Tax

Websites

Taxsites.com – Comprehensive directory of links to tax, accounting, and payroll.
ABA Tax Links Index – Links to federal, state, and miscellaneous tax sites.
Digital Accounting Collection – Full text access to over 1,000 accounting pamphlets, journals, and other materials.

Legalbitstream – Full text of U.S. tax cases, including Tax Court regular and memorandum opinions (back to 1990). Also links to full text of IRS revenue rulings (back to 1954), private letter rulings (back to 1979), general counsel memoranda (back to 1982), and more.
Cumulative Bulletins – Links to PDF versions of the IRS Cumulative Bulletin back to 1995.
State taxation statutes – Links to taxation statutes for all 50 states.

Worldwide-Tax.com – Includes general and economic surveys, as well as detailed tax information for numerous countries.
International Tax – Links to tax treaties, international tax associations, and other collections of international tax resources.

National Association of Tax Professionals – Links to federal tax information, online publications, a fee-based research service, and more.
American Institute of Certified Public Accountants – Links to journals (e.g., The Tax Adviser), professional resources, legislative information, and more.
Multistate Tax Commission – Intergovernmental agency working on behalf of states and taxpayers to administer tax laws that apply to multistate and multinational enterprises.
Federal of Tax Administrators – Compares state tax rates, collects state revenue data, links to state departments of revenue, and more.
Internal Revenue Service – Official IRS web site.
Department of the Treasury – Official web site of the U.S. Department of the Treasury.

TaxProphet – Original articles on wealth management, ESOs, and general tax issues.
The Tax Adviser – Monthly publication of the AICPA. Online archive back to 1997.
CNNMoney – News and analysis on tax, retirement, insurance, personal finance, and more.