The salient features of the present edition are: All the Problems and Solutions have been thoroughly revised in the light of up-to-date amendments in Income tax Law and Rules for Assessment Year 2020-21. Almost all numerical questions given at the end of the chapters of the authors’ other publications on Income-tax (viz., Income-tax Law and Accounts, Aaykar Vidhan evam Lekhe, Law and Practice of Income-tax) have been solved in this book and the number printed within brackets at the end of the questions in other publications is the problem number of this book. The selection and sequence of the questions are well planned and systematic so as to cover all ticklish points within a reasonable number of questions. Wherever needed, detailed explanatory notes have been given at the end of solutions. Candidates preparing for C.A., Company Secretaries, Cost and Works Accountants, and Income-tax Departmental Examinations, will, particularly, find the book very useful. It will also be useful for candidates preparing for B.Com. and M.Com. Examinations of various Indian Universities.