Professor Tan was a member of the Council on Corporate Disclosure and Governance which sets accounting and disclosure standards in Singapore. He also chaired the KK Women's and Children's Hospital's Medifund Committee, the Singapore National Committee for Pacific Economic Cooperation, and the Meridian Junior College advisory committee. He was also a member of the board of directors of four Singapore listed companies, serving as chairman of the Audit Committee in two of them, namely Singapore Reinsurance Corporation Limited and Kim Eng Holdings Limited, and has served as a session chairman at the PECC International Conference. He had also served as advisor to a various other community organizations, including the Charted Institute of Logistics and Transport, Singapore, and Habitat for Humanity Singapore. He was also a member of several awards committees, including the Singapore Youth Award Panel 2006-07, which selected the recipients of the "highest youth accolade in Singapore", and the International Management Action Award awards council. Tan was awarded the Public Service Medal at Singapore's 2009 National Day Awards in his capacity as chairman of the Medifund Committee of KK Women's & Children's Hospital. Other awards include the SMU Most Inspiring Teacher and the School of Accountancy's Most Outstanding Teacher awards in 2006, and the Service to Education Award by the Ministry of Education for his contribution as chairman of the Meridian Junior College Advisory Committee. He also sponsored the Professor Tan Teck Meng Gold Medal Award, worth a total of S$2,000, to be given annually to a top graduating Bachelor of Accountancy student, and the Tan Tee Chee & Tsan Kah Ngooh Award, named after his parents, and given annually to 3 outstanding students who have demonstrated excellence in co-curricular activities. Professor Tan's research interests included corporate governance, entrepreneurship and financial accounting.