Abstract

This paper addresses the question of the reasonableness of a unitary system of effects for contractual termination in a broad sense, encompassing both intrinsic and extrinsic causes. To this end, it undertakes a comparative analysis of the regulation of the effects of nullity and termination for breach in two normative models: One “traditional”, the Civil Code of Bello, and the other “modern”, the UNIDROIT Principles of International Commercial Contracts. The conclusion suggests that maintaining a differentiated regime, as both texts do, is appropriate. Consequently, doctrinally supporting such a broad notion of “contractual termination” proves neither useful as a basis for a conceptual framework nor as a foundation for a normative regime. © 2025, Universidad Andina Simon Olivar, Sede Ecuador. All rights reserved.