Returns Cost: Separate Processing, Recovery, and Lost Inventory Value
Work through a 100-return scenario, compare disposition routes, and distinguish cost per return from the burden spread across all outbound units.
Define the period and economic boundary
Returns can consume transport, inspection, administration, rework, storage, and inventory value. Start with one consistent period and product cost basis. A returned item's original cost is different from its retail price, and an inventory recovery assumption is different from a cash refund. This planning model separates incremental processing from the portion of original inventory cost that is not recovered. It deliberately excludes refunds and reversed revenue so those amounts are not accidentally added on top of the same economic loss.
Worked example: 1,000 shipments and 100 expected returns
At a 10% assumed return rate, 1,000 shipped units produce 100 expected returned units. Each has an original inventory cost of $40, so the returned inventory cost basis is $4,000. Shared per-return costs are $4 inbound transport, $1.50 inspection, and $1 administration: $6.50 per return, or $650. The period also has $250 fixed return costs. The example assumes no unrecoverable original outbound cost. These are entered assumptions, not industry averages or a prediction of actual customer behavior.
Calculate recovery by disposition route
Sixty returns go to restock at 100% of original cost, recovering $2,400 of inventory value. Twenty-five go to refurbishment at 70%, recovering $700. Ten go to salvage at 15%, recovering $60. Five go to disposal with zero recovery. Total assumed recovery is $3,160, leaving $840 of the original $4,000 unrecovered. Recovery does not mean these products have already been sold or cash has been received. Confirm condition, saleability, and valuation with the relevant operational and accounting processes.
Add route-specific work once
Restocking costs $2 for each of 60 units, or $120. Refurbishment costs $8 for each of 25, or $200. Salvage handling adds $10 and disposal handling adds $10. Route work is therefore $340. Add $650 shared processing and $250 fixed costs to reach $1,240 processing and fixed cost. Adding the $840 unrecovered inventory value gives a $2,080 period burden. Do not also add the entire $4,000 inventory cost; that would count the recovered portion as a loss.
Choose the denominator for the decision
Dividing $2,080 by 100 returns gives $20.80 per returned unit. Dividing by all 1,000 shipped units gives $2.08 per shipped unit. The first denominator helps assess a return-handling route; the second spreads the assumed burden across outbound volume. Neither is automatically a selling-price increase, accounting provision, or supplier chargeback. With zero expected returns, per-return cost is undefined even if fixed costs remain. Keep undefined ratios visible rather than converting them into a misleading zero.
Use a sensitivity comparison before choosing a route
Changing a disposition share can affect recovery and handling in opposite directions. More refurbishment may recover value but require extra labor; higher restock recovery is only credible for stock that can actually return to saleable inventory. Keep disposition shares at 100% and compare the full period burden using documented assumptions. Return reason and disposition are separate concepts: why the customer returned an item does not alone establish what should happen to it. Inspect the item and follow the authorized return process before acting.