The Treasury Executive Board is the department’s senior governance and decision-making body for policy, strategy and accountability matters. The board comprises the Secretary, the five Deputy Secretaries and two additional senior executives rotating on a twice-yearly basis.
Michael Coutts-Trotter was first appointed to head a NSW Government department in 2004 and has since led seven agencies. He was appointed Secretary of the NSW Treasury on 22 May 2023, following his appointment as Acting Secretary on 14 April 2023. Before joining the public service, Michael was chief of staff to a NSW Treasurer for seven years. Michael is a fellow of the Institute of Public Administration of Australia.
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Joann Wilkie joined NSW Treasury in February 2019 as Deputy Secretary for the Economic Strategy & Productivity Group. In this role, she leads the delivery of economic and revenue forecasting; provision of advice on economic policy and reform, including on productivity; and engagement with Commonwealth, State and Territories on key national reforms and issues. The NSW Small Business Commissioner and NSW Productivity Commissioner are also anchored in the Economic Strategy and Productivity Group.
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Liz is the Deputy Secretary, Policy and Budget. Prior to this Liz was the CEO of New South Wales’s main economic regulator, the Independent Pricing and Regulatory Tribunal (IPART). She has deep policy expertise and broad experience in senior executive roles across government including at the NSW Department of Premier and Cabinet where she led teams to broker natural resources policy. She was also a Deputy Secretary at the Department of Industry with responsibility for Crown land and regional water.
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Sonya is the Deputy Secretary, Commercial. Prior to this role, Sonya was the Executive Director and Head of the Infrastructure and Structured Finance Unit at NSW Treasury. Sonya joined NSW Treasury in September 2018 following an extensive career in the private sector specialising in PPP and major project procurement.
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Michael Gadiel is the Deputy Secretary of the Procurement Reform and Banking Group. Prior to this he led Treasury’s Centre for Economic Evidence. He has broad experience in Treasury, including leading the Office of the Secretary, economic strategy, productivity reform, justice and emergency services, fiscal strategy, wages policy, budget strategy, economic modelling and forecasting.
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Marina van der Walt is the Deputy Secretary, Financial Management and Services, she re-joined Treasury in November 2022. In this role, she provides executive leadership and strategic direction for the state sector financial reporting frameworks and governance, and also leads the Treasury functional divisions, including People and Culture, Finance, Information Technology and Communications.
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Julie is an information technology executive with more than 20 years’ experience across a broad range of industries including legal, utilities, engineering, and professional services. She has led all aspects of information technology functions, both in Australia and overseas. Julie has extensive commercial experience and is known for working collegiately with multiple customers and advocating for the best operational outcome.
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Marsha joined NSW Treasury in 2013. She is currently Executive Director of the Strategy, Delivery and Reviews Division, responsible for leading budget and expenditure reviews, improving gender equality and women’s economic outcomes across the sector, budget policy reform and supporting industrial relations processes.
Learn MoreLast updated: 28/04/2025
NSW Treasury pays respect to the Traditional Custodians and First Peoples of NSW and acknowledges their continued connection to country and culture.
