Mulberry Silkworm Cocoon Farming Profit Calculator

How to use the calculator

Formula explained in plain language

Cocoon harvest = DFLs × fresh cocoon yield kg per DFL. Saleable kilograms = harvest × (1 − rejected fraction) × sold share. Accounting profit = saleable kilograms × net price − DFL rearing costs − sale dispatch − fixed expenses − interest − depreciation.

Start with disease-free layings and true rearing capacity

Disease-free layings (DFLs) measure the rearing units placed into the silkworm cycle. The calculator multiplies them by a user-entered gross fresh-cocoon yield per DFL. This is an expected harvest quantity, not a production commitment from a government agency. The field must be replaced with records from the same silkworm breed and season. Plantations and rearing houses have physical constraints; enter a feasible maximum DFL count supported by leaf production, handling capacity, labour and rearing floor space. The form rejects an entered DFL count above available capacity rather than implying output can be expanded indefinitely.

Keep damaged, graded and sold cocoons distinct

All cocoons harvested are not equally marketable. The model removes the entered percentage of stained, flimsy, irregular, infected or otherwise rejected material from gross mass and then applies the percentage of acceptable cocoons that can be sold in the scenario period. Marketable kilograms and actual sale kilograms therefore differ. A business must maintain grading sheets, weighbridge or market tickets and rejected stock records. Do not treat the unsold mass as current sales or assume it can later be sold at full price; delays can affect quality and cash collections. This is a sales-based operating scenario, not a complete stock-accounting framework.

Price realisation must match the product and transaction

The price input is the net amount per kilogram actually realised for the defined cocoon grade and sales channel. It is not a published official guarantee and should be verified using local market records, buyer slips or written supply contracts. Do not use retail silk fabric prices, spun silk prices or yarn export prices as fresh-cocoon prices; these products are at different points in the value chain and carry different conversion losses and processing costs. When separate grades receive substantially different prices, calculate multiple scenarios or use a defensible weighted realised price supported by the expected grade mix.

Full crop costs: mulberry leaf and rearing activity

Mulberry leaf production or purchase creates costs even when cocoon recovery turns out below plan. Crop hygiene, disease checks, disinfection, labour, mountages, consumables and handling should also be budgeted per DFL. In this planning tool, the three per-DFL categories are charged on all placed DFLs. Market transport is charged only on kilograms actually sold. Reconcile these simplified unit costs with the enterprise’s actual leaf-garden inputs, farm wages, paid services, equipment usage, electricity and wastage. The fixed category represents costs attributable to the selected rearing crop, with interest and depreciation shown separately.

Break-even DFLs and selling price are different questions

A higher number of DFLs is not always the answer to a loss. First calculate incremental contribution from each DFL: net saleable cocoon kilograms multiplied by cocoon price less dispatch cost, then subtract leaf, labour and hygiene cost per DFL. If incremental contribution is zero or negative, adding more DFLs worsens or cannot recover a fixed burden. Otherwise the fixed crop burden divided by per-DFL contribution gives the minimum DFLs required, rounded to the next whole DFL. The calculator also solves for the minimum net cocoon price needed at the entered output and cost assumptions, then checks whether required DFLs fit capacity.

Worked crop example and price sensitivity

Consider 1,500 DFLs with an assumed gross yield of 0.78 kg per DFL. The estimated harvest is 1,170 kg before grading. An eight percent rejection allowance and a ninety-six percent sale rate reduce revenue-generating kilograms substantially. The model then applies a sample net price of ₹515 per sold kilogram. Lowering the realised price or the recovery yield while holding already-incurred rearing inputs unchanged can rapidly erode contribution. For a realistic downside case, run a lower-yield season, higher disease-related rejection, lower auction price and increased crop labour, rather than relying only on a single optimistic price.

Hygiene and disease control are operating requirements

Central Silk Board rearing guidance emphasises suitable rearing conditions, clean mulberry feed, avoidance of overcrowding, suitable mountages, removal and appropriate disposal of diseased larvae, and rearing-house hygiene. Disease and parasitoid damage can reduce saleable output and require a crop to be abandoned. Operational good practice should be based on current authorised guidance and locally trained extension personnel, not any financial estimate. Check weather variability, leaf availability, temperature and humidity conditions, crop seasonality, pesticide exposure risks and labour training before expanding. Sample percentages in the calculator must never be interpreted as mandated disease or rejection rates.

Accounting, tax, financing and traceability boundaries

The profit result is crop-period accounting profit before tax under the entered costs. It excludes capital investment, initial plantation establishment, changes in animal or biological assets, financing principal, cash working capital and applicable income or indirect taxes. The model does not certify cocoon grade or market acceptance and does not assume government incentives. A positive accounting result can still coincide with cash strain if inputs are paid early and market settlement occurs late. Maintain cycle-wise DFL, leaf input, biological loss, cocoon grading, buyer receipts and payment records, and obtain professional advice for formal books and public funding applications.

Scenario-testing method and record evidence

Build an evidenced base case and two additional scenarios. In a low-sales scenario, reduce realised price or sell-through instead of raising production volume to compensate; in a cost-shock case, increase input, labour and power rates. Pay attention to the gap between contribution and accounting profit before tax. If the break-even target exceeds practical capacity, a higher volume cannot be achieved at the same site without further capital and time.

Receivables, inventories, input-tax credit, GST settlements, loan principal, deposits, cash conversion cycle and income taxes need separate schedules. A scenario with positive accounting profit can still face cash-flow pressure. Use monthly booking and collection records, rather than headline sector averages, to convert these output estimates into a financing plan.

Institutional and official references

The references support process and compliance context. None are claimed as a source for the illustrative selling prices, yields or expenses entered on this page.

• Central Silk Board — sericulture overview
• Central Silk Board — diseases and pests of mulberry silkworm