The professional interests of the various stakeholders groups are often seen as obstacles to full accounting harmonization. Studying different professional interests in the accounting domain is significant for organizations involved in the international accounting harmonization process, insofar as it enables them to identify the main obstacles to face in order to achieve full harmonization. Thus, this article is aimed at analyzing the differences in terms of professional interests by addressing the participation of various stakeholders groups in the process of issuing/modifying standards of the International Accounting Standards Board (IASB). Based on content analysis, we examined the comment letters sent to the IASB in the context of the first part of the first phase of the project to replace the International Accounting Standard (IAS) 39, entitled "Financial Instruments -Recognition and Measurement", by the International Financial Reporting Standard (IFRS) 9, on its turn entitled "Financial Instruments". Respondents were identified according to the stakeholders group, and, later, the collected data underwent a nonparametric chi-square test. The results of this study indicate there are significant differences between the answers obtained from the various stakeholders groups involved in the process of issuing or reviewing a standard of the IASB, above all made clear between the group of financial preparers and the regulatory and/or standard-setting agencies and the professional associations related to accounting.