The Internal Revenue Service is the official source for federal tax forms and publications. A variety of tax resources are available as well.
IRS Site Map
IRS Publications and Forms
IRS Frequently Asked Questions
IRS News
IRS What's Hot
IRS Explanation of Different Audit Notices
IRS Privacy Policies/Protecting Your Tax Information
IRS Taxpayer Rights
IRS Tax Information for Individuals
IRS Self Employed Individuals Tax Center