We were talking not long ago about universal basic income policy, and there were a variety of opinions about the desirability, political sustainability and implications of such a policy. But, before arguing about those issues, it’s useful to consider whether a basic income is feasible at all and, if so, what kinds of tax policies, and adjustments to other welfare policies, would be required to support it. I’ve considered the relatively easy case of a guaranteed minimum income, rather than a universal basic income paid to everyone, as advocated by Philippe von Parijs and others.