Besides studies in philosophy and theology, Benny Aguiar graduated in Economics from St. Xavier's College, Bombay (now Mumbai) and in Education from St. Xavier's Institute of Education, Bombay. After a short stint of teaching English and History, he was appointed Assistant Editor and later, in 1961, as Editor of the 154-year-old Catholic weekly, The Examiner of Bombay. From 1967 to 2000, he was Indian correspondent for the international Catholic weekly, The Tablet of London. In 1994, he served as the Editor of the Indian Currents, Delhi. In 1965, he covered the three months long, epoch-making last session of the Catholic Church's Second Vatican Council, and later, three synods of Bishop in Rome for The Examiner. In 1991, he wrote a chapter “The Impact of the Council of India and Sri Lanka” for Modern Catholicism, edited by Adrian Hastings and published by Oxford University Press.
He also wrote for The Month (England), The National Catholic Register (USA), 30 Giorni (Rome) and The Times of India, Bombay. He was the President of the Indian Catholic Press Association and the South Asia Catholic Press Association.