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Calculator · E-commerce

Order Contribution Calculator

Reconcile order revenue with product, fulfillment, payment, acquisition and return costs to see contribution before fixed business overhead.

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

Contribution = net revenue − product − fulfillment − fees − acquisition − additional return loss

Use revenue after discounts and avoid including sales-tax collections held for others. If revenue is already reduced for refunds, do not deduct the same lost revenue in the return reserve. The reserve should contain only additional unrecovered costs under that convention. Acquisition must be assigned consistently across first and repeat orders. Positive contribution does not establish company net profit.

Worked example: Profitable order before fixed overhead

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
Net order revenue including shipping $80
Product cost $30
Fulfillment and delivery cost $10
Total order payment and platform fees $5
Acquisition cost assigned to this order $12
Additional expected return loss per order $3
Outputs from the displayed inputs
ResultCalculated value
Order contribution after entered costs $20
Contribution share of order revenue 25%
Contribution before acquisition cost $32

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: Break-Even Points in Units and Dollars. Checked October 22, 2026. Contribution and cost-volume-profit relationships; examples are independently constructed.

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