Dear Student,
The mahalwari system was introduced by Holt Mackenzie in 1822. The other two systems were the Permanent Settlement in Bengal in 1793 and the ryotwari system in 1820. It covered the states of Punjab, awadh and Agra, parts of Orissa, and Madhya Pradesh.Under the Permanent Settlement the revenue was fixed or decided as per the land holdings of the peasants; In Mahalwari system revenue was to be paid by village known as mahal.In Permanent Settlement the Zamindars collected the revenue. But in Mahalwari systern the village headman had to collect the revenue.
Regards