In today’s corporate world, one of the most critical issues encountered by corporations is financial sustainability that may affect the overall profitability and performance of the firms. Financial growth is assumed as one of the most significant equity share value drivers, which required proper controlling. As sustainable financial growth problems are becoming progressively severe in the modern marketplace i.e. if companies have unrestrained growth of revenue, this can lead firms to serious financial problems. Therefore, the intent of this study is to observe the impact of financial sustainability on firm’s share price. Though, financial sustainability is a less established and new area in the field of corporate finance yet this concept is gaining importance now a days. This article attempts to cover the critical review of the emerging theories related to financial sustainability of firms, and lay down a scope of directions for future research.