ITIN vs SSN: What's the Difference? | Baron Payroll

In the realm of payroll and tax compliance, it's essential to understand the differences between an Individual Taxpayer Identification Number (ITIN) and a Social Security Number (SSN). Both identifiers serve different purposes and are issued under different circumstances, which can have significant implications for employers.

What is an ITIN?

Purpose: An ITIN is issued by the IRS to individuals who need a U.S. taxpayer identification number but are not eligible for an SSN. This typically includes non-resident aliens, their spouses, and dependents, as well as other individuals with foreign status who are required to file U.S. tax returns.

Key Features:

• Eligibility: ITINs are issued to those who are not eligible for an SSN, including undocumented aliens and non-resident aliens conducting business in the U.S.
• Usage: ITINs are used for tax filing purposes, opening bank accounts, and in some states, obtaining a driver's license. However, an ITIN does not confer work authorization or legal immigration status.

What is an SSN?

Purpose: An SSN is issued by the Social Security Administration (SSA) to U.S. citizens, permanent residents, and certain authorized noncitizens. It is primarily used for tracking earnings and determining eligibility for Social Security benefits, but it also plays a critical role in employment and accessing various services.

Key Features:

• Eligibility: SSNs are available to U.S. citizens, permanent residents, and noncitizens authorized to work in the U.S., such as those on work visas or with green cards.
• Usage: SSNs are required for legal employment in the U.S., receiving Social Security benefits, filing tax returns, and accessing many other government services. They are also essential for building a U.S. credit history.

Key Differences Between ITIN and SSN

Eligibility:

• ITIN: For individuals not eligible for an SSN, including undocumented and non-resident aliens.
• SSN: For U.S. citizens, permanent residents, and authorized noncitizens.

Work Authorization:

• ITIN: Does not provide legal authorization to work in the U.S.
• SSN: Confers legal work authorization and is required for employment.

Applications and Usage:

• ITIN: Primarily for tax purposes, with limited utility outside of this scope.
• SSN: Necessary for employment, accessing social services, and many financial activities.

Why Employers Need to Know the Difference

For employers, understanding the distinction between ITINs and SSNs is crucial for maintaining payroll compliance. Employees with SSNs are authorized to work in the U.S., while those with ITINs generally are not. Misclassification can lead to significant legal and financial penalties.

Action Steps:

• Verify each employee’s identification number during the onboarding process.
• Ensure proper documentation is maintained for tax reporting and compliance.
• Consult with payroll professionals to manage complex situations involving ITINs.

And that's it!

Understanding the differences between ITINs and SSNs is essential for ensuring payroll compliance and avoiding legal pitfalls. Employers should be diligent in verifying employee identification numbers and should seek expert guidance when necessary.

Wondering how much it costs to add your ITIN workers to your payroll?

Use our instant pricing calculator to get your instant estimate without talking to a salesperson.