Reinsurance
Reinsurance: 44 technical terms explained – definition, synonyms and legal basis.
Commutation
Synonyms: Ablösung, Reinsurance settlement
Commutation is the final financial settlement of a reinsurance contract, under which the ceding insurer gives up all rights in exchange for compensation and the reinsurer is released from all obligations.
Concept
In a commutation, the ceding insurer gives up all rights under a reinsurance contract in exchange for corresponding compensation; in return, the reinsurer is released from all obligations under that contract.
Forms
The transaction can take the form of an immediate, one-off payment that discharges all rights and obligations at once (commutation in the narrow sense), or of a gradual run-off in which the contract continues with a discount applied to the outstanding claims (settlement).
Significance
Commutation allows both parties to end long-term uncertainty around hard-to-estimate late claims, achieve balance sheet clarity, and free up capital that would otherwise be tied up in open reserves.
Acquisition Cost Financing
Synonyms: New business financing
Acquisition cost financing is the financing of a primary insurer's initially high acquisition costs through specially structured reinsurance arrangements, such as development quotas or finite quota shares.
Concept
Acquisition cost financing refers, in reinsurance, to the financing of acquisition costs through specially structured traditional reinsurance treaties, so-called development quotas, as well as through financial reinsurance concepts such as a finite quota share.
Background
Young and/or rapidly growing insurance companies can face substantial financing needs, since their initially above-average operating and administrative expenses – for example due to high acquisition commissions – affecting both earnings and liquidity, may exceed their own resources.
Effect
Such reinsurance structures relieve pressure on the primary insurer’s liquidity and earnings by amortizing part of the initial costs over the lifetime of the new business, rather than charging them in full immediately.
Treaty Adjustment
Synonyms: Adjustierung
Treaty adjustment is the contractual alignment of a reinsurance treaty with actual business performance, achieved through variable premiums or sliding scale commissions.
Concept
Treaty adjustment describes, in reinsurance, the alignment of the treaty’s terms with actual business performance through variable contract components.
Non-Proportional Reinsurance
In non-proportional reinsurance, adjustment can take the form of a variable premium that allows the reinsurer to charge a higher premium, within defined limits, in the event of adverse loss experience (loading). Treaty terms may also be adjusted via an index clause.
Proportional Reinsurance
In proportional reinsurance, adjustment is often achieved through a sliding scale commission, under which the commission paid to the cedent is increased or decreased depending on how loss experience develops.
Adverse Development Cover (ADC)
Synonyms: ADC
An adverse development cover retrospectively protects a primary insurer against under-reserving of past claims, with the reinsurer assuming payments above an agreed attachment point.
Concept
An adverse development cover is a retrospective form of reinsurance that protects a primary insurer against run-off risk arising from inadequate reserving or an unforeseen need to increase booked claims reserves for incurred but not reported (IBNR) claims and/or already reported claims.
Methodology
The reinsurer is liable, up to a predefined limit (the layer), for cumulative claims payments from a portfolio that exceed an agreed attachment point. That attachment point typically equals or exceeds the primary insurer’s expected loss reserve. The reinsurance premium is essentially derived from the present value of expected future claims payments for losses that have already occurred.
Practical Relevance
ADCs are frequently used in connection with company acquisitions, portfolio clean-ups, or solvency optimization, allowing balance sheet risk from legacy business to be transferred in a targeted manner.
Aggregate
Synonyms: Accumulation
An aggregate is the sum of a risk carrier's exposures under certain perils, calculated as the basis for a reinsurance arrangement, for example to determine an attachment point and limit.
Concept
An aggregate is the sum of a risk carrier’s exposures under certain perils, such as windstorm, earthquake, or flood, calculated as the basis for a reinsurance arrangement.
Application
In casualty and property reinsurance, the term “aggregate” is also used when multiple individual losses are combined under one cover through an occurrence or hours clause. Summing individual losses is likewise important for correctly determining the attachment point and limit of a stop-loss cover.
Relevance to Accumulation Control
Precise aggregate formation is a central part of a reinsurer’s accumulation management, as it reveals the actual concentration of risk in geographic regions or under specific perils, thereby significantly influencing capacity allocation and pricing decisions.
Assumed Reinsurance
Synonyms: Aktive Rückversicherung, Inward reinsurance
Assumed reinsurance is the offering of reinsurance capacity and the underwriting of reinsurance covers by a reinsurer, as opposed to ceded reinsurance from the cedent's perspective.
Concept
Assumed reinsurance describes the offering of reinsurance capacity and the underwriting of reinsurance covers by a reinsurer. The term is sometimes also referred to as “inward” business.
Distinction
The counterpart to assumed reinsurance is ceded reinsurance – from the primary insurer’s perspective, the transfer of risk to a reinsurer. Both terms describe the same transaction from the opposing perspectives of the two contracting parties.
Significance
The distinction between assumed and ceded business is particularly relevant for the internal steering and reporting of reinsurance companies, which frequently both cede risk (retrocede) and offer their own reinsurance capacity in the market.
