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IRS Form 6166 Apostille

Does your IRS Form 6166 need to be apostilled?

At Global Apostille, we make obtaining an apostille on your IRS Form 6166 easy and stress-free.

To claim income treaty and other tax benefits a company or an individual conducting business abroad, must obtain a certification from the IRS proving the residency in the United States for federal tax purposes. This document, typically referred to as U.S. Residency Certification, is also known as IRS Form 6166.

Form 6166 is printed on the U.S. Department of Treasures stationary paper and certifies that a company or a person listed on it is a legal resident of the United States. This form is required to legally claim income tax treaty benefits and other tax benefits while doing business in foreign countries. 

Obtaining an apostille can be intricate. Avoid leaving this task for inexperienced staff or non-professionals who are not fully aware of the complexities of the apostille process and the unique requirements of certain countries. Your application may be rejected, and you lose time and money. Make a better choice!

Our experts are available Monday through Friday from 10.00 AM to 6.00 PM. Please call us at 1-770-447-0360 and we will answer all your questions and offer easy to follow detailed instructions.


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"I highly recommend Global Apostille. They take on the daunting responsibility of the apostille documents process and simplify it for their clients. They give you the cost upfront and there are no hidden charges. The communication is excellent. Any question you have will be answered in a timely manner. And their follow up with me was much appreciated."
Anita S.
USA/Panama
"Thank you SO much. You have been extremely helpful through this whole process of getting apostille for my documents."
Sandy N.
Florida, USA
"When I was trying to get OCI Processing for my son done in India, I came to know that birth certificate Apostille should be submitted. I was not aware of such a thing. I was not sure whom to trust, I have sent emails to few agencies who said they will get it done. The one thing I really liked about Global Apostille is their prompt response and clear communication through emails."
Vijay P.
Hyderabad, India

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