Why returns are a balance-sheet item, not just a warehouse operation
Reverse logistics covers everything that brings goods back from the customer (or point of sale) to the company: returns for defect or change of mind, warranty pickups, size exchanges, rejected B2B shipments and e-commerce flows. For an SME selling online or through a distribution network in Switzerland, the share of returns affects margins, liquidity and warehouse capacity — often more than outbound shipping cost.
From an accounting perspective, every return touches at least three areas: revenue (adjustments and credit notes), cost of goods sold (COGS) and inventory (valuation and any write-downs). Without a dedicated budget and clear allocation rules, year-end figures become distorted and cash flow sees unpredictable spikes in post-holiday or post-sale months.
This guide explains how to structure budgets and processes for reverse logistics in a Swiss SME, with reference to standard accounting practice (CO/FER) and VAT aspects relevant to domestic and cross-border returns from customers in Switzerland.
Cost components of reverse logistics
Before setting a budget, it helps to break down the actual and semi-fixed costs tied to returns:
| Item | Operational examples | Typical accounting treatment |
|---|---|---|
| Return shipping | Prepaid labels, couriers, home pickups | Distribution / logistics cost (account 6xxx) or charge to customer if contractually agreed |
| Receiving labour | Quality control, reconciliation with order | Personnel cost or warehouse overhead allocated per unit processed |
| Return to stock | Relabelling, repackaging, shelf placement | Same logistics cost centre; affects unit storage cost |
| Disposal / downgrade | Non-resalable items, scrapping, donation | Inventory write-down or loss on scrap; waste disposal costs |
| Loss of value | Forced clearance, outlet, scrapping downgraded stock | Margin reduction or inventory write-down at the lower of cost and net realisable value (CO art. 960a) |
| Administration | Credit notes, refunds, payment reconciliation (TWINT, cards) | Administrative overhead; accounting time for VAT adjustments and collections |
Returns budget: a practical method for SMEs
A credible budget combines historical data and volume drivers:
Percentage-of-revenue approach
Estimate the return rate as a percentage of net revenue or units shipped for the channel (e.g. e-commerce: indicative values often between 8% and 25% depending on sector, fashion, electronics, perishable food). From the sales plan derive the expected number of returns and multiply by the «cost per return» (CHF/unit) from the prior year.
Indicative formula: Reverse logistics budget ≈ (Expected number of returns × average cost per return) + fixed returns-warehouse costs.
Per-unit and seasonality approach
Useful when returns follow peaks (Christmas, Black Friday, sales). Model months with expected volumes and apply a full cost per return transaction (pick-up + QC + re-stock or scrap).
Include customer refunds in the treasury budget: cash often leaves before goods are received back and revalued, especially with immediate online payments.
For internal review or audit, documenting assumptions (return %, non-resalable item rate) helps align the operating budget with any year-end inventory write-down provisions.
Impact on COGS and margins
Cost of goods sold reflects the cost of goods sold in the period. An approved return economically reverses the sale: revenue decreases (credit note or reversal) and COGS must be adjusted if the goods re-enter valuing inventory.
If the item returns to a resalable state at the same purchase or production cost already charged to the original sale, typical posting is re-entry to warehouse at historical cost and reduction of COGS in the return period (or offset against the revenue account depending on software and chart of accounts). If goods are damaged, the difference remains on COGS or a dedicated «return losses» account, keeping traceability by product category.
Purely logistical return costs (courier, warehouse hours) usually do not increase inventory value: they go to the income statement as distribution costs. Confusing purchase cost and return cost artificially inflates inventory and understates the real margin of the e-commerce channel.
Useful KPIs for management
- Return rate by channel and category (% of units shipped)
- Average cost per return (CHF) = reverse logistics costs ÷ number of returns
- «Non-resalable» share (% of units disposed or written down of total returns)
- Net channel margin after returns and disposal (revenue − COGS − reverse logistics)
Warehouse, inventory and valuation
Reverse logistics uses space, time and accounting attention:
Physically or logically separating (WMS locations) a «returns quarantine» zone prevents unchecked products from re-entering picking. Until quality control is complete, goods should not be accounted as available for sale.
