She moved to London for five years after finishing high school, before returning to Australia and commencing a social science degree at the Bendigo College of Advanced Education.

Bev McArthur won Liberal preselection for the 2018 state election as a late replacement for Simon Ramsay, who abruptly retired due to drink-driving charges.

[9][10] In 2019, she warned against labelling climate change an 'emergency', likening the push to the boy who cried wolf and asking, "What happens when there is a genuine emergency like a terrorist attack, raging bush or urban fire, extreme weather events like cyclones and floods and power blackouts which threaten lives?

"[11] Bev McArthur has called for testing of the driving ability of foreign tourists, due to their involvement in 20% of crashes along the Great Ocean Road.

[17] In December 2024, McArthur ran in the 2024 Victorian Liberal Party Legislative Council deputy leadership spill, She lost with two votes.