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The structure and composition of the Report has undergone a process of improvement, in order to guarantee the transparency of business information and guarantee the expectations of stakeholders. This meant the need to write a new section in the Audit Report, “Key Audit Matters KAM”, whereas the auditor, based on his professional judgment, must show the most significant aspects observed in the performance of the audit, as well as the response to the identified risks. According to the opinion of the auditor and selected from among the matters communicated to those responsible for the governance of the audited entity. These issues have been of the greatest importance for the audit of the financial statements of the period.The Key Audit Matters (KAM) have played an important role during the financial year 20-21, to analyze and evaluate the risks derived from the global pandemic that had social and economic impacts. They indicate the relevant non-financial information in the Financial Statements of the companies, in order to capture their impacts.Our study focuses on the analysis of the Key Audit Matters (KAM) of the companies that make up the IBEX 35 of the Spanish Stock Exchange, during the year 2020.