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🏛️ '''Capital add-on''' is a supervisory measure under the [[Definition:Solvency II | Solvency II]] regulatory framework that requires an [[Definition:Insurance carrier | insurance or reinsurance undertaking]] to hold additional [[Definition:Regulatory capital | regulatory capital]] above its standard [[Definition:Solvency capital requirement (SCR) | solvency capital requirement (SCR)]]. Regulators impose a capital add-on when they determine that an insurer's risk profile deviates materially from the assumptions embedded in its SCR calculation — whether computed via the [[Definition:Standard formula | standard formula]] or an [[Definition:Internal model | internal model]] — and that the deviation cannot be adequately remedied through other supervisory tools in a timely manner. The concept is specific to the European insurance regulatory landscape, though analogous mechanisms exist in other regimes: the U.S. [[Definition:Risk-based capital (RBC) | risk-based capital]] framework allows state regulators to impose discretionary actions at various intervention levels, and supervisors in jurisdictions following the [[Definition:International Association of Insurance Supervisors (IAIS) | IAIS]] Insurance Core Principles can similarly require firms to hold capital buffers above minimum thresholds.

⚙️ Under Solvency II, a capital add-on is intended as a last-resort tool, applied only after the national supervisory authority — or the relevant body within a group supervision structure — has exhausted other options such as requiring improvements to [[Definition:Governance | governance]], [[Definition:Risk management | risk management]] processes, or model recalibration. The add-on may be triggered by deficiencies in an insurer's internal model that systematically understate risk, by a risk profile that significantly diverges from standard formula assumptions, or by governance weaknesses so severe that they compromise the reliability of the SCR. Once imposed, the add-on is expressed as an absolute amount added to the SCR and is reviewed at least annually to determine whether the conditions justifying it still persist. Insurers subject to a capital add-on must disclose it publicly, which can affect market confidence, [[Definition:Credit rating | credit ratings]], and counterparty perceptions. The European Insurance and Occupational Pensions Authority ([[Definition:European Insurance and Occupational Pensions Authority (EIOPA) | EIOPA]]) monitors the use of capital add-ons across member states to promote supervisory convergence and prevent inconsistent application.

📊 For insurers operating under Solvency II, the prospect of a capital add-on introduces a powerful incentive to maintain robust internal models, transparent risk reporting, and sound governance structures. Because the measure directly increases the capital an insurer must hold — reducing [[Definition:Return on equity | return on equity]] and constraining capacity for [[Definition:Underwriting | underwriting]] or investment — it carries significant strategic and financial consequences. [[Definition:Reinsurance | Reinsurers]] and [[Definition:Insurance-linked securities (ILS) | ILS]] investors also pay attention to capital add-ons when assessing counterparty strength, as they signal supervisory concern about an entity's risk management. From a broader regulatory design perspective, the capital add-on reflects Solvency II's risk-based philosophy: rather than applying uniform capital floors, the framework empowers supervisors to tailor requirements to the specific risk characteristics of each undertaking. This approach contrasts with more prescriptive regimes, and the ongoing Solvency II review process continues to refine the criteria and governance around its application.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Solvency capital requirement (SCR)]]
* [[Definition:Solvency II]]
* [[Definition:Internal model]]
* [[Definition:Risk-based capital (RBC)]]
* [[Definition:Regulatory capital]]
* [[Definition:European Insurance and Occupational Pensions Authority (EIOPA)]]
{{Div col end}}

Definition:Capital add-on - Revision history

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