IRS.gov, the official website of the Internal Revenue Service, contains publications for current and past tax years, as of June 2015. Publications are available for individual taxpayers and businesses, and they include the basic rules for filing a federal tax return and a guide that explains an employer's tax responsibilities.
Taxpayers can order as many as 10 publications from the IRS for delivery by mail. The IRS includes instructions for forms automatically with an order, notes the agency. The agency website contains browser-friendly and accessible publications, and posts changes to current publications when they occur. Publications are available for download onto personal computers and in e-book format for certain mobile devices.