Todar Mai was Akbar’s revenue minister. He carried out a careful survey of crop yields, prices, and areas cultivated for a 10-year period, 1570-1580. On the basis of this data, the tax was fixed on each crop in cash.
Each province was divided into revenue circles with its own schedule of revenue rates for individual crops. This revenue system came to be known as zabt. This system was prevalent in those areas where Mughal administrators could survey the land and keep careful accounts