Taxation I is a comprehensive textbook designed specially to serve as an undergraduate textbook for B Com students of semester IV of the University of Calcutta. The book is divided into 12 chapters. Beginning with the basic concepts of tax, including difference between direct and Indirect taxation, and elements of the income Tax Act, the title goes on to discuss various factors contributing to the total income based on residential status of a person. Following this, detailed coverage on agricultural income, income from salary and house property has been provided. The book also discusses the role of profits and gains of business and profession, capital gains, assessee’s total income, and set off and carry forward of losses in the process of taxation. The concluding chapters deal with the computation of tax liability and rebate and deductions from gross total income. Key features is based on the provisions of finance Act, 2018 relating to the Assessment Year 2019-20 meets the requirements of Calcutta University BCS B Com course on taxation I completely uses step-by-step approach in illustrations to make learning simpler for readers includes over 240 illustrations and practice questions that follow the University question Paper pattern provides 2 Model Question Papers as per the new examination pattern of the University.