Treasurers have always relied upon population growth and bracket creep to help ramp up the revenue. A bigger population means more workers. And if wages are kicking along at a decent clip, more of those workers are bumped up into higher tax brackets.

Bracket creep is a Treasurer’s secret weapon. It delivers windfall gains for very little effort and in an election year, offers a wonderful opportunity to give the electorate exactly what they need; tax relief.

via Josh Frydenberg’s first MYEFO will be declared a triumph, but why did it take so long to fix the books? – Politics – ABC News (Australian Broadcasting Corporation)