Social Security Number
What Is Social Security Number?
A Social Security Number (SSN) is a unique nine-digit number issued by the U.S. government to identify individuals for tax and Social Security purposes.
It is commonly used to track earnings, determine eligibility for benefits, and identify taxpayers.
Why It Matters
An SSN is one of the most important identifiers used in financial and government systems.
It is required for many activities, including:
- filing tax returns
- reporting wages
- receiving Social Security benefits
- opening financial accounts
How Social Security Numbers Work
When individuals earn income, employers report wages and taxes to the IRS using the employee’s SSN.
The number helps ensure that income and tax records are accurately associated with the correct individual.
The SSN is also used by government agencies to track eligibility for Social Security and Medicare benefits.
Example
When an employee receives a W-2 form, the employer includes the employee’s Social Security number so the IRS can match reported income with the individual’s tax return.
Social Security Number vs Employer Identification Number
- A Social Security number identifies individual taxpayers.
- An Employer Identification Number identifies businesses.
FAQs About Social Security Numbers
Who receives a Social Security number?
U.S. citizens and certain authorized residents may receive one.
Is a Social Security number required to file taxes?
Yes. Most taxpayers must provide a valid taxpayer identification number.
Can SSNs be used for financial identification?
Yes. Financial institutions often use SSNs to verify identity.
Related Terms
