For foreign-owned US single-member LLCs

Form 1120 for a Disregarded Entity (Foreign Owner)

A US LLC owned by a single non-US person is a "disregarded entity" — meaning the IRS treats it as if it doesn't exist for income tax purposes. So why does it file Form 1120? Because Treasury Regulation § 1.6038A-1 requires Form 5472 to be attached to a tax return, and a pro forma Form 1120 is the IRS-specified attachment vehicle. This is the complete explanation, the regulation's history, what the filing looks like, and how to avoid the common pitfalls.

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What is a disregarded entity?#

A disregarded entity (DE) is a business entity (usually an LLC) that has just one owner and hasn't elected to be taxed as a corporation. The IRS "disregards" the entity for federal income tax purposes — meaning income and deductions flow through to the owner directly, as if the entity didn't exist. For a US LLC owned by one non-US person, the LLC is automatically a disregarded entity unless you affirmatively elect C-corp or S-corp taxation by filing Form 8832 (most foreign owners shouldn't do this). The disregarded-entity status means: • The LLC has no separate US income tax liability. • Income/losses flow to the owner's personal tax situation. • For a foreign owner with no US trade or business and no US-source income, this typically means $0 in US federal income tax. • The LLC still legally exists at the state level (Wyoming, Delaware, etc.) as a separate entity for liability protection.

Why a disregarded entity files Form 1120#

Disregarded entities don't normally file Form 1120 — that's a corporate income tax return for actual corporations. The exception is foreign-owned single-member LLCs treated as DEs. Since 2017, Treasury Regulation § 1.6038A-1 says these entities are treated as separate domestic corporations "solely for purposes of" Form 5472 reporting under IRC § 6038A. So they file Form 5472 — and the only way the IRS accepts Form 5472 is as an attachment to Form 1120. The 1120 is filed "pro forma" — mostly empty — as a procedural cover sheet. Filling it in fully would incorrectly suggest your LLC is a real C-corp. The procedural status (file 1120 as the envelope for 5472) does not change the substantive tax status (LLC remains disregarded, owes no corporate tax).

What is the regulatory history of Form 5472?#

Before 2017, foreign-owned single-member US LLCs weren't required to file Form 5472. The IRS treated them purely as disregarded entities with no federal filing obligation. As a result, foreign owners could form a US LLC, move large amounts of money through it, and never disclose anything to the US government. This became a known transparency loophole — non-US persons could use US LLCs to obscure beneficial ownership for tax avoidance, money laundering, or sanctions evasion. In December 2016, the IRS issued final regulations under § 1.6038A-1 extending §6038A reporting to foreign-owned domestic disregarded entities, effective for tax years beginning January 1, 2017. The regulation specifically created the "pro forma 1120 as attachment vehicle" approach because there was no existing form for disclosure-only filings. Since then, every foreign-owned single-member US LLC has had to file Form 5472 + pro forma 1120 annually. Penalty: $25,000 per missed form per year under IRC § 6038A(d).

What does the pro forma 1120 look like?#

Header section (page 1 top): • "Foreign-Owned U.S. DE" stamped or written across the top margin. • Entity name, EIN, US business address. • Date of incorporation. • Item D — total assets at year-end. • Item E — Initial return / Final return / blank. • Signature block at the bottom: signed in pen. Body (pages 2-4): • Empty. No income, no deductions, no tax calculation, no schedules. Schedule L: • Only line 15, column (d) — total assets at year-end. Must match Item D. All other schedules: • Blank. That's the entire pro forma 1120 filing. Then Form 5472 + Part V supporting statement attached behind it.

What 'solely for purposes of' means in practice#

The regulation's phrasing — "solely for purposes of Section 6038A reporting" — is important. It limits the corporate treatment to one narrow purpose: making the LLC file Form 5472. It does NOT: • Make the LLC subject to US corporate income tax. • Change the LLC's disregarded status for other tax purposes. • Require the LLC to file estimated tax payments. • Create employee withholding obligations. • Require quarterly returns. • Make the LLC liable for accumulated earnings tax or personal holding company tax. • Trigger 1120-W estimated tax requirements. The LLC is treated as a corporation ONLY to satisfy the procedural requirement that Form 5472 attach to a tax return. For everything else (income tax liability, owner's personal taxation, state tax treatment), the LLC stays a disregarded entity.

Where do you file Form 5472 and pro forma 1120?#

Foreign-owned DE filings go ONLY to the IRS Ogden PIN Unit: • Fax: +1-855-887-7737 (preferred — fast, with a timestamped transmission receipt as proof of filing). • Mail: Internal Revenue Service, 1973 Rulon White Blvd, M/S 6112, Attn: PIN Unit, Ogden, UT 84201 (use certified mail with return receipt for proof). Do NOT send to the regular Form 1120 processing addresses listed in the standard 1120 instructions. Those addresses are for real corporate returns and your pro forma filing will be misrouted or treated as a real corporate filing — which can trigger collection notices and tax liability for tax you don't actually owe. The Ogden PIN Unit is the dedicated team within IRS Ogden that handles foreign-owned DE filings. The "Foreign-Owned U.S. DE" stamp on the 1120 is what tells them to route to this team.