Reinsurance Acceptance
Synonyms: Akzept
Reinsurance acceptance is the legally binding acceptance of a reinsurance offer by the reinsurer, communicated to the primary insurer or reinsurance broker.
Concept
Reinsurance acceptance is the legally binding acceptance or confirmation of a reinsurance offer by the reinsurer, communicated to the primary insurer and/or the placing reinsurance broker.
Role in the Contracting Process
The reinsurance contract only becomes legally binding upon acceptance. Until that point, the submitted offer – for example in the form of a slip in facultative reinsurance – remains non-binding on the reinsurer, who may still adjust terms, capacity, or participation.
Practical Relevance
For complex programs placed with multiple reinsurers, the timing and scope of each acceptance must be carefully documented to clearly establish the inception of cover, participation shares, and the allocation of responsibilities among the participating reinsurers.
Alternative Reinsurance
Synonyms: Non-traditional reinsurance
Alternative reinsurance is the umbrella term for non-traditional forms of reinsurance products that go beyond pure risk transfer, such as financial reinsurance or ART.
Concept
Alternative reinsurance is the umbrella term for “alternative” designs of reinsurance market products, whether in terms of their objectives – going beyond pure transfer of insurance risk – or in terms of the type of equalization or risk transfer mechanism used.
Forms
This umbrella term covers both financial reinsurance concepts, which primarily serve earnings and liquidity management, and alternative risk transfer concepts, for example through captive (re)insurance companies or capital-market-based instruments.
Distinction from Traditional Reinsurance
While traditional reinsurance focuses primarily on pure risk transfer, alternative reinsurance often pursues additional objectives such as balance sheet optimization, smoothing of earnings volatility, or targeted capital release.
Alternative Risk Transfer (ART)
Synonyms: ART
Alternative risk transfer refers to the transfer of insurance risk to the capital markets or to specialized risk carriers outside traditional (re)insurance.
Concept
Alternative risk transfer (ART) refers to the transfer of insurance risk to the capital markets for absorption by non-traditional risk carriers and instruments. The transfer of risk to specialized, group-internal legal entities for self-financing purposes is also considered part of ART.
Risk Carriers and Applications
Besides primary insurers, reinsurers, and captive (re)insurance companies, risk carriers under ART also include banks and institutional investors. Typical applications include catastrophe risk, terrorism risk, and liability risk, as well as mortality risk and longevity risk in life and health insurance.
Characteristics
ART concepts span a broad spectrum between pure risk transfer and risk financing. They are usually tailor-made and more flexible in structure than traditional reinsurance solutions, but often require greater structural and legal complexity.
Attachment Point
Synonyms: Priority
The attachment point is the loss amount above which a reinsurer becomes liable to respond under a non-proportional reinsurance cover.
Concept
The attachment point, also referred to as the priority, is the loss amount above which a reinsurer becomes liable to respond under a non-proportional reinsurance cover. Losses below this threshold remain entirely with the primary insurer or cedent.
Mechanism
Together with the limit (the maximum amount up to which the reinsurer is liable), the attachment point defines the layer structure of an excess-of-loss treaty or stop-loss cover. A higher attachment point generally results in a lower reinsurance premium, since more risk remains with the cedent.
Practical Relevance
Choosing the attachment point is a central element of a primary insurer’s reinsurance strategy: it significantly influences the balance between retention, premium expense, and the volatility remaining in the insurer’s own portfolio.
Reinsurance Audit
Synonyms: Audit
A reinsurance audit is a reinsurer's review of a primary insurer's or reinsurer's business processes, typically conducted as an underwriting or claims audit.
Concept
A reinsurance audit is a reinsurer’s review of a primary insurer’s or reinsurer’s business processes, aimed at assessing the quality and consistency of its business management.
Variants
An underwriting audit examines whether, and to what extent, the primary insurer’s underwriting guidelines have actually been followed. A claims audit focuses on verifying whether claims covered under the reinsurance treaty have been adequately reserved and properly settled.
Development
Originating in the US market, audits are increasingly conducted even before a new business relationship is established, allowing reinsurers to assess the soundness of a prospective cedent’s business processes before committing capacity.
Development Commission
Synonyms: Aufbauprovision
A development commission is an additional reinsurance commission through which the reinsurer provides the cedent an expense overallowance to help build up its business operations.
Concept
A development commission is an additional type of reinsurance commission through which the reinsurer provides the cedent with an expense overallowance to support the build-up of its business operations.
Use Case
It is used particularly for young or rapidly growing primary insurers, whose above-average initial acquisition and administrative expenses can create significant financing needs. The development commission eases liquidity and earnings pressure by financing part of these costs through reinsurance.
Related Concepts
The development commission is closely related to acquisition cost financing concepts and is often agreed as part of specially structured quota share treaties (so-called “development quotas”).
Cash Deposit (Bardepot)
Synonyms: Bardepot
A cash deposit is collateral placed by a reinsurer with the cedent to secure the cedent's claims under the reinsurance contract.
