How to Calculate Cost per Tonne of Sugarcane Produced in 1 ha

If you grow sugarcane, you already track yield — tonnes per hectare, sucrose content, harvest dates. But the number that actually tells you whether your operation is profitable is a different one: cost per tonne produced. Two fields can report the same yield and have completely different profitability, simply because one is spending far more to get there.

This guide walks through exactly how to calculate cost per tonne for a 1-hectare block of sugarcane, step by step, with a worked example.

Why cost per tonne matters more than total profit

A common mistake in sugarcane operations is looking only at total revenue or total profit for the season. A field can look profitable in aggregate while quietly losing money on every tonne produced — high volume simply hides a weak margin. Calculating cost per tonne forces the analysis down to the unit level, where the real decisions live: is this field worth replanting, is this input worth the price, is this the right time to invest in irrigation or mechanisation.

Step 1: Separate fixed and variable costs

Every cost on a sugarcane operation falls into one of two buckets.

Fixed costs — costs that don't change much regardless of how much cane you produce:

• Land lease or land-related costs
• Depreciation of machinery and equipment
• Permanent staff salaries
• Insurance and licences
• Irrigation infrastructure depreciation (if applicable)

Variable costs — costs that scale with the size of the crop and the work required:

• Fertiliser and soil amendments
• Agrochemicals (herbicides, pesticides)
• Fuel for land preparation, spraying and harvest operations
• Seasonal / harvest labour
• Machinery maintenance and repairs
• Transport of cane from field to mill
• Irrigation water and energy costs

Keep these separated for the full production cycle relevant to your crop — a ratoon cycle can span 12 months, plant cane longer. Mixing fixed and variable costs together is the most common reason cost-per-tonne numbers come out wrong.

Step 2: Total your costs for the 1 ha area

Total Cost (1 ha) = Total Fixed Costs + Total Variable Costs

Be careful with fixed costs shared across multiple hectares — a tractor used across the whole farm, for example. Allocate them proportionally per hectare, usually based on area or hours of use, so you're not overstating or understating what this specific hectare actually cost.

Step 3: Confirm your yield in tonnes per hectare

This is the tonnage of cane actually harvested from that 1 ha, weighed at delivery or at the mill scale — not an estimate. If you have partial or split harvests, sum all tonnes delivered from that hectare for the period.

Step 4: Apply the formula

Cost per Tonne = Total Cost (1 ha) ÷ Yield (tonnes/ha)

That's it — but the value of this number comes entirely from the quality of the inputs in Steps 1–3.

Worked example

Once you have this number, compare it against your sale price per tonne to see your actual margin — not just your total revenue. If the mill or buyer pays, say, 1,600 MZN/tonne, this hectare is generating roughly 233 MZN of margin per tonne. Run the same calculation across different fields and you'll often find that your best-yielding field isn't always your most profitable one, because its cost structure is heavier.

Common mistakes to avoid

1. Forgetting to allocate shared fixed costs. A tractor or irrigation pump used across several hectares needs to be split proportionally, not charged fully to one field.
2. Using budgeted costs instead of actual costs. Always reconcile against what was actually spent, and flag variances above 10% so you understand what drove them.
3. Ignoring the harvest-to-cash timing gap. Sugarcane has a long cycle between planting/input costs and harvest revenue; cost per tonne tells you unit profitability, but you still need a month-by-month cash flow view to manage liquidity through the season.
4. Comparing cost per tonne across seasons without adjusting for input price inflation. Fuel and imported fertiliser costs can shift significantly year to year.

Turn this into a repeatable process

Doing this calculation once for one hectare is useful. Doing it consistently across every field, every season, is what turns it into a management tool — letting you spot underperforming plots early, negotiate input costs with real data, and decide with confidence where to expand or cut back.

Summary

Cost per tonne = total cost for the hectare (fixed + variable) ÷ yield in tonnes. Getting it right depends on correctly allocating shared fixed costs, using actual rather than budgeted spend, and weighing it against your true sale price per tonne to see the real margin — not just the harvest volume.