<p><strong>Abstract</strong></p><p align="center"> </p><p><em>CV X is a motor vehicle sales company. To improve employee performance and company profits in order to survive business competition, the company is committed to implementing the ISO 9001:2015 quality management system since 2021. Therefore, research was conducted with the aim of obtaining information on the effectiveness of implementing the ISO 9001:2015 quality management system to improve company performance and profits. In this study, data were obtained from performance appraisal questionnaires and company documents. Then a T test was carried out for performance data and profit data explained descriptively. The results showed that employee performance increased after implementing the ISO 9001:2015 quality management system. The increase in company profits before the implementation of the quality management system averaged 2% annually and increased to 5% after the implementation of the ISO 9001: 2015 quality management system.</em></p>