Department of the TreasuryEstimated tax payments should be mailed with form 1040-ES to:
Internal Revenue Service Center
Austin, TX 73301-0215
Internal Revenue Service你可以去IRS個網查吓, www.irs.gov, citizens or residents working overseas 可以延期去到6月15日交回報稅表,我細佬以前都試過喺香港工作報美國稅,唯一痲煩係要香港僱主填份佢嘅入息証明(1040-ES).去IRS個網你可以搵publication 4588 basic tax guide for green card holders 同 publication 54 tax guide for US citizens and residents abroad 睇吓,亦有email同電話可以打去IRS問.http://www.irs.gov/businesses/small/international/article/0,,id=97324,00.html
P.O. Box 660406
Dallas, TX 75266-0406
USA