She is currently serving as the Chairperson of the Ulu Pandan Youth Executive Committee for the Young PAP (YPAP), the PAP's youth wing, and a member of the Community Development Welfare Fund Committee.
Tin is married to Ng How Yue, Second Permanent Secretary in the Ministry of Trade and Industry and formerly a Principal Private Secretary to Prime Minister Lee Hsien Loong.
Tin Pei Ling has a baby that was born on 5 August 2015, and was named Ng Kee Hau.