More than a quarter of large companies in Australia paid no income tax in 2023-24, including the parent company of embattled telco Optus, streaming behemoth Netflix, and a slew of energy giants.

New data released today by the Australian Taxation Office revealed the proportion of large companies has fallen to its lowest level on record, dipping to 28 per cent from 31 per cent the year before.

"For the first time since corporate tax transparency (CTT) reporting began, the amount of entities paying no tax has dropped below 30 per cent," ATO assistant commissioner Michelle Sams said.

"This is the lowest proportion of nil tax entities in eleven years of CTT reporting and in part reflects the continued efforts of the Tax Avoidance Taskforce in holding large corporates to account."

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