This document provides an overview of a materiality tool for impactful business projects. It discusses sustainability failure rates and why addressing materiality matters for industries and companies. Common root causes of sustainability project failures are examined, including issues with market analysis, organizational planning, leadership, and stakeholder engagement. Mitigation strategies are proposed, such as understanding the type of company, mapping stakeholders, and developing impactful sustainability work. The 6 capitals model is introduced as a tool to evaluate projects across financial, manufactured, intellectual, human, social, and natural capital impacts. A case study of H&M's Conscious Collection initiative applies the 6 capitals framework to assess the program's materiality.