ITIN (Individual Taxpayer Identification Number) – Frequently Asked Questions

• 1. What is an ITIN and why do I need one?

  An ITIN (Individual Taxpayer Identification Number) is a tax processing number issued by the IRS for individuals who are not eligible for a Social Security Number (SSN). You need an ITIN to file U.S. taxes, open a bank account, or comply with federal tax laws.

• 2. Who is eligible to apply for an ITIN?

  You are eligible for an ITIN if you are a non-resident, dependent, or spouse who must file or be listed on a U.S. tax return but cannot get a Social Security Number.

• 3. How long does it take to receive an ITIN?

  Processing time usually takes 6 to 12 weeks, depending on the IRS workload and application accuracy. Using a certified acceptance agent often speeds up the process.

• 4. How to get an ITIN Number for a non‑resident?

  • Basic steps
    1. Complete Form W‑7
       • This is the IRS Application for an Individual Taxpayer Identification Number. It’s required to apply for an ITIN. 
    2. Gather required identity and foreign‑status documents
       • A passport is the strongest document because it alone can prove both identity and foreign status. If you use something else, you must submit at least 2 other documents that, together, prove identity and foreign status.
    3. Provide a federal tax purpose
       • Along with W‑7, you usually submit a U.S. federal tax return or other documentation showing the federal tax reason for needing an ITIN. This proves the need for the ITIN.
    4. Submit the application
       • Mail the W‑7 and documents to the IRS (with original or properly certified copies of supporting documents), or
       • Submit through a Certifying Acceptance Agent (CAA) either in the U.S. or abroad, or
       • If in the U.S., you could schedule an appointment at an IRS Taxpayer Assistance Center.

• 5. How to apply for an ITIN from Pakistan?

  If you are in Pakistan (or any country outside the U.S.), the process is essentially the same, but you’ll typically go through one of these routes:

  1. Apply by mail to the IRS with Form W‑7
  

  • Prepare W‑7, supporting documents (passport or other approved documents), and the relevant tax return or proof of purpose.
  • Mail everything to the IRS exactly as instructed (originals or certified copies are needed). This works from abroad.

  2. Use a Certifying Acceptance Agent (CAA) abroad

  • A CAA located outside the U.S. can help you prepare the W‑7, check your documents, and certify them so you don’t have to send originals to the IRS.
  • This is often the most convenient method when applying from Pakistan, because CAAs handle document verification and help ensure the application is complete before submission. The IRS allows CAAs to assist both in the U.S. and abroad.
    

  3. If you later visit the U.S

  • Optionally, you could apply in person at an IRS Taxpayer Assistance Center, but this is only realistic if you have plans to be in the U.S. and can schedule an appointment. Otherwise, mail or CAA is the practical route.