This book represents lecture material on IT in Accounting and Auditing in the way as it has being recently taught to students in Post-Soviet countries (particularly, in Ukraine). Therefore, the text mostly is the mix of old Soviet tradition of computerized accounting information processing and modern Western theories and practices. Material in this textbook is represented in a logical order convenient for the perception and the subsequent study. The basics of the information technologies application and organization of accounting while using the computer information systems are...