Thierno Fall Appointed as Managing Director at BDO USA | Leading with Precision, Purpose, and Global Tax Strategy Excellence
In August 2025, Thierno Fall stepped into the role of Managing Director at BDO USA, marking a significant milestone in a career defined by technical mastery, leadership integrity, and a deep commitment to delivering value through strategic tax advisory. Based in Greater Philadelphia, Thierno’s journey reflects not only years of consistent excellence in corporate and international tax but also his ability to lead with vision, drive transformation, and foster collaboration across complex business environments.
With over 13 years of experience across Big Four and top-tier advisory firms, Thierno has built a reputation for precision, analytical depth, and client-centric leadership. His appointment as Managing Director signifies both recognition of his expertise and BDO’s continued investment in strengthening its tax advisory practice through leaders who embody excellence, innovation, and integrity.
Leadership at BDO USA: Driving Tax Innovation and Advisory Excellence
Since joining BDO USA in November 2020, Thierno has been an integral part of the firm’s tax leadership, initially serving as Tax Senior Manager before ascending to Managing Director. Over the past five years, he has led numerous engagements focused on corporate and partnership taxation, international structuring, and compliance for diverse industries — from financial services and technology to manufacturing and professional services.
His leadership at BDO centers around three key priorities:
- Strategic tax planning that supports clients’ long-term business growth and global operations.
- Collaborative advisory leadership, ensuring that BDO’s multidisciplinary teams deliver end-to-end tax solutions that integrate accounting, compliance, and risk management.
- Mentorship and people development, where Thierno actively empowers teams to think strategically, innovate responsibly, and deliver with precision.
Thierno’s approach reflects his belief that modern tax advisory extends beyond compliance — it is about creating sustainable frameworks that enable organizations to scale, compete, and thrive in an evolving global economy. His leadership style is defined by empathy, transparency, and accountability — qualities that have positioned him as a trusted advisor to both clients and colleagues.
A Legacy of Excellence at EY: Building Global Tax Expertise
Before joining BDO, Thierno spent over eight years at EY, where he cultivated a robust foundation in global tax management and advisory. His tenure at EY was marked by progressive leadership roles, including Staff – Tax Manager and Tax Senior Manager in the New York City Metropolitan Area.
At EY, Thierno led teams that advised multinational corporations on U.S. federal and international tax compliance, structuring, and planning strategies, helping clients navigate cross-border complexities with confidence. He played a pivotal role in aligning business objectives with regulatory requirements, ensuring tax efficiency while maintaining ethical and transparent compliance practices.
His ability to balance strategic foresight with operational detail earned him recognition among peers as a problem solver with an exceptional grasp of both global tax frameworks and local compliance nuances. During his time at EY, Thierno also focused on leadership development and cross-functional collaboration, mentoring rising professionals and fostering a learning culture within his teams.
Strategic Impact and Core Strengths
Throughout his professional journey, Thierno Fall has demonstrated a consistent pattern of impact grounded in three core leadership strengths:
- Technical Excellence and Analytical Rigor – A deep understanding of U.S. and international tax systems, mergers and acquisitions, and corporate restructuring, enabling clients to make informed decisions with clarity and confidence.
- Client-Centered Advisory – Building lasting relationships based on trust, responsiveness, and results, ensuring that every engagement drives measurable business value.
- People and Performance Leadership – Empowering teams to operate at their highest potential, fostering an inclusive environment where collaboration and innovation thrive.
These strengths have made Thierno not just a skilled tax strategist but also a leader capable of guiding complex engagements with professionalism, agility, and purpose.
A Leader for a Transforming Industry
The tax landscape is evolving faster than ever, shaped by digital transformation, global regulation, and economic shifts. In this dynamic environment, Thierno stands at the forefront of guiding clients through change — translating uncertainty into opportunity through insight-driven advisory.
As Managing Director at BDO USA, he continues to focus on enhancing operational effectiveness, integrating digital solutions into tax planning, and ensuring clients’ compliance strategies align with their broader business ambitions. His work contributes directly to BDO’s mission of delivering exceptional client service through knowledge, innovation, and integrity.
Thierno’s leadership reflects the future of professional services — one where expertise meets empathy, and where technical mastery is balanced with human understanding.
Inspiring the Next Generation of Leaders
Beyond his professional achievements, Thierno is deeply committed to mentorship and professional growth. He actively champions initiatives that foster diversity, inclusion, and career development within the tax and consulting profession. Colleagues describe him as a leader who listens first, communicates with purpose, and inspires confidence through example.
His story is a reminder that leadership is not about titles but about impact, consistency, and contribution — creating an environment where excellence becomes collective and success is shared.
CXO Gateway Reflection
At CXO Gateway, we celebrate Thierno Fall as an inspiring example of leadership in action — a professional whose journey from EY to BDO USA embodies integrity, perseverance, and strategic excellence. His career exemplifies how thoughtful leadership and technical expertise can redefine advisory practices, strengthen client partnerships, and shape the future of financial and tax consulting.
Thierno’s rise to Managing Director is not only a testament to his professional acumen but also a beacon for emerging leaders striving to make a meaningful impact in the professional services landscape.