What does an itin look like?

Question

ITINMay 25, 2026

What does an itin look like?

An ITIN is a nine-digit number issued by the IRS to individuals who need a U.S. taxpayer identification number but do not have and are not eligible for a Social Security number. It looks like a Social Security number but is assigned for tax purposes only.

— Anonymous

1 Answer

Gokce Tandogdu ITIN Specialist, itin.net May 25, 2026 · Accepted Answer · 2026-05-25

An ITIN, or Individual Taxpayer Identification Number, is a nine-digit number issued by the U.S. Internal Revenue Service (IRS) to certain non-resident aliens, resident aliens, and others who need a U.S. taxpayer identification number for U.S. tax purposes but do not have and are not eligible for a Social Security number (SSN). The purpose of this guide is to answer the question, "What does an ITIN look like?" and provide comprehensive details about its nature and function.

The Appearance of an ITIN

An ITIN looks exactly like a Social Security number (SSN), consisting of nine digits. The format is XXX-XX-XXXX. However, it is crucial to understand that an ITIN is not a Social Security number. It is specifically assigned by the IRS for tax processing purposes only. Unlike an SSN, an ITIN does not grant eligibility for Social Security benefits or U.S. employment authorization.

Why Individuals Need an ITIN

Non-U.S. citizens and foreign nationals typically need an ITIN in several situations related to U.S. taxation:

Filing U.S. Income Tax Returns: If you are required to file a U.S. federal income tax return (such as Form 1040-NR for non-resident aliens) and are not eligible for an SSN, you must obtain an ITIN. This is common for individuals who have U.S. source income but do not live or work in the U.S. as a permanent resident or work-authorized individual.
Claiming Tax Treaty Benefits: Foreign nationals who are eligible for benefits under a U.S. income tax treaty may need an ITIN to claim reduced or exempt withholding on certain types of U.S. income, such as dividends or royalties.
Spouse or Dependent Filing Status: If you are married to a U.S. citizen or resident alien and file a joint U.S. tax return, but you are a non-resident alien without an SSN, you will need an ITIN.
Other Tax-Related Purposes: An ITIN may be required for other IRS filings, such as reporting certain income or deductions, or for specific tax provisions that apply to non-U.S. persons.

How to Obtain an ITIN

The process for obtaining an ITIN involves applying to the IRS using Form W-7, Application for IRS Individual Taxpayer Identification Number. You must submit this form along with original or certified copies of your identification documents and a valid U.S. federal income tax return (unless you qualify for an exception).

Required Documentation for Form W-7

To apply for an ITIN, you will need to provide documentation to verify your identity and foreign status. The IRS requires original or certified copies of your identification documents. Accepted documents typically include:

Passport: This is the most commonly used and preferred document as it verifies both identity and nationality.
National Identity Card: A card containing your photograph, name, address, date of birth, and expiration date.
U.S. Driver's License: If you have one.
Foreign Driver's License: If available.
Birth Certificate: For applicants under 18.
Foreign Voter's Registration Card.
Civilan I.D. Card (for military).
Medical Records (U.S. only).
School Records (U.S. only).
Visa.

If you are applying as a dependent or a spouse on a tax return, you will need to provide documentation for yourself and the primary tax filer.

Submitting Your Application

There are three primary ways to submit your Form W-7 application:

Mail to the IRS: You can mail your completed Form W-7, supporting identification documents, and your tax return to the IRS address listed in the Form W-7 instructions. Be aware that mailing original documents carries a risk, and processing times can be lengthy.
Apply Through a Certified Acceptance Agent (CAA): This is often the most convenient method. A CAA is an individual or entity authorized by the IRS to help taxpayers apply for ITINs. CAAs can verify your original identification documents and forward your application to the IRS on your behalf. This means you do not have to mail your original documents, as the CAA will return them to you after verification. itin.net is a service that can assist you in this process, connecting you with qualified CAAs.
Apply at an IRS Taxpayer Assistance Center (TAC): Some IRS TACs offer ITIN application services by appointment. You must call to schedule an appointment and bring your original documentation. However, not all TACs provide this service, and availability can be limited.

