- Social Security Number (SSN)
What is a Social Security Number?
A Social Security number (SSN) is a unique identifier issued by the Social Security Administration. You need an SSN to work, and it’s used to determine your eligibility for Social Security benefits and certain government services.
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- Employee Identification Number (EIN)
What Is a Tax Identification Number (TIN)?
A Tax Identification Number (TIN) is a nine-digit number used as a tracking number by the Internal Revenue Service (IRS). It is required information on all tax returns filed with the IRS. All U.S. tax identification numbers (TIN) or tax I.D. numbers are issued directly by the IRS except Social Security numbers (SSNs), which are issued by the Social Security Administration (SSA).