There's just a month until Jim Chalmers hands down his first budget. This week the Treasurer and Finance Minister Katy Gallagher announced there’d been a $50b turnaround in the budget bottom line last financial year thanks to soaring commodity prices, low unemployment and delays in some government infrastructure spending. Them’s big bucks! But before you pop the champagne, the Treasurer was quick to point out that the improvement is temporary, and the ongoing structural deficit means the government will still have to make hard decisions to fix the books.