India's growing economic might in recent years has seen the country adapting its economic policy towards several countries to enhance its global influence and status to meet the ever increasing challenges of the 21st century economy. As a result, India-Japan relations have undergone a tectonic shift which is directed towards building a strategic and global partnership between the two countries. India and Japan share a special relationship as fellow democracies with mutual interests and with a similar desire to seek peaceful resolutions of conflicts and greater economic engagements in Asia. The signing of the Indo-Japan Economic Partnership agreement (EPA) in February, 2011 and its subsequent implementation in August the same year was seen as a major breakthrough in the economic cooperation between the two countries which could boost bilateral trade and investment relations between two very large economies in the world. The emergence of Japan as one of the leading economic powerhouse in the world has been possible due to intricate planning at economic, political and social levels. The economic development of any country vis-á-vis the rest of the world depends on a number of factors, such as share in world trade, finance and investment. Current and future economic and population dynamics in both the countries mean that India-Japan relations will continue to improve not just politically but also in economic terms. The present paper will try to find the future prospects and challenges in the economic cooperation between the two nations.