Your UK Limited company has ventured out to the Wild West to do business and you quickly find a US bank account is required. The idea of opening a US account seems alluring when you think of the potential business that 400 million consumers can bring. So you jump on the band wagon and file a Form SS-4 to sign up for a US tax identification number, referred to as EIN (employer identification number).
Then it dawns on you: “What did I just do? Is my company now in the Internal Revenue Services (IRS) system?”
Short answer: YES.