South Australia's treasurer has foreshadowed a push to secure GST revenue, calling on MPs across the political spectrum to step up their advocacy efforts — but the opposition has questioned why a recent GST windfall is not being used to counter soaring debt.

South Australian Premier Peter Malinauskas says there are no surprises for business in his government’s budget, drawing a contrast to the federal treasurer’s offering.

South Australia's treasurer has foreshadowed a push to secure GST revenue, calling on MPs across the political spectrum to step up their advocacy efforts — but the opposition has…