Jacinta Nampijinpa Price has defended charging taxpayers for travel during a defamation case as MPs expenses again go under the spotlight.

Senator Nampijinpa Price received a total of $1980 in travel allowance for 12 nights between October 18 and October 30 in Darwin.

The Liberal senator also charged taxpayers $1060 for return flights from Alice Springs to Darwin, where the case was heard.

The senator said all travel claims were within official guidelines.

She was defending a defamation suit brought by an Indigenous land council over a media release she issued in July 2024.

Two family members billed $550 each to return with her from Darwin to Alice Springs, where she lives, on October 30 as well.

Senator Nampijinpa Price said she undertook parliamentary duties during that period "consistent with my responsibilities as a senator representing Territorians".

"The travel and accommodation claims referenced were made in full compliance with the rules of the Independent Parliamentary Expenses Authority," she told AAP.

Under travel entitlement rules, MPs must ensure parliamentary business is the dominant purpose of their travel and that they engage in good faith.

The parliamentary watchdog updated its travel entitlement rules after the prime minister requested a review of family benefits.

Entitlements have been tightened, including scrapping families flying business class, after it emerged MPs had charged taxpayers to fly them and their families to attend sporting events and holidays.

Australian Associated Press