Achieve B Corp V.7 Certification with Expert GHG Verification

The release of B Corp Standards Version 7 in 2025 marks a fundamental shift in what it means to be a purpose-driven business. For the first time, B Lab has introduced mandatory Climate Action requirements that cannot be offset by strong performance in other impact areas.

Large companies must now measure and verify their complete GHG emissions inventory annually through an independent, accredited third party. This isn't optional - it's a prerequisite for certification and recertification from 2026 onwards.

Carbonology provides the independent, accredited verification services you need to meet B Corp V.7's rigorous Climate Action requirements while demonstrating genuine commitment to limiting global warming to 1.5°C.
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What's Changed in B Corp V.7?

Version 7 introduces a new structure built around seven mandatory Impact Topics, with Climate Action taking centre stage. Unlike previous versions where companies could compensate for weak environmental performance with high scores elsewhere, V.7 establishes non-negotiable baseline requirements.
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Key Requirements by Company Size

Large Companies (typically >250 employees or significant revenue thresholds):

Annual GHG Measurement: Measure complete Scope 1, 2, and 3 emissions following the GHG Protocol methodology, with no exceptions for missing categories unless genuinely inapplicable or unavailable.

Independent Verification: Obtain annual third-party verification from an accredited certification body operating under ISO 14064-3 or equivalent standards. The verification body must be accredited by the Global Accreditation Forum (GAC), formerly the International Accreditation Forum (IAF) member such as UKAS, DAkkS, COFRAC, ENAC, or RvA.

Science-Based Targets: Set validated science-based targets aligned with limiting global warming to 1.5°C, including a net-zero target for 2050 and interim milestones every five years. Targets must cover at least 90% of Scope 3 emissions.

Climate Transition Plan: Develop and publish a comprehensive climate transition plan by Year 3 that addresses major emission sources, outlines reduction strategies, includes stakeholder engagement plans, and demonstrates alignment with a just transition.

Small and Medium-Sized Businesses:

• Must develop and publish a Climate Action Plan at Year 0
• Must demonstrate progress against the plan by Year 3
• While not mandatory, measurement of GHG emissions is strongly recommended to credibly demonstrate progress and satisfy customer due diligence requirements

Timeline and Application

• 2025: Existing B Corps recertifying in 2025 will do so under Version 6
• 2026 onwards: All new certifications and recertifications must meet Version 7 requirements
• Year 0, Year 3, Year 5: Phased implementation of Climate Action requirements, with increasing expectations at each milestone

Why Independent Verification Matters

B Lab requires independent verification to ensure the credibility and accuracy of GHG data. Verification bodies must:

• Be completely independent from organisations that prepare the emissions data
• Hold accreditation under ISO 14065 from an GAC member accreditation body
• Follow ISO 14064-3 verification standards or equivalent rigorous methodologies
• Provide objective, impartial assessment of emissions calculations and supporting documentation

As an independent verification body accredited to ISO 14065/ISO 17029, we deliver the rigorous, objective assessment that B Lab requires while helping you build robust carbon management systems for the long term.

Accredited GHG Emissions Verification

Our core service for B Corp compliance includes:

Complete Scope 1, 2, and 3 Verification: Independent verification of your entire GHG inventory following ISO 14064-3 standards, covering all emission scopes and relevant categories required by B Lab.

GHG Protocol Compliance: Verification that your emissions measurement methodology aligns with the GHG Protocol Corporate Accounting and Reporting Standard, ensuring consistency with B Corp requirements.

GAC/IAF-Accredited Assurance (available from April 2026): Our accreditation through member bodies (UKAS) ensures B Lab will accept our verification statements as meeting their third-party verification requirement.

Annual Verification Services: Streamlined processes for recurring annual verification, building efficiency year-over-year while maintaining rigorous standards.

Pre-Certification Gap Analysis

Before pursuing certification or recertification, we help you assess readiness:

• B Corp Climate Action Readiness Assessment: Comprehensive review of your current GHG measurement practices, data quality, and documentation against B Corp V.7 requirements.
• Data Quality Evaluation: Identification of gaps in emission factor selection, activity data collection, calculation methodologies, and supporting documentation.
• Timeline and Resource Planning: Realistic roadmap for achieving verification-ready status, including timelines, resource requirements, and cost estimates.