Concept
A cash deposit is collateral that a reinsurer places with the cedent, or holds in a blocked account for the cedent’s benefit, to secure the cedent’s future claims under the reinsurance contract — in particular claim payments.
Relevance for Unauthorized Reinsurers
Cash deposits are particularly relevant for reinsurers not licensed under the cedent’s supervisory jurisdiction: many regulatory regimes require full collateralization through cash deposits, trust funds, or letters of credit for such reinsurers’ recoverables to be recognized on the balance sheet.
Distinction from Other Forms of Collateral
Compared to letters of credit, a cash deposit provides the cedent with more direct security, less dependent on the creditworthiness of a third-party institution, but at the same time ties up the reinsurer’s liquidity that would otherwise be available for its own investment activities, which is why reinsurers frequently prefer letters of credit or trust funds.
Basis Risk
Synonyms: Basisrisiko
Basis risk is the risk that a hedge — particularly a parametric or index-based instrument — does not precisely match the actual loss suffered.
Concept
Basis risk refers to the risk that the payout from a hedging instrument — particularly from parametric or index-based covers — does not exactly correspond to the actual economic loss suffered by the insured.
Causes
Basis risk typically arises when a hedging instrument is linked to a proxy, such as a wind speed index or a market index, rather than directly measuring the individual loss; the discrepancy between the index and the actual loss constitutes the basis risk.
Relevance for Parametric Insurance
Basis risk is a central design consideration particularly for parametric insurance solutions and catastrophe bonds: a narrow, well-correlated trigger parameter reduces basis risk but often increases modeling complexity and cost, while simpler parameters can increase basis risk for the insured.
Binding Period
Synonyms: Bindungsfrist
The binding period is the time during which an offer or a reinsurer's underwriting commitment remains binding before it lapses without acceptance.
Concept
The binding period is the agreed or statutorily prescribed period during which an offer, an underwriting commitment, or a cover note remains binding before it automatically lapses without timely acceptance.
Relevance in Facultative Reinsurance
In facultative reinsurance, when underwriting an individual risk, reinsurers frequently set a binding period within which the cedent must definitively accept or decline the offered cover; once the period expires, the reinsurer is no longer bound by its offer.
Relevance for Market Practice
The binding period creates planning certainty for both contracting parties, as the reinsurer only needs to reserve its committed capacity for a limited time, while the cedent can obtain comparative offers and make an informed decision within the period.
Bordereau
Synonyms: Reinsurance Bordereau
A bordereau is a periodic statement through which a cedent provides its reinsurer with details of individual ceded risks, premiums, or claims.
Concept
A bordereau is a periodic statement, usually prepared monthly or quarterly, through which a cedent provides its reinsurer with detailed information on individual risks, premiums, or claims ceded under a reinsurance contract.
Types
A distinction is made in particular between the premium bordereau, which lists the premiums ceded during the reporting period on a risk-by-risk basis, and the loss bordereau, which lists claims reported or paid during the reporting period. Bordereaux are especially common in facultative reinsurance and in proportional treaty reinsurance with individual risk reporting.
Relevance for Reinsurance Management
For the reinsurer, bordereaux are the central source of information for ongoing monitoring of the ceded book, reserve estimation, and billing; incomplete or late bordereaux can lead to significant information asymmetries and disputes between cedent and reinsurer.
Burning Cost
Synonyms: Experience Rating
Burning cost is an experience-based reinsurance pricing method that relates the historical loss experience of a portfolio to its premium base.
Concept
Burning cost is an experience-based reinsurance pricing method that relates the historical losses of a ceded portfolio, observed over a multi-year period, to the corresponding premium base, in order to derive a risk-adequate reinsurance premium.
Calculation
The burning cost rate is typically derived as the sum of historical losses falling within the reinsured layer divided by the sum of gross premiums for the observation period, frequently supplemented by a trend adjustment (inflation adjustment) and an appropriate margin for volatility and large losses.
Limitations of the Method
The burning cost method is best suited to portfolios with stable, well-documented loss history and mid-level layers, but is less informative for very high layers with few historical losses (excess-of-loss covers for large losses), where exposure-based models are frequently used as a supplement.
Cash Call
Synonyms: Cash Call
A cash call is a cedent's request to its reinsurer for early payment of an already foreseeable claims share ahead of the regular settlement cycle.
Concept
A cash call is a cedent’s request to its reinsurer for early payment, outside the regular settlement cycle, of an already foreseeable and typically substantial claims share, in order to secure the cedent’s own liquidity following a major loss event.
Use Cases
Cash calls are particularly common after severe natural catastrophes or other major loss events, where the cedent must pay out substantial amounts to its policyholders in the short term while the final loss amount, and hence the regular settlement with the reinsurer, has not yet been conclusively determined.
Contractual Framework
The availability and conditions of a cash call are typically set out in the reinsurance contract itself, for example by defining a minimum loss amount above which a cash call is permissible, as well as deadlines within which the reinsurer must comply with the payment request.
