Knowledge Management is an inclusive process of gathering knowledge, processing it and then utilising it in order to improve firm productivity and seek solutions to crucial problems. This paper is based on the assessment of structural framework of a Knowledge Management System (KMS) and how these components influence the financial and non-financial aspects of an organisation. The study mainly focuses on the evaluating the influence of KMS on the overall performance of SMEs in Austria. The current study investigates previous researches and theories to build a comprehensive understanding of the topic. It also conducts a quantitative analysis to evaluate the relationships between Knowledge Management Capabilities, Processes, and Firm Performance. To get first-hand information related to knowledge management practices, 126 managers and senior employees from 72 Austrian SMEs are surveyed. According to the results, KM capabilities have a significant positive relationship with KM processes. Moreover, KM processes in the Austrian SMEs have a significant positive influence on financial and non-financial performance. The study recommends increased focus on KM practices for improved overall performance.