This report presents a comprehensive analysis of e-invoicing and its implications for small and medium enterprises (SMEs). It outlines the necessity for SMEs to transition from traditional invoicing methods to e-invoicing to enhance productivity and competitiveness in a rapidly digitizing economy. The document details findings from a survey conducted with over 9,000 SMEs across various regions, highlighting the significant productivity gains experienced by those who have adopted e-invoicing. It emphasizes the potential for e-invoicing to facilitate a broader digital transformation within businesses, including the integration of advanced technologies such as artificial intelligence. The report also discusses the economic benefits of e-invoicing, including improved tax compliance and reduced administrative burdens for governments. Furthermore, it identifies the barriers to adoption and provides recommendations for a successful transition to e-invoicing, emphasizing the need for public-private collaboration and international standardization to maximize the benefits of this technological shift.