Return rate impact calculator
See what returns are actually costing you — in lost gross profit, processing spend, and the gap between your listed margin and your real one.
Enter your monthly order volume, return rate, average order value, gross margin, and what it costs you to process each return. The calculator shows the total monthly drag and your effective margin once returns are accounted for.
Return rate impact calculator inputs and results
How this calculator works
Monthly returns are monthly orders multiplied by the return rate. Each returned order costs two things: the gross profit that was earned on the original sale disappears when the refund is issued, and the business incurs additional processing costs to handle the return itself. Gross profit lost per return is average order value multiplied by gross margin — that's the contribution that evaporates. Processing cost is added on top as a flat per-return figure.
Effective gross margin is net gross profit divided by gross revenue. Net gross profit subtracts the total return cost — both the lost margin and processing spend — from the gross profit generated by all orders including those that were subsequently returned. The gap between listed margin and effective margin is the real cost of your return rate, expressed in the same terms as any other margin metric.
About this tool
This tool models how returns erode gross margin for ecommerce businesses. Inputs: monthly orders, return rate %, average order value, gross margin %, and processing cost per return (return shipping, restocking labour, customer service). Outputs: monthly return volume, gross profit lost on returned goods, return processing costs, total monthly cost of returns, and effective gross margin after accounting for the full impact. Useful for understanding whether a return rate is a manageable cost of doing business or a meaningful drag on profitability.
Frequently asked questions
How is the cost of a return calculated?
Each return costs two things. First, the gross profit that was earned on the original sale disappears — you refund the revenue, but you already paid for the cost of goods, so the margin you thought you made on that order is gone. Second, there's an additional processing cost for handling the return itself: return shipping if you cover it, the labour to inspect and restock, and any customer service time. This tool adds both together to get the true per-return cost.
What counts as processing cost per return?
Return postage or prepaid label cost if you cover it, warehouse labour to receive and inspect the item, restocking or repackaging costs, and a pro-rated share of the customer service time spent handling the return. If you use a 3PL, check your return handling fee directly — it's usually per-item and explicitly charged. A rough industry average for a basic ecommerce return is $5–15, but it varies significantly with product type and fulfilment setup.
Does this assume returned items can't be resold?
Effectively, yes. The model treats the gross profit on a returned order as fully lost. In practice, clean returns of undamaged items can often be restocked and resold, which would reduce the actual gross profit lost. However, a significant share of returns — particularly in apparel, electronics, and beauty — arrive in unsaleable condition. Treating all returns as a full gross profit loss gives a conservative worst-case view; your real number sits somewhere between this and zero depending on your restocking rate.
What's a normal return rate for ecommerce?
It varies enormously by category. Fashion and apparel typically runs 20–40%. Footwear is similar. Electronics run 8–15%. Home goods and general merchandise are usually 5–10%. Beauty and consumables are often below 5%. Return rates also spike significantly when customers buy multiple sizes or variants intending to keep only one — a pattern more common in fashion than most other categories.