The ABC may have to axe one of its television networks if the Abbott government slashes its budget, managing director Mark Scott has warned.

In an interview with the ABC's Jon Faine, Mr Scott said the broadcaster could save money through back office efficiencies but not if the government cuts its budget in 2015 or 2016.

"If in fact government cuts money this financial year or next financial year before we can realise those efficiency savings then we would have to cut commissioning of some of our television content," he said.

"We would have to look at some of our radio services. And if cut was too dramatic we would have to look at how many channels we are offering.