NH모바일G is a mobile payment service that offers NH Smart Bank's Zero Pay service. Zero Pay is a mobile payment service that allows users to pay for everyday expenses using QR codes at affiliated stores. When paying with Zero Pay, the payment amount is automatically transferred from the user's NH Smart Bank account to the merchant's account. Zero Pay is a collaborative effort between the government, financial companies, and private payment service providers to reduce payment fees for small businesses.

The NH모바일G app provides users with three ways to pay using Zero Pay: by scanning the QR code displayed in-store, by having the merchant generate a QR code for the user to scan, or by generating a QR code through the app for the merchant to scan. The app also allows users to set a limit for their business expense account, view payment history, and access mobile receipts. NH모바일G is available for free on Android devices and is intended for use by NH Smart Bank customers.