The two phases that determine your timeline
B Corp certification has two distinct phases. Most businesses treat them as one, which is the first mistake.
Phase 1 is preparation: closing gaps in your B Impact Assessment score, building the documentation B Lab needs to verify, and organizing your evidence. This phase is entirely within your control. How fast you move depends on how organized you already are and how much capacity you can dedicate to the work.
Phase 2 is B Lab's verification process. After you submit, B Lab schedules your verification call and reviews your documentation. Their review window currently runs roughly two to four months depending on submission volume. You have almost no control over this phase once you've submitted a clean file.
Most of the variance in how long B Corp certification takes sits in Phase 1. Fix that, and the timeline becomes predictable.
What a realistic how-long-does-B-Corp-certification-take answer looks like
A business that enters the process organized — HR policies drafted, a governance structure in place, supplier and environmental data accessible — can complete Phase 1 in six to twelve weeks. Add B Lab's review window, and you're looking at four to six months total.
A business starting from zero on documentation commonly takes three to six months just to close its scoring gaps. Add B Lab's queue, and nine to fifteen months is the realistic total. Candor's clients average six to eight months from initial gap assessment to certification. That's with structured preparation and consistent forward momentum on both sides.
"Businesses that treat B Corp certification as a side project routinely take twice as long as businesses that structure it as a real initiative."
Carbon footprint measurement is now mandatory under the 2026 B Corp certification standards. Scope 1 and Scope 2 emissions must be measured and documented before you can submit. If your business has never tracked emissions, plan for an additional 2–4 weeks during Phase 1 to gather utility data, run calculations, and document a credible improvement plan. Don't leave this until the end.
What slows businesses down
Three things consistently extend timelines, and all three are avoidable.
Incomplete HR documentation is the most common. The B Impact Assessment weights worker practices heavily, and many small businesses operate their HR through informal agreements rather than written policies. Writing those policies after the fact takes longer than most owners expect. The Workers pillar alone can represent 15 to 20 points — a significant portion of the 80 needed.
Supply chain data gaps are second. The Community section asks detailed questions about where you source materials and services. If that data doesn't exist in a usable format, collecting it adds weeks. Sometimes months.
Competing internal priorities are third and hardest to control. Certification falls behind a product launch, a key hire, a busy season. It's understandable. It's also the single biggest reason timelines stretch past a year.
Submitting too early is a real risk. Roughly a third of businesses that submit for B Corp certification don't pass their first verification. The most common reason: submitting before documentation fully supports the claimed score. A failed submission adds two to four months to your total timeline. Get the assessment right before submitting.
How to move faster
The fastest path through B Corp certification starts with knowing exactly where you stand before you begin. That means a scored B Impact Assessment with specific gap analysis, not a rough estimate based on assumptions.
From there, sequencing matters. Closing governance gaps first tends to unlock points across multiple pillars. HR documentation comes next. Supply chain data collection can often run in parallel once you know which questions require it.
You do not need a perfect score. You do not need to restructure your business. The goal is reaching 80 points with clean, verifiable documentation ready for the call. The audit will tell you what actually needs to change. Everything else is scope creep.
Candor runs that initial assessment and structures the preparation roadmap as the first step of every engagement. If you want to know how long your specific business would take, start there.