This document discusses sustainability accounting, which accounts for social, environmental, and economic impacts of decision making. It focuses on non-financial reporting and the triple bottom line of people, planet, profit. Sustainability accounting measures performance in these areas, evaluates companies' environmental/social/governance performance, and complements traditional financial accounting. It identifies risks/benefits and encourages stakeholder partnerships. Techniques include shadow pricing, life cycle analysis, and restating financial statements to reflect environmental, social, and economic value added. External impacts are also accounted for through scoping, boundary setting, valuation, and calculating sustainable profit.