Can someone be a member of a state parliament and federal parliament at the same time?

The Commonwealth Commonwealth Coat of Arms and the Australian national flag on top of Australian Parliament House.

The Australian flag and the Commonwealth Coat of Arms at Australian Parliament House

Parliamentary Education Office (peo.gov.au)

The Australian flag and the Commonwealth Coat of Arms at Australian Parliament House

The Commonwealth Commonwealth Coat of Arms and the Australian national flag on top of Australian Parliament House.

Parliamentary Education Office (peo.gov.au)

Description

At Australian Parliament House, the Commonwealth Coat of Arms (a kangaroo and an emu standing on either side of a shield) and the Australian national flag are clearly visible at the front of the building.

No, a person can only be a member of the Australian Parliament, or a state or territory parliament. They can’t be both at the same time.

The Australian Constitution and the Commonwealth Electoral Act 1918 set out rules about who can be a member of the Australian Parliament. Someone who is a member of a state or territory parliament would not be able to run for election to the Australian Parliament unless they resigned from this role first.  

There have been many people who have been members of both the Australian Parliament and their state or territory parliament, but not at the same time. For example, Senator Katy Gallagher was a member of the ACT Legislative Assembly before resigning to become a senator representing the ACT. Mr Andrew Gee was a member of the NSW Legislative Assembly. He resigned from this position before being elected to the House of Representatives as the Member for Calare.