The complex linkages among Knowledge Capital (KC), Capacity for Innovation (CI), and Performance of Organisation (PO) have been extensively studied. However, conclusively linking these interactions in knowledge-driven industries like information technology (IT) is still a challenge. This work closes this gap by carefully analyzing the interactions between Culture of the Organisation (CO), KC, and PO, with CI potentially acting as a mediating factor, particularly in the framework of the changing Indian IT environment. Employing a quantitative approach, this study surveyed 486 middle-level employees of leading IT companies across key Indian cities. The research, which makes use of Smart PLS 3.2, indicates that Corporate Wealth (CW), Human Resource Capital (HRC), and CO all positively impact CI. On the other hand, CW, HRC, and CI greatly support the PO. Interestingly, PO had a non-significant impact of PO on CO. Examining the interaction in greater detail, the study shows that CI somewhat mediates the effect of PO on HRC and CW but entirely mediates the link between CO and PO. These findings offer valuable practical insights to IT leaders. Leveraging the HRC, CW, and CO through the lens of the CI can be a potent strategy for maximizing performance. Moreover, this study identifies key areas for further investigation, highlighting the evolving dynamics within the Indian IT sector. The actionable recommendations provided, along with the groundwork laid for future exploration, pave the way for a deeper understanding of this dynamic and evolving domain.