Understanding the intricacies of the U.S. tax system can be daunting, especially for non-resident aliens trying to navigate their tax obligations. One essential element for many in this situation is obtaining an Individual Taxpayer Identification Number (ITIN).
Whether you’re a foreign national, a student, or a resident’s dependent, an ITIN is necessary for filing federal taxes if you’re ineligible for a Social Security Number (SSN). Let’s delve into the requirements and steps to obtain this crucial number.

What is an ITIN and why do you need it?
An ITIN, or Individual Taxpayer Identification Number, is a tax processing number issued by the Internal Revenue Service (IRS). It’s a nine-digit number that always begins with the number 9 and is used to ensure that individuals—including non-resident aliens—comply with U.S. tax laws, and to provide a way to efficiently process and account for tax returns and payments.
Non-resident aliens require an ITIN to file their tax returns, pay taxes, and claim refunds. Although it doesn’t provide legal immigration status or the right to work, an ITIN is a critical component of tax compliance for those without an SSN.
Moreover, an ITIN is also necessary for opening a U.S. bank account, securing a loan, and sometimes for obtaining state identification. For those who are a part of the U.S. financial system but cannot get an SSN, an ITIN becomes indispensable.
Steps to apply for an ITIN from abroad
Applying for an ITIN from outside the U.S. involves a few specific steps. You’ll need to complete Form W-7, the IRS application for an ITIN, and provide proof of your foreign status and true identity through various documents.
It’s essential to fill out the form correctly and send it alongside the tax return to which it pertains. Applications can be submitted via mail or through a Certified Acceptance Agent (CAA) overseas. The CAA can help verify your documents and ensure that your application is complete.
Once submitted, anticipate a few weeks for the IRS to process the application. During peak tax season, this can take longer, so it’s wise to apply well in advance of any tax deadlines.
Remember to use your ITIN on all U.S. tax documents going forward and be sure to renew it if it expires, as ITINs do have expiration dates.
Required documents for ITIN application
When you apply for an ITIN, you must provide certain documents to prove your identity and foreign status. Original documents or certified copies from the issuing agency are acceptable.
- Passport (which is the only stand-alone document acceptable)
- U.S. Driver’s License
- Civil birth certificate (required for dependents under 18 years of age)
- Foreign driver’s license
- U.S. state identification card
Additional documents may be accepted by the IRS, and it’s important to check the most current list provided in the W-7 instructions. Each document must be current and contain an expiration date. The IRS does not accept notarized or apostilled copies of documents, so ensure you have legitimate certifications.
How to submit form W-7 for your ITIN
To submit Form W-7, follow these guidelines:
- Complete the form in English and follow the specific IRS instructions for ITIN applications.
- Attach your tax return to the W-7 form unless you qualify for an exception.
- Include original documentation or certified copies to verify identity and foreign status.
- Mail the package to the IRS, or present it at an IRS walk-in office, or process it through a Certifying Acceptance Agent.
If you’re unsure or need assistance, contacting a tax professional or a Certifying Acceptance Agent can be beneficial. Remember, accuracy in your application is crucial to avoid delays.
Checking the status of your ITIN application
After submitting your ITIN application, you’ll naturally be eager to know the status. Generally, it takes about seven weeks for the IRS to issue an ITIN if the application is complete and no additional information is needed. You can check the status of your application by calling the IRS’s ITIN Operation’s hotline.
If there are any problems or if additional information is needed, the IRS will send you a letter. Be sure to respond promptly to any requests from the IRS to avoid further delays in the processing of your application.
FAQs about ITIN for non-resident aliens
There are numerous questions around the topic of ITINs for non-resident aliens. Below are some of the most frequently asked questions and their answers to aid you further in understanding this important identifier.
Related questions on ITIN for non-resident aliens
How do I get an ITIN number for a non-resident in the US?
To get an ITIN number, a non-resident in the U.S. must complete and submit IRS Form W-7. This process includes providing the required documentation to prove identity and foreign status. It’s possible to apply by mail, in person at an IRS Taxpayer Assistance Center, or through a Certifying Acceptance Agent.
Remember that applying for an ITIN does not change your immigration status or your right to work in the U.S., but it does allow you to comply with U.S. tax laws.
Can someone with an ITIN number work in the US?
An ITIN is not a work permit. It is solely for tax reporting purposes. Having an ITIN does not provide authorization to work in the U.S. or provide eligibility for Social Security benefits or the Earned Income Tax Credit.
However, individuals who are legally authorized to work in the U.S. should not use an ITIN but instead apply for a Social Security Number.
Can I file a US tax return without an ITIN?
Individuals who are required to file a U.S. tax return but do not have an SSN must apply for an ITIN to fulfill their filing obligations. Without an ITIN or SSN, it is not possible to file a proper tax return, which could result in penalties.
Applying for an ITIN should be done as soon as you are ready to file your federal tax return to avoid any potential late filing penalties.
Is ITIN the same as SSN?
No, an ITIN and SSN are not the same. An ITIN is a tax identification number for non-residents who cannot obtain an SSN but still have tax obligations. An SSN is a social security number issued to U.S. citizens and authorized non-citizen residents. It is necessary for work, social security benefits, and other government services.
If you’re looking for more detailed information on the ITIN application process, the following YouTube video provides valuable insights:
Understanding the differences and the specific uses of an ITIN and SSN is crucial for non-residents living or conducting financial activities in the U.S. If this is your situation, obtaining an ITIN is a necessary step to ensure you meet your tax obligations and avoid issues with the IRS.