Khan joined the Central Civil Service of Pakistan in 1964 as an Audit and Accounts cadre. He served in the railway Accounts Service and Defence Finance Department. He was placed in the senior service pool of the
Government of Bangladesh in 1977. He served as a director at
BASIC Bank Limited and
Rupali Bank. He was the chairman of
Agrani Bank. He also did a stint in the Prime Minister's Secretariat. He was the 6th
Comptroller and Auditor General of Bangladesh. He retired in 1999 from the government service. He was the chairperson of the Board of Trustees of
Transparency International Bangladesh. He was the vice-president of
Anjuman Mofidul Islam. He was a director of
MIDAS Financing Limited. He served as an adviser in the caretaker government,
Latifur Rahman Cabinet in 2001. He was in charge of the Ministries of Finance, Planning, Jute, and Textiles with the rank of minister. ==Death==