Getting an EIN as a Foreign Founder: What You Need to Know

If you're forming a US company from outside the United States, getting an EIN is your first real interaction with the IRS. It can feel daunting, but the process is straightforward once you know the steps.

The challenge for foreign founders

US citizens and residents can apply for an EIN online in minutes. But the IRS online application requires a valid SSN or ITIN — which most foreign founders don't have yet.

Your options

Option 1: Apply by fax. Fill out Form SS-4, fax it to the IRS at (855) 641-6935. You'll receive your EIN by fax within 4 business days. This is the most popular method for international founders.

Option 2: Apply by phone. Call the IRS Business & Specialty Tax Line at (267) 941-1099, Monday through Friday, 6am to 11pm Eastern Time. An agent will walk you through the application and issue your EIN immediately. Be prepared for long hold times.

Option 3: Apply by mail. Send your completed SS-4 to the IRS. This takes 4-6 weeks. Not recommended unless you have plenty of time.

The responsible party question

The IRS requires a "responsible party" with a US tax ID (SSN, ITIN, or EIN). As a foreign founder, you have two paths:

• •Get an ITIN first. File Form W-7 to get an Individual Taxpayer Identification Number. This takes 7-11 weeks by mail, or you can use a Certifying Acceptance Agent to speed it up.

• •Use a US-based responsible party. If you have a US partner, officer, or authorized representative with an SSN, they can be listed as the responsible party.

After you get your EIN

With your EIN in hand, you can:

• •Open a US business bank account
• •File your annual tax returns
• •Apply for business licenses
• •Hire employees or contractors

Pro tip

Keep your EIN confirmation letter (CP 575) safe. Banks and other institutions will ask for it. If you lose it, you'll need to call the IRS to get a verification letter (147C letter).