Stock Throughput Insurance for Singapore Importers — Is It Worth It?

What Stock Throughput Insurance Actually Covers

A stock throughput policy is a hybrid: it combines marine cargo cover with inland transit and storage cover under one set of terms, one deductible structure, and one insurer (or co-insurance panel). The policy attaches at the point of manufacture or purchase and remains in force through ocean transit, port handling at PSA Tanjong Pagar or Pasir Panjang, bonded or licensed warehouse storage, and onward inland or regional distribution — right up to the moment title passes to your buyer or the goods are consumed in production.

The marine leg is typically written on Institute Cargo Clauses (A) terms, which provide all-risks cover subject to the standard exclusions (inherent vice, delay, wilful misconduct, war and strikes unless separately endorsed). The storage and inland legs are written on equivalent all-risks property terms. Because it is one policy, there is no argument between a cargo insurer and a property insurer about which policy responds when a loss occurs in a warehouse that is also a transit point — a dispute that costs Singapore importers real money every year.

War and strikes cover for the ocean leg can be added by endorsement, typically referencing the Joint War Committee listed areas. If your supply chain touches the Strait of Malacca, South China Sea routing, or transhipment hubs with onward legs through higher-risk corridors, your broker needs to confirm that the war endorsement attaches at the same point the marine leg does — not only while the vessel is at sea.

• Physical loss or damage from origin warehouse through ocean transit and PSA handling
• Storage risk in bonded, licensed, or third-party logistics (3PL) warehouses in Singapore and APAC
• Inland transit by road, rail, or feeder vessel to upcountry or regional buyers
• General average contributions arising under York-Antwerp Rules (your cargo's share of a common sacrifice)
• Sue-and-labour costs — reasonable expenditure you incur to prevent or minimise a covered loss
• Optional: war, strikes, riots and civil commotion on the marine and inland legs

How STP Compares to an Open Cargo Policy Under Institute Cargo Clauses

Most Singapore importers start with an open cargo policy on Institute Cargo Clauses (A) terms. That policy covers each shipment from the moment goods leave the seller's warehouse until delivery at your named destination — the 'warehouse-to-warehouse' clause. The problem is that 'warehouse' in ICC (A) is interpreted narrowly: once goods have arrived at the destination warehouse and a reasonable time for delivery has elapsed, cover lapses. If your business model involves holding stock for weeks or months before onward sale, you are uninsured during that period unless you have a separate property policy.

The second gap is the handover point. When goods are transhipped at a PSA terminal — Singapore handles an enormous volume of transhipment cargo — there can be a period where the first carrier has discharged and the second carrier has not yet issued a bill of lading. ICC (A) cover is tied to the contract of carriage; if there is no active contract, cover may be suspended. STP eliminates this ambiguity by attaching to the goods, not to the transport document.

A third consideration is subrogation and recovery. Under a standard ICC (A) policy, your insurer will subrogate against the carrier under the applicable carriage convention — Hague-Visby Rules for most Singapore-origin bills of lading, or potentially Hamburg Rules depending on the flag state and port of loading. The carrier's liability under Hague-Visby is capped at SDR 2 per kilogram or SDR 666.67 per package, whichever is higher. For high-value electronics, pharmaceuticals, or luxury goods, that cap is almost always less than the commercial value of your loss. STP pays your full insured value first; recovery from the carrier is the insurer's problem, not yours.

When STP Makes Commercial Sense for Singapore Importers

STP earns its premium when your inventory spends significant time in storage between transit legs, when you hold safety stock at multiple APAC locations, or when your goods are high-value relative to weight (making carrier liability caps commercially irrelevant). Consumer electronics, semiconductors, pharmaceuticals, fast-moving consumer goods with complex regional distribution, and perishables held in controlled-atmosphere warehouses are all categories where STP is routinely the more efficient structure.

It also makes sense when you are managing a large number of individual shipments under a single commercial programme. Rather than declaring each shipment separately and managing multiple certificates, STP operates on a stock-value basis: you report your average or maximum stock value at each location, and the policy responds to any loss within that declared value. This simplifies your finance team's work and removes the risk of an undeclared shipment falling outside cover.

Where STP is less compelling: if your goods move directly from port to buyer with minimal dwell time, if your cargo is bulk commodity with low value-to-weight ratios, or if your buyers take title at the port gate and carry their own cover from that point. In those cases, a well-structured open cargo policy on ICC (A) terms with a properly drafted continuation clause is likely sufficient and more cost-efficient.

Singapore-Specific Considerations: MAS, PSA, and Bonded Warehouses

Insurance placed in Singapore for Singapore-domiciled risks falls under the Insurance Act and is regulated by the Monetary Authority of Singapore (MAS). Your STP policy should be placed with an MAS-licensed insurer or through a licensed intermediary. Policies placed offshore — including through entities in DIFC or ADGM if you have a regional structure — may not be enforceable in Singapore courts without additional steps, and claims handling can become complicated if the insurer is not subject to MAS oversight.

PSA terminals operate under Singapore Customs' licensed warehouse framework. Your STP policy must explicitly name or describe the PSA terminal, bonded warehouse, or free-trade zone location where your goods are held. A policy that covers 'Singapore warehouse' without specifying the licensed premises may face a coverage argument if the insurer's surveyor determines the location was not within the policy's geographic scope. Ask your broker to confirm that the policy schedule lists every storage location by name and address before binding.

