In a statement issued to ZDNet Australia, the ATO said safety assessments had been completed, while application and configuration testing would be finalised ahead of a six-month deployment due to kick off early in the new financial year.
The ATO said its existing monitors -- also supplied through EDS -- were "in many cases" more than three years old, with the oldest being about six years.
"As staff are spending increasingly more time on desktop systems, the larger screens will provide greater clarity and [a] larger viewing area when using [ATO] business applications," the ATO said.
"The LCD screens are also much more energy-efficient, produce less heat and will take up less space on workstations".
According to documentation released to the AusTender Web site, the contract kicked off on 8 June and was due to expire on 30 June next year.