The dahsala system (, , ; ; literally "ten years") was a Mughal land-revenue assessment used across the central provinces of the empire from 1580. Devised by Akbar's chief revenue minister Raja Todar Mal, the system fixed the state's annual cash demand on cultivated land by averaging the recorded yields and prices of staple crops over a preceding ten-year period. The Persian word dahsala refers to that decade-long base on which the resulting assessment schedules, called , were calculated.
The assessment formed the analytical core of the broader zabt revenue framework. Land was first measured with a standardised bigha based on the introduced under Akbar in 1573, then classified into four categories by the continuity of cultivation, after which a fixed cash rate per bigha for each crop was applied from a regional dastur schedule. Cultivators paid in rupees or rather than in kind, although the schedules were derived from a notional one-third share of the average produce.
Implementation followed years of preparation. The experiment of 1574 to 1582, supervised first by Khwaja Muzaffar Khan and then by Khwaja Shah Mansur, from 1578 to 1581, gathered the village-level survey data on which Todar Mal built the dahsala settlement after his return to the in 1582. The settlement applied to the imperial zabt zone of Lahore, Multan, Delhi, Agra, Awadh, Allahabad, and Malwa, was extended to Gujarat, and continued in adapted form under Jahangir, Shah Jahan, and Aurangzeb.
The detailed statistical record of dahsala assessments survives in the third book of Abu'l Fazl Allami's Ain-i-Akbari, compiled around 1595, which preserves per-bigha cash rates for dozens of crops across the imperial revenue circles. Modern interpretation of the system was opened by William Harrison Moreland in 1929 and recast by Irfan Habib in 1963 and Shireen Moosvi in 1987, both associated with the Aligarh school of historians at the Aligarh Muslim University.
Etymology and terminology
The term dahsala is a Persian compound of ("ten") and ("year"), meaning "decennial" or "of ten years". It refers specifically to the ten-year base period from which the cash schedules were calculated rather than to any period for which an individual schedule remained in force. Once compiled, a dahsala schedule was treated as binding for the foreseeable future and was rarely revised on the same ten-year cycle.
Contemporary Mughal usage also referred to the system as ("the dahsala regulation") or, less precisely, ("the ten-year settlement"). Abu'l Fazl placed it within the wider category of , the annual crop-rate assessment by which cash demand was fixed in advance of harvest.
In modern Indian and Western scholarship, the term sometimes denotes the assessment methodology specifically, and sometimes the entire revenue arrangement built on it, including land measurement, classification, collection, and the bureaucratic apparatus that operated it. The narrower usage, restricted to the ten-year cash-rate calculation that produced the dasturs, is the one followed by Habib and Moosvi and is adopted in this article. The broader administrative system within which the dahsala assessment operated is treated separately at zabt.
Background
Pre-Mughal precedents
A roughly comparable cash assessment had operated under the Suri administration of Sher Shah (r. 1540–1545) in the territory between the Indus and the upper Ganga. Sher Shah's officers measured the cultivable area using the , a yard inherited from Sikandar Lodi, and classified each field into one of three quality grades. A notional one-third share of the average expected produce was then converted into a per-bigha cash rate calculated from prevailing market prices. Although his death in 1545 cut short the full extension of the system, its methodology survived in administrative memory and provided the working framework that Todar Mal, who began his career under the Surs in Bihar, later adapted for Akbar.
The early Mughals used less stable arrangements. Humayun's short and contested reign produced no settled cash assessment. Between Akbar's accession in 1556 and the consolidation of imperial control in the mid-1560s, the regent Bairam Khan and the early ministers relied on local agreements with intermediaries called , under which a lump sum was negotiated for each and the actual rate per cultivator was left to local custom. The result was wide regional variation, frequent under-collection, and continuous bargaining over the demand.
Akbar's early reforms (1567–1573)
The first systematic Akbari reform was a thorough data-gathering effort. In 1567 the imperial diwan, Khwaja Muzaffar Khan, instructed the local revenue clerks () to submit detailed returns on cultivated and uncultivated area in each pargana, the produce of each crop, and the prevailing market prices. These returns formed the statistical base on which subsequent assessments were built.
In 1573 Akbar standardised the linear unit of measurement. The , a yard of approximately 33 inches (84 cm), replaced the regionally varying cubits then in use, and the new was defined as a square of sixty Ilahi gaz, equal to 3,600 square Ilahi gaz, or about 0.55 acres (0.22 ha). A measuring rod called the , built from bamboo segments joined by iron rings, replaced the loose hempen rope used previously and held its length under varying weather, an innovation that improved the accuracy of village surveys.
The karori experiment (1574–1582)
In late 1574 Akbar reorganised revenue collection in the imperial khalisa lands between Lahore and Allahabad. The empire's most productive territory was divided into blocks each expected to yield one crore (ten million) of dams, and an officer called a was placed in charge of each block. The karori was responsible for measuring the land, recording the cropping pattern, supervising the harvest, and remitting the crore of dams demanded by the central treasury.
