Managed network services (MNS) is one of three ICT outsourced service bundles the ATO is renegotiating as part of its . The others being end user computing and centralised computing.

The MNS bundle includes the provision of data and voice carriage services, telephony services, WAN and LAN services, videoconferencing, and call centre infrastructure and services.

spends about $60.5 million a year on these services.

While Optus has been selected to proceed to the final stage of contract negotiations, according to the ATO, if a "satisfactory outcome" in this phase of the process is not reached, it has the right to re-introduce the shortlisted MNS respondents back into the procurement process.

ATO second commissioner David Butler said contract negotiations should be complete "in the coming weeks" and more information on the contract will be provided then.