Responsible Party

The responsible party is the person the IRS holds out as the one who ultimately owns or controls a business and directs what happens to its money and assets. You name this person on line 7a of Form SS-4 when applying for the company's EIN. The IRS requires it to be a real human being, not another company, except in rare cases for government entities.

For a foreign-owned single-member LLC, the answer is simple: the responsible party is you, the foreign owner. If a foreign company owns the LLC, the responsible party is the individual who controls that company. You do not need a Social Security number or ITIN to be listed. On the SS-4, a foreign owner without a US tax number can write Foreign on line 7b, and the IRS will still issue the EIN.

This matters for your Form 5472 filings because the EIN record ties the LLC to a specific person. The IRS sends notices about the pro forma Form 1120 and Form 5472 package, due April 15, based on this record. If the person who controls the company changes, for example you sell the LLC to another founder, the IRS expects an update on Form 8822-B within 60 days.

Do not confuse the responsible party with a registered agent or a formation service. The agent in Wyoming who receives your legal mail for $50 a year is not the responsible party, and listing a service company on the SS-4 is incorrect. The IRS wants the actual owner on file. Getting this right keeps your EIN, your Form 5472 or Form 1065 filings, and your penalty exposure all cleanly connected to the right person.