Özet:

In the XXI. century due to the globalization International Accounting Standards has cometotheforein Turkey as in allcountries of the World. With the wide spread of International Accounting Standards that revealed by globalization using of professional judgment has beguntoincrease.Especially in 2012 with coming into the force of new Turkish Commercial Code the field of using professional judgment has expanded rapidly. This situation has resulted from the spread of International Accounting Standards and the increase in expectations from accounting. Because in a sense the need for using Professional judgment is related to the multiplicity of alternataives. Professional judgment provides ability Professional stomake decision independently and touse their own initiatives being subject to principles rather than rules. However using Professional judgment includes specific human restrictions such as predictionerror, lack of knowledge and inexperience in addition to deliberately misuse as a risk. In this respect, Professional judgment must be used by experienced and knowledge able people with in the framework of Professional ethic principles and rules. Thus, in the study inspired by the developments which paved the way for using Professional judgment in the world and Turkey, Borsa İstanbul (BIST) 100 Index companies’ accountants and auditors’ Professional judgment perception, the challenges of using Professional judgment, interaction between Professional judgment and ethics, relationship between Professional judgments and accounting information quality perspectives were researched. In order to achieve this research, including 24 open propositions question naire was formed and by applying to 92 peoples ample data were obtained. In the light of obtaineddata, interrelatedvariables were classified by factor an alysis of statistical techniques, hypotheses were formed and there have been identified significant differences in gender, title, age, educational level and tenure in using professiona ljudgment of respondents. Inaddition, it was concluded that there is a consensus on thenecessity of training and seminars for Professional judgment and ethical relationship.

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