An establishment code is a unique identifier assigned to a business or organization by the Internal Revenue Service (IRS). It is used to identify the business for tax purposes and to track its income and expenses. The establishment code is typically a 9-digit number, but it can be longer for some businesses.
There are several ways to check your establishment code. One way is to look at your IRS tax return. Your establishment code will be listed on the front of the return, just below your name and address. Another way to find your establishment code is to call the IRS at 800-829-1040. You will need to provide your Social Security number or Employer Identification Number (EIN) when you call.