Jérôme Eustache Partner

Professional Background

Jérôme Eustache is a Chartered Accountant and Statutory Auditor at Forvis Mazars, with over 24 years of experience. He specializes in the audit and advisory of organizations within the Social and Solidarity Economy (ESS).

He has developed deep expertise working with associations, foundations, endowment funds, and non-profit organizations, whether or not they appeal to public donations, all pursuing public interest missions.

He is widely recognized as a key contributor to the development of the ESS sector within Forvis Mazars, supporting organizations across France.

Sector Expertise & Advisory Services

Jérôme Eustache supports a wide range of ESS entities, including:

  • Associations and foundations
  • Corporate foundations and endowment funds
  • Professional and non-profit organizations

His work covers multiple domains such as solidarity, social action, education, research, environment, culture, sport, and healthcare-related missions.

He intervenes on a variety of assignments, including:

  • Audit and internal control system development
  • Risk mapping and financial process optimization
  • Strategic and operational support for financial management
  • Organizational structuring of non-profit entities
  • Professional Involvement & Industry Contributions

Jérôme Eustache is actively involved in several professional bodies and working groups:

  • Member of the Associations & Foundations Commission of the CNCC
  • Participant in working groups on public-interest and regulated non-profit entities
  • Contributor to IFACI (French Institute of Audit and Internal Control) working groups on associations and foundations

His long-standing involvement reflects more than 20 years of commitment to the non-profit and social economy sector, contributing to the evolution of auditing and governance practices adapted to ESS organizations.

Areas of Expertise

  • Social & Solidarity Economy (ESS) Advisory
  • Audit of Associations, Foundations & Non-profits
  • Internal Control & Risk Management
  • Financial Process Optimization for ESS Entities
  • Public Interest & Impact Organizations
  • Governance & Compliance in Non-profit Sector
  • Sector-specific Audit Methodologies (ESS)
  • Regulatory Frameworks for Associations & Foundations

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