An Individual Taxpayer Identification Number (ITIN) is essential for non-U.S. residents or individuals without a Social Security Number (SSN) who need to file taxes or open a U.S. bank account. This nine-digit number helps taxpayers comply with U.S. tax laws. If you’re looking to apply for an ITIN, you might be wondering where to begin. Fortunately, the process is fairly straightforward, and we’re here to guide you through the essential steps. Read more…
What is an ITIN?
Before we dive into the steps to obtain your ITIN, it’s important to understand what an ITIN is and why you might need it. An ITIN is used primarily for tax reporting purposes. It is issued by the Internal Revenue Service (IRS) to individuals who need to file tax returns in the U.S. but are not eligible for a Social Security Number. While the ITIN is used for tax reporting, it doesn’t provide work authorization or eligibility for Social Security benefits. Here are some common reasons you might need an ITIN:
- Filing U.S. tax returns
- Opening a U.S. bank account
- Applying for a mortgage
- Health insurance through the Affordable Care Act
- Reporting interest income to the IRS
Who Needs an ITIN?
There are several categories of individuals who need an ITIN. These include:
- Non-resident aliens: Foreign individuals who are required to file a U.S. tax return.
- U.S. resident aliens: People who have lived in the U.S. for a certain period and need to file taxes.
- Dependents and spouses: Family members of U.S. citizens or resident aliens who do not have an SSN.
- Others: Non-resident students, scholars, or business owners.
- More information about ITIN

Step 1: Understand the Requirements
Before applying for your ITIN, it’s essential to determine that you meet the eligibility requirements. As mentioned, you’ll need to be either a non-resident alien, a U.S. resident alien, or meet other conditions that necessitate filing taxes in the U.S. Additionally, you cannot apply for an ITIN if you are eligible for an SSN.
Step 2: Complete IRS Form W-7
The next step in getting your ITIN is filling out the IRS Form W-7, the official application form for an ITIN. The form requires personal information such as your name, address, and your reason for applying for an ITIN. Be sure to check the box on the form that best explains why you need the ITIN, such as for filing taxes or for a dependent’s tax return.
Step 3: Gather Supporting Documents
Once you’ve completed the W-7 form, you need to gather the necessary documents to prove your identity and foreign status. Some commonly accepted documents include:
- Passport (this is the most commonly accepted document)
- National identification card
- U.S. or foreign driver’s license
- Birth certificate
- U.S. visa
- Foreign military ID card
Ensure that the documents are either originals or certified copies. The IRS will not accept photocopies unless they are certified by the issuing authority.
Step 4: Submit Your Application
Now that you’ve completed the W-7 form and gathered all necessary documents, it’s time to submit your application. There are several ways you can submit the form and documents to the IRS:
- Mail the Form to the IRS: Send your completed Form W-7, along with your supporting documents, to the address provided in the IRS instructions. The address depends on where you live.
- Apply Through a Certifying Acceptance Agent (CAA): A CAA is an IRS-authorized individual or institution who can help you complete and submit your ITIN application. They are especially helpful if you’re located outside of the U.S.
- Visit an IRS Taxpayer Assistance Center (TAC): If you are in the U.S., you can apply in person at a local IRS office. You will still need to provide the necessary documents and have them certified.
Step 5: Wait for Processing
Once your application is submitted, you’ll need to wait for the IRS to process it. This typically takes about 7 to 11 weeks, depending on the time of year and your specific situation. If there are any issues with your application, such as missing information or documents, the IRS will contact you.
Step 6: Receive Your ITIN
After your application is processed and approved, the IRS will mail your ITIN to the address you provided on Form W-7. Keep your ITIN safe, as it is an important identifier for tax purposes.
Common ITIN Mistakes to Avoid
While the process for obtaining an ITIN is fairly simple, there are common mistakes that applicants often make. These mistakes can delay the processing of your application. Here are some tips to avoid these errors:
- Incorrect Form W-7: Ensure that all sections of the form are completed accurately. Double-check the reason you are applying for an ITIN and ensure all personal details match your documents.
- Missing Documents: Always submit original or certified copies of your supporting documents. Photocopies that are not certified will not be accepted.
- Incorrect Mailing Address: Provide an accurate address where you can receive your ITIN. If your address changes during the processing time, make sure to update it with the IRS.
- Not Using a CAA: While you can apply independently, using a Certifying Acceptance Agent can ensure that you meet all requirements and avoid errors in your application.
How to Check the Status of Your ITIN Application
After submitting your ITIN application, you may want to track its status. While the IRS doesn’t offer online status checks, you can call the IRS ITIN hotline at 1-800-908-9982 to inquire about your application’s progress. Keep in mind that during peak tax season, processing times may be longer than usual, so patience is key.
Conclusion
Getting an ITIN is a necessary step for many non-U.S. residents and others who need to file taxes or open a bank account in the U.S. By following these simple and easy steps—completing Form W-7, gathering supporting documents, and submitting the application—you can successfully obtain your ITIN. Be sure to double-check all forms and documents to avoid common mistakes and ensure smooth processing.