Yes I know what flat tax means. Well ... here in Australia, if we taxed everyone at 15%, the country would go broke overnight. We'd loose our education system, our health care system, our water, our infrastructure. We'd start to look like the US :( As noted before ... I'm glad that we're not seriously considering that here. What we have here is a moderately progressive system ... where low-income earners pay around 15%, but high income earners pay 3 times that. Of course, the ultra-wealthy can always make their income 'disappear' and end up paying no taxes at all. But we're closing loopholes that allow this kind of thing ... slowly.