Surpluses totalling $1.4 billion will be forecast in a state budget focused on fiscal discipline and steering its finances clear of a debt abyss.
Treasurer Tom Koutsantonis will reveal a $189 million surplus for 2025/26 when he delivers the South Australian budget on Thursday, up more than $100 million on the figure predicted in December.
There is also increased GST revenue of $225 million, with surpluses across the four-year forward estimates totalling $1.4 billion.
But the opposition insists the budget is ''cooked'' and Labor has no plan to manage the state's debt, which is predicted to balloon to close to $50 billion by 2039.
Mr Koutsantonis said he would deliver a budget that takes necessary action to maintain fiscal restraint while still providing government investment where it is needed most.
