The Natural Capital Protocol is a standardized framework to help businesses identify, measure, and value their direct and indirect impacts and dependencies on natural capital. It provides a four-stage process to guide assessments: Frame, Scope, Measure and Value, and Apply. The goal is to generate credible information to inform internal business decisions. While flexible, it includes principles of relevance, rigor, replicability, and consistency. Sector guides provide additional practical guidance. The Protocol is intended to help managers understand natural capital considerations and engage necessary experts.