Provide your students with a superior discussion of the primary and secondary sources of tax law and offer hands-on tax research practice with FEDERAL TAX RESEARCH, 11E. This edition uses the latest versions of the most widely used online tax research tools, such as Thomson Reuters Checkpoint, CCH IntelliConnect, and BNA Bloomberg. A new searchable Research Case Matrix makes it easier for you to easily select and integrate proven research cases into your course. In addition, new research cases provide more variety and the opportunity to assign cases that are more realistic and less "black and white," to challenge your students’ thinking. Significant updates address recent revisions to Circular 230 and ethical requirements related to tax practice as well as new rules regarding the IRS audit process with expanded discussion that details how to work most effectively with the IRS.