The eparchy was established to cater the spiritual needs of the Syro Malabar Christians based in the Indian State of Maharashtra including the metropolitan cities of Mumbai, Pune and Nasik.

and other parts of our country, started in nineteen fifties and sixties after Indian Independence, seeking employment and better prospects of life.

Hundreds of thousands of Christians of the Syro-Malabar Church who thus migrated were in a totally alien atmosphere with regard to their religious and spiritual life.

In order to preserve their faith and cultural heritage intact, the Syro-Malabar Catholics organized several spiritual exercises like the Lenten retreats and confessions, prayer meetings, Holy Mass Celebrations, etc.

In the light of the teachings of the II Vatican council, the problems related to the migration as well as the theology and ecclesiology of individual Churches were taken for discussions in CBCI meetings especially by Mar Joseph Powathil.

The conclusions, suggestions, recommendations of the seminar were adopted by the CBCI and Committee for Rites was formed to deepen the matter.

It was Pope John Paul I, who appointed an Apostolic Visitor, Mar Antony Padiyara, on 8 September 1978 to study the situation of the migrant Syro-Malabar Catholics.

On 1 February 1986 when Pope John Paul II addressed the Bishops of India in Delhi, he assured them of an earlier settlement of the problem and elicited the co-operation of all concerned.

On 30 April 1988, Pope John Paul II established the Eparchy of Kalyan comprising the areas of Bombay, Pune and Nasik.