Accounting conservatism and Accounting-based Earnings Management Practices (AEMP) introduce bias in financial information (FI), thereby influencing stakeholder behavior in the decision-making process. This study aims to analyze, from the certified accountants’ perspective, the AEMP in Portugal. Specifically, it analyses (1) the development of the AEMP and its impact on FI reporting, (2) the main hampered on its implementation, and (3) the need for the instruments and corporate governance mechanisms to mitigate the AEMP. Besides this research analyses (4) the relationship between the certified accountant’s characteristics (gender, age, professional experience, educational qualifications, and training area. To achieve the proposed objectives, we have used a quantitative methodological approach with a survey questionnaire, conducting an empirical study based on a sample of certified accountants. Based on a sample of 159 certified accountants, the results found that the majority of respondents indicate that Portuguese companies develop AEMP and that these practices have a negative and significant impact on the quality of financial statements (FS). Moreover, most certified accountants point out that is important to adopt measures that will prevent the abuse of AEMP and the main instruments for this are the establishments of more precise and concrete accounting standards and the application of the sanctions. The results also indicate that the audit committee and efficient internal control are corporate governance mechanisms AEMP able of mitigating the effects of the AEMP. Finally, the individual characteristics of certified accountants, such as professional experience, educational qualifications, and training area, significantly influence their perception of the need to mitigate the AEMP. This study presents relevant contributions to theory and practice. First, it develops the literature that evaluates AEMP, particularly in Portugal, where studies are scarce. Second, this study is original because it considers the relationship characteristics of accounting and AEMP professionals. Third, it allows entities that operate in accounting standardization and for accountants and FI users to have a more in-depth knowledge of the AEMP’s instruments and mechanisms.