What Is Social Security Number?

An in-depth explanation of Social Security Numbers (SSNs), their importance, history, and use in the United States as unique identifiers for individuals.

A Social Security Number (SSN) is a unique identifier assigned to U.S. citizens, permanent residents, and temporary (working) residents by the Social Security Administration (SSA). This nine-digit number is critical for numerous administrative and financial processes.

Structure of an SSN

An SSN is formatted as AAA-GG-SSSS, where:

• AAA represents the Area Number
• GG represents the Group Number
• SSSS represents the Serial Number

Purpose and Uses of SSNs

Social Security Numbers are primarily used for:

1. Tracking individuals’ earnings for social security benefits.
2. Filing tax returns and reporting income to the Internal Revenue Service (IRS).
3. Identifying individuals in various administrative processes (e.g., applying for loans, government services).

Historical Context

Creation of Social Security Numbers

The concept of SSNs was introduced with the Social Security Act of 1935, aimed at providing financial assistance to retirees based on their earnings history.

Evolution

Originally, SSNs were not intended to serve as a universal identifier. However, over time, they have become essential for multiple identification and authentication purposes.

Applicability

Social Security Benefits

SSNs are crucial for calculating and distributing social security benefits, including retirement, disability, and survivor benefits.

Taxation and Employment

SSNs are necessary for:

• Complying with the federal tax reporting requirements.
• Employers to report earnings to the SSA and IRS.
• Verification of employment eligibility through the E-Verify system.

Financial Services and Credit

Banks and financial institutions use SSNs to:

• Open new accounts.
• Approve loans and credit applications.
• Conduct background and credit checks.

Comparisons and Related Terms

Term	Definition
Employer Identification Number (EIN)	A unique identifier used by businesses and other entities, issued by the IRS.
Individual Taxpayer Identification Number (ITIN)	A tax processing number available for individuals who are not eligible for an SSN.
Social Security Card	The physical card given to individuals that displays their SSN.

FAQs

How Do I Apply for a Social Security Number?

To apply for an SSN, individuals must submit an application (Form SS-5) along with proof of age, identity, and citizenship or immigration status to the SSA.

Can I Change My Social Security Number?

Under certain circumstances, such as identity theft or threats of personal harm, individuals can apply for a change in their SSN.

What Should I Do If I Lose My Social Security Card?

Report a lost or stolen SSN card to the SSA and follow their procedures for obtaining a replacement card.

References

• Social Security Administration (SSA) - ssa.gov
• Internal Revenue Service (IRS) - irs.gov

Summary

A Social Security Number is a vital identification tool used across various sectors in the United States. Initially created to support the allocation of social security benefits, SSNs now play a crucial role in taxation, employment, and financial transactions. Understanding the importance and proper usage of your SSN is essential to safeguard personal identity and comply with federal regulations.