The 5th Edition retains the organization of the 4th Edition. The updating includes all significant legislation, regulatory changes, and case law developments since the last edition. The major legislative developments that affect this book are the American Taxpayer Relief Act of 2012 (enacted in early January 2013), the Tax Cuts and Jobs Act of 2017 (including a discussion of the new Section 199A deduction for qualified business income), and the Inflation Reduction Act of 2022 (including a discussion of the new corporate alternative minimum tax based on financial statement income).