Google Pay and ICICI Bank join hands to offer FASTag through app, here is how it works Google Pay and ICICI Bank join hands to offer FASTag through app, here is how it works ICICI bank has collaborated with Google for issuance of FASTag through Google Pay. FASTag has been made mandatory for four-wheelers from January 1, 2021. advertisement (Picture: Google) HIGHLIGHTS ICICI Bank has become the first bank to join hands with Google Pay for issuance of FASTag. Google Pay users can buy FASTag from the platform from ICICI Bank FASTag under Businesses. ICICI Bank customers can also avail FASTag using the Bank’s digital channels of banking including internet banking, iMobile app, InstaBIZ app and Pockets app.