Catastrophe Excess of Loss (Cat XL)
Synonyms: Cat XL
A Cat XL is a non-proportional reinsurance treaty that protects a cedent against the accumulated loss burden from a single natural catastrophe event.
Concept
A Catastrophe Excess of Loss (Cat XL) is a non-proportional reinsurance treaty that protects the cedent against the accumulated loss burden from a large number of individual losses attributable to a single natural catastrophe event (such as a windstorm, earthquake, or flood).
Structure
A Cat XL defines a retention (priority) and a coverage limit (capacity) per loss event; if the cedent’s aggregated loss burden from a single catastrophe event exceeds the retention, the reinsurer covers the excess amount up to the agreed capacity limit. Cat XL programs are frequently structured in multiple successive layers with different reinsurers.
Relevance for the Cedent’s Solvency
For most property insurers, the Cat XL is the most important reinsurance cover for protecting solvency against extreme natural catastrophe events, and is typically sized based on catastrophe model output for the 100- to 250-year return period.
Clash Cover
Synonyms: Clash Cover
A clash cover protects a reinsurer or cedent against the accumulation of losses from multiple lines or policies triggered by the same loss event.
Concept
A clash cover is a reinsurance coverage that protects a cedent or reinsurer against the accumulation of losses arising from multiple, otherwise independent lines, policies, or contracts, but triggered by the same underlying loss event.
Typical Use Case
A classic example is a major loss event that simultaneously triggers claims under the general liability, D&O, and environmental liability policies of several policyholders of a single cedent; without a clash cover, each individual policy would be considered separately, potentially understating the true cumulative effect of the event for the cedent.
Relevance for Accumulation Management
Clash covers are an important tool for accumulation management in liability and reinsurance, since traditional excess-of-loss reinsurance treaties are often structured per contract or per risk and therefore do not automatically capture accumulations across loss events.
Contract Certainty
Synonyms: Contract Certainty
Contract certainty is the principle that all material contract terms should be fully agreed and documented before, or immediately upon, the inception of coverage.
Concept
Contract certainty is the principle that all material terms of an insurance or reinsurance contract should be fully negotiated, agreed, and recorded in a final contract document before, or at the latest immediately upon, the inception of coverage.
Historical Background
The contract certainty initiative was introduced particularly in the London market (Lloyd’s) following regulatory criticism of the widespread practice of granting cover on the basis of preliminary terms (a “slip”) while the final contract documentation was only completed significantly later, which could lead to considerable legal uncertainty at the time of a claim.
Relevance for Market Practice
Contract certainty is intended to ensure that both cedent and reinsurer have clarity on the exact scope of coverage, premium, and all other contract terms already at inception of the risk, thereby reducing disputes over contract interpretation at the time of a claim and improving the efficiency of claims handling.
Bordereau Declaration Process
Synonyms: Deklarationsverfahren
The declaration process is the periodic reporting of individual risks written by the cedent under a proportional reinsurance treaty to the reinsurer.
Concept
The declaration process is the periodic reporting and settlement procedure through which a cedent, under a proportional reinsurance treaty (such as a quota share or surplus treaty), reports to the reinsurer the individual risks written together with the associated premiums and losses.
Process
Declaration is typically made in the form of a bordereau, which for each individual risk written during the declaration period (usually quarterly) contains the relevant details such as policyholder, sum insured, cedent’s retention, ceded share, and premium, enabling the reinsurer to verify the premium and liability allocated to it.
Relevance for Contract Administration
A functioning declaration process is a prerequisite for correctly settling proportional reinsurance treaties and for the reinsurer’s ability to track and appropriately price the portfolio it has assumed; delays or incompleteness in declaration can lead to significant reconciliation problems between cedent and reinsurer.
Drop Down Cover
Synonyms: Drop Down Cover
A drop down cover is a clause under which a higher excess layer drops down into an exhausted or unavailable lower layer to close the resulting coverage gap.
Concept
A drop down cover is a contractual clause in a multi-layer excess-of-loss or liability program under which a higher coverage layer automatically “drops down” into a lower layer and closes its coverage gap if the lower layer originally intended to respond is exhausted, invalid, or otherwise unavailable.
Use Case
A typical example is a multi-layer liability program where the capacity of a middle layer has already been exhausted by a prior loss within the same policy year; a drop-down clause in the layer above can in this case provide that this layer attaches from the original attachment point of the exhausted layer, in order to avoid a coverage gap in the overall program.
Relevance for Program Structure
Drop down cover is an important tool for avoiding coverage gaps in complex, multi-layer insurance and reinsurance programs, but requires precise contractual drafting to avoid ambiguity about the exact trigger mechanism and the scope of the responding coverage.
Exhaustion Clause
Synonyms: Erschöpfungsklausel
The exhaustion clause governs the consequences when the capacity of an insurance or reinsurance layer has been fully used up by losses already incurred.
Concept
An exhaustion clause is a contractual provision that specifies the consequences when the capacity of a given insurance or reinsurance layer has been fully used up (exhausted) by losses already incurred and settled.
