He became the finance minister in the Bharatiya Janata Party government which lasted just a month from May-June 1996. In July 2002, he once again became the finance minister. He held the post till the General Election of May 2004. He played a key role in pushing ahead market-friendly reforms.
Jaswant Singh was an officer in the Indian Army in the 1960s. He is one of the few Indian politicians to have held the potfolios of defence, finance and external affairs