Important for filing, W9

A good document to keep handy

A copy of the CP 575 letter, shown below, should be in your paperwork somewhere if you have had a company for some time and you have an EIN number. Note that on state taxes the number may be slightly different, as many states add their own digits to this number either before or after the IRS data.

Why business owners ask for this form:



Some of the most important quotes in the CP 575 letter are:

We assigned you an employer identification number

it is very important that you use your EIN and complete name and address exactly as shown. Any variation may cause a delay in processing, result in incorrect information in your account, or even cause you to be assigned more than one EIN.