The East India Company was awarded the 'diwani' or overlordship of Bengal by the empire following the Battle of Buxar in 1764 and the company came to an agreement (known as Permanent Settlement) with Bengali landlords in 1793 to fix revenues to be raised from land. With the Treaty of Yandaboo in 1826, the East India Company finally took control of the both Eastern Assam and Western Assam. However, it was doubtful whether Goalpara was ever included in the Permanent Settlement. According to "The Imperial Gazetteer of India" (Volume 8), a small assessment from the Bijni kingdom was always accepted in lieu of land revenue, though it has sometimes been argued it was nothing more than a tribute. The Imperial Gazetteer of India, which was published in 1902, states that the Bijni family paid a revenue of Rs. 1,500 and cesses amounting to nearly Rs. 19,000 for an estate which covered an area of with an estimated rent-roll of Rs. 2 lakh.