It is common amongst politicians and economists to suggest that we should tax bad things and subsidise good things. It is on these grounds that, for example, we have sugar taxes and cigarette taxes. The justification for taxing “bads” becomes stronger if the ill effects are felt more widely through society and not just by the consumers. Anybody looking at our tax system, with this principle in mind, might well conclude that our political class believes that families with two parents, and those families where one parent works part time or works entirely in the home bringing up children or looking after ageing parents, were a very bad thing. After all, we strongly penalise such arrangements in our tax and welfare systems.
