The coalition at the election promised not to cut funding to two broadcasters.
But the 2014/15 budget includes a one per cent cut in their base funding, described as a "down payment" on an efficiency study completed earlier this year.
Communications Minister Malcolm Turnbull said all government bodies needed to play a role in building a stronger economy.
"By sharing the load, we lighten the load," he said.
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Mr Turnbull said better work practices would make it easier to find the savings.
