What I'd like to do with regards to GST is talk about a tax on a tax. My favourite document at the moment is the Half Year Economic and Fiscal Update, and it seems that tonight there hasn't been a lot of conversation about actual numbers. If you look at GST, as a major tax, it is actually going to, in terms of forecasts, be an average $2.6 billion higher each year compared with the Budget update, with the biggest drivers being an increase in the forecast for private consumption and residential investment, and a small contribution from the opening of the borders in terms of migration. If you look at core tax revenue, you take it up a level. This is where Minister Parker could be accused of being Mr Scrooge. It's going to be an extra $2.2 billion per year, on average. That's $48.6 billion higher by 2024-25. There's no mechanisms in here with regards to management of inflation around GST, corporate tax, source deductions, and other withholding taxes. 