What if you elect C-corp taxation?#

If you actively elect C-corp taxation by filing Form 8832 (Entity Classification Election), your LLC is no longer a disregarded entity. It becomes a real US corporation that owes corporate income tax (currently 21% federal flat rate) on its worldwide income — including all foreign-source revenue. For most foreign owners, this is a bad idea: • You'd owe US tax on profits earned abroad selling to non-US customers. • You'd need to file full Form 1120 (not pro forma) with income, deductions, and tax calculation. • Distributions to you would be dividends — potentially subject to 30% US withholding (or treaty rate). • Your US tax bill could go from $0 to substantial. Keep the default disregarded entity classification unless you've consulted a US tax professional about a specific reason to elect C-corp status (e.g. you're optimizing for a future US sale of the entity).

What if you elect S-corp taxation?#

Don't. You can't. S-corporations require all owners to be US persons (US citizens, green-card holders, US tax residents). A foreign-person owner disqualifies S-corp eligibility. If you (a foreign person) try to elect S-corp status for your US LLC, the IRS will reject the election. If you somehow filed S-corp returns despite ineligibility, the IRS would unwind it and assess back taxes. Ignore S-corp paths entirely if you're a foreign owner. Disregarded entity (default) or C-corp election (Form 8832) are your only legitimate options.

What are common confusions about these forms?#

"My LLC is disregarded, so I don't file anything?" — Wrong. Disregarded means no separate income tax computation; it does NOT mean no filings. Foreign-owned DEs still file Form 5472 + pro forma 1120 annually. "If I file Form 1120, am I a corporation now?" — No. Pro forma 1120 is a procedural vehicle. Your LLC stays disregarded. "My CPA says I need a real Form 1120 with income." — Get a second opinion. Most CPAs see foreign-owned DE filings once or twice in their career. A full 1120 is wrong unless you've elected C-corp via Form 8832. "Can I just file Form 5472 by itself?" — No. The IRS requires it to be attached to a tax return. Pro forma 1120 is that attachment. "My LLC had no transactions — am I still disregarded?" — Yes, the disregarded status is independent of activity. Whether you file Form 5472 depends on whether you had reportable transactions, but the entity classification doesn't change.

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Frequently asked questions

How do I know if my LLC is a disregarded entity?
If your LLC has one owner and you've never filed Form 8832 to elect C-corp or S-corp taxation, it's a disregarded entity by default. Check your IRS correspondence — none of it should reference 1120-S or formal C-corp status.
What if my LLC has more than one owner?
If a US LLC has multiple owners, it's a partnership by default — not a disregarded entity. Multi-member LLCs file Form 1065, not 1120, and the Form 5472 rules apply differently. Our service handles single-member only.
Does the disregarded entity have to file a US tax return?
The disregarded entity doesn't compute its own income tax (it's disregarded for tax computation), but it must file pro forma Form 1120 + Form 5472 as an information return if it had any reportable transactions. So yes, there's still a filing — just not a real tax-paying one.
Does the §6038A regulation cover foreign owners or all owners?
It covers any 25%+ foreign ownership of a US corporation OR foreign ownership of a US disregarded single-member LLC. US-owned single-member LLCs are NOT subject to §6038A reporting — only foreign-owned ones since 2017.
Can I file Form 5472 without pro forma 1120 if I qualify some exception?
No. There's no exception that allows standalone Form 5472 filing for foreign-owned DEs. The pro forma 1120 attachment is mandatory.
What's the difference between a disregarded entity and a partnership?
Disregarded entity = single-owner LLC, treated as if it doesn't exist for income tax. Partnership = multi-owner LLC, files Form 1065 to allocate income to partners. Adding a second member changes the classification.
If I add a partner to my disregarded LLC, what happens?
It becomes a partnership for tax purposes (no longer disregarded). You'd file Form 1065 instead of pro forma 1120 + Form 5472. The change is automatic — no election needed. Talk to a CPA before adding members; the tax implications are significant.
Are LLCs the only disregarded entities?
No. Other entities can be disregarded too (qualified subchapter S subsidiaries, certain grantor trusts), but for foreign-owner purposes the typical disregarded entity is a single-member LLC.
Does my LLC need a separate EIN if it's disregarded?
Yes. Even though it's disregarded for income tax, it still needs an EIN to open bank accounts, file Form 5472, hire contractors with 1099 reporting, etc. The EIN is required for the entity even when the entity is disregarded.
If I'm disregarded, can I just put my LLC's income on my personal return?
For US owners, yes — they'd file Schedule C on Form 1040. For non-US owners, the LLC's income flows to you, but you don't file a US personal return unless you have US-source income personally. Most foreign owners don't, and the only US filing they make is the pro forma 1120 + Form 5472 for the LLC.

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