For Commissioner Naomi Ferguson, the end-game is a "much more agile" system.
The tax department will await the outcome of an Employment Court hearing on the issue.
"Psychometric testing is only one tool you can use to decide your next employee but be aware that it is not the be all".
IRD says feedack from consultation has meant a number of changes to what was originally proposed.
"IRD staff have been excellent to deal with, but their systems not so much. I do hope we don't end up in the wrong place here"