SSN is a unique identification number associated with US citizens and some non-Americans living in the country. It has been around since 1936, introduced just a year after the Social Security ...

EIN serves as a unique identifier for businesses, similar to an individual's SSN. Businesses, especially with employees or those needing to file certain taxes, must obtain an EIN. Applying for an EIN ...

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 ...

The phrase government-issued identification number is intentionally broad. Depending on the country and the situation, it may refer to a passport number, driver’s license number, social security ...