Why port delays weigh on the balance sheet
SMEs importing goods by container know the pattern well: late vessels, slow customs, full warehouses. When a container stays beyond the agreed free days, the carrier or terminal invoices demurrage (time in port or at the terminal) and, once unloaded, often detention as well (delay returning the empty box). Amounts can jump from a few hundred to several thousand francs in just a few days.
In Switzerland, where many imports pass through Basel, Geneva, or foreign seaports linked by rail or truck, the risk is not only logistical: without a budget, shipment-level tracking, and clear accounting rules, penalties end up as “miscellaneous transport expenses” and distort the true cost of goods, customer margin, and quarterly liquidity.
This guide explains operational definitions, how to forecast and allocate costs internally, and how to record them in the accounts in line with Swiss accounting standards (FER / Swiss GAAP FER), in the typical context of an importing SME.
Demurrage, detention, and related costs: who invoices what
These terms appear on bills of lading, booking confirmations, and forwarder invoices. Confusing them makes it harder to challenge amounts or allocate them correctly:
| Item | Subject matter | Typical counterparty | Cost driver |
|---|---|---|---|
| Demurrage | Full (or empty, if applicable) container beyond free days in port / terminal / rail ramp | Shipping line, terminal operator | Days beyond allowance; tiered escalating rate |
| Detention | Container outside the terminal but not returned within “outside gate” free days | Carrier / container lessor | Days between pickup and return of the box |
| Terminal storage | Storage in the port area (distinct from carrier demurrage) | Terminal, inland port operator | Volume, duration, refrigeration if any |
| Chassis / per diem | Late return of chassis or equipment | Haulier, rental company | Days of use beyond agreement |
| Truck waiting time | Hours waiting to load/unload | Road carrier | Billable hours beyond tolerance |
In ocean transport contracts (often governed by Incoterms® and line terms) responsibility for pickup and return of the container may fall on the importer even when delay is caused by an upstream partner. For accounting, what matters most is which shipment or job the charge belongs to, not only who technically triggered it.
Free time and critical points along the import chain
Budgeting means mapping free days and billing triggers along the typical import-container flow in an SME:
1. Arrival and availability
Demurrage counting starts from the date on the notice (discharge / available), not necessarily the day admin receives the email. Align purchasing, logistics, and accounting on the same source (line portal or forwarder).
2. Customs clearance and release
Incomplete documents, pending VAT/duty declarations, or inspections delay pickup. Build buffers into customer delivery plans and into the calculation of free days you can actually use.
3. Haulage and in-house unloading
The container may be unloaded on site or at the forwarder’s warehouse: each extra day before returning the empty box adds detention. Plan unload slots and return within the same window when possible.
4. Administrative closure
Demurrage invoices arrive weeks later, sometimes consolidated across multiple containers. Without BL / container number reference in the ERP, allocation becomes costly manual work and error-prone.
Budget and forecasting: turning free days into numbers
A pragmatic SME approach is to set a risk rate per route (e.g. Asia–Europe via Rotterdam + rail) and update it quarterly with actual carrier invoice data.
Items to include in the budget sheet or ERP parameter:
- Average containers per month and mix of 20' / 40' / HC.
- Contractual free days (port + detention) by line and equipment type.
- Daily rate by tier (days 1–5, 6–10, over 10) in invoice currency.
- Probability of customs delay (e.g. 15% of shipments +2 days) based on internal history.
- Opportunity cost: capital tied up in unsellable goods and delays to B2B customers.
Simplified example (illustrative)
10 containers/month, 7 demurrage free days, average actual delay 9 days → 2 billable days × CHF 120/day × 10 = CHF 2,400/month for demurrage alone, before detention and storage. Even small slippages, multiplied by volume, hit foreign-trade EBITDA.
Including this line in the purchase budget (landed cost) avoids discovering at year-end an unexplained margin “hole” for auditors or stakeholders.
Internal allocation: who “pays” for the delay
Before posting to the ledger, define allocation rules to avoid conflict between purchasing, sales, and logistics:
| Scenario | Recommended allocation basis | Management note |
|---|---|---|
| Penalty on single BL / container | 100% to the shipment (purchase order or project) | Track container number on every cost line in the ERP |
| Multi-container consolidated invoice | Split by delay days × rate for each box | Request breakdown from forwarder before payment |
| Delay due to internal error (unload planning) | Logistics cost centre or internal job | Useful for KPIs and process review, not charged to the customer |
| Delay imposed by customer (deferred delivery) | Sales order job costing / contractual clause | Document written agreement for possible recharge |
| Force majeure (port strikes, severe weather) | Extraordinary reserve or proportional split by import volume | Review cargo insurance / contract clauses |
In Accountex or any structured ERP, the ideal is to link every supplier invoice to container number, BL, and purchase order, so reports and margins by item reflect penalties not foreseen on the original foreign supplier invoice.
