Check what an ecommerce discount did to order margin

Start a promotion review with net merchandise revenue after discounts, using the store's actual order records. Keep canceled and test orders out of the completed-sale population, and identify refunds separately. A report based on list prices can make a successful-looking campaign appear to generate margin it never earned.

Read the platform's definitions for gross sales, discounts, returns, shipping, and taxes. Some reports recognize adjustments on a different date from the original order. Use a consistent cohort when comparing the promotion with ordinary trading.

Consider an illustrative product listed at $100 with a $45 product cost. A 20% discount reduces merchandise revenue to $80. If fulfillment and payment costs total $12, the order contributes $23 before advertising and other costs, compared with $43 at the full price under the same assumptions.

The discount is 20% of the selling price but reduces this contribution by about 46.5%. This example does not say the promotion is a bad decision. It shows how much additional volume, repeat purchasing, or inventory benefit would need to support it.

Review free shipping, extra pick-and-pack work, gifts, affiliate commissions, and payment-method mix. Check whether larger baskets improve shipping cost per item or require more expensive packaging. Include the expected effect of returns using evidence from the relevant product and customer group.

Separate directly attributable costs from allocated overhead and label the resulting metric. An order contribution figure is not company profit. The same applies to advertising: campaign-reported revenue may use an attribution window that differs from the order cohort used in the finance review.

A promotion may pull forward purchases that would otherwise happen later. Compare new and returning customers, product mix, and subsequent activity where the data supports it. Avoid declaring a repeat-purchase benefit before enough time has passed to observe one.

If the campaign was intended to clear aging stock, record the inventory reduction and cash recovered alongside the margin result. Compare that outcome with a realistic alternative, such as holding the stock longer or using a smaller discount.

Set a minimum acceptable contribution or cash objective for the next promotion and identify which costs must stay within the plan. Use actual product costs and fulfillment data rather than one store-wide average when the featured products differ materially.

Save the cohort definition, discount rules, and cost assumptions with the review. Revisit the result after the return window has developed so the final assessment reflects what customers kept, not only what they ordered during the campaign.