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📐 '''Standard model''' in insurance refers to a regulatory-prescribed quantitative framework that [[Definition:Insurance carrier | insurers]] and [[Definition:Reinsurer | reinsurers]] use to calculate their required [[Definition:Regulatory capital | regulatory capital]] without developing a bespoke [[Definition:Internal model | internal model]]. The most prominent example is the standard formula under [[Definition:Solvency II | Solvency II]] in the European Economic Area, which specifies a modular, factor-based approach to computing the [[Definition:Solvency capital requirement (SCR) | Solvency Capital Requirement (SCR)]]. Comparable constructs exist in other regimes: the [[Definition:National Association of Insurance Commissioners (NAIC) | NAIC]]'s [[Definition:Risk-based capital (RBC) | risk-based capital]] formula in the United States, the [[Definition:Swiss Solvency Test (SST) | Swiss Solvency Test (SST)]], China's [[Definition:C-ROSS | C-ROSS]] framework, and the evolving [[Definition:Insurance Capital Standard (ICS) | Insurance Capital Standard]] being developed by the [[Definition:International Association of Insurance Supervisors (IAIS) | IAIS]] all incorporate standard-model components.

🔧 Under a standard model, capital charges are derived from predefined stress factors and correlation matrices applied to an insurer's exposures across risk categories — typically [[Definition:Underwriting risk | underwriting risk]], [[Definition:Market risk | market risk]], [[Definition:Credit risk | credit risk]], and [[Definition:Operational risk | operational risk]]. In the Solvency II standard formula, for example, each risk module produces a capital charge that is then aggregated using a prescribed correlation matrix to arrive at the overall SCR. The model's parameters are calibrated by the regulator — the [[Definition:European Insurance and Occupational Pensions Authority (EIOPA) | European Insurance and Occupational Pensions Authority (EIOPA)]] in the case of Solvency II — and apply uniformly to all entities using the formula. This uniformity facilitates supervisory comparability and reduces the cost and complexity of compliance, particularly for smaller or less complex firms that lack the resources to build and validate a full internal model. However, the trade-off is precision: because standard models use generalized assumptions, they may overstate capital requirements for well-diversified portfolios or understate them for firms with unusual risk concentrations.

🎯 The choice between a standard model and an [[Definition:Internal model | internal model]] is one of the most consequential strategic decisions an insurer faces under modern [[Definition:Solvency regulation | solvency regimes]]. Adopting the standard model avoids the substantial investment in actuarial infrastructure, [[Definition:Model validation | model validation]], and ongoing regulatory approval processes that internal models demand — but it can result in capital charges that do not accurately reflect the firm's true risk profile. Large, sophisticated insurers and reinsurers — particularly those operating across multiple geographies or writing complex [[Definition:Specialty insurance | specialty]] and [[Definition:Catastrophe risk | catastrophe]] lines — frequently find that internal models produce more risk-sensitive and often lower capital requirements. Regulators themselves use the standard model as a benchmark, even for firms on internal models, to identify outliers and ensure that approved internal approaches do not systematically underestimate required capital. As regulatory frameworks converge internationally through initiatives like the [[Definition:Insurance Capital Standard (ICS) | ICS]], the design and calibration of standard models will continue to shape competitive dynamics across global insurance markets.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Internal model]]
* [[Definition:Solvency capital requirement (SCR)]]
* [[Definition:Solvency II]]
* [[Definition:Risk-based capital (RBC)]]
* [[Definition:C-ROSS]]
* [[Definition:Insurance Capital Standard (ICS)]]
{{Div col end}}

Definition:Standard model - Revision history

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