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Sustainability Impact Assessment (SIA)
Methodology Explained

SIA Questionnaire.jpg

UNDP's SDG Impact Standards

OECD's key reports
on sustainable development

SIA Principles

Developed by OECD, it intends to increase awareness for developing more sustainable policies, strategies and action plans

SIA Advantages

Transparent, independent & evidence-based

Better planning and implementation with the “Anticipate-and-Avoid” method, considering both short-term and long-term effects

Minimise negative impact and associated cost

Create a learning environment by feeding back info to the database

Stakeholder engagement

Stakeholder participation allows for greater transparency and creates more sustainable and consensual policy solutions from society leaders, private sectors and civil society

Ensures input on the possible impacts (direct or indirect) and trade-offs from different

A focus beyond numbers

SIA uses a variety of tools and methodologies to capture less monetary aspects of sustainability, carried by external party to become transparent, independent and evidence-based

SIA Functions

A methodological soft policy instrument for developing integrated policies which

take full account of E+S+G.

  • Investigate the interrelations between these aspects, weighted impact of each component (pillar) against the others is included.


Assessment takes place before policies are been formulated

  • SIA follows well-defined methodologies and procedures that are transparent and creates a learning environment.

  • SIA assesses whether a proposed policy will contribute to sustainable development or not; does not evaluate the policy against its own goals.


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