In 1868 he returned to India and was admitted to the bar, and soon established a practice for himself in a profession which was till then dominated by British lawyers.
It was during a legal defence of Arthur Crawford he pointed out the need for reforms in the Bombay municipal government, and later he drafted the Bombay Municipal Act of 1872, and is thus considered the father of Bombay Municipality.
Eventually, Sir Pherozeshah Mehta left his law practice to join politics.
He became the Municipal commissioner of Bombay Municipality in 1873 and its President four times - 1884, 1885, 1905 and 1911.
He was chosen the president of Indian National Congress in 1890.
In Mumbai, even today Sir Pherozeshah Mehta is a much revered man, there are roads, halls and law colleges named after him. He is respected as an important inspiration for young Indians of the era, his leadership of India's bar and legal profession, and for laying the foundations of Indian involvement in political activities and inspiring Indians to fight for more self-government.
In Mehta's lifetime, few Indians had discussed or embraced the idea of full political independence from Britain. As one of the few people who espoused involvement of the activity of Indians in politics, he was nicknamed Ferocious Mehta."