Then, in the twentieth century, the Speenhamland principle was revived – and by none other than the free-market liberal Milton Friedman. In 1962, Friedman proposed a “negative income tax,” whereby people earning below a certain threshold would receive supplemental income from the government, rather than paying taxes to it.
接着，在二十世纪，斯宾汉兰原则复兴——推动者不是别人，正是自由市场自由派米尔顿·弗里德曼（Milton Friedman）。1962年，弗里德曼提出实施一种“负所得税”，收入低于一定阈值的人从政府获得补偿性收入而无需为缴纳所得税。他的思想是让人们不再去领救济而是回去工作。该思想在美国和英国分别以“劳动所得税抵扣”（Earned Income Tax Credit）和“工作家庭税收减免”（Working Families Tax Credit）的形式实施。