Guides
Supply chain risk and insurance: what is covered and what is not
How to map and score supplier risk, which insurance lines respond to supply chain losses, and the disruptions no policy covers: tariffs, strikes, insolvency.
Insurance covers a narrow slice of supply chain risk. It responds when a covered peril physically damages a supplier's property, when goods are lost or damaged in transit, when a customer fails to pay, or when a named vendor's computer systems fail, subject to each policy's trigger, schedule and sublimit. It generally does not respond to tariffs, strikes, port closures, a supplier going bankrupt, or a government blocking imports. For those, the protection is operational: knowing your suppliers, holding alternatives and writing the right contract terms.
How exposed are businesses?
The Allianz Risk Barometer 2026 surveyed 3,338 risk management experts in almost 100 countries and territories. Business interruption, including supply chain disruption, ranked third at 29 percent of respondents, having been first or second in every edition for 15 years. Only 3 percent of respondents rated their supply chains as highly resilient, and 51 percent named a global supply chain paralysis caused by a geopolitical conflict as the most plausible "black swan" scenario over the next five years. The report also found that contingent business interruption from supply chain events accounted for 15 percent of large cyber claims (over 1 million euros) by value in the first half of 2025, up from 6 percent in 2024 (Allianz Commercial). Respondents chose up to three risks, so the percentages show how many named each one, and they reflect opinions and one insurer's claims data rather than the whole market.
Step 1: map the chain
Start with a list, not a model. For each of your top suppliers by spend and by importance:
- What does it make, and what happens to your revenue if it stops for 2, 6 and 12 weeks?
- Where are its plants, and where does its own critical input come from? The second tier matters, and the coverage disputes in contingent business interruption insurance and supply chain risk often turn on suppliers the buyer never listed.
- Can anyone else make it? How long would an alternate take to qualify, test and ramp up?
- What does it depend on that is shared with your other suppliers: one port, one rail line, one cloud provider, one power grid?
A short list usually shows the real problem: one sole-source part, one port, or one vendor behind several of your suppliers.
Step 2: score and rank
A simple grid beats an elaborate model that no one maintains. This hypothetical example scores each supplier from 1 (low) to 3 (high) on five factors, then sums.
| Factor | What a 3 means |
|---|---|
| Criticality | Stopping it halts production or sales within days |
| Concentration | Single or sole source |
| Substitutability | Months to replace |
| Geography | One hazard-exposed region, or a politically unstable one |
| Financial health | Weak balance sheet, late payments, ownership changes |
Rank the totals, and put the top five or ten in your how to build a risk register. A supplier that scores 3 on four of five factors is a board-level exposure, whatever its share of spend.
Step 3: put a dollar figure on it
The arithmetic is simple: contribution margin per day, times the days you cannot replace the supply, minus the days you can cover from inventory.
Hypothetical example. Say a 60-employee electronics assembler loses $40,000 of contribution margin per day when production stops. It holds 10 days of a sole-source component in stock and expects 60 days to qualify an alternate source. The uncovered exposure is 50 days times $40,000, or $2 million. Carrying a few more weeks of stock may cost far less than that, and the same figure frames the insurance question: does a policy pay any of that $2 million? The business income (interruption) limit calculator helps size a loss.
Step 4: reduce the exposure
- Dual sourcing or qualified alternates. Qualify a second supplier on a small share of volume so it can scale in a crisis.
- Safety stock on the few parts that are sole-source or have long lead times.
- Geographic spread so one flood, quake or political event does not hit both sources.
- Supplier visibility. Monitor financial health, ownership changes, and shipping or weather alerts for top suppliers.
- Customs diligence. Under the Uyghur Forced Labor Prevention Act, goods made wholly or partly in the Xinjiang region or by listed entities are presumed barred from import, and an importer must show by clear and convincing evidence that they were not made with forced labor (rebuttable presumption in effect since June 21, 2022, per CBP). Detained goods are an uninsured delay, so trace sub-tier inputs for goods at risk.
- Business continuity. Test the plan with a table-top exercise. See writing a business continuity plan: a step-by-step guide.
Step 5: write supplier contracts that help
Contract terms shift some risk without insurance. Look for:
- Force majeure clauses. These excuse a supplier from delivering during events beyond its control. Read the list of events, the notice period, and whether you can cancel or buy elsewhere without penalty when the supplier is excused. In sales of goods, the Uniform Commercial Code (sections 2-615 and 2-616 where adopted) also lets a seller allocate short supply among customers in a fair and reasonable manner, which is why a contract priority clause matters.
- Notice and information duties. Require prompt notice of any event that could delay shipment, and a contingency plan on request.
- Insurance and indemnity. Require insurance, including contingent or dependent coverage for critical suppliers, and an indemnity. See contractual risk transfer: shifting liability by contract and insurance.
- Audit and step-in rights, tooling ownership, and the right to qualify a second source.
- Payment terms that do not leave a financially weak supplier starved of cash.
Step 6: match the insurance to the exposure
| Disruption | Coverage that may respond | Typical limits of the coverage |
|---|---|---|
| Fire, flood or storm at a supplier or customer | Contingent business income on the property policy | Needs physical damage; usually named or scheduled locations and sublimits for unnamed ones |
| Goods damaged or lost in transit | Inland marine, motor truck cargo, ocean cargo (ocean marine and cargo insurance: how shipment and vessel coverage works) | Who bears risk of loss depends on the sales terms; see incoterms and who insures goods in transit; cargo forms generally do not pay for delay |
| Customer fails to pay | Trade credit insurance (trade credit insurance: protecting receivables from customer default) | Covers insolvency or protracted default of insured buyers, within credit limits |
| IT or cloud vendor outage | Cyber dependent business interruption (cyber business interruption and dependent system failure) | Sublimits, waiting periods and sometimes named providers only |
| Power or water loss | Utility services endorsement | Waiting periods; physical damage to utility property generally required |
| Political violence, expropriation, currency restrictions | Political risk insurance | Specific to foreign operations or investment |
| Weather or earthquake index event | Parametric insurance | Pays on the index, not the actual loss |
| Contaminated or defective component | Product recall and product liability | See the recall and liability guides |
Not covered in most programs: tariffs and trade policy, strikes and labor disputes at suppliers, a supplier's bankruptcy, port congestion without physical damage, and a regulator's import ban. Those risks sit with you.
Review the property policy for waiting periods, the number of days of income covered, whether sublimits apply to tier-two suppliers, and the policy territory. Standard ISO forms limit coverage to the United States, Puerto Rico and Canada, so overseas suppliers need explicit wording. Manuscript and carrier forms differ; ask your broker to run your supplier list against the schedule.
A hypothetical sequence
A furniture maker lists its foam supplier in the policy schedule but not the chemical plant that supplies the foam maker. A fire at the chemical plant stops the foam maker, and the furniture maker's output. The contingent coverage in this example responds only to scheduled locations and the chemical plant is not on the list, so the insurer applies the lower unnamed-location sublimit, or none. Had the owner mapped tier two, the plant would have been on the schedule or a second source qualified. The example is invented but follows the pattern seen in court disputes.
Key takeaways
- Insurance responds to physical damage, transit loss, customer insolvency and named system failures; most supply chain disruptions, including tariffs, strikes and supplier bankruptcy, are uninsured.
- Map critical suppliers down to the second tier, and look for sole sources and shared dependencies.
- Quantify exposure: daily contribution margin times uncovered days. That number decides how much to spend on stock, alternates and coverage.
- Contract terms such as force majeure, notice duties and insurance requirements are part of the program.
- Check the property policy's dependent property schedule, sublimits, waiting period and territory at every renewal.