How to Apply for ITIN | Individual Taxpayer ID Guide

Aug 18, 2025 | IRS, ITIN, US Tax | 0 comments

Whether you need to file a U.S. tax return, claim treaty benefits, or fulfil other IRS requirements, here’s what you need to know about applying for an Individual Taxpayer Identification Number (ITIN).

How to Apply for ITIN | Individual Taxpayer ID Guide

a) What Is an ITIN?

An ITIN (Individual Taxpayer Identification Number) is a nine-digit number issued by the IRS to individuals who are required to file U.S. taxes. 

b) What Other Purposes Can an ITIN Serve?

Beyond filing a federal tax return, an ITIN may be needed for:

  • Claiming tax treaty benefits to reduce or eliminate withholding tax.
  • Reporting U.S. investments, rental income, royalties, or business activity.
  • Acting as a dependent or spouse on a U.S. tax return.
  • Opening U.S. bank accounts or filing information returns for certain U.S.-source income.

c) How Does One Apply for an ITIN?

Applying for an ITIN involves these steps:

  1. Complete IRS Form W-7 – Make sure you use the latest version of the application forms and select the correct reason why the ITIN is needed.
  2. Gather Required Documents – Typically, your passport is sufficient. If not, you’ll need two documents proving identity and foreign status.
  3. Submit Your Application – You can choose one of the following:
    • Mail your W-7 and original passport documents to the IRS.
    • Use a Certified Acceptance Agent (CAA), who will verify documents so you don’t have to send originals [i.e. passports].
    • If you are residing in the USA, visit certain IRS Taxpayer Assistance Centres TAC (if available), by appointment only.
  4. Wait for IRS Processing – Once approved, the IRS will send you a CP565 notice confirming your ITIN assignment. Processing times vary but generally take 7–11 weeks.

Final Thoughts

An ITIN opens the door to tax compliance and benefits for non-U.S. individuals with U.S. tax obligations. It’s a straightforward process if done correctly, and using a Certified Acceptance Agent can make it seamless.

Our team specializes in assisting individuals with ITIN applications, ensuring that all documentation is prepared correctly and submitted efficiently. If you need guidance or support with the application process, visit our website to learn more about our services. We’re here to help you navigate the complexities of U.S. tax compliance.

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