Assistant Treasurer Stuart Robert will headline a Liberal Party fundraiser that promises political donors an insight into the government's potential response to the banking royal commission.

The lunch, hosted by Liberal National Party backbencher Andrew Wallace, has been slammed by Labor as a crass attempt to capitalise on an explosive probe the Coalition had long opposed.

Assistant Treasurer Stuart Robert and the flyer promoting his appearance at a fundraiser about the royal commission.

"It’s appalling and disgusting that after voting against a banking royal commission 26 times, Scott Morrison and the Liberals now want to make a profit out of it," shadow treasurer Chris Bowen said.

"It’s a sickening insult to the victims of banking misconduct who are still trying to put their lives back together."