USApostille provides a certification service for the IRS-issued US Tax Residence Certificate, acronymically IRS Form 6166. Which is used in countries participating in the Hague Convention.

We received an apostille of tax residency in the US Department of State, and we help businesses authenticate the US Department of Commerce and the embassy of the destination country in Washington DC.

Legalization of the embassy is necessary to recognize documents that will be used in countries not participating in The Hague.