| Treasury Department | http://www.treasury.gov/ |
| Internal Revenue Service | http://www.irs.gov/ |
| Tax Information for Visitors to the U.S. | http://www.irs.gov/publications/p513/index.html |
| Tax Information for Foreign Students and Scholars | http://www.irs.gov/businesses/small/international/article/0,,id=96431,00.html | Tax Guide for Aliens | http://www.irs.gov/businesses/small/international/article/0,,id=96477,00.html | U.S. Citizens Living Abroad | http://www.irs.gov/faqs/content/0,,id=199953,00.html |