Credit: Deloitte Luxembourg

On Thursday 27 November 2025, Deloitte Luxembourg released the seventh edition of its "Impact Report", outlining its activities and contributions across markets and industries over the past year.

According to Deloitte, the report is structured in alignment with the European Sustainability Reporting Standards under the EU Corporate Sustainability Reporting Directive. The firm noted that it seeks to apply the same technical discipline to its own disclosures as it supports clients to apply to theirs. This new approach includes more rigorous data processes and retroactive adjustments to fiscal year (FY) 2024 information.

The report follows the firm's strategic pillars of raising ambition (Higher), deepening commitment (Further) and strengthening collaboration (Together). These principles "shaped a year defined by shared effort, transparent reporting and community engagement" through initiatives such as the MOMENTUM sustainability conference, the Deloitte Climate Fund and the work of the Deloitte Foundation. Deloitte also continued its involvement in national and European conversations through BEYOND, its forum on technology, competitiveness and the future of regulation.

"In a period marked by rapid advances in AI and GenAI, evolving regulation and growing expectations around transparency, the firm continues to broaden its capabilities while supporting transformation with purpose and respect," said John Psaila, CEO and Managing Partner of Deloitte Luxembourg. "With Deloitte's multidisciplinary model, global reach, deep expertise and strong heritage, we are well positioned to accompany clients, people and society through both technological and sustainability-related transitions."

Environmental, Social & Governance (ESG)

Deloitte member firms continued progressing towards their net-zero objectives, guided by Deloitte Global's net-zero by 2040 target and Transition Plan, which builds on the WorldClimate ambition launched in 2020.

The firm's diversity, equity and inclusion committee advanced programmes including GLOBE, Women in/to Leadership and the Working Parents Programme. Deloitte Luxembourg also renewed its support as a signatory to the Diversity Charter Lëtzebuerg.

Governance remained a priority, with Deloitte emphasising its continued efforts around its shared values, governance standards and code of conduct.

Business performance & transformation

Audit and Assurance recorded double-digit growth and continued responding to increasing expectations.

Advisory and Consulting strengthened its work in automation, artificial intelligence (AI) integration and new delivery models. The practice supported major transactions, observed continued consolidation in wealth management and advanced its ZeroOps strategy, aimed at reshaping operating approaches in banking.

Tax recorded solid growth amid regulatory and geopolitical changes, supporting organisations adapting to new tariffs and global trade frameworks and expanding the geographical reach of its integrated accounting services.

"The power of together"

Deloitte Luxembourg reported gross revenues of €535 million in FY2025, representing a year-on-year increase of 5%. The firm highlighted that net revenues have grown at a compounded annual rate exceeding 10% over the past four years.

Deloitte Luxembourg currently employs approximately 2,600 professionals with an average age of 33, including 48% women and colleagues representing 98 nationalities. In FY2025, each employee received an average of 46 hours of training and the firm celebrated 507 promotions across its service lines.

"This year marked our 75th anniversary in Luxembourg. Celebrating with our people, alumni and clients reminded us that what endures is never what we build, but who we build it with," said John Psaila. "Our teams recognise that responsibility today lies in combining sound performance with thoughtful practice, including the sustainability expectations shaping our world. The journey requires discipline and clarity of purpose, yet it remains an opportunity to help organisations strengthen their businesses, support the society around them and contribute to the world that follows."

The full report, featuring detailed information across business, governance, environmental and social pillars, is available here.