Revenue Online Service. Revenue Online Service (ROS) enables you to view your own, or your client's, current position with Revenue for various taxes and levies, file tax returns and forms, and make payments for these taxes online in a variety of ways. Further5.3 ROS information, and myAccount including videos, is available on the ROS Help Centre. ROS and myAccount are different online services but Revenue recognises that customers may need to use either of these online services at different times to carry out their business with us. To access both services, customers must be registered for Access to the Revenue Online Service (ROS), which provides for the electronic payment of over 21 different taxes and duties for business clients. ROS provides for the setting up of a direct debit Instruction, the electronic payment of taxes and duties for business clients, and the renewal of excise licences.