An Employer Identification Number is required before a foreign-owned single-member LLC can file Form 5472, even though the entity has no employees and no independent tax liability. Without a valid EIN, the return cannot be processed.
Why an EIN is required even for a "disregarded" entity
For income tax purposes the LLC is disregarded and treated as part of its owner, but for the Form 5472 information-reporting requirement it is treated as a separate taxpayer and must have its own EIN on file.
Applying without an SSN or ITIN
A foreign owner without a Social Security Number or ITIN cannot use the IRS's online EIN application, which requires one. Instead, the application is made on paper (Form SS-4) and submitted by mail or fax, with the "Foreign" box completed on the responsible-party section.
How long it takes
Processing an EIN application by fax typically takes about one to two weeks; by mail it can take considerably longer. Applying early — well ahead of the Form 5472 deadline — avoids a last-minute scramble.
Common mistakes on the application
Leaving the responsible-party SSN/ITIN field blank rather than writing "Foreign", inconsistent entity name formatting between the SS-4 and the LLC's formation documents, and missing signatures are the most frequent reasons an EIN application is rejected or delayed.
