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Special Order Incremental Profit Calculator

Compare a special order with declining it, including additional setup expense and contribution displaced from existing work.

By PriceAndProfit Editorial Updated

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Fill in the fields: the result appears under the form, with the formula below it.

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Formula and cost boundary

Incremental profit = order units × (offer price − incremental unit cost) − setup cost − displaced contribution

Units must be a positive whole number. Include only costs and lost contribution caused by the order. Existing unavoidable overhead is excluded from this incremental comparison, but the business still has to cover it overall. Displaced contribution is an opportunity cost, not a second supplier payment. The minimum offer covers the specified incremental costs; it is not a recommended quote. It rounds upward to cents after removing floating-point noise. A zero offer leaves a dollar loss visible while its revenue margin is undefined.

Worked example: Positive contribution after displacement

The following inputs are hypothetical values for checking the calculation. They are not recommended prices, wages, margins or platform charges. Keep the units and period shown in each label when replacing them with your own records.

Inputs for this worked example
InputExample value
Units in additional order 200 units
Offer price per unit $18/unit
Incremental cost per unit $11/unit
Additional setup cost $500
Contribution displaced from other work $300
Outputs from the displayed inputs
ResultCalculated value
Incremental profit $600
Minimum offer rounded up to cents $15/unit
Incremental profit / order revenue 16.67%

Using the result

Save the input set alongside the source date of each quote or cost record. Review the cost boundary before comparing this result with another report: a contribution measure may exclude overhead, and a cash measure follows payment dates. Display rounding does not change the underlying assumptions. Recalculate when an input changes; the tool does not predict future sales or collections.

Are any rates supplied automatically?

No. Numeric fields are your inputs. Example values demonstrate arithmetic only. Check your contracts and records for the amounts that apply to your business.

Why might a result be unavailable or negative?

A missing denominator or inconsistent inputs can make the calculation undefined. Those combinations are rejected or labeled explicitly. A valid negative result remains visible because it may identify a loss or cash shortfall.

Method reference: OpenStax: Special Order Decisions. Checked October 22, 2026. Incremental cost and capacity concepts only; no legal pricing rules or market prices are asserted.

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