The study is devoted to a comparative analysis of the annual reports of Ahli Bank SAOG and Islamic Development Bank with an emphasis on compliance with the requirements of Accounting and Auditing Organization for Islamic Financial Institutions (AAOIFI) standards. The research purpose is to identify factors that affect compliance with the requirements of AAOIFI standards in the field of information disclosure in annual reports. Using such general economic methods as analysis and synthesis, comparison, logical and systematic approaches, the authors analyze annual reports of Ahli Bank SAOG and Islamic Development Bank, as well AAOIFI Conceptual Framework for Financial Reporting and the AAOIFI Governance Standard (GS) 6 «Statement on Governance Principles for Islamic Financial Institutions». Based on the results of the study, factors affecting compliance with the requirements of these regulations regarding disclosure of information in annual reports prepared under them were identified. These factors, taken together, have a significant impact on the extent to which the financial statements prepared in accordance with AAOIFI standards fully and accurately reflect the entity’s actual financial position and results of operations. In contrast to previous studies, the focus on the identified factors will allow Russian partner finance organizations to better disclose the compliance of their annual reports with the requirements of regulatory legal acts and standards, which will increase their level of financial transparency, and, as a result, improve the quality of their financial statements and investor’s confidence.