Jim Chalmers is due to deliver a budget in weeks with the government now readying for a May election. A key budget watcher says the Treasurer is sitting on a $24 billion tax windfall. Jim Chalmers is due to deliver a budget in weeks with the government now readying for a May election. A key budget watcher says the Treasurer is sitting on a $24 billion tax windfall. Politics / Federal Sydney Morning Herald – Latest News