The Internal Revenue Service, a bureau of the U.S. Department of the Treasury, administers and enforces the federal tax laws and regulations. Its website is organized by user categories (e.g., Individual, Business, Charities & Non-Profits, Government ...
The U.S. Tax Court hears disputes regarding tax deficiencies which have been claimed by the Internal Revenue Service, but have not yet paid by the taxpayer. Its site includes a database of Opinions (1995-present) and Docket information (1986-present), cou ...