GST supporters on another planet:Shorten

Opposition Bill Shorten says people don't know what they are talking about if they want a higher rate of GST.

Opposition leader Bill Shorten has dismissed growing voter support for a GST hike with compensation. (AAP)

Opposition Bill Shorten has dismissed growing voter support for a GST hike provided it comes with adequate compensation.

"You must live on another planet if you think people want to pay another 15 per cent in GST," Mr Shorten told reporters in Canberra on Thursday.

He also declined to comment on South Australian Premier Jay Weatherill's support for the GST to be broadened to financial services, saying the bushfire-hit state was going through a "difficult day".