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Form 6166 is also known as Certification of U.S. Tax Residency. It’s just a sheet of official stationery with the U.S. Department Treasury seal on it that states the person it identifies is a U ...
Form 6166 is also known as Certification of U.S. Tax Residency. It’s just a sheet of official stationery with the U.S. Department Treasury seal on it that states the person it identifies is a U ...