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💵 '''Self-insured retention (SIR)''' is a contractual mechanism in [[Definition:Commercial insurance | commercial insurance]] policies that requires the [[Definition:Insured | policyholder]] to fund losses — including [[Definition:Defense costs | defense costs]] and [[Definition:Indemnity | indemnity payments]] — from its own resources up to a specified dollar threshold before the [[Definition:Insurance carrier | insurer's]] coverage responds. Most prevalent in [[Definition:Liability insurance | liability lines]] such as [[Definition:General liability insurance | general liability]], [[Definition:Professional liability insurance | professional liability]], [[Definition:Directors and officers liability insurance (D&O) | D&O]], and [[Definition:Cyber insurance | cyber]], the SIR differs from a traditional [[Definition:Deductible | deductible]] in that the insured manages and pays the claim directly during the retention layer rather than having the insurer advance funds and seek reimbursement.

⚙️ Operationally, the SIR creates a clear handoff point. Below the retention, the insured selects counsel, directs the defense strategy, and authorizes settlements, functioning essentially as its own insurer for that first tier of exposure. Once cumulative payments on a given [[Definition:Claim | claim]] reach the SIR amount, the insurance carrier assumes its contractual duties — typically taking over or sharing claim management and paying additional amounts up to the [[Definition:Policy limit | policy limit]]. Some policies apply the SIR on a per-claim basis, while others use an aggregate retention across all claims in a policy period. The interplay between SIRs and [[Definition:Excess insurance | excess layers]] in a multi-layered program demands careful coordination: excess [[Definition:Underwriting | underwriters]] need to confirm that the SIR is sufficient to ensure only genuinely significant claims penetrate into their layer, and they review the insured's financial capacity to actually fund the retention.

🧭 Choosing the right SIR level is a strategic decision that balances [[Definition:Premium | premium]] cost against cash-flow exposure and organizational capability. Large corporations with mature legal and [[Definition:Risk management | risk management]] departments often select higher SIRs because they can manage routine claims efficiently and prefer the premium savings and control that come with retaining more risk. Smaller firms may opt for lower SIRs to access insurer-managed defense resources sooner. [[Definition:Broker | Brokers]] frequently run total-cost-of-risk analyses that compare premium differentials at various SIR levels against expected loss frequencies and severities. For the insurer, an adequately sized SIR reduces [[Definition:Loss ratio (L/R) | loss ratios]] and administrative burden, but it also introduces [[Definition:Credit risk | credit risk]] — if the insured lacks the financial strength to honor its retention obligations, disputes and coverage gaps can arise, particularly in [[Definition:Bankruptcy | insolvency]] scenarios.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Deductible]]
* [[Definition:Self-insured retention]]
* [[Definition:Defense costs]]
* [[Definition:Excess insurance]]
* [[Definition:Total cost of risk]]
* [[Definition:Risk management]]
{{Div col end}}

Definition:Self-insured retention (SIR) - Revision history

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