Tax audits are a very specific field, which encompasses both the subject matter itself and the methodology that fills the gap in the literature and is applied in practice. This work serves as a manual for tax audits and is addressed to professionals in the field (accountants, tax consultants, lawyers), as well as to a broader readership. Beyond that, however, it is also a useful guide on tax issues concerning individuals and legal entities, whether they are involved in a tax audit or not. In this, the reader will find rich material on traditional audit techniques, as well as a new rapidly developing tool of the audit authorities, the indirect methods of determining taxable income. This information is analyzed both theoretically and practically through a series of examples, some of which are drawn from conducted audits. Finally, an important chapter of the book is the answers to popular questions that are often encountered in practice and concern professionals, businesses, and individuals. Contents of the book: Preface General information on the method of taxation Tax audit Tax audit program for single-entry bookkeeping Tax audit program for double-entry bookkeeping Tax Reform – deductible expenses and exempt plans Stamp Duties Indirect audit techniques Administrative appeal Prevention of money laundering (AML) Law 4557/2018 Q&A Bibliography Index Abbreviations   Georgios Dalianis is an Economist – Tax Consultant, CEO of ARTION S.A. & Founder of the ARTION Group. Konstantinos Niforopoulos is a Certified Public Accountant, President and CEO of the company “ORION CERTIFIED PUBLIC ACCOUNTANTS S.A.” and Vice President of the company “BDO CERTIFIED PUBLIC ACCOUNTANTS S.A.” Ioannis Artsitas is an Accountant - Tax Consultant. Niki Chatzopoulou is a Lawyer at the Court of Appeals, member of the Athens Bar Association, and Accredited Mediator.