The book "A Reforma Tributária Brasileira" offers an in-depth and practical analysis of the proposed changes to Brazil's tax system, focusing on Bill 68/2024. Written by Heron Robledo, with over 30 years of experience in developing systems for companies and a five-decade career in the business world, this work presents a clear comparison between the current tax system and the new VAT regime. The reader will find practical examples, simulations of tax calculations, and an innovative calculation tool available in three languages. It also includes comparative examples of the structure of XML files for electronic invoices. Ideal for companies, developers, accountants, and public agents who seek to prepare for the imminent transformations and optimize tax processes.