This seminar will provide a brief overview of an evolving framework within which to evaluate environmental policy choice, design, and implementation. The framework differs from others in the field in several important respects. It provides a new structure for analysis of policy instruments, developing the concept of “policy instrument space” rather than discrete categories of instruments. The new structure provides insight into the relations among a broad range of environmental policy instruments. The environmental policy instrument choice framework proposes a constrained cost minimization approach by which to reconfigure the evaluation criteria commonly applied in the instrument choice exercise. The framework also provides an integrated approach to the analysis of policy instruments, blending the analytical models of environmental economics with insight from public administration, New Institutional Economics, public finance, regulatory and constitutional law, and political economics.