Mrs Mildred Tan is Chairman of Singapore Totalisator Board (Tote Board), Chairman of Singapore University of Social Science (SUSS) Board of Trustees, Co-Chair for the Council for Board Diversity and Co-Chair for Global Future Council on the Future of Philanthropy for Climate and Nature, World Economic Forum. She is also Board Director of National University Health System (NUHS), Wing Tai Holdings and AIA (Singapore). She sits on the Council of Presidential Advisers as a member.

She was previously Managing Director of Ernst & Young Advisory Pte Ltd from 2002 to mid-2018. She is known for her extensive work in leading large complex organisational transformation both in the private and public sector.

Mrs Tan was conferred Justice of Peace in 2008, awarded the PBM (Public Service Medal) in 2007 and BBM (Public Service Star) in 2014 for her outstanding community service by the Singapore Government. She was a Nominated Member of Parliament in Singapore from 2009 to 2011.