The experiment had two purposes. The first was to extract revenue more efficiently from territory previously held by jagirdars; the second was to compile, year by year, the village-level data on yields and prices needed for a longer-term assessment. Data flowed in steadily through the late 1570s, but the system proved administratively brittle. Many karoris extorted cultivators in order to meet the crore demand, while others embezzled. After Khwaja Shah Mansur replaced Muzaffar Khan as diwan in 1578, abuses became severe enough to threaten cultivated area in core districts. Shah Mansur was executed for treason in 1581, the karori arrangement was wound up in 1582, and Todar Mal returned to the diwani, where he applied the survey data the experiment had produced.
Implementation
Todar Mal's settlement
Raja Todar Mal, a Khatri accountant who had served Sher Shah before entering Mughal service in 1562, was given charge of imperial revenue administration in 1574, and again, after the karori failure, in 1582. The dahsala settlement, formally proclaimed in 1580 and extended steadily through the 1580s, applied his analysis of the karori-era survey data. For each pargana, the cultivated area of each crop, the yield in per bigha, and the prevailing market prices over the years from 1570–71 to 1579–80 were averaged. From the resulting average yield, the state demanded one-third in kind, valued at the ten-year average price, and converted into a cash rate per bigha that was then entered into the dastur-ul-amal for that revenue circle.
The arithmetic was performed crop by crop and pargana by pargana. Habib's reconstruction emphasises that prevailing prices and yields were not crudely averaged from existing administrative figures: the data were re-derived from raw qanungo returns and from contemporary market reports, and only then averaged across the ten harvests. Once compiled, the dasturs were treated as fixed schedules unless extraordinary conditions warranted revision, and they remained substantially in force, with periodic adjustments, until the early eighteenth century.
Khwaja Shah Mansur's role
Although the dahsala system is associated with Todar Mal, the underlying field surveys were directed in part by Khwaja Shah Mansur during his diwani between 1578 and 1581. Shah Mansur extended the karori coverage, tightened audit procedures, and standardised the formats in which qanungos submitted their returns, all of which sharpened the data that subsequently fed the dasturs. His execution in 1581 has been read by Habib as ending a faction within the imperial bureaucracy that favoured very high revenue demand. The dahsala settlement under Todar Mal applied a more moderate rate.
Methodology
Land measurement
Field measurement was the first stage of any dahsala assessment. In each village the (village accountant) and the karori or his successor official measured every cultivated plot using the jarib, recording the area in bighas of the Ilahi standard. Uncultivated land was also surveyed and classified, although it carried no immediate revenue demand. The survey produced a written register listing each cultivator's plots and acreage that became the basis for assessment.
The standardisation of the bigha was significant for comparability across regions. Pre-Akbari units varied widely: a bigha in Bengal might be twice the size of one in Punjab. The Ilahi bigha gave the central treasury a single basis on which to compare productivity and aggregate revenue. Empire-wide adoption of the unit, although uneven in practice, was a precondition for the empire-wide dastur schedules.
Land categories
Cultivated and cultivable land was sorted into four categories defined by the continuity of cropping, set out by Abu'l Fazl in the third book of the Ain-i-Akbari.
+ Land categories under the dahsala system Category Definition Revenue treatment Polaj Cultivated continuously every year Full assessment at the dastur rate Parauti Left fallow temporarily to recover fertility Full assessment in the years it was sown Chachar Left fallow for three to four years Reduced assessment, rising progressively to full Banjar Uncultivated for five years or more Concessional rates intended to encourage reclamation
Polaj and Parauti land, the most productive categories, were further graded into three quality classes by yield: (good), (middling), and (poor). The applied cash rate combined the dastur for the crop with the multiplier appropriate to the land's classification.
Crop schedules and the dastur-ul-amal
The cash rates that gave the system its operational substance were entered into the dastur-ul-amal, a schedule maintained separately for each or revenue circle. Each schedule listed the per-bigha cash demand for each crop grown locally; in core areas of the zabt zone the schedules covered roughly eighteen kharif and sixteen rabi crops, including wheat, barley, gram, oilseeds, cotton, indigo, sugar cane, and opium.
The compilation procedure was elaborate. For a given crop in a given dastur, the assessor took the average yield in maunds per bigha across the ten harvests, applied the state share of one-third, and multiplied by the ten-year average market price to obtain the cash demand per bigha. An earlier reading by Moreland in 1929 held that the ten-year averaging operated on a previously fixed cash schedule rather than on yields and prices directly. This interpretation was rejected by Habib in 1963 and has not survived in subsequent scholarship.
Once compiled, a dastur was treated as binding for the foreseeable future. Where conditions changed sharply, after a famine or a major shift in cropping pattern for example, the schedules were sometimes revised; but the surviving evidence in the Ain-i-Akbari from around 1595 shows the 1580 schedules largely intact fifteen years on.
State demand