Systems for implementation  This system would be best implemented by imposing a mandatory 100% tax on all personal income over $150,000, and all bonuses over $30,000. This means that some revenue could still be raised from this if people did continue to pay large salaries and bonuses, although they are unlikely to do so. Furthermore, it would be best implemented through international cooperation, to limit the opportunity of one country to be able to offer higher salaries and poach talented individuals. Countries may agree to this as it prevents a 'race to the top' in salaries, where companies have to offer more and more money to attract the best people.