This article highlights the spectacular growth of benefit sanctions in the United Kingdom which, at their peak, exceeded the number of fines imposed in the criminal courts. It proposes a three‐fold typology of monetary sanctions – punitive judicial sanctions, exemplified by court fines, regulatory administrative sanctions, exemplified by parking penalties, and disciplinary administrative monetary sanctions, exemplified by benefit sanctions – and compares them in terms of their main aims, how they are imposed, whether the interests of those sanctioned are protected, their severity, the socio‐economic characteristics of offenders, the hardship caused, how proportionate they are, and whether they are compatible with justice. It argues that they are particularly problematic because their severity causes great and disproportionate hardship, and because, in addition to punishing offenders, they also attempt to discipline them by managing their behaviour, and concludes that, in the United Kingdom, they function as a key instrument for disciplining and managing the poor.