Inventory management is the efficient technique to manage the stock, oversee and control the stock. The project is conducted to investigate the impact of inventory management on performance and customer satisfaction of vaping business in New Zealand. The manager or an employee (hereon referred as a respondent in the report) from 18 random vaping companies of New Zealand with their sales and stock values are selected for the study. A questionnaire has been developed, designed and distributed as an instrument and the information was gathered and analysed for the research. The information was collected from different sources such as books, article, journals, reports and different websites. For the purpose of data analysis, Pearson’s correlation and regression analysis are used. The response provided by the respondents of different companies are rated in the scale from 1 to 6 and analysed and has been presented using quantitative analysis technique and graphical charts. The result shows that there is a strong positive relation of inventory management with company’s performance and customer satisfaction. Moreover, it can be noticed that the inventory must be ordered as per their proper requirement as the improper inventory management can result in excess or shortfall of inventory which effects both sales and customer satisfaction level of the company.