The B Corp Requirement Nobody Mentions on the Application Page

The B Impact Assessment (BIA) is a self-assessment questionnaire built around five impact areas: Workers, Community, Environment, Customers, and Governance. For most businesses completing it for the first time, expect two to six hours of focused work. It covers everything from your flexible working policy to how you screen suppliers on environmental grounds.

B Lab publishes a threshold of 80 points out of 200. Hit that and you are eligible to proceed. Miss it and B Lab will tell you which areas cost you most - useful data in itself.

The BIA does not certify you. It qualifies you to enter a process. Your score tells B Lab's analysts where to focus their scrutiny. Certification comes after a separate verification stage.

Once you score 80 or above, B Lab UK places you in a verification queue. An analyst works through your answers question by question, requesting supporting documentation for anything that cannot be verified from the questionnaire alone. That documentation request is where many businesses discover they do not have the evidence they assumed they had.

But verification is not the first thing that stalls applications. Governance is.

B Lab UK refers to it simply as the "legal requirement." Every B Corp must amend its Articles of Association to formally recognise stakeholders beyond shareholders - specifically employees, suppliers, community, and the environment. This is not a commitment you make on an application form. It is a legal change to your company's constitutional document.

For a UK limited company, the process works as follows. You need a special resolution - a 75% majority shareholder vote. The amended Articles must be drafted either by a solicitor or using B Lab UK's published template. Once approved, the updated document is filed at Companies House and becomes part of the public record.

What it costs and how long it takes

The DIY route using B Lab UK's template is legitimate and many SMEs use it without issue. The solicitor route is worth considering if your shareholder structure is complex, if you have investor agreements in place, or if any shareholder is likely to raise questions about the governance implications.

This is not a form you fill in. It is a governance document that can be challenged by future shareholders, invoked in a dispute, and scrutinised during a sale or investment process. A future shareholder buying into your business will be buying into a company with these obligations embedded in its constitution.

Most SMEs that start the BIA are not ready to certify. B Lab designed the BIA partly as a diagnostic tool, and using it that way is sensible - but it helps to know which gaps appear most frequently before you invest time in the assessment.

Of these three, the Articles amendment has the longest fixed lead time - it depends on Companies House processing, solicitor availability, and shareholder scheduling. Evidence gaps close faster when policies and data already exist but are not yet documented. The most common situation is informal policies and consumption data scattered across bills and spreadsheets rather than absent entirely.

The BIA asks about actions taken, not intentions. That distinction matters at every stage. In the Workers section: do you have records of health and safety training, a written flexible working policy, a documented training budget? In the Community section: have you logged charitable donations, employee volunteering hours, and what percentage of your spending goes to local suppliers? In the Environment section: do you know your actual energy consumption, your waste diversion rate, and whether you have screened key suppliers on environmental criteria?

These are not trick questions. They are straightforward operational questions that most businesses can answer positively - if they have kept records. The gap between a business that scores 68 and one that scores 84 is often not the actions themselves but the documentation of those actions.

A structured evidence log - entries with a date, a category, and a measurable outcome - answers BIA questions directly. When the analyst asks for community engagement documentation, you produce a dated log with specific entries rather than a vague description. That specificity is what converts self-reported answers into verified answers.

The commercial advantage is real, which is why businesses are willing to spend the better part of a year on the process. Preparation work is never wasted even if your first BIA falls short of 80 - you are building the operational infrastructure a verified score requires.

Understanding the total timeline is the most practically useful thing you can take from this post. Most B Corp coverage focuses on the score threshold and almost none explains how long the full process actually takes.

The full timeline for a prepared applicant

1. 1
   Articles of Association amendment: 2–6 weeks (run this in parallel with your BIA preparation, not after)
2. 2
   BIA completion and submission: 2–6 hours for the assessment itself, plus time to gather documentation
3. 3
   Queue wait before evaluation begins: up to 5 months
4. 4
   Analyst evaluation: 1–3 months
5. 5
   Total from decision to certification: 8–11 months for a prepared applicant

For an unprepared applicant - one who hits 80+ and then discovers the Articles gap and the evidence gaps - add another three to six months. The Articles alone can take six weeks. Closing evidence gaps in Workers and Community, if policies need writing rather than just documenting, can add a further two to three months.

If you need B Corp certification for a specific tender, contract, or investor round, work backwards. Set your target date, subtract twelve months. That is when you need to begin the Articles process and start building your evidence log - not when you need to score 80 on the BIA.