SA set to clash with WA over GST funds

SA Treasurer Stephen Mullighan has demanded the state get a bigger slice of the GST pie. (AAP)

South Australia appears on a collision course with Western Australia over GST funds, with new Labor Treasurer Stephen Mullighan declaring the state must get a bigger slice of the pie.

Handing down the state budget on Thursday, Mr Mullighan said SA would get an additional $900 million in GST returns over the next four years on the back of increased national collections.