Income Tax Fundamentals 2025

Dr. Gene Whittenburg, the original author of INCOME TAX FUNDAMENTALS, designed the forms-based approach that has clarified and reshaped how students have learned income tax fundamentals for three decades.

Dr. Steven Gill is an associate professor in the Charles W. Lamden School of Accountancy at the Fowler College of Business at San Diego State University. He received a B.S. in accounting from the University of Florida (Gainesville, FL), an M.S. in taxation from Northeastern University (Boston, MA) and a Ph.D. in accounting (University of Massachusetts). Prior to entering academia, Dr. Gill worked for 12 years in the field of accounting, including roles in public accounting, internal audit, corporate accounting and ultimately, vice president of finance. Dr. Gill’s research interests include a concentration in taxation, including mutual funds and college savings (“529”) plans and wider interests in tax compliance behavior. He has taught undergraduate and graduate levels and his teaching interests include taxation and both financial and managerial accounting. In addition to this text, Dr. Gill serves as co-author of FEDERAL TAX RESEARCH.