Quality quarantine stock in SMEs: segregating blocked goods, valuation, and impact on COGS and margins

In many manufacturing, distribution, or import SMEs, a significant share of stock is not immediately saleable: batches awaiting laboratory analysis, supplier sampling, documentary checks (certificates, food or medical traceability), reconciliation with purchase orders, or decisions on returns to the supplier. Until quality release is formalized, those goods remain economically acquired but operationally blocked.

Treating them as available stock already distorts sales commitments and purchase planning at the operational level. At the accounting and reporting level, mixing quarantine and free stock skews inventory value, cost of goods sold (COGS), and margins by product or customer. In Switzerland, the duty to keep orderly accounts (Art. 957 et seq. CO) and prudent valuation principles require timely recognition of write-downs and prohibit inflating results by deferring costs without justification.

This guide describes how to segregate quality quarantine stock physically and in the accounts, how to value it in line with Swiss practice (Swiss GAAP FER / ordinary accounting), and how to prevent inspection delays or non-conformities from masking true profitability.

Inventory of goods and finished products is generally valued at the lower of acquisition or production cost and net realizable value (selling price less costs to complete and sell), as required by Art. 960 CO under ordinary accounting. The prudence principle (Art. 958a CO) requires timely write-downs when economic use is doubtful — typical when inspection fails, a lot is contaminated, or the customer rejects a waiver.

On entry into quarantine, the book value usually remains that of goods receipt (supplier invoice cost plus ancillary charges attributable to stock, e.g. transport to warehouse, customs duties if capitalized per policy). Internal quality control costs are usually expensed in the period as overhead (6xxx accounts), not included in stock cost, unless they are lot-specific processing (e.g. paid external retest) to capitalize if they increase recoverable value.

Flow method (FIFO or weighted average cost): quarantine does not change the method, but release movements must inherit the same cost layer as the original receipt. Avoid fictitious “receipts” that rebuild cost at release: you would shift COGS to the wrong period.

Accrual COGS is recorded when the sale occurs (economic outflow of goods), not when the lot leaves quarantine. However, the operational timing of quality release determines which units enter the month’s shipments and therefore which cost layer ends up in COGS — especially with FIFO and high-value lots.

Common error: shipping goods still in “hold” status in the system but physically picked, posting the invoice and COGS against stock that is technically unavailable. The result is understated book inventory, inflated margins in the current month, and painful year-end adjustments. Implement controls: no delivery note without “released” status in the ERP.

A second effect concerns finished goods: if components in quarantine block production start, WIP may absorb labor and overhead while component inventory stays high. Separate “value tied up in quarantine” from WIP in reporting to read operational efficiency correctly.

Input tax on purchases of goods generally remains deductible if the purchase invoice is valid and the goods serve the taxable activity, even when temporarily in quarantine. The situation changes if goods are destroyed without resale or returned with cancellation of the transaction: confirm with your tax adviser the VAT correction treatment and documentation for scrap (waste register, destruction certificates where required).

For sales made after a quality waiver, the customer invoice remains ordinary; any “second grade” discounts affect the taxable amount, not the timing of input VAT deduction on the original purchase.

At month-end or fiscal year-end, reconcile the 1109 balance with the physical count in quarantine locations. Any variance not explained by ERP movements should be investigated before adjusting: it often indicates unrecorded picks or duplicate quality releases.

For year-end close (Art. 958 et seq. CO), document write-down assumptions for quarantine lots beyond aging thresholds or with open NCs. Auditors will expect traceability between quality tickets, warehouse reports, and journal entries.

With Accountex you can map quarantine accounts, import aging from warehouse exports, and link write-down adjustments to period COGS entries, keeping an audit-ready history for trustees and banks.