Climate Transition Plan Support

For Large companies facing Year 3 requirements, we provide:

• Baseline Verification: Verified baseline emissions that form the foundation for credible target-setting and transition planning.
• Target Validation Support: Guidance on setting science-based targets that meet both B Corp and SBTi requirements, with documentation to support validation processes.
• Progress Tracking: Annual verification services that track progress against targets and provide the data needed for transparent climate transition plan updates.
• Integration with Other Frameworks

By verifying annually you create efficiency across multiple reporting requirements:

• CSRD/ESRS Alignment: Coordinate B Corp verification with CSRD reporting requirements, particularly ESRS E1 (Climate Change), to reduce duplication and audit burden.
• CDP Integration: Align verification activities with CDP disclosure requirements, ensuring consistency across voluntary and mandatory reporting.
• Multi-Framework Strategy: Develop verification approaches that satisfy B Corp, CSRD, CDP, TCFD, Ecovadis and other disclosure frameworks simultaneously.

1. Assess Your Current Position

Evaluate whether your current GHG measurement and management systems meet B Corp V.7 requirements. Identify gaps in scope coverage, data quality, calculation methodologies, and documentation. Determine your company size classification and applicable requirements.

2. Build or Enhance GHG Measurement Systems

Establish comprehensive GHG accounting processes aligned with ISO 14064-1 that cover all three scopes according to the GHG Protocol. Prioritise data quality improvements, particularly for Scope 3 categories. Implement systems for ongoing data collection, calculation, and documentation that will support annual verification.

3. Engage Independent Verification

For Large companies, engage an accredited verification body at least 12 months before your certification or recertification date. Schedule pre-verification gap analysis to identify and address issues before formal verification. Plan for annual verification to become a routine part of your sustainability calendar.

4. Develop Climate Action Plans

All companies must develop Climate Action Plans or Climate Transition Plans appropriate to their size category. Ensure plans are based on verified baseline data (for Large companies) or best available estimates (for Small/Medium). Include specific, measurable actions with clear timelines and responsibilities.

5. Set Science-Based Targets

Large companies should begin the SBTi validation process early, as it can take several months. Ensure targets are set based on verified baseline data and cover the required scope of emissions. Plan for interim target milestones in 2030 and establish processes for annual progress tracking.

6. Integrate with Broader ESG Strategy

Align B Corp verification with other sustainability reporting requirements you face (CSRD, CDP, TCFD, etc.). Create efficient processes that satisfy multiple frameworks without duplicating effort. Use B Corp requirements as a foundation for comprehensive climate action that serves multiple stakeholder needs.

Why Choose Carbonology for B Corp V.7 Verification?

IAF-Accredited Independence: Our verification body holds accreditation under Carbon Disclosure Project (CDP) and ISO 14065/ISO 17029 from April 2026 from IAF member accreditation body (UKAS), meeting B Lab's requirement for independent third-party verification.

B Corp Expertise: Deep understanding of B Corp V.7's specific requirements, including the nuances of Climate Action requirements at different company sizes and certification stages.

Technical Excellence: Extensive experience verifying GHG inventories across Scope 1, 2, and 3, including the challenging Scope 3 categories that often pose the biggest compliance hurdles.

Practical Approach: We balance rigorous verification standards with technical expertise in Carbon Management, helping you build efficient, effective systems rather than just checking boxes.

Multi-Framework Integration: Expertise in aligning B Corp verification with CSRD, CDP, TCFD, ECGT and other frameworks to maximize value from a single verification process (Verify once – report to many).

Proven Track Record: Established reputation for high-quality verification services across diverse sectors and organisational sizes, with recognition for accessible, professional service.

Timely Support: Understanding the urgency of certification timelines and ready to work efficiently to meet your B Corp certification or recertification deadlines.

Get B Corp V.7-Ready with Carbonology

Whether you're pursuing B Corp certification for the first time or preparing for recertification under Version 7, don't leave verification until the last minute. Contact Carbonology today for a confidential consultation about your GHG measurement and verification needs. Our team will help you assess your current capabilities, identify what's needed to meet B Corp V.7 requirements, and develop a clear roadmap to certification success.