Startup are the significant component of the competitive business environment, and also it is the revolutionary move from government of India which helps in fostering innovation, creating the job opportunities and driving economic growth and development. However, securing finance remains one of the vibrant challenges for startups, especially in developing counties like India. This paper explores the various challenges faced by the startup companies in accessing and managing the funds, analyses the key issues in startup financing and also outlines the sustainable growth through strategic solution. By analysing the contemporary case studies, strategic conceptual model for achieving sustainable growth, the paper focuses on the insight of investors, entrepreneurs, and policy makers