The Catastrophe Reinsurance Black Hole: What No One in Taiwan Will Insure, Between the Earthquake Belt and Geopolitical Risk

On 21 January 2025, a magnitude-6 earthquake struck Tainan — right at the southern end of Taiwan's high-tech corridor. Munich Re's subsequent assessment: the earthquake caused roughly USD 1.3 billion in total losses, of which about USD 600 million was insured, and a substantial share of the insured claims came from business-interruption policies in the semiconductor industry^[4].

This combination of numbers is worth pausing over. It says two things at once:

First, the insured losses from this earthquake show that cleanroom shutdowns, work-in-progress losses, and line restarts can push business interruption (BI) into a major cost category. Second, whether ordinary households and small and medium-sized enterprises (SMEs) can obtain adequate compensation still depends on their coverage, policy terms, and actual losses.

Taiwan sits astride two fault lines. One is geological — the Pacific Ring of Fire. The other is geopolitical — the Taiwan Strait. When the global reinsurance market reprices both of these fault lines, whatever gets left outside the policy is what this report calls the "catastrophe reinsurance black hole."

This is not alarmist insurance-industry salesmanship. It is a question of national resilience: when disaster strikes, whether the economy can recover quickly on the back of insurance payouts determines the speed of recovery. And in a few critical areas, Taiwan is precisely underinsured.

Pull the lens back first. The protection gap referenced in Swiss Re's Natural Catastrophe Insurance Resilience Index is the difference between premiums actually written and the premiums that would be needed to fully cover the model-projected economic loss; it is not the actual economic loss in a given year minus insured losses. In 2025, this premium-equivalent global gap rose from USD 395 billion the previous year to USD 424 billion^[3].

This definition matters: in the same year, there can simultaneously exist an "uninsured portion of historical losses" and a "modeled, premium-equivalent protection gap" — the two are not interchangeable. Swiss Re notes that accumulating exposure keeps pushing the absolute size of the gap upward, even as the growth of insurance protection has not stalled^[3].

Regional differences are even more worth noting. Swiss Re estimates that about 92% of Asia's natural catastrophe losses were uninsured in 2025; this is an estimate of the loss burden across Asia as a whole, and cannot be taken directly as Taiwan's own take-up rate — but it does describe the backdrop against which reinsurance capital confronts accumulating regional risk^[6].

The implication for Taiwan is direct: reinsurance is a globally interconnected market. When Asia-Pacific risk, and "earthquake" as a line of business, become more expensive and harder to place in international reinsurers' models, Taiwan does not get exempted just because its own policies sell well. The reinsurance capacity Taiwan needs to buy is priced in competition with the entire world, in the same pool.

Taiwan is not unprepared. Residential Earthquake Basic Insurance is a carefully designed public-private mechanism, supervised by the Insurance Bureau of the Financial Supervisory Commission (FSC), with the Taiwan Residential Earthquake Insurance Fund (TREIF) coordinating risk dispersion^[1][2].

Its logic is layered risk-bearing: the total liability cap for a single earthquake event is NT$115 billion, of which the portion between NT$98.2 billion and NT$115 billion is borne by the government; the rest is dispersed through co-insurance, domestic and international reinsurance, and capital-market mechanisms^[1]. As of the end of 2025, the fund's usable capital stood at roughly NT$54.8 billion, with total reserves of about NT$48.6 billion; reinsurance premium income for the year was approximately NT$5.05 billion^[1].

But the problem lies on the demand side, not the institutional side.

As of 30 June 2026, there were 3,815,819 valid Residential Earthquake Basic Insurance policies nationwide, with an average take-up rate of 39.671%^[1]. Against the nationwide household count used by the fund as the denominator, roughly six in ten households still do not hold this basic policy; individual claims and the scope of coverage must still be judged case by case according to policy terms and loss assessment.

This is the first black hole in Taiwan's catastrophe coverage: the take-up rate is only about four in ten, and the sums insured fall well short of reconstruction cost. However well the institution is designed, it cannot catch the six in ten households that never bought the policy, or bought too little.

Seen from another angle: what actually magnifies Taiwan's exposure enough to make international reinsurers nervous is concentration risk on the corporate side — especially in the semiconductor industry.

Back to the roughly USD 600 million in insured losses from the Tainan earthquake. It is a reminder to companies: when high-precision manufacturing is concentrated in an earthquake-risk zone, line shutdowns, supply-chain disruption, and recovery time — beyond property damage itself — must be built into insurance and business-continuity management.

