Each taxpayer in the U.S. needs to have a unique nine-digit number that can identify them to the IRS. Many Americans use their Social Security number, or SSN, to confirm their identity on tax returns ...

A Tax Identification Number (TIN) is required for all entities to file tax returns. Individuals use their Social Security Number (SSN) as their TIN for personal taxes. Businesses need unique TINs, ...

An employee identification number (EIN) is a type of of tax identification number (TIN). There are many tax identification numbers including Social Security numbers, Individual Tax Identification ...

An Individual Taxpayer Identification Number is a nine-digit number the IRS uses to process taxes and administer tax laws. The agency issues them only to certain nonresident and resident aliens, as ...

Nonresidents who receive stipends from a scholarship or fellowship must apply for an ITIN, if they do not have or are not eligible to obtain a SSN (see Social Security Administration website for ...

An employer identification number (EIN) is issued by the Internal Revenue Service (IRS) to identify a business for tax administration purposes. It’s also used to complete some core business tasks, ...

Forbes contributors publish independent expert analyses and insights. Darren Case is an Arizona attorney covering tax and estate planning. As we come close to the end of taxable year in conjunction ...

Learn when you can refuse to give your Social Security number and protect from identity theft. Not every SSN request is mandatory – know your rights.

A noncitizen without a Social Security number needs an ID number to claim tax refunds. Individual taxpayer identification numbers were for taxes only, but driver's licenses were issued. Applicants ...