This text provides a foundational understanding of United States income tax principles for the 2015 tax year. It is designed for instructors, offering comprehensive coverage of tax law as it applies to individuals, partnerships, and corporations. The material is structured to facilitate teaching, likely including pedagogical aids and explanations tailored for an educational setting.

As an instructor's edition, this text is primarily evaluated on its pedagogical utility and accuracy in presenting tax law for the specified year. The content is expected to be thorough, covering fundamental aspects of income taxation for various entities. Its utility would be measured by its effectiveness in equipping instructors to teach the subject matter comprehensively and accurately.