Agriculture is not limited to the cultivation of crops alone; it encompasses a wide range of allied and supportive activities that generate additional or supplementary earnings for farm households. These additional earnings are known as ancillary income. In the context of farm cost management, ancillary income plays a crucial role in improving farm profitability, stabilizing cash flow, and reducing financial risks associated with seasonal and uncertain agricultural production. It includes income derived from allied agricultural enterprises and supportive on-farm and off-farm activities that complement the main farming operations. One of the major sources of ancillary income in agriculture is livestock rearing. Dairy farming, poultry, goat rearing, sheep farming, and piggery provide regular and recurring income to farmers. For example, dairy farming generates daily cash flow through the sale of milk, which helps farmers manage day-to-day expenses and meet operational costs such as labor wages and input purchases. Poultry farming, both broiler and layer units, provides income through meat and egg production. Livestock also contributes indirectly by providing manure, which reduces expenditure on chemical fertilizers, thereby lowering the cost of cultivation. Fisheries and aquaculture are also important sources of ancillary income, particularly in areas with ponds, rivers, or coastal regions. Fish farming utilizes available water resources and generates significant returns within a short production cycle. Integrated farming systems that combine crop production with fish farming optimize resource use and enhance overall farm income. Horticulture, floriculture, and vegetable cultivation serve as additional income sources, especially when practiced as intercrops or on small plots of land. Fruits, flowers, spices, and vegetables often fetch higher market prices compared to staple crops. Mushroom cultivation and nursery raising are other profitable ancillary activities requiring limited land and investment. These activities are particularly suitable for small and marginal farmers and can be managed alongside traditional crop farming. Agro-processing and value addition constitute another significant source of ancillary income. Farmers can process raw agricultural produce into higher-value products such as