He became a member of the Bombay Legislative Council, the advisory body to the British government, in the same period [1899] thus starting a career as a parliamentarian.

Lord Thomas Sydenham, the then Governor, the Chief Justice of Bombay High Court, the Press and the general public supported the Bill accordingly.

Abul Kalam Azad hailed his presidential speech at the AIML meeting in Agra as "the first in Islamic political literature soaked in Indian nationalism.

Sir Ibrahim Rahimtoola also proposed the British India Government to take due measure for the defense of vast Indian sea-coast.

The Imam also buttressed his views and according to N.M. Dumasia in 'The Aga Khan and His Ancestors' (Bombay, 1939, p. 237) that, 'The Aga Khan is strongly in favor of the view advanced by Sir Ibrahim Rahimtoola that for the defense of the extensive sea-coast of India, there should be sufficient Indian material.'

In the beginning of 1918, Sir Mahadev Chaubal retired from his membership of the Government of Bombay and the choice thus fell on Rahimtoola to fill that vacancy.

Rahimtoola at the earnest request of then Governor Sir George Lloyd accepted the presidency of the council.

He was a delegate to the first Hindu-Muslim Unity Conference, Allahabad, 1911 under the President ship of Sir William Wedderburn.

According to 'The Aga Khan and His Ancestors' (Bombay, 1939, p. 180), 'In the Bombay Presidency the community over which the Aga Khan presided with such distinction possess such eminent leaders as Sir Ibrahim Rahimtoola who, like his revered leader, valiantly pressed Muslim claims.'

Rahimtoola worked with pro-Congress leaders like Muhammad Ali Jauhar, Muhammad Ali Jinnah[4] and the Aga Khan, and brought in an amendment to the constitution of the League, adding statement 2(d), seeking “attainment under the aegis of the British Crown a system of self Government suitable to India through constitutional means...” This marked an important shift in Indian Islamic attitudes from a position of loyalty to the government, to an alignment with the mainstream Hindu groups like the Indian National Congress.

His younger son Habib Rahimtoola was a close confidant of Jinnah and became one of the founding persons of Pakistan.

[7] He was appointed a Knight Commander of the Order of the Star of India (KCSI) in the 1923 Birthday Honours list,[8] and also received the silver Kaisar-i-Hind medal around the same time for his valuable services and generosity.

Aga Khan III [Sultan Mohammed Shah] regarded Sir Ibrahim highly and commented that he was the most distinguished member our community has produced in Western India.

Sir Ibrahim Rahimtoola's portrait is present in the Lok Sabha Chamber of the Indian Parliament at Delhi.