Bronwyn Bishop has been hosting Liberal Party fundraisers in her Parliament House Speaker’s suite, leading to calls that her position as independent adjudicator is "untenable".

A spokesman for Ms Bishop said there was nothing illegal or improper about the practice, and no official rules appear to exist. But no recent Speakers interviewed by Fairfax Media had used their office for party fundraising.

Brownyn Bishop's decision to hold Liberal Party fundraisers in the Speaker's suite has raised eyebrows in Parliament House. Credit:Andrew Meares

Asked about a recent fundraising event held in the Speaker's Parliament House suite, Ms Bishop’s spokesman said: "From time to time the Speaker holds private functions in Parliament House as does a large number of members and senators... the cost is charged to her private account.”

"There is nothing illegal about it, there is nothing improper about it,” he added.