GradPost General Information on Taxes for International Graduate Students U.S. Taxation of International Students and Scholars U.S. Tax Guide for Aliens (IRS Publication 519) U.S. Withholding of Tax on Nonresident Aliens and Foreign Entities (IRS Publication 515) U.S. Tax Treaties with Other Countries (IRS Publication 901) U.S. Estimated Tax for Nonresident Alien Individuals (IRS Form 1040ES (NR) U.S. Nonresident Alien Income Tax Return (IRS Form 1040-NR)