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Individual Taxpayer Identification Number (ITIN)

  • Writer: undocumentedameric
    undocumentedameric
  • Jan 11
  • 3 min read

Updated: Jan 13

If you don’t have a Social Security Number (SSN), navigating U.S. tax laws can seem intimidating and confusing. However, there is a way to remain compliant with these laws without needing an SSN. The solution lies in obtaining an Individual Taxpayer Identification Number (ITIN).


For most individuals in the U.S., their taxpayer identification number (TIN) is their SSN. However, foreign persons who do not have and are not eligible for an SSN must use an ITIN instead. An ITIN allows individuals to file tax returns and fulfill their tax obligations even without an SSN.


Having an ITIN is essential for several reasons. First, it ensures compliance with U.S. tax laws, which is especially important if you are required to pay taxes. Failing to file taxes when required can have serious consequences, including being considered a negative factor in certain immigration applications in the future. For individuals seeking to adjust their immigration status, being compliant with tax laws by using an ITIN can demonstrate good moral character and responsibility.


Although the primary purpose of an ITIN is for tax filing, it has other benefits as well. For example, an ITIN can sometimes be used to open a bank account at certain financial institutions or to engage in financial transactions with businesses. One practical use of an ITIN is for individuals who work as independent contractors, freelancers, or vendors. When providing services to a business as a non-employee, the individual can use their ITIN to fill out a W-9 form to file their taxes. 


Who Might Need to File a W-9 Form with an ITIN?

  • Independent Contractors: Individuals who provide services to a business but are not on its payroll.

  • Freelancers: Professionals offering their skills on a project or gig basis.

  • Vendors: Businesses or individuals supplying goods or services.

  • Non-Employee Entities: Partnerships, sole proprietors, or other entities that are not employees but receive taxable income from a business.


It’s important to note that while an ITIN facilitates tax compliance and certain financial transactions, it does not provide work authorization or legal immigration status. Nevertheless, having an ITIN can be a helpful tool for those who need to fulfill their tax obligations, receive payment for non-employee services, or demonstrate financial responsibility while navigating immigration processes.

In summary, if you don’t have an SSN and are not eligible for one, applying for an ITIN is highly recommended. It allows you to file taxes, stay compliant with U.S. tax laws, and, in certain circumstances, receive payment for services. 


To obtain an Individual Taxpayer Identification Number (ITIN), you will need to fill out and submit Form W-7 to the IRS. This form is specifically designed for individuals who are not eligible for a Social Security Number (SSN) but need a taxpayer identification number to comply with U.S. tax laws.


Submitting Form W-7

Form W-7 can be submitted in several ways, depending on your preference and circumstances:

  1. Mail: You can mail the completed form, along with the required documents, to the IRS address listed in the Form W-7 instructions.

  2. In Person: Alternatively, you can submit Form W-7 in person by scheduling an appointment with:

    • Your local IRS Taxpayer Assistance Center (TAC): TACs provide assistance and ensure your documents are submitted correctly.

    • An Acceptance Agent (AA): An AA is authorized to help you complete and submit Form W-7.

    • A Certified Acceptance Agent (CAA): CAAs can verify your identity documents, reducing the need to send original documents to the IRS.


Required Documents

When submitting Form W-7, you must generally include the following:

  1. Your Federal Income Tax Return: 

  2. Proof of Identity and Foreign Nationality Status: You will need to provide original documents or certified copies issued by the issuing agency to verify your identity and foreign nationality. Acceptable documents include, but are not limited to:

    • Passports

    • National ID cards (must contain name, photograph, address, date of birth, and expiration date)

    • Birth certificates (for dependents under 18)

    • Foreign Military Identification Card

  3. Proof of Residence (for dependents): If you are claiming dependents, such as a spouse or children, on your tax return, you must also include proof of residence for each dependent unless they are a citizen of Canada or Mexico. 


Processing Times and Document Return

Your original documents will be mailed back to you along with the response to your ITIN application. The IRS will return them to the address provided on the envelope you used to mail the application. Processing times vary based on the time of year:

  • If you file during peak processing periods (January 15 – April 30), allow 9 to 11 weeks to receive your response.

  • If you file outside of peak periods, allow approximately 7 weeks for processing.

Key Tips

  • Ensure all documents are accurate and up to date to avoid processing delays.

  • If you are using a TAC, AA, or CAA, confirm their availability and make an appointment in advance.

  • If mailing your documents, it’s recommended to use a secure method to track your submission.

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