Book excerpt: Learn the complexities of the U.S. income tax code and master the most important areas of tax law with Whittenburg/Altus-Buller/Gill's concise, practical INCOME TAX FUNDAMENTALS 2020. This market-leading introduction to tax preparation uses a unique, step-by-step workbook format that integrates actual tax forms. You have the option to use Intuit ProConnect 2019 tax preparation software that accompanies each new book. A clear, up-to-date presentation walks you through real, current examples using the most recent actual tax forms. A variety of end-of-chapter problems offer hands-on practice with tax return problems that use source documents identical to those of real clients. In addition, numerous study tools and powerful online resources, including MindTap digital support and the CengageNOWv2 online homework tool, help you further refine the knowledge and skills to become a successful tax preparer.