Q:

How can someone register for a federal tax ID number?

A:

Quick Answer

You can apply for a Federal Tax ID number at IRS.gov. Use the EIN Assistant to apply for a tax ID number online to receive it instantly. If you already have a tax ID number and would like to request another, you must apply by mail, fax or phone.

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Full Answer

Tax identification numbers, also called employer identification numbers, are issued by the IRS to identify certain business entities. These numbers are required for filing all tax documentation, including withholding certificates, notices and annual tax returns, the IRS explains. Some trusts and estates need EINs for filing purposes.

To obtain an EIN, a business entity's owner, principal officer, partner or authorized third-party nominee can apply by mail, fax, phone or online. When filing for an EIN by fax or mail, applications must complete the Application for Employer Identification Number, form SS-4, the IRS notes.

If submitting your application online, an official IRS document appears on the screen after your number has been generated, TurboTax explains. You should immediately save this document and print one for your records should you ever misplace your EIN. If you do misplace your number, you can call the IRS Business and Speciality Tax Line, provide some information to prove your identity, and retrieve your number.

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