Indian government has taken a bold decision on note ban on 08/11/2016. Central government was a judicious, well-thought out and well-implemented step, and whether it would really eradicate all the existing black money. Here I have utilized the opinions of great expert on economics, financial economist and intellectual politicians. This study will help us to know about the positive and negative impact of note ban decision taken by Indian government. This study is purely based on secondary data, which is collected from news papers, magazines, websites from internet, some useful books related to topic etc. This paper entails the problems related to pre and post demonetization period and thereby to find out solutions and to provide suggestions in order to overcome the problem. Demonetization is the process of withdrawal of a particular form of currency from circulation. The purpose of the study is to compare and analyse the impact of demonetization on Indian economy during pre and post period. The older denominations must be replaced with the new ones. The findings of the study reveal that India will achieve a significant growth by adopting the demonetization strategy and will create a huge positive impact on the entire economy in a long run. This paper also shows that it was quick step taken by the government of India without any measures which people had to face a lot of consequences in standing in the long queues to exchange their older denominations.