Glossary term
Self-Insured Retention (SIR)
A self-insured retention is the amount an insured must pay and often handle before an insurance policy begins responding to a covered claim.
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What Is a Self-Insured Retention?
A self-insured retention, or SIR, is the amount an insured must pay before an insurance policy begins responding to a covered claim. It is common in commercial liability insurance, excess liability, professional liability, and large-account insurance programs.
An SIR can look like a deductible, but it is often more demanding. With a deductible, the insurer may handle the claim from the start and then seek reimbursement for the deductible. With an SIR, the insured may have to pay and manage the retained layer before the insurer's duty to defend or indemnify begins, depending on the policy.
Key Takeaways
- An SIR is a retained loss layer the insured must satisfy before coverage responds.
- It is common in business and liability insurance programs.
- An SIR can shift claims handling, defense costs, and cash-flow responsibility to the insured.
- The policy wording determines whether defense costs erode the SIR and when the insurer's duties begin.
How an SIR Works
If a policy has a $100,000 SIR, the insured may have to pay covered claim costs up to that amount before the insurer pays. Depending on the contract, defense costs may count toward the SIR, sit outside it, or be handled under separate rules. The insured may also have reporting duties even while it is handling the retained layer.
SIRs are often used by businesses that can absorb predictable losses and want lower premiums or more control over claims. They can be risky for businesses without the cash flow, claims expertise, or legal support to manage a large retained layer.
SIR vs. Deductible
Feature | Self-insured retention | Deductible |
|---|---|---|
Who pays first | Insured usually pays retained layer first | Insurer may pay and seek reimbursement |
Claims control | May rest partly with insured until SIR is met | Often rests with insurer from the start |
Defense costs | Depends heavily on policy wording | Depends on policy wording but often insurer-led |
Cash-flow burden | Can be significant | Usually more predictable |
What Businesses Should Check
The key questions are who controls defense, whether legal fees count toward the SIR, when the insurer must be notified, whether multiple claims create multiple retentions, and whether the business has enough liquidity to fund the retained layer. A lower premium is not helpful if the SIR is too large to survive.
The Bottom Line
A self-insured retention is a meaningful retained-risk layer, not just a small policy detail. It can lower premiums and increase control, but it also shifts cash-flow and claims-management responsibility to the insured.