Compliant accounting for SMEs in Switzerland
Swiss accounting standards (in particular Swiss GAAP FER) distinguish between cost of acquiring goods and period costs. Demurrage and detention are not customs duties or import tax: they are ancillary transport charges whose treatment depends on direct link to the shipment and the company’s inventory valuation policy.
Capitalisation in inventory
If the penalty is traceable to a specific stock line and the company systematically includes allocable freight and ancillaries in acquisition cost (full acquisition cost principle), the amount may be charged to inventory valuation and leave the income statement only on sale (COGS).
Consistent when delay is “normal” in the industry or contractually expected and does not represent an exceptional event that should be disclosed separately.
Period expense
Penalties from internal inefficiency, non-recoverable disputes, or amounts not allocable to individual lines should generally be recorded as operating expenses (e.g. transport / administrative expenses) in the period of the invoice.
Improves transparency for limited audit and makes it easier to analyse variances against the logistics budget.
Practical posting (outline)
| Transaction | Typical account (SME chart) | Supporting document |
|---|---|---|
| Demurrage invoice allocated to stock | Accounts payable / Accruals credit or direct inventory adjustment via landed cost | Invoice, BL, day statement, PO |
| Detention invoice as period cost | Transport expense (6xxx) / Accounts payable | Line invoice, proof of container return |
| Partial reversal from forwarder | Reverse original line; credit note linked to same shipment reference | Credit note, dispute email |
| Recovery from third party (customer / supplier) | Receivable vs expense counterpart or reduction of acquisition cost | Agreement, recharge invoice if applicable |
Documenting the accounting policy in an internal note (capital vs period, materiality threshold) reduces divergence between accounting and auditor, especially if import volumes grow quickly.
Customs, customs value, and VAT: points to watch
On import, customs duties and import tax (import VAT) are calculated on bases linked to the value of the goods, but not identical: for statistical and customs purposes (OGA), price, transport, and insurance up to the Swiss border generally count; for import tax the base includes, subject to exceptions, expenses up to the place of destination in Switzerland. Delay penalties usually do not form part of the customs value of the consignment if they arise after clearance; if in doubt, check with the customs authority or your tax adviser.
Demurrage/detention invoices often come from foreign providers (carrier, port agent). VAT treatment must be checked case by case under Arts. 8 and 45 of the Swiss VAT Act (LIVA): for many B2B services the place of supply is Switzerland (recipient’s seat), with possible acquisition tax if the supplier is not VAT-registered; services physically performed abroad may be located differently. If the supplier is VAT-registered in Switzerland, Swiss VAT must be charged. Common errors: failing to self-assess amounts subject to acquisition tax, or not deducting VAT shown on the invoice correctly.
For SMEs, the operational rule is to involve the customs/tax adviser team before paying large penalties, especially if the supplier invoices in USD/EUR and asks for offset against future shipments rather than a formal credit note.
Controls, disputes, and year-end close
A minimum set of internal controls protects margins and the audit trail:
- Monitor free days: automatic alert at −2 days to expiry for each container in transit.
- Three-way match: compare penalty invoice, line day statement, and actual gate out / empty return date.
- Disputes within contractual deadlines: many lines accept claims only within 30 days; archive evidence (EIR, terminal timestamps).
- Period-end accruals: if the invoice arrives after month-end close but the delay occurred in the financial year, consider accrual for matching (with documentation).
- Reporting: monthly demurrage+detention dashboard per CHF/container and per logistics supplier.
Annual close and audit
At year-end, reconcile penalties paid with closing inventory: verify that capitalised amounts are actually in stock or already released to COGS. For companies subject to ordinary or limited statutory audit (Arts. 727 and 727a CO; unless opt-out under Art. 727b CO), a per-container extract makes the auditor’s work easier and shows there are no “orphan” acquisition costs left unallocated.
Operational checklist for SME importers
- ✓Contracts and bookings: demurrage and detention free days recorded by line and equipment type.
- ✓ERP: mandatory container / BL fields on every import cost.
- ✓Landed cost budget includes penalty scenario based on quarterly history.
- ✓Written policy: capitalisation vs period expense, with threshold and approvals.
- ✓VAT/customs workflow with tax adviser for foreign penalty invoices.
- ✓Monthly review of open disputes and expected credit notes.
Demurrage and detention are not inevitable, but they are predictable and measurable. By integrating logistics, purchasing, and accounting in a single data flow—as modern accounting for Swiss SMEs enables—they shift from a “surprise” line item to a manageable parameter of import cost.