If you're starting a business, hiring employees, or opening a business bank account, you'll need an Employer Identification Number (EIN) from the IRS. This unique nine-digit number functions as a business’s tax ID, similar to how a Social Security Number (SSN) works for individuals.

This guide will walk you through how to apply for an EIN and how to obtain an EIN Confirmation Letter (147C) if you lose your original IRS confirmation.

How to Apply for an EIN

The IRS provides four ways to apply for an EIN: online, fax, mail, or phone (for international applicants).

1. Apply Online (Fastest Method)

Processing Time: Immediate

The fastest and easiest way to obtain an EIN is through the IRS EIN Online Assistant.

Who Can Apply Online?

Steps to Apply:

💡 Pro Tip: Save and print the EIN confirmation immediately, as the IRS does not send another copy.

2. Apply by Fax

Processing Time: 4 business days

3. Apply by Mail

Processing Time: 4-6 weeks

Once processed, the IRS will send you an EIN Confirmation Letter by mail.

4. Apply by Phone (For International Applicants Only)

Processing Time: Immediate

If you are an international applicant without an SSN or ITIN, you must apply by phone.

Call the IRS at: +1 (267) 941-1099 (Monday–Friday, 6 AM–11 PM EST). Be ready to provide details from Form SS-4 over the phone.

The IRS will assign an EIN immediately, but you will need to wait for the confirmation letter by fax or mail.

How to Get an EIN Confirmation Letter (147C) If You Lost Yours

The EIN Confirmation Letter (CP 575) is issued when you first receive your EIN. If you lose it, the IRS will not reissue the CP 575, but you can request a replacement document called a 147C Letter.

What is a 147C Letter?The 147C Letter is an official IRS document confirming your EIN. It is often required when opening a business bank account or applying for credit.

Steps to Request a 147C EIN Confirmation Letter:

💡 Pro Tip: The IRS does not email the 147C Letter for security reasons. If you don’t have a fax machine, many office supply stores (like FedEx, UPS, or Staples) offer fax services.

Final Thoughts

Obtaining an EIN is a crucial step in setting up your business, and the IRS makes it relatively easy to apply. However, if you lose your EIN confirmation, requesting a 147C Letter is the only way to get an official replacement.

Need an EIN for your business? Apply today and keep your confirmation in a safe place to avoid delays in the future!