Negative income tax notion has long been popular in some circles, its implementation has never been politically feasible. This is partly because of the very complex and entrenched nature of most countries' current tax laws: they would have to be rewritten under any NIT system. However, some countries have seen the introduction of refundable (or non-wastable) tax credits which can be paid even when there is no tax liability to be offset, such as the Earned Income Tax Credit in the United States and working tax credit in the UK. In 1971, President Richard Nixon proposed a negative income tax as the centerpiece
Income tax in the Netherlands however, specify how the benefit of the 30% rule should be divided between the employee and the employer. Some employers (e.g. Shell) have stipulated in their general working conditions that the 30% rule income tax benefit is solely for the benefit of the company, arguing that salaries of their local workers would not be on par with their foreign work force. The 30% rule income tax benefit is then divided between an employee and the employer up to the level as if the foreigner employer fictively paid the income tax on the entire salary and the surplus left to the