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Work with an IRS-authorized Certifying Acceptance Agent (CAA)

ITIN
Application Services

Professional Form W-7 preparation, document review and IRS submission support for ITIN applicants worldwide.

Aleksandr Isakov, CPA, Principal of US CAN Tax Group, is an IRS-authorized Certifying Acceptance Agent (CAA) with more than 25 years of U.S. tax and cross-border experience.

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What Is an ITIN?

An ITIN (Individual Taxpayer Identification Number) is a tax processing number issued by the IRS for certain individuals who need a U.S. taxpayer identification number but are not eligible for a Social Security Number (SSN).

Whether you need an ITIN — and whether you qualify for one — depends on your individual circumstances and IRS rules. Not everyone with a U.S. connection needs an ITIN, and submitting an inquiry is the best way to determine whether we can assist with your situation.

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Who May Need an ITIN?

Certain nonresident or resident aliens with a U.S. tax filing or reporting requirement
Spouses or dependents of U.S. citizens, residents or other taxpayers, where applicable
Foreign individuals with U.S. tax filing or reporting requirements
Other eligible applicants under IRS rules

These are examples only. ITIN eligibility is determined by IRS rules on a case-by-case basis, and some applicants may qualify for exceptions or alternative procedures. For context on U.S. filing obligations abroad, see our guide to U.S. taxes for Americans living in Canada.

What We Do

How US CAN Tax Group Helps

Form W-7 preparation and review

Preparation and review of Form W-7, the IRS application for an ITIN, completed accurately for your circumstances.

Eligibility and documentation review

Review of whether an ITIN is the appropriate application for you and which supporting documents IRS rules require.

CAA document authentication where eligible

Authentication of eligible supporting documents within IRS Certifying Acceptance Agent rules, where available.

Application package preparation

Preparation of a complete ITIN application package, including Form W-7 and required supporting documentation.

IRS submission support

Submission of the application and coordination with the IRS as part of the agreed engagement.

Follow-up for IRS notices or questions

Follow-up assistance if the IRS raises requests or questions about the application.

Aleksandr Isakov, CPA, IRS-authorized Certifying Acceptance Agent (CAA)
Why Work With a CAA

Certifying Acceptance Agent Services

An IRS-authorized Certifying Acceptance Agent (CAA) can authenticate many eligible supporting documents as part of an ITIN application, subject to IRS rules. Where CAA authentication applies, this may allow applicants to avoid mailing certain original documents to the IRS.

Aleksandr Isakov is an IRS-authorized Certifying Acceptance Agent (CAA), so eligible ITIN applicants can often have their documentation reviewed and certified directly through US CAN Tax Group, within IRS rules. See Aleksandr Isakov's profile for his full credentials.

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CAA Limitations

CAA document authentication is subject to IRS rules. CAA authentication does not apply to foreign military identification cards. For dependents, CAA authentication is limited to passports and birth certificates. Other supporting documents may need to be submitted as originals or as copies certified by the issuing agency, under IRS requirements.

ITIN Applications From Outside the United States

ITIN applicants may work with an IRS-authorized Certifying Acceptance Agent (CAA) from outside the United States, subject to eligibility and document requirements. US CAN Tax Group works with ITIN applicants worldwide, regardless of where they live.

If you are moving between countries or have cross-border filings in addition to your ITIN application, our team also advises on cross-border business tax matters and U.S. tax services for Americans living in Andorra.

Simple and Confidential

How the ITIN Application Process Works

1

Start Your Inquiry

Submit an inquiry and we'll review whether we can assist with your ITIN application.

2

Eligibility and document review

We review whether an ITIN applies to your situation and which documents IRS rules require.

3

Prepare Form W-7 and supporting package

We prepare Form W-7 and assemble the required supporting documentation.

4

CAA document review where applicable

Where IRS rules allow, eligible documents are reviewed and authenticated under CAA rules.

5

Submit and coordinate the application

The application package is submitted and coordinated with the IRS.

6

IRS follow-up if required

If the IRS raises requests or questions, we assist with follow-up.

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Common Questions

ITIN Frequently Asked Questions

Need an ITIN? Work With a CAA.

Submit an inquiry and we'll review whether we can assist with your ITIN application.

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Confidential inquiry process. No obligation. Please do not send tax documents, SSN/SIN, ITIN numbers, passport scans or banking details by email or WhatsApp — we will provide secure instructions when documents are required.

The information on this page is general educational information and does not constitute individualized tax, legal or financial advice. ITIN eligibility, document requirements and CAA authentication rules are determined by the IRS and depend on each applicant's circumstances. US CAN Tax Group is not an agent of the IRS, and no outcome or approval of any application is guaranteed. For broader background, browse our cross-border tax guides.