This document provides guidelines to describe the best practices of coordinated risk management among multiple government agencies through a single window system. It is based on the work of the Group of Experts on Risk Management in Regulatory Systems (GRM), Recommendation V on Addressing Product Non-Compliance Risks in International Trade and the work of the United Nations Centre for Trade Facilitation and Electronic Business (UN/CEFACT) specifically its Recommendation 33 on Establishing a Single Window.