Applying for ITIN and EIN: How to Become Visible in the US Tax System as an EU Citizen

Meta: Complete guide: Applying for ITIN and EIN as an EU citizen. Step-by-step process, costs, timeline, and common mistakes.

If you're an EU citizen wanting access to US capital with a US business structure, there's no way around it: you need an ITIN and an EIN. These two tax identification numbers aren't just bureaucratic requirements – they're the foundation for bank accounts, credit lines, and real capital access in the US. Many European entrepreneurs underestimate their importance or make costly mistakes during the application process. In this guide, you'll learn how to efficiently apply for both numbers and which pitfalls to avoid.

What is an ITIN and Why Do You Need It?

The Individual Taxpayer Identification Number (ITIN) is a 9-digit identification number issued by the US Internal Revenue Service (IRS) to non-US citizens who earn taxable income in the US. It works similarly to a US Social Security Number (SSN), but it's specifically issued for tax purposes to foreign nationals.

As an EU Citizen, You Need an ITIN For:

Opening US Bank Accounts (Most Banks Require an ITIN or SSN)

Applying for US Business Loans and Credit Lines

Filing US Tax Returns (Form 1040-NR or 1040)

Compliance and KYC Requirements of American Financial Institutions

Building US Business Credit

What is an EIN and Why is it Essential?

The Employer Identification Number (EIN) is a unique 9-digit business identification number issued by the IRS for companies, LLCs, partnerships, and other business structures. It's the US equivalent of a German tax number or business registration number.

For Your US LLC, You Need an EIN To:

Open a US Business Bank Account in the LLC's Name

Hire Employees or Contractors

Build a Separate Business Credit History

Tax Compliance (Form 1120-C, 1120-S, or 1065)

Obtain Credit Lines and Financing Offers

The critical difference: The ITIN is personal (for you as an individual), while the EIN is operational (for your LLC). You typically need both.

The ITIN Application Process: Step by Step

The ITIN is applied for using Form W-7, which you submit to the IRS. Here's the practical process:

Complete Form W-7 (Available on irs.gov)

Obtain proof of identity: valid passport, driver's license, or national ID (certified copy)

Proof of Address: Bank statement, mortgage statement, or similar

Submit Application by Mail or Through a Certified Acceptance Agent (CAA)

Most EU entrepreneurs use a CAA – these are specialized law firms or accountants accredited by the IRS. The advantage: you can have your documents notarized and accelerate the process. Without a CAA, processing takes 11-16 weeks; with a CAA, often only 4-6 weeks.

Cost: The ITIN application itself is free, but for a CAA service, expect EUR 150-400. This is a worthwhile investment to save months.

The EIN Application Process: Surprisingly Simple

Good news: The EIN is much faster. You apply for it using Form SS-4 with the IRS:

Complete Form SS-4 Online (on irs.gov or through an ITIN agent)

If You've Already Founded an LLC: Obtain Your LLC Articles of Organization

Submit Application by Phone, Online, or Mail

The EIN is often approved immediately or within a few days – sometimes on the same day if you call. The major advantage: you can apply for the EIN BEFORE you have the ITIN, and you should. Many entrepreneurs start with the EIN and then apply for the ITIN.

Cost: Completely Free.

Common Mistakes in ITIN Applications

Several European entrepreneurs report delayed or rejected applications. The most common mistakes:

Wrong or incomplete address: Use your real, verifiable address – not a virtual office or mailbox. Banks and the IRS will verify this later.

Missing or poor documentation: Submit certified original copies, not simple photocopies.

Invalid proof of identity: A German ID card is acceptable, but it must be valid and certified.

W-7 Form filled out incorrectly: Particularly the 'Reason for applying' and 'Type of US income' fields confuse many. Consult a CAA.

Timeline and Cost Overview

Here's a Realistic Overview of Timing and Investments:

ITIN (with CAA): 4-8 Weeks, Approx. EUR 150-400

ITIN (without CAA): 11-16 Weeks, Free

EIN: 1-5 Days, Free

Total Timeline for Complete Setup: 6-12 Weeks

Tip: Start with the EIN (free, fast) and submit your ITIN application through a CAA in parallel. This way, your LLC can already open a bank account while you wait for the ITIN.

Why Both Numbers Are Essential for US Funding

US banks and lenders require extensive KYC (Know Your Customer) and AML compliance before releasing funds. Without an ITIN, you cannot:

Open a Real US Business Account (Only pre-approval accounts with stricter limits)

Apply for Credit or Credit Lines

Build a US Business Credit History

Appear Credible to Investors or Lenders

With an ITIN and EIN, On the Other Hand:

Access Opens to Business Credit Lines of USD 10,000-200,000

You Can Reach US Venture Capital and Loan Funds

Build Real US Credit History

Be Taken Seriously by Established Financial Institutions

In short: The ITIN and EIN are not optional. They're your ticket into the US capital markets ecosystem.

Next Steps After Approval

Once You Have Your ITIN and EIN:

Open a US Business Account for Your LLC (at Chase, Bank of America, Wise, or Mercury)

Apply for Your First Business Credit Card to Build Credit History

Register with Business Credit Reporting Agencies (Dun & Bradstreet, Experian Business)

Plan Your Financing Strategy with US Lenders

Building a second economic identity in the US is a marathon, not a 100-meter dash. But with ITIN and EIN, you've laid a solid foundation.

Free Strategy Consultation with CANVENA

Schedule a free strategy consultation with CANVENA and learn how to build your economic identity in the US and gain access to US capital.