The following causes were responsible for the conflict between Siraj-ud-daulah and the British :
- The British gave no gifts to Siraj-ud-daulah on his appointment as the Nawab of Bengal. Siraj-ud-daulah was therefore, angry with the British.
- The British gave shelter to a deserter of Siraj-ud-daulah’s service. The Nawab demanded the return of the traitor, but the British turned a deaf ear to his demand.
- The English started deploying forces in Calcutta (Kolkata) and in spite of refusal of the Nawab to allow them to keep their forces there, the British did not withdraw them.
- There was misappropriation of funds in the Dacca treasury of Nawab and the Nawab held that the misappropriated amount was in the possession of the English. He asked them to return the amount but the English refused.