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🏛️ '''Tiering of own funds''' is the regulatory classification system used to rank the quality and loss-absorbing capacity of capital resources held by [[Definition:Insurance undertaking | insurance undertakings]]. Under the [[Definition:Solvency II | Solvency II]] framework in the European Union, [[Definition:Own funds | own funds]] are divided into three tiers — Tier 1, Tier 2, and Tier 3 — based on criteria such as permanence, subordination, absence of encumbrances, and availability to absorb losses on both a going-concern and gone-concern basis. This tiered hierarchy determines how much of each capital instrument can count toward meeting an insurer's [[Definition:Solvency capital requirement (SCR) | Solvency Capital Requirement]] and [[Definition:Minimum capital requirement (MCR) | Minimum Capital Requirement]], ensuring that the core of an insurer's solvency buffer is composed of the most reliable, highest-quality capital.

⚙️ At the top of the hierarchy, Tier 1 capital — which includes items like paid-in ordinary share capital, retained earnings, and the [[Definition:Reconciliation reserve | reconciliation reserve]] — must constitute at least half of the SCR and at least 80% of the MCR. Tier 1 is further subdivided into "unrestricted" Tier 1 (fully permanent equity instruments) and "restricted" Tier 1 (certain hybrid instruments with loss-absorption features). Tier 2 comprises items of somewhat lower quality, such as [[Definition:Subordinated debt | subordinated liabilities]] with specific maturity and deferral characteristics, as well as [[Definition:Ancillary own funds | ancillary own funds]] that have been approved by the supervisor. Tier 3, the lowest tier, captures instruments like short-dated subordinated debt and certain deferred tax assets, and is subject to tight quantitative limits — no more than 15% of the SCR and zero contribution toward the MCR. Comparable tiering structures exist in other regimes: the NAIC's [[Definition:Risk-based capital (RBC) | risk-based capital]] system in the United States implicitly differentiates capital quality, and China's [[Definition:C-ROSS | C-ROSS]] framework introduced its own core and supplementary capital classification.

💡 The stratification of capital is not merely an accounting exercise — it directly influences how insurers structure their balance sheets, issue debt, and plan [[Definition:Capital management | capital management]] strategies. An insurer approaching its SCR coverage ratio might find that it cannot simply issue any form of debt to restore compliance; the tiering limits may require it to raise equity or restricted Tier 1 instruments instead, which tend to be more expensive. This dynamic has spurred significant activity in the insurance [[Definition:Capital markets | capital markets]], with carriers carefully designing subordinated debt issuances to qualify for the highest possible tier under prevailing regulations. For regulators, tiering ensures that in a severe stress scenario — such as a catastrophic loss event or a sharp decline in [[Definition:Investment portfolio | asset values]] — the capital that remains available to protect [[Definition:Policyholder | policyholders]] is genuinely capable of absorbing losses, not merely nominal or contingent.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Own funds]]
* [[Definition:Solvency capital requirement (SCR)]]
* [[Definition:Minimum capital requirement (MCR)]]
* [[Definition:Subordinated debt]]
* [[Definition:Ancillary own funds]]
* [[Definition:Reconciliation reserve]]
{{Div col end}}

Definition:Tiering of own funds - Revision history

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