form, and the default is usually 30% withholding on the gross payment. Recovering it requires filing a return and waiting on a refund.

Deadlines and Estimated Payments

The main federal deadlines for a calendar-year entity:

Form 1040-NR (foreign individual owner): April 15 if the owner received wages subject to US withholding; otherwise June 15.¹⁶
Form 1120-F (foreign corporate owner): generally the 15th day of the fourth month after year-end, so April 15 for calendar-year corporations.¹⁷
Pro forma Form 1120 with Form 5472: April 15, with extensions on Form 7004.⁷

Foreign individual owners with ECI need quarterly estimated payments if withholding will not cover the year’s tax. The schedule depends on whether they receive US wages:¹⁸

With US wages: April 15, June 15, September 15, and January 15 of the following year.
Without US wages: half by June 15, a quarter by September 15, and the last quarter by January 15.

Missed estimates trigger underpayment penalties and interest.

State Taxes Are a Separate Question

Federal disregarded status does not automatically control state treatment. Most states follow the federal classification, so the LLC itself owes no state income tax and income passes to the owner. But some states impose entity-level obligations regardless of federal classification: annual franchise taxes, gross receipts fees, or minimum taxes that apply even with no income. Amounts and structures vary. Check the state where the LLC is formed and any state where it operates. The foreign owner may also owe personal state income tax in any state where the LLC generates income.

Beneficial Ownership Reporting: Where Things Stand

The Corporate Transparency Act originally required most US entities, including single-member LLCs, to report their beneficial owners to FinCEN. An interim final rule published in March 2025 exempted all entities created in the United States from these reporting requirements.¹⁹ Under the current rules, a foreign-owned US LLC does not need to file a Beneficial Ownership Information report with FinCEN. That could change if FinCEN issues new final rules, so it is worth checking the current status before assuming the exemption still holds.

1
Internal Revenue Service. About Form 8832, Entity Classification Election
2
Internal Revenue Service. 2025 Instructions for Form 1040-NR
3
Internal Revenue Service. About Form 1040-NR, U.S. Nonresident Alien Income Tax Return
4
Office of the Law Revision Counsel. 26 USC 882 – Tax on Income of Foreign Corporations Connected With United States Business
5
Internal Revenue Service. Fixed, Determinable, Annual, or Periodical (FDAP) Income
6
Internal Revenue Service. Instructions for Form W-8BEN
7
Internal Revenue Service. Instructions for Form 5472
8
Internal Revenue Service. Instructions for Form 1120 (2025)
9
GovInfo. 26 USC 884 – Branch Profits Tax
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eCFR. 26 CFR 1.884-1 – Branch Profits Tax
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Internal Revenue Service. Branch Profits Tax Concepts
12
Office of the Law Revision Counsel. 26 USC 1445 – Withholding of Tax on Dispositions of United States Real Property Interests
13
Internal Revenue Service. Exceptions From FIRPTA Withholding
14
Internal Revenue Service. Instructions for Form SS-4
15
Internal Revenue Service. Form W-8ECI – Certificate of Foreign Persons Claim That Income Is Effectively Connected With the Conduct of a Trade or Business in the United States
16
Internal Revenue Service. Instructions for Form 1040-NR (2025)
17
Internal Revenue Service. Instructions for Form 1120-F
18
Internal Revenue Service. 2026 Form 1040-ES (NR) – U.S. Estimated Tax for Nonresident Alien Individuals
19
FinCEN. Beneficial Ownership Information Reporting