Accounting & Tax

US federal tax forms and publications from the Internal Revenue Service (IRS)

State and local tax resources from the Federation of Tax Administrators

This tax preparation company provides PDFs of federal and state forms, both current and several previous years' versions

Provides a succinct monthly analysis of select legislative changes, case law and treaty news from around the globe.

This is a subscription product but it also contains a number of free resources, including a link to its podcast

A codification of the general and permanent rules published in the Federal Register by the Executive departments and agencies of the Federal Government.

Established by Tax Analysts in 1995, site includes a "Tax History Museum", presidential tax returns, historical Forms 1040, editorial cartoons, and more.