But with its repeal imminent after a change of government and a Senate vote on Tuesday,Business Council chief executive Jennifer Westacott said much of the spending attached to the tax was still in place.
"It is disappointing that some of the provisions in the legislation still act as a burden on Australia's already unsustainable medium-term fiscal position,"she said.
Ms Westacott did not clarify which provisions she was referring to,but it was noted on Tuesday that a bonus paid to families with children at school will be retained,although it will now be available only to families earning less than $100,000 a year.
Other bonuses for low income people will also be maintained temporarily but plans to boost superannuation payments have been delayed by at least six years under a deal struck by the Abbott government and representatives of the Palmer United Party.
"The whole process around the MRRT underscores the need for tax reform to be undertaken properly,rather than through ad hoc measures,and with the clear goals of ensuring governments have sufficient revenue for the future while creating an environment that supports jobs and investment,"Ms Westacott said.
Apart from the spending issue,Ms Westacott was largely supportive of the repeal,saying it would remove a weight from Australia's economic competitiveness.