Sustainability reporting & assurance

A sustainable strategy is good business practice

Why ESG assurance matters

The requirements for sustainability reporting are evolving rapidly. With the introduction of the CSRD, the Omnibus Regulation, and international standards such as ISSB, organizations are challenged to report their ESG performance in a consistent, verifiable, and meaningful way. But the true value of ESG assurance goes beyond regulation:

• Stakeholder trust: verified ESG data strengthens credibility with investors, customers, banks, and regulators.
• Strategic decision-making: reliable ESG information provides insight into risks and opportunities, supporting sustainable transformation.
• Access to financing: ESG performance is increasingly considered in credit ratings and investment decisions.
• Supply chain impact and reputation: even companies without a direct CSRD obligation are asked to provide ESG data within their supply chains. Assurance helps leverage this role strategically.

Assurance with attention: personal, pragmatic, and perfectly aligned with your business

We believe assurance truly adds value when it aligns with what matters to you. That’s why we combine the quality and expertise of a large international network with the personal attention and pragmatic approach of a boutique firm. You won’t get a standard solution from us, but an approach tailored to your sector, strategy, and ambitions.

• Leading quality with boutique attention: Benefit from in-depth knowledge of CSRD, ESRS, GRI, ISSB, and EU Taxonomy, and from a team that truly understands your business.
• Perfectly aligned: Our approach fits your strategy, risk profile, and governance, ensuring ESG assurance not only meets requirements but also creates value.
• Personal and pragmatic: We work closely with you and guide you step by step through the assurance process.

Our services: assurance that goes further

We offer a wide range of assurance and supporting services, including:

• CSRD assurance services
• ESG assurance services
  • VSME assurance
  • Assurance on sustainability KPIs
  • DMA assurance
  • Assurance on qualitative sustainability claims
  • Green bond verification
  • EU Taxonomy assurance

Services related to assurance:

• DMA review / assurance procedures
• Pre-assurance procedures

Non-assurance & quality services:

• Sustainability assurance readiness
• ESG training and workshops
• Sustainability reporting gap assessments
• Development of sustainability reports

The added value for you

• Trust and reputation: Verified ESG data strengthens your position with investors, customers, and regulators.
• Strategic advantage: ESG assurance provides insight into risks and opportunities, supporting sustainable transformation.
• Access to financing: ESG performance is increasingly important in credit ratings and investment decisions.
• Supply chain impact: Even companies without a direct CSRD obligation are asked to provide ESG data within their supply chains. Assurance helps leverage this role strategically.

Moving forward together

Assurance at Forvis Mazars means: attention to what makes the difference for you. We help you not only meet today’s requirements but also prepare for tomorrow’s opportunities. This way, you lead the way in responsible and sustainable business.