WhatsApp Pay allows users to send money to one another for free or make purchases from small businesses.
How to use Whatsapp Payment
WhatsApp Pay will be part of the Unified Payments Interface (UPI) method that allows people to transfer money without having to go through the process of providing bank account numbers and IFSC codes.
Only those contacts that have a UPI ID will be able to receive or transfer money through WhatsApp payments. For those not on their contact list, WhatsApp Pay will verify QR codes.