From left to right - Bernard David, Christiane Chadoeuf, Patrick Laurent, Pierre Masset and John Psaila
By pairing operational excellence with forward-looking solutions, the Firm supports organisations as they strengthen performance, adapt to regulatory change, and create sustainable growth.
Deloitte Luxembourg has released its seventh Impact Report, marking another year of contribution across markets and industries. The report is structured in alignment with the European Sustainability Reporting Standards under the EU Corporate Sustainability Reporting Directive, reflecting the Firm’s commitment to apply the same technical discipline to its own disclosures as it supports clients to apply to theirs. This enhanced approach includes more rigorous data processes and retroactive adjustments to FY2024 information.
The report continues to follow 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 MOMENTUM, the Firm’s annual sustainability conference, the Deloitte Climate Fund, and the work of the Deloitte Foundation. Alongside these initiatives, the Firm continued to shape both national and European conversations through BEYOND, its flagship forum designed to create the space where real debate happens 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,” says John Psaila, CEO and Managing Partner. “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, and Governance impact grounded in materiality
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. This reflects Deloitte’s belief that reducing environmental impact is not only responsible but central to long-term risk management and value creation.
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 asignatory to the Diversity Charter Lëtzebuerg, reinforcing its focus on building a workplace where every person can develop and contribute.
Governance remained a priority. Deloitte continued embedding its Shared Values, governance standards, and Code of Conduct into everyday practice, supported by rigorous risk management, responsible business conduct, and continued investment in ethical and data-security training. This disciplined approach reflects the increasing scrutiny and expectations placed on professional service firms.
Business performance and transformation
Audit and Assurance delivered double-digit growth, providing stakeholders with confidence in both financial and non-financial information. The practice continued meeting rising expectations while maintaining the highest standards of quality, reliability, and excellence.
Advisory and Consulting strengthened its work in automation, AI integration, and new delivery models, enabling teams to respond to client needs with greater scale and speed. The practice supported major transactions, observed continued consolidation in wealth management, and advanced its ZeroOps strategy, which is reshaping operating approaches in banking.
Tax recorded solid growth in a period of significant regulatory and geopolitical change. The practice supported organisations adapting to new tariffs and global trade frameworks and expanded the geographical reach of its integrated accounting services.
The power of together
Deloitte Luxembourg continued its solid growth trajectory in FY2025, with gross revenues reaching €535 million, an increase of 5 percent year on year. More importantly, the Firm’s net revenues have grown at a compounded annual rate exceeding 10 percent over the past four years, underscoring a disciplined, step-by-step trajectory built on consistency, rigour, and a clear long-term direction. The Firm now numbers approximately 2,600 professionals with an average age of 33, including 48 percent 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, reflecting a sustained investment in people and capability.
“This year marked our seventy-fifth 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,” says 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.”
Access the Impact Report
The full report, featuring detailed information across business, governance, environmental, and social pillars, is available here.
