This paper examines what Kant says about the economy in Feyerabend’s notes of Kant’s lectures on natural right. While Feyerabend does not report Kant having a systematic discussion of the economy as a topic in its own right the text is interesting in what it shows about the context and the development of Kant’s thought on issues to do with political economy. I look at the Feyerabend lecture notes in relation to things said about the economy in Achenwall’s Natural Law, Kant’s text book, as well as in Kant’s Doctrine of Right. Looking at the three texts in relation to each other illuminates the development of Kant’s thinking and the paper focuses on tracing the relations between ideas to do with the economy in the three texts. I look at Kant’s developing thoughts on the economy in relation to the following ideas: an account of money; an account of value and price; the theorization of labor; taxation; property and the commons.