Making global tax access possible—one Individual Taxpayer Identification Number at a time.

For individuals who are not eligible for a Social Security Number (SSN) but still need to meet U.S. tax obligations, the ITIN (Individual Taxpayer Identification Number) is essential. Whether you’re a non-resident, international investor, dependent, or spouse of a U.S. resident, Adfiler simplifies the ITIN application process so you can stay compliant without confusion.

We help you obtain your ITIN efficiently and legally—removing the complexity and ensuring your tax responsibilities are handled with care.

Our ITIN Services include:

ITIN Eligibility Consultation

Not sure if you need an ITIN? We help assess your situation and guide you on whether an ITIN is necessary.

Form W-7 Preparation

We accurately prepare the IRS Form W-7 and ensure all required documentation is complete and correct.

Document Verification & Certification

We help with proper identity documentation, and where applicable, connect you with certified acceptance agents (CAA).

Submission to IRS

We file your ITIN application directly with the IRS, minimizing errors and reducing processing delays.

Ongoing Support

We keep you updated on your application status and provide guidance for any future tax filings using your ITIN.