Munich Re notes that semiconductor manufacturing in ultra-clean rooms is highly precise; when production is interrupted, unfinished semiconductors can become scrap^[4]. This is a reminder for companies to fold business interruption (BI) and contingent business interruption (CBI), beyond property loss, into their own policies and business-continuity reviews — rather than inferring from a single incident that every company faces the same rates or underwriting outcomes.

For companies, semiconductors and high-precision manufacturing stack property loss, business interruption, supply chain, and political risk on top of one another; renewal terms, rates, and available limits still have to be determined by the individual policy, the risk information provided, and the underwriting market — they cannot be extrapolated from a single incident to the whole market.

This is where the second black hole in Taiwan's catastrophe coverage appears: the BI and CBI coverage gap. Many companies — especially small and medium-sized suppliers in the supply chain — insure only the "tangible loss" of their plant and equipment, while underestimating the revenue loss and contractual penalties incurred during downtime; fewer still cover the contingent loss of "my upstream customer or supplier gets hit, and I am forced to stop production as a result." When a single earthquake simultaneously strikes a whole cluster of firms clustered in science parks in central and southern Taiwan, this kind of concentration is exactly the part reinsurers most want to reprice upward, or even restrict.

What deserves particular vigilance is that geographic and industrial concentration raises the likelihood that a single event will simultaneously trigger property, business-interruption, cargo, and downstream-customer contingent losses. Companies should run accumulation-risk stress tests using their own plant locations, suppliers, backup capacity, and policy limits, rather than assume from media narratives that the market as a whole has already settled on uniform rate or exclusion-clause changes.

If earthquake is a case of Taiwan being "underinsured," then Taiwan Strait geopolitical risk is a case of being "almost uninsurable."

War risk insurance is a separate, highly sensitive market. The London market's Joint War Committee (JWC) Listed Areas is a high-risk notice that must be reported to underwriters before a voyage; rates, added conditions, and whether cover is renewed or cancelled are still negotiated between underwriter and insured on a policy-by-policy basis^[5].

The availability of marine and air transport, property, and political-risk cover in a Taiwan Strait scenario cannot be inferred directly from events in other regions. What can be said with confidence is this: when risk escalates, underwriting conditions, rates, and notification obligations can change quickly; whether an individual company is covered must be checked policy by policy against its war exclusion clauses, period of cover, and notice to underwriters. Availability and pricing under an extreme conflict scenario are highly uncertain — it cannot be assumed that commercial insurance will necessarily fill the gap, nor that it will necessarily fail.

There are two defensible readings of this black hole, worth placing side by side.

One view: this is natural market pricing, and a healthy signal. Reinsurers convey accumulating risk through pricing, limits, and terms — that does not necessarily amount to market failure. Companies that can supply more granular information on disaster preparedness, backup capacity, and exposure are better positioned to negotiate suitable terms with underwriters; but systemic risk still cannot be handled by a single policy alone.

The other view: this is a systemic shortfall in coverage that harms overall resilience. The issue is that insurance is not only a private good — it also affects how quickly funding reaches recovery after a disaster. With the residential take-up rate still under four in ten, and corporate BI/CBI coverage highly dependent on individual policies, the protection gap can shift part of the loss onto self-retention, bailout funding, or financing pressure. Swiss Re lists narrowing the protection gap as one factor in improving economic resilience^[3]; how far the public sector should step in remains a policy choice, not something a single number can settle.

The disagreement between these two views is not about the facts, but about the value choice of who should pay for catastrophe resilience. The reinsurance market is responsible for pricing diversifiable risk; but non-diversifiable, systemic tail risk — the concentrated losses of a major earthquake, or a Taiwan Strait conflict — inherently requires intervention by state-level mechanisms. This is precisely why countries develop public catastrophe pools, catastrophe bonds, and national reinsurance backstops.

The State: Turning the "Uninsurable Tail" into an Institutional Backstop

Taiwan already has the residential earthquake fund as its foundation^[1], but the gaps sit at two ends — the household take-up rate, and catastrophe BI for enterprises and infrastructure. What the state can do at the national level is not to underwrite war risk in place of the commercial market — that is not realistic — but rather: (1) raise the penetration rate of residential earthquake insurance (for example, by linking it to mortgages, improving disclosure, and subsidizing rates for disadvantaged households); (2) expand catastrophe bond (cat bond) issuance, selling Taiwan's earthquake tail risk to global capital markets to reduce dependence on a single international reinsurance renewal cycle; and (3) build a public–private catastrophe and resilience backstop for critical infrastructure and the supply chain, and run financial-resilience stress tests specifically for a "Taiwan Strait scenario," rather than pretending it can be covered by commercial insurance. The goal is to shift systemic tail risk from "after-the-fact bailout" to "before-the-fact institution-building."

