tax question

来源: 于 2008-03-26 12:57:26 [旧帖] [给我悄悄话] 本文已被阅读：次

I forget to sign the tax treaty form W-8Ben for 2007. So I paid the federal tax in 2007 and received a W-2 form other than 1042S. In this case, how can I claim back this federal tax ?
thanks