This article discusses double materiality in environmental, social, and governance (ESG) reporting and the importance of professional accountants in addressing these issues. Double materiality, which emphasises the relationship between financial performance and external environmental, social, and governance (ESG) implications, makes standardisation, materiality assessment, and comparability across industries difficult. Professional accountants' expertise in financial reporting, audits and ethics helps to create transparent reporting systems. Collaboration, industry-specific measures, and current technologies are vital tools for accountants. The discussion concludes that professional accountants are crucial to eliminate double materiality and promoting sustainable company practices through ESG reporting.