This title is a part of our CasebookPlus™ offering as ISBN 9798317706975. Learn more at Faculty-CasebookPlus.com.

The Twelfth Edition of this widely used casebook continues its long tradition of teaching the “fundamentals” of a highly complex subject with clear and engaging explanatory text, skillfully drafted problems, and a rich mix of original source materials to accompany the Code and regulations. This extensive revision discusses all significant developments since the last edition, including relevant provisions of the tax legislation known as the One Big Beautiful Bill Act. Highlights of new material covered in the Twelfth Edition are:

  • An updated overview of the tax and other planning considerations influencing the choice of entity for a new business.
  • A new chapter dedicated to tax considerations arising at the partner level, including eligibility for the § 199A qualified business income deduction in the partnership setting and application of the self-employment and net investment income taxes to the distributive shares of partnership income.
  • Expanded coverage of targeted allocations, including a new problem, and revised problems on the alternate test for economic effect and allocation of nonrecourse deductions.
  • Final regulations on the special treatment of bottom dollar payment obligations, the anti-abuse limitation on allocating recourse obligations, and the application of § 1061 rules recharacterizing gains of partners holding carried interests.
  • Discussion of the D.C. Circuit’s opinion in Rawat v. Commissioner and its implications on the application of § 751(a) to sales and exchanges of partnership interests.
  • Analysis of the impact of the Supreme Court’s Loper Bright decision on the partnership anti-abuse regulation.
  • Pruning of dated materials and more tightly edited cases, notes, and problems.


Imprint: Foundation Press
Series: University Casebook Series
Publication Date: 12/04/2026

Stephen Schwarz, UC College of the Law, San Francisco

Daniel J. Lathrope, University of San Francisco School of Law

Brant J. Hellwig, New York University School of Law

CasebookPlus™

This title is available in our CasebookPlus format. CasebookPlus provides support beyond your classroom lectures and materials by offering additional digital resources to you and your students. Anchored by faculty-authored formative self-assessments keyed to our most popular casebooks, CasebookPlus allows students to test their understanding of core concepts as they are learning them in class — on their own, outside of the classroom, with no extra work on your part. CasebookPlus combines three important elements:

  • A new print or digital casebook
  • Access to a downloadable eBook with the ability to highlight and add notes
  • 12-month access to a digital Learning Library complete with:
Multiple-choice self-assessment questions, including:
  • Chapter questions keyed to the casebook
  • Black Letter Law questions (available in select subjects)
  • Subject area review questions for end of semester use
Essay and short answer questions with sample answers and expert commentary, in 1L and select upper-level subjects

Leading digital study aids, an outline starter, and audio lectures in select subjects

Students can still utilize CasebookPlus digital resources if they've purchased a used book or are renting their text by purchasing the Learning Library at westacademic.com.

With CasebookPlus, you can customize your students' learning experience and monitor their performance. The quiz editor allows you to create your own custom quiz set, suppress specific quiz questions or quiz sets, and time-release quiz questions. Additionally, the flexible, customized reporting capability helps you evaluate your students' understanding of the material and can also help your school demonstrate compliance with the new ABA Assessment and Learning Outcomes standards.

Highlights of new material covered in the Twelfth Edition are:

  • An updated overview of the tax and other planning considerations influencing the choice of entity for a new business.
  • A new chapter dedicated to tax considerations arising at the partner level, including eligibility for the § 199A qualified business income deduction in the partnership setting and application of the self-employment and net investment income taxes to the distributive shares of partnership income.
  • Expanded coverage of targeted allocations, including a new problem, and revised problems on the alternate test for economic effect and allocation of nonrecourse deductions.
  • Final regulations on the special treatment of bottom dollar payment obligations, the anti-abuse limitation on allocating recourse obligations, and the application of § 1061 rules recharacterizing gains of partners holding carried interests.
  • Discussion of the D.C. Circuit’s opinion in Rawat v. Commissioner and its implications on the application of § 751(a) to sales and exchanges of partnership interests.
  • Analysis of the impact of the Supreme Court’s Loper Bright decision on the partnership anti-abuse regulation.
  • Pruning of dated materials and more tightly edited cases, notes, and problems.

Learn more about this series.