Two days prior to Diwali is a festival known as Dhan teras that is a day of wealth and money . People buy jewellery, utensils,gold and silver ornaments, new dresses etc.because it is considered that buying such things brings good luck to ones life on this auspicious day.
Another major day for worshipping Goddess Lakshmi, the goddess of wealth . Business people in india specifically worship Lakshmi and also Vishwakarma,the god of architecture and industrialization and machinery. Performing vedic rituals on this day initiates abundance and immense wealth in ones life. Highly sacred and worshippable day.