ABC managing director David Anderson has found millions of dollars in cost savings across the public broadcaster and is now looking to review the taxpayer-funded organisation's property holdings as he grapples with a funding freeze.

Mr Anderson has been reviewing ways to save $84 million over the next three years after an indexation pause was revealed by the Turnbull government in the 2018 federal budget, with $40 million a year in savings needed from the 2021 financial year.

ABC boss David Anderson. Credit:Dominic Lorrimer

In an email to staff on Wednesday he said the broadcaster had so far managed to cut $17 million in annual expenses from 2021 onwards and was looking into other initiatives.

"The challenges are well-known. Declining real funding, the rising cost of content production and the need to maintain broadcast technologies while also investing in personalised digital services," Mr Anderson said in the email.