Reinstatement of Capacity
Many excess-of-loss treaties provide, for the case of exhaustion of a layer, a so-called reinstatement clause, under which the original capacity is restored for the remainder of the contract period upon payment of an additional premium (reinstatement premium); without such a clause, no coverage remains available for further losses within the contract period once capacity is exhausted.
Relevance for Program Structure
The precise design of the exhaustion clause, particularly the number of permitted reinstatements and the amount of the reinstatement premium, is a central point of negotiation in structuring reinsurance programs, since it significantly affects the extent to which the cedent remains protected after one or more large losses within a period.
Exposure Rating
Synonyms: Exposure Rating
Exposure rating is a method for pricing reinsurance treaties based on portfolio metrics and loss distribution curves rather than actual claims experience.
Concept
Exposure rating is a method for pricing reinsurance treaties, particularly excess-of-loss treaties, that is not primarily based on the cedent’s actual historical claims experience but on portfolio metrics (such as total premium and risk profile) and on industry-wide or market-standard loss distribution curves that represent the expected distribution of loss sizes.
Distinction from Experience Rating
Unlike experience rating, which uses the specific cedent’s past claims experience for pricing, exposure rating uses exposure-based methods, which are particularly advantageous when the cedent’s available claims history is too short, too volatile, or not representative due to a changed business mix.
Application and Limitations
Exposure rating is frequently used for newly structured reinsurance programs, for cedents with limited claims history, or in combination with experience rating as part of a weighted approach; the accuracy of exposure rating depends significantly on the quality and representativeness of the loss distribution curves used for the respective line of business and region.
Facultative Reinsurance
Synonyms: Fac
Facultative reinsurance is the case-by-case reinsurance of a specific individual risk, which the reinsurer may accept or decline after individual assessment.
Where it is used
Facultative reinsurance is used when an individual risk exceeds the capacity of existing treaties, is excluded from the treaty, or has a special risk quality – typically for large industrial accounts, specialty risks or locations heavily exposed to natural hazards.
Process
The cedent offers the individual risk with complete underwriting information; the reinsurer assesses it and freely decides on acceptance, share and terms. Both sides retain full freedom of underwriting.
Advantages and drawbacks
Facultative covers are flexible and risk-adequate, but administratively demanding, and both price and availability depend on market conditions. They complement treaties but do not replace them.
Funds Withheld
Synonyms: Funds Withheld Account
Funds withheld refers to an arrangement under which the cedent retains and manages assets that would otherwise be transferred to the reinsurer.
Concept
Funds withheld refers to an arrangement within a reinsurance contract under which the cedent retains and manages, in its own account, assets that economically belong to the reinsurer and would normally be transferred to it, rather than actually transferring them.
Mechanism
The cedent maintains a separate account (funds withheld account) in which amounts owed to the reinsurer are recorded, credited with interest at a contractually agreed rate; upon commutation or at the end of the contract, the withheld funds are paid out to the reinsurer or netted against its obligations in accordance with the contractual terms.
Advantages for Cedent and Reinsurer
Funds-withheld structures allow the cedent to manage the investment of the relevant funds itself and benefit from their investment return, while simultaneously exposing the reinsurer to the cedent’s credit risk, since, unlike a classic reinsurance trust account, the funds remain with the cedent itself; such structures are frequently used in finite risk and other alternative reinsurance solutions.
Profit Commission (Gewinnbeteiligung)
Synonyms: Gewinnbeteiligung
Profit commission is additional remuneration the reinsurer grants the cedent when a reinsurance treaty's loss experience is favorable.
Concept
Profit commission is additional, results-dependent remuneration that a reinsurer pays to the cedent when the actual loss experience of a reinsurance treaty turns out more favorable than assumed in pricing, allocating a portion of the resulting surplus to the cedent.
Calculation
The amount of profit commission is usually calculated as an agreed percentage of the notional profit from the reinsurance treaty, derived from earned reinsurance premium less paid losses, the reinsurer’s flat administrative expense allowance, and, where applicable, a loss carried forward from prior years; a negative balance (loss) is frequently carried forward into the calculation for future periods.
Relevance for the Contractual Relationship
Profit commission strengthens the alignment of interests between cedent and reinsurer, since the cedent retains a financial interest in careful risk selection and effective claims management even after premium payment; it is particularly common in proportional reinsurance and frequently combined with other results-dependent remuneration elements such as a sliding scale commission.
Sliding Scale Commission (Gleitende Provision)
Synonyms: Gleitende Provision
Sliding scale commission is a remuneration structure in proportional reinsurance where the commission rate moves inversely with the loss ratio within defined limits.
Concept
Sliding scale commission is a remuneration structure in proportional reinsurance under which the commission rate paid by the reinsurer to the cedent moves, within contractually defined limits (minimum and maximum commission), inversely with the treaty’s actual loss ratio.
Mechanism
If the loss ratio is favorable (low), the sliding scale commission rises up to an agreed maximum rate, while it correspondingly falls, in the case of unfavorable (high) loss experience, down to an agreed minimum rate; within this range, the commission adjusts linearly or according to a contractually defined formula in line with the respective loss ratio.