At year-end, the physical count must include returns already received but not yet reclassified. Swiss accounting rules (CO art. 960a and FER) require valuation at the lower of acquisition cost and net realisable value; downgraded, out-of-fashion or open-pack stock may require line-by-line or category write-downs, documented in the notes to the financial statements.
For SMEs with multiple sites (e.g. central warehouse and courier hub), aligning stock movements between ERP and carrier reduces discrepancies between management accounting and inventory balances — common precisely during e-commerce return peaks.
Disposal, compliance and traceability
Waste and operational obligations
Non-recoverable goods become business or special waste (packaging, electrical and electronic equipment, chemicals). Disposal costs are booked as operating costs; retain invoices and movement documents for possible cantonal checks on commercial activity and disposal.
Accounting documentation
For each disposed batch: internal record or outbound note, link to warehouse movement (zero write-off or residual cost) and, where applicable, proof of destruction for branded goods or personal data (nFADP; where relevant also GDPR, for returns with customer labels).
Donations for social purposes of still usable goods may, if made to recognised tax-exempt entities and properly documented, be treated differently from disposal for income tax purposes; assess case by case with the tax adviser rather than treating the donation as a neutral transaction without documentation.
VAT, e-commerce and credit notes
For sales subject to Swiss VAT, a full or partial return requires issuing a credit note with the rate applied at the time of the original supply; the reduction in consideration must be declared in the tax period in which the credit note is issued (FTA practice on returns). The credit note must also meet the formal identification requirements under art. 26 VAT Act.
In online shops, refunds via payment gateways must be reconciled with credit notes and any goods received back; gaps between «refund issued» and «goods received» create cash differences and double VAT correction risks.
Cross-border B2C sales into Switzerland (import by the customer) follow different rules from domestic returns: if returning abroad or to a CH warehouse, verify customs status and import VAT so as not to lose credits or duplicate tax. SMEs with significant volumes benefit from a returns checklist agreed with the forwarder and customs adviser.
Processes, return policies and accounting trail
Aligning operations, customer care and accounting reduces period-end errors:
- Published return policy (terms, product condition, customer-borne costs) consistent with what is recorded in the ERP.
- RMA or return number linked to order, invoice and warehouse movement — basis for audit trail in ordinary audit.
- Approval workflow for refunds above threshold (linkable to internal delegation matrices) before cash outflow.
- Monthly close: compare open returns (refund without goods) vs goods in quarantine vs credit notes issued.
- Analytical report by channel and campaign, to identify products with abnormal return rates and act on product sheet or supplier.
Integration in accounting software such as Accountex
Centralising sales invoices, credit notes, warehouse movements and «logistics / e-commerce» cost centres makes it possible to extract real reverse logistics cost for the period in a few clicks. Linking each credit note to the item and original sales document simplifies COGS adjustment and VAT reporting.
At year-end, inventory balances — including the quarantined returns portion — feed the balance sheet and income statement; a chart of accounts with dedicated sub-accounts (return losses, return courier costs) avoids masking the issue in generic «miscellaneous expenses» and supports decisions on return policy and pricing.
Concise checklist for management and accounting
| Area | Action |
|---|---|
| Budget | Update return % and CHF/return quarterly; align treasury for refunds |
| COGS | Separate stock re-entry from logistics costs and non-recoverable scrap |
| Inventory | Returns quarantine; documented write-downs at year-end |
| VAT | Timely credit notes consistent with VAT register |
| Disposal | Traceability of warehouse outflows and disposal invoices |
| Reporting | Post-return margin KPIs by channel in the monthly management report |
Treating reverse logistics with the same rigour as a profit centre — even if «negative» — helps Swiss SMEs protect margin, VAT compliance and balance sheet quality, without surprises at financial close.