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US Residency Certification Apostille- Form 6166 08.01.2016
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Many U.S. treaty partners require the IRS to certify that the person claiming treaty benefits is a resident of the United States for federal tax purposes. The IRS provides this residency certification on Form 6166, a letter of U.S. residency certification.

Form 6166 is a letter printed on U.S. Department of Treasury stationery certifying that the individuals or entities listed are residents of the United States for purposes of the income tax laws of the United States. You may use this form to claim income tax treaty benefits and certain other tax benefits in foreign countries. 

Need to get apostille on form 6166? We can assist.

Since IRS issued documents are federally issued documents, the apostille on these documents is issued  by US Department of State in Washington DC. No state in US can issue apostille on these documents. These can't be copied or notarized in any state for apostille as well. 

We require original form 6166 to be mailed to our office in Rockville, MD along with Authentication transmittal form. Apostille process takes usually 5 days and thereafter, documents can be sent back to you with FedEx, DHL around the world. 

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