Tax Concepts for Offshore Investors - Basics of taxation: concepts, definitions, such as "double taxation," "credits" vs. "rebates," with dollars and cents examples.
The Tax Prophet! - Original content on U. S. income taxation, plus professional tax articles, newsletters, hot topics discussions and colorful features.
TaxAlmanac - Collaborative tool for online tax research.
Taxaway - Daily tax tips, tax news items, and helpful information for US and UK taxpayers.
TaxCreditResouces.org - Information about federal and state tax credits for low-to-moderate income families, with online eligibility review. Sponsored by Community Resources Information, Inc.
TaxForum - Forum focused on United States tax law.