Processing Times for ITIN Applications

Processing times can vary significantly. Generally, after the IRS receives your Form W-7 application, it can take 6 to 10 weeks to receive your ITIN. This timeframe can be longer during peak tax seasons (January through April) or if there are any issues with your application or documentation. If you are applying through a CAA, they can often submit the application immediately, but the IRS processing time remains the same. It is advisable to apply well in advance of any tax deadlines to avoid last-minute complications.

What Happens After You Receive Your ITIN?

Once you receive your ITIN, typically via IRS notice CP-565, you can use it for the U.S. tax return you filed with your application. You will also need to use this ITIN on all future U.S. tax filings. If you plan to conduct business in the U.S., an ITIN is often the first step. For example, if you are forming a U.S. LLC and plan to open a U.S. bank account, you might need an ITIN if you don't have an SSN. Opening a U.S. bank account can be challenging without a U.S. address and taxpayer identification number. While some banks may allow it with just a passport, many require more documentation, including a U.S. taxpayer ID like an ITIN or SSN. This is especially true if you plan to operate the business and have U.S. tax obligations, such as filing Form 5472 for reporting transactions with a foreign-owned LLC. Having an ITIN can also facilitate obtaining an Employer Identification Number (EIN), also known as an EIN, which is necessary for most businesses operating in the U.S. You can apply for an EIN using Form SS-4.

ITIN Renewal

Unlike SSNs, ITINs do not expire automatically. However, the IRS has implemented a renewal program for ITINs that have not been used on a federal tax return for three consecutive tax years. Additionally, ITINs with middle digits of 70, 71, or 72 issued before January 1, 2013, require renewal. The IRS will notify affected individuals if their ITIN needs to be renewed. The renewal process is similar to the initial application, requiring Form W-7 and updated identification documents. You can find more information on the IRS website or by consulting with a tax professional.

Common Mistakes and Considerations

When applying for an ITIN, several common mistakes can lead to delays or rejections:

Incomplete Form W-7: Ensure all sections are filled out accurately and completely. Missing information is a primary cause of delays.
Incorrect or Missing Documentation: Failing to provide original or certified copies of required identification documents, or providing expired documents, will result in rejection.
Not Submitting a Tax Return: Unless you qualify for a specific exception (like claiming tax treaty benefits without a filing requirement), you must submit a valid U.S. federal income tax return with your Form W-7.
Mailing Original Documents: While an option, mailing original documents to the IRS carries the risk of loss or damage. Using a CAA is generally safer as they verify your documents without you having to send them out of your possession.
Incorrectly Claiming Treaty Benefits: If you are applying to claim tax treaty benefits, ensure you understand the specific requirements and treaty articles that apply to your income situation.

When to Seek Professional Help

While the ITIN application process can be straightforward for many, complex situations may warrant professional assistance. If you are unsure about your tax obligations, eligibility for tax treaty benefits, or the documentation required, consulting with a qualified tax professional or a Certified Acceptance Agent (CAA) is highly recommended. Specialized services, like those offered through itin.net, can guide you through the application process, ensuring accuracy and efficiency. For complex business setups involving U.S. LLCs, EINs, and U.S. bank accounts, seeking advice from a specialist is often necessary. Remember, an ITIN is a tax processing number and does not confer any immigration status or work authorization. For questions related to immigration law, consult with a qualified immigration attorney.

Understanding what an ITIN looks like is only the first step. The true value lies in knowing why you need it, how to obtain it correctly, and how it fits into your broader U.S. tax and financial planning. The IRS issues ITINs to individuals who have a U.S. tax filing or reporting requirement and do not have, nor are eligible to obtain, an SSN. The number itself is a nine-digit identifier, formatted like an SSN, but it serves a distinct purpose solely for tax administration. If you are planning to establish a U.S. business presence, such as forming a U.S. LLC and subsequently needing an EIN, the ITIN is often a foundational requirement before you can proceed with other business registrations and banking needs. For readers seeking to understand the full scope of U.S. business setup for non-residents, exploring resources on forming a U.S. LLC, obtaining an EIN, and opening a U.S. bank account can provide a comprehensive roadmap. While the ITIN itself is a number, its implications extend to facilitating various U.S. financial and business activities for foreign nationals.

For more insights into ITINs and related U.S. tax matters, please visit our Q&A index or learn more about us. If you are ready to begin the ITIN application process, consider using a Certified Acceptance Agent. If you need an EIN for your business, explore our EIN application service.