Distinction from Profit Commission
Unlike profit commission, which is granted as an additional payment calculated after the fact alongside the base commission, sliding scale commission entirely replaces the fixed commission with a variable rate directly linked to the loss ratio; both instruments, however, pursue the same goal of more closely aligning the interests of cedent and reinsurer through a results-dependent remuneration component.
Ground-Up Cover
Synonyms: Ground-Up Coverage
Ground-up cover refers to reinsurance coverage that applies from the first dollar of a loss, without the cedent retaining a deductible.
Concept
Ground-up cover refers to reinsurance coverage that applies from the first dollar of a loss, without the cedent bearing its own retention (priority), in contrast to classic excess-of-loss coverage, which only applies above an agreed threshold.
Use Cases
Ground-up cover is typically used when the cedent, for regulatory, strategic, or capacity reasons, does not wish to retain any risk itself, or in the case of particularly specialized, low-volume programs where full risk transfer is more economically sensible than establishing a retention.
Premium Structure
Because the reinsurer assumes the entire loss potential under a ground-up cover, including the more frequent and reasonably predictable smaller losses, the reinsurance premium relative to the ceded sum insured is regularly significantly higher than for an excess-of-loss cover with substantial retention by the cedent.
Hard Market/Soft Market (Hartmarkt/Weichmarkt)
Synonyms: Hartmarkt/Weichmarkt, Underwriting Cycle, Insurance Cycle
Hard market and soft market describe the cyclical phases of the insurance and reinsurance market in which capacity, premium levels, and terms move inversely to supply and demand.
Concept
The insurance and reinsurance market moves through cyclical phases referred to as “hard market” and “soft market.” In a hard market, available underwriting capacity is scarce, premiums rise, terms and conditions become more restrictive, and underwriters can apply stricter selection criteria. In a soft market, by contrast, a capacity surplus exists, leading to falling premiums, more generous terms, and intense competition.
Causes and Dynamics
The cycle is typically driven by major loss events (natural catastrophes, market shocks), changes in available capital (e.g., through investment results or alternative capital market access such as ILS), and the competitive behavior of market participants. Following significant loss events, the market frequently hardens as capacity is depleted through claims payments and reinsurers recalibrate their risk appetite.
Relevance for Underwriting and Capital Allocation
Underwriting strategies, renewal negotiations, and capital allocation by primary insurers and reinsurers are significantly shaped by the prevailing market phase; in soft market phases, alternative sources of return (e.g., diversification, new market segments) are more frequently pursued to achieve return targets despite falling premium rates.
Event Definition Clause (Kumulklausel)
Synonyms: Kumulklausel, Occurrence Clause
The event definition clause specifies in a reinsurance contract how multiple individual losses from the same occurrence are aggregated in time and substance into a single loss event, which forms the basis for the retention and liability limit.
Concept
The event definition clause contractually specifies the temporal and substantive conditions under which multiple individual losses traceable to the same cause are treated, for reinsurance purposes, as a single loss event. This aggregation is decisive for how often the agreed retention and liability layer of an excess-of-loss treaty can be drawn upon.
Typical Structures
Common variants include the hours clause, which defines a fixed time window (e.g., 72 or 168 hours) for windstorm and earthquake losses within which all losses are treated as one event, as well as more general occurrence clauses that focus on a common trigger rather than a fixed time span.
Relevance for the Cedent and Reinsurer
The structuring of the event definition clause has a significant impact on the practical effect of reinsurance coverage: a generous event definition favors the cedent, as more individual losses can be aggregated together, meaning the retention effectively needs to be exceeded only once, while a narrow definition leaves more of the risk with the cedent.
Accumulation Risk (Kumulrisiko)
Synonyms: Kumulrisiko, Accumulation Exposure
Accumulation risk is the danger that a single event simultaneously affects multiple insured risks, thereby causing a total loss that is economically significant for the insurer.
Concept
Accumulation risk describes the possibility that a single loss-causing event (e.g., a natural catastrophe, a major fire, or a systemic cyber event) simultaneously affects multiple risks or policies underwritten by the same insurer, thereby causing a total loss that is disproportionately large relative to the individual risk exposure.
Categories of Accumulation Events
Accumulation risks can be distinguished by their cause: natural accumulations arise from natural catastrophes with wide geographic extent (windstorm, earthquake, flood); technical or man-made accumulations arise, for example, from major loss events affecting closely situated risks or from systemic failures of interconnected infrastructure (e.g., cyber accumulations or pandemic risks).
Relevance for Accumulation Control and Reinsurance
Insurers and reinsurers operate systematic accumulation management to identify geographic and risk-specific concentrations early and to limit them through underwriting limits, geographic diversification, and the use of accumulation clauses as well as catastrophe reinsurance programs.
Net Retention (Nettoretention)
Synonyms: Nettoretention, Net Line
Net retention is the portion of an assumed risk that an insurer or reinsurer actually retains for its own account after taking into account all existing reinsurance protection arrangements.
