Zerodha is one of the most notable discounted stock brokers in India. Any individual can open an instant Demat and trading account with Zerodha — Open Zerodha account online, and it takes 24–48 hours for the team to set up the account and deliver the kit over email.
However, the customer care support team is open till 02:00 PM on Saturdays and doesn’t work on stock market holidays (same as public holidays) and Sundays. But, one can register via mobile number and fill up the forms online; the customer care team will get back on Monday.