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Do I Need a Tax ID Number for My Business?

how do you get a tax identification number

An employer identification number (EIN), also called a tax ID number or taxpayer ID, is required for most business entities. As its name implies, this is the number used by the Internal Revenue Service (IRS) to identify businesses with respect to their tax obligations.

A tax ID number is not required if you operate a sole proprietorship or an LLC with no employees, in which case you would simply use your own Social Security Number as a tax ID. But you must obtain an EIN if you are a sole proprietor who files pension or excise tax returns. Even partnerships without non-partner employees are required to have tax ID numbers.

Additionally, there are certain instances where you will need to obtain a new EIN (See "Do You Need a New EIN? " from the IRS for more details):

  • Existing business is obtained (either through a purchase or inheritance) by someone who plans to run it as a sole proprietorship
  • Business changes from a sole proprietorship

    to a corporation or partnership

  • Business changes from a partnership to a corporation or sole proprietorship
  • Business changes from a corporation to a partnership or sole proprietorship
  • Individual owner dies, and business is taken over by the estate

You may apply for a tax ID online, via telephone, by fax, or through the mail.

  • Online : This the preferred method for obtaining a tax ID number, available for all business entities whose principal office or legal residence is in the U.S.
  • Telephone: Call the Business & Specialty Tax Line at (800) 829-4933 between 7:00 a.m. and 7:00 p.m. (local time), Monday through Friday. International applicants must call (267) 941-1099.
  • Fax: Complete Form SS-4 (PDF) and fax it to the appropriate IRS number. The IRS will send a return fax with your tax ID within four business days.
  • Mail: Complete Form SS-4 (PDF) and send it to the appropriate IRS address. Your EIN will be mailed to you.

Category: Insurance

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