If your goods are held under a Customs-licensed warehouse scheme — common for dutiable goods like alcohol, tobacco, or petroleum products — your STP policy needs to interact correctly with the customs bond. The insurer's interest in the goods and the customs authority's interest in the duty are separate, but a loss that triggers a duty liability can create a cash-flow problem if your policy does not respond quickly. Discuss with your broker whether the policy should include a duty-liability extension or whether a separate customs bond insurance is more appropriate.

What to Bring to Your Broker Before Requesting a Quote

Underwriters pricing STP need more information than they do for a single-shipment cargo policy. The more complete your submission, the more accurately the policy will be priced and the fewer coverage gaps will appear at claim time. Prepare the following before your first conversation.

Your broker will use this information to approach specialist underwriters in the Singapore company market or London market who have appetite for APAC stock throughput risks. Capacity for STP in Singapore has grown significantly as regional supply chains have become more complex, but underwriters remain selective about commodity type, storage conditions, and loss history.

• A full list of storage locations: name, address, construction type (concrete, steel frame, timber), fire suppression systems, and whether the warehouse is third-party or owner-operated
• Average and maximum stock values at each location, broken down by commodity type
• Annual import volume and value, with a breakdown by origin country and shipping route
• Details of your existing cargo and property policies, including current insurer, expiry dates, and any claims in the past five years
• Your standard purchase and sale contracts — specifically, the Incoterms used, which determine when risk passes and whether your STP policy needs to attach at origin or only at Singapore port of discharge
• Any temperature, humidity, or handling requirements for your goods that affect storage risk
• Details of any transhipment legs, particularly through ports in higher-risk regions

Policy Structure, Deductibles, and Renewal Triggers

STP policies are typically written on an annual basis with a declared maximum value (DMV) at each location. The premium is calculated on the DMV, and you are required to report actual stock values periodically — monthly or quarterly depending on the policy terms. If your actual stock value at any point exceeds the DMV, you may be underinsured at the time of a loss. Your broker should build in a margin above your expected peak stock value, particularly if your business is seasonal.

Deductibles on STP policies are usually applied per occurrence, not per location. This matters when a single event — a warehouse fire, a typhoon, a flood — affects stock at multiple locations simultaneously. Confirm with your broker whether the deductible applies once per event or once per location per event; the difference can be material for a large loss.

At renewal, underwriters will review your stock declarations, any claims or near-misses, and changes in your supply chain. If you have added new storage locations, changed commodity mix, or expanded into new APAC markets, notify your broker before renewal rather than after — mid-term changes that are not endorsed onto the policy can create coverage gaps that only become visible when you need to make a claim.

Frequently asked questions

Do I need STP if I already have an ICC (A) open cargo policy?

Not necessarily — but you need to check two things. First, does your open cargo policy cover goods while they are in storage at your warehouse or 3PL, or does cover lapse once the shipment has 'arrived'? Second, does it cover transhipment dwell time at PSA terminals between carrier legs? If either answer is no or uncertain, STP is worth a direct comparison. Bring your current policy wording to your broker and ask them to map it against your actual supply chain — not the idealised version.

What happens if a loss occurs during transhipment at a PSA terminal?

Under a standard ICC (A) policy, cover is tied to the contract of carriage. During transhipment, there may be a period where the first carrier has discharged and the second has not yet issued a bill of lading. STP attaches to the goods themselves, so there is no coverage gap during terminal dwell. Your insurer will still subrogate against the terminal operator or carrier if they are at fault, but you are paid first under your own policy rather than waiting for a liability determination.

How long does it take to bind a stock throughput policy in Singapore?

For a straightforward commodity with clean loss history and well-documented storage locations, a broker with established underwriter relationships can typically bind cover within five to ten working days of receiving a complete submission. Complex risks — multiple APAC locations, mixed commodity types, significant prior claims — take longer because underwriters may require a survey of storage premises before quoting. Do not leave this to the week before your existing policy expires.

What do you need from me to get a quote?

At minimum: a list of all storage locations with construction details and fire suppression systems, your average and peak stock values by location and commodity, your annual import volume and origin routes, your current policy documents, and your five-year claims history. The more complete this is, the more accurately underwriters can price the risk — and the fewer exclusions or sub-limits they will impose.

Does STP cover my goods if a supplier's warehouse burns down before shipment?

It can, if the policy is structured to attach at the point of manufacture or purchase at origin. This is one of the key decisions in policy design: do you need cover from the supplier's premises, or only from the point your goods are loaded onto the vessel? If your purchase contracts are on Ex Works or FCA Incoterms, you bear risk from the supplier's factory gate and your STP should attach there. If you are buying on CIF or CIP terms, the seller carries the risk to the named destination and your STP can attach at port of discharge. Get your Incoterms confirmed before your broker submits to underwriters.

What happens to my STP cover if I add a new warehouse mid-policy?

You must notify your broker immediately and request a mid-term endorsement adding the new location to the policy schedule. Goods held at an unlisted location are not covered, regardless of whether the location is similar to your other warehouses. Most STP policies require written endorsement before cover attaches at a new premises — verbal notification to your broker is not sufficient. Build this into your internal process for any new logistics or warehousing arrangements.