Further processing can raise the selling price while reducing the quantity available for sale and adding new fulfillment costs. Compare the net proceeds available from the existing output with the net proceeds after the additional work. Costs already incurred to reach the current saleable stage do not change this forward comparison, although they remain part of the total product or batch result.
Worked decision model
Incremental value = finished units × (finished price − downstream selling cost) − added processing and setup − net proceeds from selling now
Suppose a business has 1,000 units that can be sold now for $12 each, with $1 per unit of selling and delivery costs. Selling now produces $12,000 revenue and $11,000 net proceeds after those future costs. The units could instead be processed into a higher-finish version. The extra work costs $2,500 in total plus $300 of setup, and only 950 units are expected to pass the final specification.
The finished units could sell for $17 each and require $1.50 per sold unit of delivery and selling costs. Revenue would be $16,150. After $1,425 of downstream selling costs and $2,800 of processing and setup, net proceeds would be $11,925. The incremental advantage of further processing is $925 compared with the $11,000 immediate-sale option. This comparison assumes the stated quantities can be sold and that rejected output has no recovery value.
| Option | Saleable units | Revenue | Future costs after decision | Net proceeds |
|---|---|---|---|---|
| Sell now | 1,000 | $12,000 | $1,000 | $11,000 |
| Process; 950 good units | 950 | $16,150 | $4,225 | $11,925 |
| Process; 900 good units | 900 | $15,300 | $4,150 | $11,150 |
| Process; 890 good units | 890 | $15,130 | $4,135 | $10,995 |
A shortcut based on 1,000 units gaining $5 of selling price would overstate the benefit because it ignores the 50-unit yield loss and the higher downstream cost. At the assumed 950 saleable units, the break-even finished price is approximately $16.0263: the $11,000 forgone immediate proceeds plus $2,800 added processing cost, divided by 950, then adding $1.50 per-unit selling cost. A cent-based quote of at least $16.03 reaches that modeled threshold.
If final yield is only 900 saleable units, net proceeds at the $17 price become $11,150, leaving just $150 of incremental advantage. At 890 units, proceeds fall to $10,995 and further processing is $5 worse than selling now. The continuous yield threshold is approximately 890.3226 units, so at least 891 whole units must pass under these assumptions. The yield scenario is not a guarantee about the process; use measured results or a clearly identified planning estimate.
Include bottleneck capacity when processing displaces other work, and account for differences in collection dates separately from contribution. A delayed sale can tie up cash even when incremental proceeds are positive. If current output has several sale alternatives, compare the best feasible immediate alternative rather than an artificially weak baseline. Do not add allocated joint costs to one option again merely because the finished product has a higher reported unit cost; that would mix a reporting allocation with a future decision.
Apply and verify the decision
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Establish the current alternative
Use the actual saleable output and the net proceeds available from its best supported immediate sale option.
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Model final good output
Apply yield or shrinkage before calculating finished revenue and per-unit selling costs; include any recovery from rejects separately.
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Check the limiting assumptions
Test finished price, accepted quantity, processing capacity, and collection timing before treating the modeled incremental advantage as available cash.
Method reference: OpenStax: Selling or Processing Further. Accessed October 22, 2026. The reference supports the accounting concept; all scenario prices, rates, probabilities, and worked calculations are independently constructed hypothetical examples.
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