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💰 '''Tiering of capital''' is a regulatory classification system that ranks an [[Definition:Insurance carrier | insurer's]] or [[Definition:Reinsurance | reinsurer's]] capital resources into hierarchical quality tiers based on their ability to absorb losses. Borrowed conceptually from banking regulation and adapted for insurance through frameworks like [[Definition:Solvency II | Solvency II]], the approach distinguishes between capital that is permanently available and fully loss-absorbing (Tier 1) and capital of progressively lower quality — such as subordinated debt or instruments with maturity dates — that may only partially count toward regulatory requirements.

⚙️ Under Solvency II, for example, an insurer's own funds are classified into three tiers. Tier 1 capital — ordinary share capital, retained earnings, and certain [[Definition:Surplus | surplus]] reserves — must constitute at least half of the [[Definition:Solvency capital requirement (SCR) | solvency capital requirement]] and at least 80 percent of the [[Definition:Minimum capital requirement (MCR) | minimum capital requirement]]. Tier 2 includes items like subordinated liabilities with defined maturities, while Tier 3 encompasses shorter-dated subordinated debt and other ancillary instruments. Each tier carries eligibility limits that cap how much can count toward meeting the SCR and MCR. The classification process involves the insurer's [[Definition:Chief financial officer (CFO) | finance team]] working closely with [[Definition:Regulatory reporting | regulatory reporting]] functions to catalog every capital instrument and apply the prescribed permanence, subordination, and loss-absorption tests.

🔍 Capital tiering shapes strategic decisions well beyond compliance filings. When an insurer evaluates whether to issue equity, [[Definition:Catastrophe bond | catastrophe bonds]], or subordinated debt, the tier classification of each instrument directly affects how much regulatory credit it yields per dollar raised — making some structures far more capital-efficient than others. [[Definition:Rating agency | Rating agencies]] apply their own capital-quality assessments that parallel but do not perfectly mirror regulatory tiers, meaning an insurer might satisfy supervisory requirements yet still face a downgrade if its capital mix leans too heavily on lower-tier instruments. For [[Definition:Insurtech | insurtechs]] seeking to become licensed carriers, understanding tiering is essential: early capital structures heavily reliant on convertible notes or short-term instruments may provide limited regulatory capital benefit, delaying the point at which the company can write business at meaningful scale.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Solvency II]]
* [[Definition:Solvency capital requirement (SCR)]]
* [[Definition:Minimum capital requirement (MCR)]]
* [[Definition:Own funds]]
* [[Definition:Subordinated debt]]
* [[Definition:Risk-based capital (RBC)]]
{{Div col end}}

Definition:Tiering of capital - Revision history

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