The B Impact Assessment (BIA)
The B Impact Assessment (BIA) is a free, confidential, online tool designed to help businesses measure, manage, and improve their social and environmental impact across five key impact areas: Governance, Workers, Community, Environment, and Customers.

Why use the B Impact Assessment?
The B Impact Assessment (BIA) is more than just a tool—it’s a roadmap for businesses looking to create a positive impact on the world. Whether you’re a small startup or a multinational corporation, the BIA provides clear insights into your company’s social and environmental performance, helping you drive meaningful change.

How to use the B Impact Assessment
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Step 1: Assess
Complete the B Impact Assessment by answering a series of questions about your company’s practices and outputs across five categories: governance, workers, community, the environment, and customers.
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Step 2: Compare
Evaluate your performance compared to the thousands of other businesses that have taken the B Impact Assessment. You’ll see where your business is outperforming others, and where there’s room for improvement.
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Step 3: Identify
The assessment highlights areas where your company excels and identifies opportunities for growth. Use the BIA to identify, track, and learn about improvement opportunities and best practices over time.
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Step 4: Improve
Impact isn’t static—it evolves. The BIA is a tool for ongoing growth. Businesses can track progress, set goals, and continuously improve their environmental and social practices.
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Step 5: Certify
For businesses aiming to become B Corp Certified, the BIA is the first step. Companies that achieve a verified score of 80 or above can pursue certification.
Introducing the B Impact Assessment
If you’re new to the BIA, our free B Corp Webinars provide step-by-step guidance on navigating the B Impact Assessment. Learn how this powerful tool works and how it can support your company’s journey.
What we measure as part of the B Impact Assessment
Your company’s governance
The B Impact Assessment will evaluate your company’s mission and engagement. The tool specifically looks at your social and environmental impact, ethics and transparency. Your company’s ability to protect its mission and consider its stakeholders in decision-making through its structure or governing documents will also be reviewed. Completing the legal requirement is a great first step to improving your governance score.
How your company treats its workers
This section looks at how your company supports its employees. We’ll focus on financial security, health and safety, wellness, career development and employee engagement and satisfaction. This section also recognises business models that benefit workers, such as companies that are at least 40% owned by non-executive level employees and those with programmes to support people with barriers to employment.
Your impact on the community
This section of the assessment evaluates how your company engages with and benefits the communities it works with. We’ll cover things like diversity, equity & inclusion, your economic impact, community engagement, and your supply chain. This section also recognises things like fair trade sourcing, cooperative models, and formal charitable giving commitments.
Your company’s impact on the environment
This section looks at your company’s environmental management practices and their impact. This includes the direct impact of a company’s operations and when applicable its supply chain and distribution channels. This section also recognises companies with environmentally innovative production processes and those that sell products or services that have a positive environmental impact.
Your company’s customers
This section evaluates a company’s stewardship of its customers through the quality of its products and services, ethical marketing, data privacy and security and feedback channels. This section recognises products or services that are designed to address a particular social problem for or through its customers, such as health or educational products, arts & media products, serving underserved customers and clients, and services that improve the social impact of other businesses or organisations.
The Knowledge Base
The Knowledge Base is B Lab’s proprietary search engine for all things related to becoming or being a Certified B Corporation, as well as using the B Impact Assessment. Find in-depth articles and guides on how to use the B Impact Assessment on the Knowledge Base.
