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ITIN Frequently Asked Questions

Everything you need to know about Individual Taxpayer Identification Numbers: from eligibility and application to processing times and what you can do with your ITIN once you have it.

General ITIN Questions

An ITIN (Individual Taxpayer Identification Number) is a 9-digit tax processing number issued by the IRS. It is assigned to individuals who need to file US taxes but are not eligible for a Social Security Number. This includes non-resident aliens, their spouses, and dependents. The format is 9XX-XX-XXXX.

For a deeper dive, read our complete guide on what an ITIN number is or learn about the differences between ITIN and EIN.

ITIN Application Process

You apply by completing IRS Form W-7 and submitting it with your identity documents. The fastest method is through an IRS-authorized Acceptance Agent (like itin.so) who certifies your documents so you do not need to mail your original passport. You can also mail your application directly to the IRS or visit an IRS Taxpayer Assistance Center in person.

Ready to get started? See our step-by-step guide on how to get an ITIN number or apply for your ITIN now.

Processing Times & Costs

There are two parts to the timeline. First, your application needs to be prepared and submitted. Our Standard service takes 7-10 business days, Express takes 2-3 business days. Second, the IRS processes your application, which currently takes 6-11 weeks. The IRS timeline is the same regardless of how you apply.

Using Your ITIN

Yes. Many US banks accept an ITIN as identification for opening accounts. Mercury, Wise, Relay, and several traditional banks allow ITIN holders to open personal and business accounts. An ITIN is often the first step for non-US residents who need US banking access.

Still have questions?

Our team is available on WhatsApp to answer any ITIN questions you have, in English and Spanish.