Google Pay in India allows users to manage credit card payments easily through its platform, which supports Unified Payments Interface (UPI) transactions. Users can add credit cards from various banks and Non-Banking Financial Companies (NBFCs) like OneCard, and benefit from instant payment confirmations. To set up credit card billers, users need to select their issuer, enter the last four digits of their card, and provide the linked mobile number. Notifications for new bills are sent, enabling direct payments through the app. However, American Express cards still require manual payments.