The Diwan was the head of the Diwan-i-Kharaj. He was responsible for collecting taxes and managing the financial affairs of the state.

The main sources of revenue for the Diwan-i-Kharaj were land tax, jizya, kharaj, and zakat.

The land tax in the Delhi Sultanate was called kharaj. It was a tax on agricultural land and was paid by both Muslims and non-Muslims.

The jizya was a tax on non-Muslims. It was a poll tax and was paid by all non-Muslim males over the age of 15.

The kharaj was a tax on agricultural land. It was paid by both Muslims and non-Muslims.

The zakat was a tax on Muslims. It was a religious tax and was paid on certain types of property, such as gold, silver, and livestock.

The Diwan-i-Kharaj was organized as a combination of centralized and decentralized bureaucracy. The central office was located in the capital city, and it was responsible for overseeing the financial affairs of the state. The provincial offices were located in the provinces, and they were responsible for collecting taxes and managing the financial affairs of the province.

The main functions of the Diwan-i-Kharaj were collecting taxes, managing the financial affairs of the state, and distributing funds to the various departments of the government.

The Diwan-i-Kharaj played a major role in the economic development of the Delhi Sultanate. It collected taxes and managed the financial affairs of the state, which allowed the government to invest in infrastructure, education, and other projects that promoted economic growth.

The Diwan-i-Kharaj contributed to the stability of the Delhi Sultanate in a number of ways. It helped to maintain a strong and stable financial system, which allowed the government to invest in infrastructure, education, and other projects that promoted economic growth. It also helped to maintain a strong and stable military, which allowed the government to defend the sultanate from its enemies.

The Diwan-i-Kharaj faced a number of challenges, including collecting taxes from a large and diverse population, managing the financial affairs of a large and complex state, and dealing with corruption and inefficiency.

The Diwan-i-Kharaj overcame these challenges by implementing a number of reforms, relying on the support of the military, and relying on the support of the religious establishment.

The Diwan-i-Kharaj left a lasting impact on the financial system, economic development, and political stability of the Delhi Sultanate.

The Diwan-i-Kharaj contributed to the decline of the Delhi Sultanate by failing to collect enough taxes to support the government, being unable to control corruption and inefficiency, and being unable to adapt to the changing economic conditions.