Unit & cycle details

Number of bags per cycle

Dry substrate per bag (kg)

e.g. wheat or paddy straw.

Substrate cost (₹ per kg)

Spawn rate (% of dry substrate)

Spawn price (₹ per kg)

Bag & consumables (₹ per bag)

Labour, power & other per cycle (₹) · optional

Fresh yield per bag (kg)

Contamination / failed bags (%)

Selling price (₹ per kg)

One-time setup cost (shed, racks) (₹) · optional

Results

Profit per cycle₹45,500

ROI per cycle128.2%

Mushroom yield540 kg

Revenue₹81,000

Cost per cycle₹35,500

· Substrate₹6,000 (1,000 kg)

· Spawn₹12,000 (100 kg)

· Bags & consumables₹2,500

Cost per kg₹65.74

Cycles to recover setup cost1.8

How it's calculated

Substrate = bags × kg/bag × ₹/kg
Spawn = substrate kg × spawn% × ₹/kg
Yield = bags × (1 − contamination%) × yield/bag
Profit = yield × price − cycle cost; ROI = profit ÷ cycle cost × 100
Payback = setup cost ÷ profit per cycle

Assumptions

Setup cost is kept separate from cycle ROI. Yield depends heavily on species, substrate, hygiene and climate. All prices shown are editable illustrations.

Worked example

500 bags × 2 kg straw at ₹6, 10% spawn at ₹120/kg, ₹5/bag, ₹15,000 other → cycle cost ₹35,500. 450 good bags × 1.2 kg = 540 kg × ₹150 = ₹81,000 → profit ₹45,500, ROI 128.2%, payback 1.8 cycles.

These figures are estimates based only on the values you enter. Actual costs, yields and market prices vary by location, season and practice. This is not financial advice or a guarantee of profit.