Why bonded warehouses matter for importing SMEs
SMEs buying goods from abroad face a double financial burden at import: customs duties and, where applicable, import VAT (tax on importation). Paying these amounts upfront on stock that is still unsold can squeeze liquidity and increase working-capital needs.
Placing goods in a bonded customs warehouse (Zollfreilager or offenes Zolllager) allows you to bring merchandise into Swiss territory while keeping it under customs supervision, with duties (and, depending on the regime, import VAT as well) deferred until the goods leave the warehouse and are released for free circulation on the domestic market.
This guide explains the main regimes permitted in Switzerland, the impact on liquidity and inventory, and how to record transactions correctly in your accounts—with criteria that also help if you use software such as Accountex to link purchases, inventory and tax deadlines.
Customs regimes: overview for importers
The Federal Customs Act (CA, RS 631.0), the Customs Ordinance (CO), and directives from the Federal Office for Customs and Border Security (FOCBS; BAZG in German), define warehouses under customs supervision. For an importing SME managing its own stock, the most relevant cases are usually the Zollfreilager (duty-free warehouse under customs), the offenes Zolllager (public bonded warehouse), and, in specific situations, customs transit or other inward or outward processing regimes.
| Regime | Who holds the goods | Duty deferral | Typical SME use |
|---|---|---|---|
| Zollfreilager (in practice also “type C”) | Importer as warehouse keeper (Lagerhalter) or depositor (Einlagerer) | Yes, until release for free circulation | Resale or production stock with variable turnover |
| Zollfreilager / offenes Zolllager with logistics operator | Warehouse keeper (Lagerhalter) on behalf of the depositor | Yes, for the authorised depositor | Outsourced logistics, multiple operators on the same site |
| Customs transit | Importer or freight forwarder | Short term (until transit time limits) | Transit, sorting, waiting for documents |
| Immediate release for free circulation | Importer | No—duties and import VAT | Direct delivery to customer or stock already “cleared” |
Authorisation to operate a Zollfreilager or an offenes Zolllager requires an application to the FOCBS at the competent regional directorate, guarantees or security deposits, suitable premises, and a system of accounts for goods under customs supervision. A Zollfreilager must in principle be accessible to third parties on the same terms. Without valid authorisation there is no legitimate deferral: goods must be treated as already released for free circulation.
Liquidity: what is deferred and what is not
The main economic benefit of a bonded warehouse is postponing payment of import duties. Deferral arises at release for free circulation (clearance for domestic consumption), not when you place the order with the foreign supplier.
Effect on working capital
If you sell 30% of imported stock in the first quarter, with a bonded warehouse you pay duties only on the portion actually cleared, not on the entire container that arrived. The remainder stays under the suspense regime, reducing upfront cash outflows.
For seasonal catalogues, spare parts with irregular demand, or large-lot imports, deferral can free thousands of francs in liquidity—to reinvest in purchasing, marketing or staff, instead of tying it up in duties on slow-moving inventory.
Import VAT and security
Under a customs warehouse regime, import VAT is also generally deferred until clearance, where the regime conditions provide for it (see FOCBS practice and the VAT Act on tax on importation). Always confirm the treatment that applies to your tariff code and type of authorisation.
The FOCBS may require guarantees (bank deposit, surety) proportionate to default risk. These guarantees are not a tax cost, but they should be planned in your financing needs and monitored when inventory values grow.
Stock under customs supervision
From a logistics perspective, goods in a bonded warehouse are physically in Switzerland but not yet “domestic” for customs purposes. The importer must keep separate goods accounts (bonded stock vs stock in free circulation), aligned with registers required by the FOCBS and movements declared in the e-dec system and, for transit, in NCTS where applicable.
Every exit from the warehouse—domestic sale, samples, internal use, re-export—must be classified: release for free circulation (with settlement of duties and import VAT), definitive export, destruction under supervision, or another applicable regime. Misclassification leads to corrections, interest and possible penalties.
- •Periodic physical inventory: reconcile system balances, warehouse counts and customs status; discrepancies must be explained before audits.
- •Batch / SKU traceability: link each unit sold to the clearance declaration, for internal audit and review.
- •Storage time limits: in Zollfreilager and offenes Zolllager, duration is not usually limited; other regimes (transit, bulk-goods warehouses) impose deadlines—“forgotten” stock can force clearance with a cash impact.
Accounting in Switzerland
Swiss accounting rules (Code of Obligations and GAAP/FER practice) require inventory to reflect acquisition cost and be valued on a consistent basis. The special feature of bonded warehousing is mainly when duties and taxes are recognised and how liabilities and inventory appear on the balance sheet.
| Event | Typical entry | Note for SMEs |
|---|---|---|
| Goods arrive in bonded warehouse | Debit inventory (bonded) / credit foreign supplier (+ freight, insurance if any) | Duties not yet due: usually not included in cost until clearance |
| Clearance for domestic sale | Transfer to free-circulation inventory; recognise duties and import VAT; update goods cost | Align accounting date and customs declaration date |
| Payment of duties / import VAT | Debit FOCBS payables or transit account / credit bank | Import VAT deductible if VAT-registered |
| Direct re-export from bond | Exit bonded inventory without release for domestic free circulation | No Swiss duty if regime correctly closed |
| Year-end with bonded balances | Closing inventory at acquisition cost; optional disclosure on deferred customs liabilities | Assess write-downs under the prudence principle |
In practice, use separate analytical accounts or cost centres (“Bonded stock”, “Free-circulation stock”) and link each customs clearance invoice to the corresponding inventory issue. Accounting software integrated with item master data and purchase documents reduces the risk of distorted margins and VAT misaligned with periodic returns.
FOCBS obligations, risks and audits
Recurring compliance
- Timely movement and clearance declarations in the customs system
- Up-to-date goods accounts available for inspection
- Notification of changes (location, holders, volumes)
- Renewal of guarantees and review of deferral limits
Common SME mistakes
- Selling from bonded stock without prior customs clearance
- Mixing free and bonded goods without physical and accounting segregation
- Omitting duties from cost of sales after clearance (inflated margins)
- Underestimating guarantees when the customs value of inventory grows
Operational checklist for importers
Before structuring recurring imports through a bonded warehouse, check the following with your customs adviser and finance lead:
- Confirm that tariff code, preferential origin and any quotas are correct for each supply.
- Define the flow: order → bonded receipt → sale → clearance → customer invoice, with clear responsibilities between purchasing, warehouse and administration.
- Set up chart of accounts, inventory reason codes and bonded-stock reports in your accounting system.
- Model cash impact on a “full import vs quarterly clearance” scenario to size guarantees and bank facilities.
- Plan inventory and customs reconciliation before year-end close, to avoid last-minute corrections.
A bonded warehouse does not replace sound purchase forecasting, but—if managed with administrative rigour—it gives Swiss importing SMEs concrete leverage on liquidity and stock. Integrating customs data, warehouse and accounting in one digital flow is what keeps duty deferral a competitive advantage rather than a source of balance-sheet or VAT return errors.