On his return to India in 1923, he joined the All India Muslim League. Mr. Liaquat Ali Khan was a Member of the United Provinces Legislative Council from 1925-40. He was elected Deputy President of the United Provinces Legislative Council and held that office for six years. He was also Leader of the Democratic Party of the Council.
In 1937, he went to London as a Member of the lndo-British Trade Delegation. When Quaid-e-Azam Mohammad Ali Jinnah reorganized the All India Muslim League in 1936, Mr. Liaquat Ali Khan was elected its Honorary General Secretary. In 1940, he was elected to the Central Legislative Assembly and became the Deputy Leader of the Muslim League. He entered into an agreement with Bhulabai Desai on the question of representation in the Interim Government known as \'LIAQUAT-DESAI PACT, 1945\'.
In 1946, he was appointed as ~. Member of the Governor General\'s Executive Council and the Leader of the Muslim League Party in the Indian Interim Government. He held the portfolio of Finance, being the first Indian Finance Minister. The Budget for 1947-48 which he presented was acclaimed throughout the Country as a \'Poor Man\'s Budget\'.
Liaquat All Khan attended the Simla Conference on behalf of the Muslim League in 1945 and 1946. He was one of the most prominent of the All India Muslim League Leaders and one of the most trusted Lieutenants of Quaid-e-Azam Mohammad Ali Jinnah. He was Muslim League delegate to All Parties Convention at Calcutta in December 1928. He was elected Secretary, All India Muslim League in 1936 and re-elected in 1938,1940, 1941,1942 and 1943. He was Member of the League Central Parliamentary Board in 1936. He moved a resolution regarding certain amendments in League Constitution in its historic 27th Session at Lahore in March 1940. He was Convener, Action Committee of the League and Member Parliamentary Board in 1943; he was also a Member Subjects Committee League\'s Legislator\'s Convention held at Delhi in April, 1945.
On August 14, 1947, he became the First Prime Minister and the Minister for Defence of the new Dominion of Pakistan. He wielded effective power and provided dynamic leadership to Pakistan during the most crucial phase of its history. He signed the \'LIAQUAT-NEHRU PACT\' in 1950 in New Delhi on the problem of minorities. He was the Vice Chairman, Basic Principle\'s Committee of the Constituent Assembly in March 1949, which submitted its report in 1950. Liaquat Au Khan moved a resolution at the All India Muslim League Council Meeting held at Karachi in December 1947 calling for the \'split of the All India Muslim League into two independent Leagues for Pakistan and India\' and was elected Convener, Pakistan Muslim League in the same meeting. He was elected President, Pakistan Muslim League in 1950.
He died at the hands of an assassin on October 16, 1951 while addressing a public meeting at Rawalpindi and was buried in the courtyard of the Quaid-e-Azam\'s Mausoleum.
To celebrate the Birth Centenary of Liaquat Ali Khan, First Prime Minister of Pakistan, Pakistan Post is issuing a commemorative postage stamp of Rs. 1 .25 denomination on October 1, 1995.