How this calculator works
The refund amount is only one part of a product return. A useful cost estimate also includes inbound shipping, customer-support time, inspection, repackaging, payment costs and the value that can realistically be recovered from the item. This calculator turns those components into a net cost per return.
Formula used
Worked example
A $100 refund, $12 label, $8 handling cost and $3 non-refundable fee total $123. If the returned item can recover $42, the net return cost is $81.
How to get a more reliable estimate
Use completed-return data from a consistent period. Include all costs that change because the return occurred, and avoid treating the original retail price as recovered value. Review carrier invoices, warehouse labor, payment reports and actual resale outcomes. If the item condition is uncertain, calculate a conservative and an optimistic scenario.
The output is designed for internal planning. It does not override consumer law, tax treatment, warranty obligations, payment-provider rules or marketplace policies.