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How to file the Pro forma Form 1120 for a foreign-owned U.S. LLC (US federal)

A foreign-owned single-member LLC files Form 5472 attached to a pro forma Form 1120 with only its name, address, EIN and item E, and "Foreign-owned U.S. DE" across the top; it is faxed or mailed, never e-filed.

Internal Revenue ServiceUS federalUpdated October 21, 2026

Agency
Internal Revenue Service
Where it applies
US federal
How it's filed
Paper form, faxed or mailed
Fee
FreeNo fee. The penalty for not filing Form 5472 starts at $25,000.
Renewal
Every year, by the 15th day of the 4th month after the tax year ends.

The form, line by line

LineWhat goes there
TopIs this the pro forma Form 1120 a foreign-owned U.S. disregarded entity files with Form 5472?Yes / No
NameName
AddressAddress: number and street, city, state or province, ZIP or postal code, and country if abroad
BEmployer identification number
CDate incorporated (date the entity was formed)
DTotal assets
ECheck ifNone / Initial return / Final return / Name change / Address change
Sign HereTitle of the officer signing

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