A Social Security number of employer identification number that serves as the taxpayer's account number with the IRS Taxpayer Identification Number (TIN): A Social Security number or employer identification number that serves as the taxpayer's account number with IRS and Social Security.

Individuals who are not eligible for a social Security number (routinely issued only to U.S. citizens, U.S. permanent residents, and non-immigrants authorized to work) receive from the IRS a unique nine-digit number for tax purposes.

A social security number or employer identification number, which serves as the taxpayer's account number with the IRS.

The number provided by Citrus Council that allows banks to open accounts for troops.

A number represented by nine-digit number with no alphabetic characters, that enables interest and dividend reporting for tax compliance and information reporting requirements by banks and other institutions

In the case of an individual, the Social Security number. In the case of a business (even an individual in business), the employer identification number.

See "Federal Tax Identification Number."

The policyowner's Social Security number. The insurer must have a certified TIN to avoid backup withholding when there is taxable gain.

Individuals who are not eligible for a Social Security number must apply for this unique 9 digit number from the IRS. It is used solely for tax purposes.

Also known as a TIN, a taxpayer identification number is a tax processing number given to resident and non-resident aliens (and their relatives and dependents), who cannot get a social security number (SSN). The number is formatted like an SSN, and is used only for federal income tax purposes.

A Social Security number (SSN), Employer Identification number (EIN) or Individual Taxpayer Identifying number (ITIN).