First, our regime of personal income taxes. Currently, our personal income tax system is already progressive. For instance, those earning less than $20,000 per year do not pay any income tax. Thereafter, there is a tiered system where higher rates of taxes apply to income earned above certain thresholds. Finally, at the top end, those earning an annual income of more than $320,000 are taxed at 20%. It has been noted by several economists that there is room for further tiering above the $320,000 threshold, as the current tiering catches a wide range of income earners in this top bracket, ranging from a university professor who just makes it to this bracket to a banker who earns millions of dollars a year. I understand that this cut off of $320,000 has not been adjusted for around a decade, while in the mean time, incomes at the higher ends have soared. There is clearly scope to have more tiers at higher rates, say up to 25%, for those who earn above certain higher thresholds. For instance, those earning between $320,000 and up to $500,000 could be taxed at 20%; those earning between $500,000 and $700,000 at 22%; those earning between $700,000 and $1 million at 24% and above $1 million, 25%.