U.S. government agency responsible for tax collection and tax law enforcement. Provides downloadable income tax forms, instructions, agency publications, and "The Digital Daily," an almost-humorous online newspaper.

Information on preparation, starting a new business, self-employment, and retirement plans.

Professionals with backgrounds in accounting answering individual tax questions.

Forum offering a venue for tax related questions including shelters, deductions and audits.

Information on all phases of tax planning and preparation.

Consumer reviews of conventional and online tax preparers, plus buying advice for tax services.

Forms and Publications

Offering IRS tax change information and law updates.

Plain-talk tax tips to help working teens handle taxes.

Provides advice and computes limits, regular tax and the alternative minimum tax.

Offers both print and online materials to help learn more about the history, theory, and application of taxes in the United States.

Microsoft's Tax Preparation site, in association with Tax Server.

A comprehensive index of tax and accounting resources on the Internet.

Information on extensions, capital gains, and withholding.

IRS website for tax pros.

Information resource for taxes and tax planning. Includes a large dictionary of tax terms and tips.

Includes a history of taxation, statistics, terms in different languages and a directory.

Examination of the revenue ruling regarding citizens being subject to tax on income earned or derived within the United States. Includes links and information on related rulings.

Comprehensive explanation of the tax treatment of timber. Including qualifying for capital gains, casualty losses, income, expenses, and reforestation.

Discover how the marriage penalty causes married couples to pay more taxes than their single counterparts. Learn who it hurts, why it is so costly, and how to avoid it.