A 147c letter is a letter from the IRS that confirms your Employer Identification Number (EIN). It’s used to verify your business name or entity type and helps prevent identity theft.

Requesting a 147c letter is done by contacting the IRS Business and Specialty Tax line at 1-800-829-4933. You will need to answer a few questions for security reasons. After that you will receive a letter in form 147c from the Tax Service by mail or fax.

What is a 147c letter from the IRS? This is a letter that gives you information about your EIN. But it can also be received in another way:

• You can contact the financial institution where you opened an account or took out a loan using the EIN. 
• If you have ever filed taxes or registered your business with the state, then it is likely that they have already issued an EIN (Employer Identification Number) to you and included it in any paperwork they sent out.