When presenting one of a sequence of theories on individuation, Duns Scotus argues for a formal distinction in creatures between an individual essence and its existence. His reason is that, otherwise, an individual creature would be a necessary existent. Since Scotus maintains that essence is potential to existence, this paper shows how this discussion relates to his exhaustive analysis of actuality and metaphysical potency in the questions on the Metaphysics, book IX, qq. 1–2, concluding that Scotus’s views on essence and (...) existence do not commit him to a realm of real but unactualized possibilia. The paper tentatively suggests that existence, in creatures, consists in a relation to an efficient cause or causes. Scotus holds that God’s existence, identical with his essence, is nevertheless formally distinct from God, since essence/existence and the divine attributes are formally distinct from each other and all included in God. (shrink)