Guide

What B Corp Certification Actually Means

The most demanding mainstream label — and the one most often misread. Here is what the seal proves, what it does not, and how to check it in a minute.

By Leif List · Updated August 7, 2026 · ~8 min read

B Corp is the rare sustainability label that looks at the whole company rather than one product. That makes it one of the most useful signals on a shelf — and one of the easiest to over-read. Here is what the seal actually certifies.

It certifies a company, not a product

Almost every other seal you will see is product-scoped. USDA Organic certifies what is in a jar. EPA Safer Choice certifies a formula. Leaping Bunny certifies a testing policy. B Corp is different: it assesses the business behind the product — how it is governed, how it treats the people who work for it, what it does to the environment, and what it returns to its community.

That breadth is the point. A company can make a genuinely organic snack in a factory with poor labour practices, and the organic seal will not notice. B Corp is designed to notice.

What the assessment measures

Certification is run by B Lab, a non-profit, through the B Impact Assessment. Companies are scored across five areas:

  • Governance — mission, ethics, transparency, and who the company is accountable to.
  • Workers — pay, benefits, training, ownership, health and safety.
  • Community — supply-chain practices, local economic impact, diversity and inclusion.
  • Environment — energy, emissions, water, waste, land use.
  • Customers — whether the product itself creates a positive outcome for the people who use it.

Under the long-standing model, a company needed to clear a verified score of 80 out of 200 to certify. Reaching 80 is genuinely hard — the median unverified company that starts the assessment scores far below it — but it is worth understanding what a threshold score implies: a company can pass by being outstanding in two areas and unremarkable in the rest. The seal tells you the total cleared the bar. It does not tell you where the points came from.

B Lab has published revised standards that move away from a single point threshold toward a set of requirements a company must meet across every topic area, precisely to close that averaging gap. Expect the bar to be higher, and more evenly distributed, for companies certifying and recertifying under the new rules.

The part most people miss: B Corp is the only mainstream certification that requires a legal change. To certify, a company must amend its governing documents so directors are obliged to weigh workers, community and the environment alongside shareholder returns. That clause outlasts any particular executive, and it is arguably worth more than the score.

What it does not tell you

  • It is not a carbon rating. Environment is one of five areas. A company with a modest footprint and excellent worker policies can score the same as the reverse.
  • It is not continuous. Certification is reassessed on a multi-year cycle, so a badge reflects the company as verified at its last recertification — not necessarily today.
  • It does not cover a parent company. Several certified B Corps are subsidiaries of large conglomerates that are not certified and would not qualify. The certification is real; it just applies to the subsidiary, not the group above it. This is the single most common way the seal gets misread.
  • It is self-reported, then verified. Companies submit evidence and B Lab reviews it. That is far stronger than a marketing claim, and weaker than an on-site audit of every site.

Check any brand in about a minute:

  • Search the brand in B Lab's public directory at bcorporation.net. If it is not listed, it is not certified — whatever the packaging suggests.
  • Check the certification date. An old date with no recent recertification is worth a second look.
  • Look at the score breakdown, which B Lab publishes. A company at 81 with most of its points from Governance is a different proposition from one at 120 spread evenly.
  • Check who owns the brand. A certified subsidiary of an uncertified parent is a genuine but narrower claim.

How Leif uses it

We treat B Corp as one of our strongest verifiable signals, but we do not take a brand's word for it. Cert claims are checked against the public B Corp registry, and where a brand's status has lapsed we suppress the badge rather than display a certification that is no longer live. A verified certification is shown with its source; an unverifiable one is not shown as verified.

It is also only one input. A B Corp seal does not on its own produce a high rating on Leif, because our assessment weighs the public record — practices, controversies, commitments — alongside certifications. You can read how scoring works, see our full methodology, or look at a certified brand like Dr. Bronner's, Patagonia or Cotopaxi to see how the pieces combine.

B Corp is one seal among many, and each has a different catch. Our Sustainability Certifications Explained guide covers the rest, and How to Spot Greenwashing covers what to do when there is no certification at all.

Sources & further reading: B Lab, B Corp Certification and the public B Corp directory; B Lab's published standards documentation.