Concept
Net retention refers to the portion of a risk assumed by an insurer or reinsurer that it actually retains for its own account after deducting all existing reinsurance protection arrangements. It differs from gross underwriting, which describes the originally assumed risk before any reinsurance is applied.
Relevance for Risk Management
Setting an appropriate net retention is a central strategic decision in an insurer’s risk management: an excessively high net retention can significantly strain the company’s solvency and earnings in the event of large losses, while an excessively low net retention cedes a disproportionately large share of premium income to reinsurers and reduces the insurer’s own earnings power.
Interaction of Multiple Reinsurance Layers
Net retention frequently results from the interplay of several reinsurance instruments, such as proportional reinsurance to smooth balance sheet volatility combined with non-proportional cover to protect against large losses and accumulation events; the actual net retention can therefore vary within the overall program depending on the loss size and the line of business affected.
Retrocession (Retrozession)
Synonyms: Retrozession
Retrocession refers to the further transfer of a risk already assumed by a reinsurer to another reinsurer, known as the retrocessionaire.
Concept
Retrocession refers to the transfer of a risk already assumed by a reinsurer to a further reinsurer, known as the retrocessionaire. It operates on the same basic principles as conventional reinsurance between a primary insurer and a reinsurer, only one step further along the risk transfer chain.
Function within the Reinsurance Chain
Reinsurers use retrocession to further diversify their own risk portfolio, which has been accumulated from a large number of primary insurers, to increase their capacity to write additional business, and to protect their own solvency and credit standing; retrocession can be structured either proportionally or non-proportionally, for example in the form of retrocession excess-of-loss treaties.
Relevance for Global Risk Distribution
Because retrocession agreements are frequently concluded between internationally active reinsurers and specialized reinsurance markets, retrocession contributes significantly to the worldwide distribution of large catastrophe risks; at the same time, a multi-tiered retrocession chain can give rise to a so-called spiral risk, in which the same underlying risk appears repeatedly across different portfolios through multiple reinsurance layers.
Reinsurer
Synonyms: Cessionary, Assuming reinsurer
The reinsurer is the company that, for a premium, assumes risks or shares of risk from a primary insurer (the cedent) and provides it with a proportionate indemnity in the event of a loss.
Position in the reinsurance contract
The reinsurer operates solely in the internal relationship with the cedent and generally has no contractual relationship with the original policyholder. In technical terminology the reinsurer is also called the cessionary, because it assumes the risk ceded by the cedent.
Forms of assumption
Under treaty reinsurance, the reinsurer automatically assumes all risks within an agreed portfolio. Under facultative reinsurance, it instead decides case by case on acceptance, share and terms for each individual risk.
Retrocession
If a reinsurer in turn passes on assumed risks to another reinsurer, it becomes a retrocedent itself; its counterparty is then the retrocessionaire. Such chains further diversify large risks and accumulation losses across the global reinsurance market.
Reinsurance Deposit
Synonyms: Rückversicherungsdepot
A reinsurance deposit is a security amount withheld by the cedent or posted by the reinsurer to secure outstanding obligations under a reinsurance treaty.
Concept
A reinsurance deposit is a security amount that secures the obligations under a reinsurance treaty, either withheld by the cedent from the premium otherwise due to the reinsurer or posted by the reinsurer with a third party (such as a bank or trustee).
Purpose of the Deposit Arrangement
The deposit arrangement serves to protect the cedent against the reinsurer’s credit risk, particularly where the reinsurer does not have sufficient creditworthiness or is domiciled in another regulatory jurisdiction where enforceability of payment claims appears less reliable; in the event of a claim, the cedent can draw on the deposit without having to wait for actual payment by the reinsurer.
Accounting Treatment
The reinsurance deposit is typically recognized in the accounts as a liability of the cedent to the reinsurer (where the deposit is withheld) or as a receivable of the cedent from a third-party custodian, and is subject to specific recognition and measurement rules depending on the accounting standard applied.
Reinsurance Broker
Synonyms: Rückversicherungsmakler
A reinsurance broker arranges and structures reinsurance contracts on behalf of a cedent and manages their placement in the market.
Concept
A reinsurance broker is an independent intermediary who, on behalf of a cedent (primary insurer or reinsurer), analyzes the need for reinsurance protection, develops suitable contract structures, and organizes their placement in the domestic and international reinsurance market.
Responsibilities
The responsibilities of a reinsurance broker include preparing risk information (submission), approaching suitable reinsurers, negotiating terms and clauses, coordinating underwriting by multiple reinsurers, and frequently ongoing contract administration, including bordereau and accounting matters.
Remuneration and Conflicts of Interest
Reinsurance brokers are typically remunerated through brokerage commission paid by the placed reinsurer to the broker, which in practice creates potential conflicts of interest and gives rise to transparency requirements regarding disclosure of the remuneration structure to the cedent.
