Administrative Under Structure Delhi Sultanate:
After Sultan, the most important office was the Diwan-i-Wizarat, headed by the wazir.
His role was of a general supervisor over all departments, though he was one of the four important departmental heads.
He was the chief advisor to the Sultan.
The main functions of the wazir were–
 to look after the financial organization of the State,
 to give advice to the Sultan,
 to lead military expeditions at Sultan’s behest.
 The wizarat or the office of wazir also kept a check on land revenue collections.
 Further, the Mints, the intelligence departments, the royal buildings and other bodies affiliated to the royal court were supervised by the wizarat.
Departments which worked under the wizarat:
 Mustaufi-i-Mumalik (Auditor-General)
 Mushrif-i-Mumalik (Accountant General)
 Majmuadar (Keeper of loans and balances from the treasury)
 Diwan-i -Waqoof (to supervise expenditure)
 Diwan-i- Mustakharaj (to look into the arrears of revenue payments)
 Diwan-i-Amir Kohi (to bring uncultivated land into cultivation through state support).