Is there any fee for binding WeChat financial services?

No charge. According to official WeChat information, there is no charge for binding bank cards to WeChat financial services, but there is a fee for transferring money from the WeChat wallet to a bank card. WeChat is a free application launched by Tencent on January 21, 2011 to provide instant messaging services for smart terminals. It supports cross-communication operators and cross-operating system platforms to quickly send free voice messages, videos, pictures and text over the network.