The illegal use of Mughal Imperial export trade permits (dastaks) granted to the British in 1717, for engaging in internal trade within India. The British cited this permit as their excuse for not paying taxes to the Bengal Nawab.
British interference in the Nawab’s court, and particularly their support for one of his aunts, Ghaseti Begum. The son of Ghaseti’s treasurer had sought refuge in Fort William and Siraj demanded his return.
Additional fortifications with mounted guns had been placed on Fort William without the consent of the Nawab
British policy of favoring Hindu Marwari merchants such as Jagat Sheth