Boring Insurance Agency

What is the difference between a self-insured retention and a deductible?

Who pays first, and who runs the claim. With a DEDUCTIBLE the insurer handles the claim from day one, pays the whole loss including defense, and bills you back for the deductible. With a SELF-INSURED RETENTION you pay first — the insurer’s obligation does not begin until you have spent the retention, and until then the defense is generally yours to arrange and fund. The dollar figure can be identical and the cash-flow and control consequences are completely different, which is why a $50,000 SIR is a bigger commitment than a $50,000 deductible.

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The detail

  • Under a self-insured retention the insured is typically responsible for defense costs within the retention, whereas under a deductible the insurer usually defends from the outset and seeks reimbursement.

    International Risk Management Institute

What this means for you

  • Ask whether defense erodes the retention, and who appoints counsel. On an SIR that is your money and frequently your choice, and it is where the surprise lives.
  • Check whether the retention is per claim or per occurrence. Several claims from one event can mean several retentions, or one, depending on wording.
  • An SIR needs cash available, not just budgeted. You are funding claims before the insurer is on risk, and a run of them lands at once.
  • Confirm reporting obligations. Most SIR policies require notice of a claim even while it sits inside the retention, and failing to report is how cover gets lost on a claim you were paying for anyway.

Related questions

Which one is better for a small business?
A deductible, almost always. An SIR suits organizations with the cash, the claims-handling capability and a reason to want control — larger habitational schedules, staffing firms, franchisors. For a small business the administrative burden and the cash-flow exposure outweigh the premium saving, and the moment a claim needs defending the difference stops being theoretical. If a quote comes back with an SIR where you expected a deductible, that is worth a conversation rather than a signature.
Does a retention affect my limit?
Usually the limit sits above the retention, so a $1M limit with a $25,000 SIR gives you $1M after you have spent $25,000 — but not always, and it is worth reading. Some forms treat the retention as part of the limit, which reduces what you actually have. The same question applies to defense: whether costs erode the limit or sit outside it changes the value of the policy materially, on any form.
Why did my quote come with an SIR?
Usually because the underwriter wants you sharing the frequency. A retention is a common response to a loss history with lots of small claims, to a class where attritional claims are expected, or to a surplus lines placement where the carrier is pricing an unfamiliar risk. It is often negotiable — a higher premium with a lower retention is worth pricing if the cash flow matters more than the saving.
Why surplus lines terms differ

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Written by the licensed brokers at Boring Insurance. Last updated 2026-08-22. See all guides.

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