Abstract: In the present article we analyse the usage of the Big Data techniques in the accounting profession, the authors’ findings revealing that this system is not as widely used by professional accountants as in other related fields. Firstly, we present modern data techniques to promote the understanding of their application potential highlighting the need for the accounting profession to head towards Big Data and financial review methods. The modern engagements in the accounting profession often imply the review of the clients using Big Data in order to remain competitive and relevant in the current business environment. Thus, the theoretical part is supplemented by a case study regarding the level of knowledge concerning the Big Data concept among professional accountants. In a Big Data environment, the professional accountant has the potential to perform more advanced projection analysis. Lastly, we present a series of conclusions that we hope will contribute to the literature, because professional accountants are interested in this field.