Understanding Tax ID Numbers Definition and Purpose of Tax ID Numbers A tax ID number, also known as a TIN, is a unique ...

Explore what IRS Form SS-4 is, why it's important, and how to fill it out correctly to get your Employer Identification Number (EIN). IRS Form SS-4 is used to obtain an Employer Identification ...

or EIN Number - is a nine-digit number issued by the IRS to be used by self-employed individuals for certain tax or business purposes. If you're not sure if you already have one, you can call the ...

Employer Identification Number (EIN) Definition: A 9-digit number obtained by a business with paid employees from the IRS. If you're a sole proprietorship, your EIN is your social security number.

Sole proprietors who do not have an EIN are not currently eligible to set up a Business Tax Account. Instead, they can access their tax records by setting up an IRS individual Online Account.