The budget will include another round of tax cuts and provide about $600 million to pursue wrongdoers and help restore trust in the financial system.
Any sign of hubris must be avoided, but a prudent opposition – especially with polls suggesting it's soon likely to be the executive – needs to be well prepared for the first days of power.
The overhaul of the program comes after pressure from various quarters including conservative Liberals for immigration to be lowered, and the government talking up the need for 'congestion busting'.
Both Gaetjens and Frydenberg might reflect, incidentally, that this, the first budget for each of them, is likely to be their last - if the opinion polls are right.
There are limits on how much governments can spend without earning, although increasingly politicians are behaving as if there are not.
South Africa's finance minister delivered a budget that tried to balance serving the public interest, while maintaining the stability of public finances.
Frydenberg reiterates that the Liberal party is still a "broad church" and says he isn't concerned about other MPs like Craig Kelly following Banks' suit.