Industry and Insurance Intermediaries: Upgrading from "Insuring Property" to "Insuring Business Continuity"

The value of insurance brokers and property-casualty insurers is shifting from "selling a property policy" to "helping companies survey their business-continuity gaps." The concrete actions are: turn the BI/CBI coverage gap into a standardized check-up, so companies can see the gap where "the plant is insured, but three weeks of lost revenue and contractual penalties during a shutdown are not"; negotiate and renew earthquake BI separately from war risk/political risk, so that a single high-risk line does not drag down the terms of the whole negotiation; and use plant locations, backup capacity, suppliers, and policy limits to explain actual accumulated risk to underwriters. Rates and available limits are still determined by the individual policy and the underwriting market.

SMEs: Recognize First That You Are More Likely to Go Under from "Downtime" Than from "Plant Collapse"

For SMEs in the supply chain, the most practical statement is: what typically brings you down is not damage to the plant itself, but the cash-flow break and customer defaults during downtime. Action checklist: (1) don't insure only the property itself — always check whether you have business interruption (BI) and contingent business interruption (CBI) cover, and make sure the sum insured matches the real loss from three weeks to three months of downtime; (2) confirm the scope of the "war exclusion" clause in your policy, so you don't mistake a war-risk gap for coverage you already have; (3) treat insurance as one part of a resilience portfolio, not the whole of it — pair it with safety stock of critical materials, backup suppliers, and off-site redundancy, using diversification to cover the part insurance cannot reach. On an island where an earthquake belt is layered on top of geopolitical risk, resilience cannot be outsourced to a single policy.

The essence of the catastrophe reinsurance black hole is a harsh fact: the risks that are most systemic, most correlated, and most likely to occur simultaneously are exactly the risks insurance is least willing to take on. Taiwan's answer cannot simply be "buy more insurance" — it has to be filling in, piece by piece, at the state, industry, and enterprise levels, whatever insurance cannot catch, through institutions, negotiation, and diversification.

Companies do not need to wait until a renewal quote arrives before starting this work. A more actionable approach is to place plant, equipment, inventory, work-in-progress, key suppliers, and single-customer concentration all on the same exposure sheet, marking separately the direct losses and cash-flow timing gaps that earthquake, flooding, power outage, line stoppage, and logistics disruption would each cause. This sheet cannot replace a policy; its purpose is to let finance, operations, and the insurance broker discuss, under the same set of assumptions, which losses are already insured, which should be self-retained, and which can be reduced through backup capacity or contract terms. The residential earthquake insurance fund's statistics can be used to understand the background of residential coverage, but companies still need to determine their own risk tolerance using their own policy limits and operating data ^[1][2].

The price and capacity of the reinsurance market are external conditions, not variables a company can control on its own; that makes the quality of the information provided before renewal especially important. Companies can prepare disaster-prevention investment, equipment maintenance records, backup suppliers, recovery time objectives, and the basis for calculating business interruption, so that what underwriters assess is actual exposure rather than an abstract industry label. Where marine transport or cross-border cargo is involved, the voyage, notification obligations, war exclusions, and cancellation clauses should be separately confirmed; the JWC's risk notice is a starting point for negotiation, not a uniform answer as to whether any given company is covered ^[5]. This kind of line-item review will not necessarily reduce every risk, but it can prevent different lines of insurance and different trigger conditions from being blended into an unworkable "catastrophe black hole."

Finally, this kind of review should have a scheduled refresh date. New equipment coming online, changes in supplier concentration, a major disaster, updated policy terms, or rising shipping risk can all change the original answer. Each update should retain its assumptions, data cutoff date, and the person responsible, so that what a board or regulator sees is not a tidy coverage percentage, but who bears the risk under different scenarios. This is also the starting point for turning insurance from a procurement item into a resilience-governance tool; genuinely effective management is being able to say clearly, before an incident occurs, who decides the next step, where the funding comes from, and how the recovery sequence is ordered.

Only continuous rehearsal will make this review genuinely usable when a crisis actually arrives.