I'm a NON US resident but I have a SSN and I formed an LLC in Wyoming. Do I have to apply for EIN or I can use my SSN? I am the only member of an LLC.

2 Answers 2


You need to register for an EIN from the IRS before you start cutting paychecks and withholding taxes for your employees. In the US there is a layer of Federal requirements on top of the state-level requirements, and this is one of those cases: there’s not going to be a Wyoming-specific EIN but instead an EIN from the IRS. See irs.gov for the online form.

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    Does it change the situation that it's a single member LLC?
    – milanb
    Jun 1, 2020 at 0:59

[I]f the SMLLC doesn't have any employees, the business owner can use his or her social security number rather than obtain a different tax identification number.

At the same time, the article says that you must always treat the single-member LLC as its own entity, not as an alter ego. I ask, wouldn't using your SSN for the LLC violate that principle?

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