The last decades witnessed important developments in our understanding of Ptolemaic Egypt. Traditionally seen as a highly centralised state exercising close control over the economy, it is now clear that the king was part of a broader coalition with the primary aim of raising stable revenues. Recent work on land tenure and taxation furthermore challenges the idea of a ‘royal economy’. This book tackles the other major pillar of this model: the so-called state monopolies in industry and trade. Ill-defined and anachronistic, it has been a problematic concept from its inception in the early twentieth century, yet it remains in wide use. Inspired by the famous ‘Revenue Laws’ papyrus, it evokes a centrally planned state economy. The book offers a deconstruction of these ideas and provides the first full assessment of the actual organisation of the sectors involved. The institutions are analysed within the framework of New Institutional Economics, including an analysis of their effect on economic performance. The study takes full account of both the Greek and the Demotic Egyptian sources. The Ptolemaic institutions are, moreover, contextualised within Greek and Egyptian fiscal history.