Treaty Reinsurance
Synonyms: Obligatory reinsurance
Treaty reinsurance is a form of reinsurance in which the reinsurer is obliged to automatically accept all risks of a defined portfolio ceded by the cedent.
How it works
Under a treaty, cedent and reinsurer define a portfolio in advance (for example a line of business, a segment or a geographic book). All risks falling within it are automatically reinsured – without individual underwriting. This gives the primary insurer predictable capacity and stable underwriting capabilities.
Proportional and non-proportional
Proportional forms (quota share, surplus) share premium and losses in a fixed ratio. Non-proportional forms (excess of loss, stop loss) respond only above a priority and protect against large and accumulation losses.
Distinction
For individual risks outside the treaty scope or above treaty capacity, facultative reinsurance is used.
Cedent
Synonyms: Ceding company, Ceding insurer
The cedent is the primary insurer that transfers (cedes) all or part of the risks in its portfolio to a reinsurer.
Role in risk transfer
The cedent remains solely liable towards the policyholder; reinsurance operates only in the internal relationship. The policyholder generally has no direct claim against the reinsurer – exceptions are created by cut-through clauses.
Duties
The cedent owes pre-contractual disclosure about the ceded business, ongoing bordereau and accounting duties and – depending on the contract – cooperation duties in claims handling. The underlying principle is utmost good faith.
Retrocession
If a reinsurer passes on assumed risks in turn, it becomes a retrocedent; the assuming reinsurer is the retrocessionaire.
Underwriting Year
Synonyms: Year of account
The underwriting year is the year in which a contract's risk period begins, and it serves as the reference basis for underwriting, reserving and results analysis in primary and reinsurance business.
Role as reference basis
Under reinsurance written on an underwriting-year basis, the reinsurer covers all risks whose inception falls within the relevant year – regardless of when losses later occur or are reported. The underwriting year therefore remains the governing allocation basis for the entire run-off period of a contract.
Distinction from other accounting bases
Alternatives to the underwriting-year basis include the accident-year basis (allocation by date of loss) and the underwriting-year-equivalent fiscal-year basis (allocation by accounting year). The chosen basis materially affects how quickly a reinsurance result is considered closed and how IBNR reserves are built.
Practical relevance
Underwriting-year results are monitored for several years (“run-off”) before being treated as final. Development triangles by underwriting year are a core tool for results and reserve analysis when steering reinsurance programmes.
Cession
Synonyms: Risk transfer (reinsurance)
Cession is the transfer of a risk or a share of risk by the primary insurer (cedent) to a reinsurer (reinsurer/cessionary) in exchange for a reinsurance premium.
Legal nature
Cession operates solely in the internal relationship between cedent and reinsurer; the original policy with the insured is unaffected. Its subject is always a risk already underwritten by the cedent, or a defined share of it – not the original risk itself.
Forms
Cession can be facultative (individual risk) or automatic under a reinsurance treaty. Proportional reinsurance cedes a fixed share of premium and losses, while non-proportional reinsurance instead agrees a priority above which the reinsurer responds.
Retrocession
If a reinsurer in turn passes on assumed risks, this is called retrocession; the ceding reinsurer becomes the retrocedent and the assuming party the retrocessionaire. Such chains of cession further diversify large risks across the global market.
Cession Limit
Synonyms: Line limit
The cession limit is the maximum share of a risk or contract that a reinsurer agrees to accept from a cedent under a reinsurance treaty.
Function
The cession limit caps the maximum share of a risk that a reinsurer assumes under a treaty. It protects the reinsurer from uncontrolled accumulation within an automatically written portfolio and is therefore a core parameter of treaty design.
Structuring by treaty type
Under quota share treaties, the cession limit per risk usually corresponds to the agreed maximum sum insured or, in property insurance, to the probable maximum loss (PML). Under surplus treaties, by contrast, the cession limit is expressed as an integer multiple of the cedent’s retention, representing the number of lines written.
Practical note
Risks whose sum insured or loss potential exceeds the agreed cession limit fall outside the treaty and must be placed facultatively. A reliable assessment of the cession limit therefore depends on robust exposure and PML analysis.
Second-Loss Cover (Excess Cover)
Synonyms: Excess cover, Higher layer cover
Second-loss cover is a higher layer borne exclusively by the reinsurer, which attaches only after the underlying layer carried by the primary insurer (first loss) has been exhausted.
How it works
Under second-loss cover, the primary insurer carries only the first, lower layer of a risk (“first loss”). Once a loss exceeds that layer, a higher layer attaches that is carried exclusively by the reinsurer; the primary insurer bears no liability for that higher layer itself.
Premium allocation
The premium the policyholder pays for the higher layer is passed on by the primary insurer to the reinsurer in full, net of the primary insurer’s distribution expenses. This distinguishes second-loss cover from classic surplus reinsurance, where the primary insurer retains a co-liability share even in the upper layer.
Practical relevance
Second-loss covers are mainly used for large risks whose total sum insured clearly exceeds the primary insurer’s underwriting capacity or cession limit. They allow a clean separation of primary and reinsurance liability along the loss severity scale.