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🏛️ '''Minimum Capital Requirement (MCR)''' is the floor level of [[Definition:Regulatory capital | regulatory capital]] below which an [[Definition:Insurance carrier | insurance company]] faces the most severe supervisory intervention, up to and including the withdrawal of its license to write business. Within the [[Definition:Solvency II | Solvency II]] framework that governs insurers across the European Economic Area, the MCR represents an absolute minimum threshold, deliberately set lower than the [[Definition:Solvency capital requirement (SCR) | Solvency Capital Requirement (SCR)]], and its breach triggers what regulators consider a last-resort escalation. The concept reflects a layered supervisory philosophy: while the SCR signals the point at which an insurer should take corrective action, the MCR marks the boundary at which policyholders are deemed to be in immediate danger.

⚙️ Under Solvency II, the MCR is calculated using a simplified formula based on net [[Definition:Technical provisions | technical provisions]], net [[Definition:Written premium | written premiums]], and other volume measures, subject to a corridor that constrains the result to between 25% and 45% of the firm's SCR. An absolute floor — set in euros and periodically updated — ensures that even the smallest insurers maintain a baseline cushion. When eligible [[Definition:Own funds | own funds]] fall below the MCR, the [[Definition:National competent authority | national competent authority]] must act within a defined timeframe: the insurer submits a short-term finance scheme, and if capital is not restored promptly, the regulator can prohibit the firm from entering into new contracts or ultimately revoke authorization. Other regulatory regimes employ analogous concepts: the [[Definition:National Association of Insurance Commissioners (NAIC) | NAIC]]'s [[Definition:Risk-based capital (RBC) | Risk-Based Capital]] framework in the United States defines company-action and authorized-control-level thresholds, while China's [[Definition:C-ROSS | C-ROSS]] system and Japan's solvency margin framework each establish their own minimum floors, though calibration methods and intervention triggers differ.

💡 The distinction between the MCR and higher capital thresholds matters enormously in practice. Breaching the SCR is serious but allows time for recovery plans, capital raises, or portfolio de-risking; breaching the MCR signals that the insurer's capacity to meet obligations is fundamentally compromised. For boards and [[Definition:Chief risk officer (CRO) | chief risk officers]], managing the buffer above the MCR is therefore an existential governance responsibility. Rating agencies and [[Definition:Reinsurance | reinsurers]] also monitor proximity to the MCR as an early-warning indicator, and a narrow margin can trigger collateral calls, downgrade reviews, or withdrawal of [[Definition:Reinsurance treaty | treaty capacity]]. In this way, the MCR functions not only as a regulatory backstop but as a market-discipline mechanism that influences counterparty behavior well before the formal threshold is tested.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Solvency Capital Requirement (SCR)]]
* [[Definition:Solvency II]]
* [[Definition:Risk-based capital (RBC)]]
* [[Definition:Own funds]]
* [[Definition:C-ROSS]]
* [[Definition:Regulatory capital]]
{{Div col end}}

Definition:Minimum Capital Requirement (MCR) - Revision history

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