What it means
Large businesses often buy insurance in layers. A primary policy pays the first layer of a loss, up to its limit, and excess or umbrella policies pay further layers above.
Below the primary layer, the business may agree to keep a first part of each loss itself, and that is the retention. The reason is cost.
Insurers charge less when the customer takes the first slice of every claim, since small and frequent claims are expensive to handle. A company with strong cash flow and good risk control may prefer to pay these itself and save on premium.
Retention is related to a deductible but is not the same thing. A deductible is usually taken from the insurer's payment, whereas a self-insured retention must typically be paid by the insured before the insurer has any duty to pay.
The wording also decides whether payments by others can count towards the retention. How the retention fits with the layers above is critical.
The excess insurer will usually attach only when the underlying limits, plus any retention, have been used up by covered loss. If the retention is not properly paid, or if an underlying insurer pays less than its full limit, there can be a gap in cover that the insured must fill.
For finance leaders, the practical steps are to hold enough cash or letters of credit to meet the retention, to track the amounts paid, and to check how they count towards each layer. Reading the policy wording with a broker before a claim saves difficult conversations afterwards.
Some companies reduce the cash strain by using a captive insurer, which is a subsidiary set up to carry part of the risk. Others buy aggregate stop-loss cover, which limits the total retained loss in a year.
These tools let a business keep the savings from a high retention without exposing itself to unlimited small claims.
In practice
Real-world examples.
Example
A construction company chooses a $500,000 retention on its liability insurance. It budgets for small claims within that amount and keeps the premium lower, while the primary and excess policies cover larger events. The risk manager reports the retained losses to the board every quarter.
Example
A hospital group holds a retention of $1,000,000 per claim and sets aside funds in a trust to pay claims. The excess insurer asks for evidence that the retention has been paid before it will respond to a larger claim.
Example
A manufacturer discovers that its excess policy requires underlying limits to be exhausted by payments from the underlying insurers only. The manufacturer's own payments toward a settlement would not count, so it renegotiates the wording. The broker obtains an amendment before renewal.
Formula
Calculation
Excess insurer pays = Smaller of [Loss - (Retention + Underlying limit)] and Excess limit, but never less than zero
A company has a retention of $250,000, a primary policy limit of $1,000,000 and an excess policy limit of $5,000,000. A covered loss of $3,000,000 occurs. The company pays the first $250,000, the primary insurer pays the next $1,000,000, and the excess insurer pays 3,000,000 - (250,000 + 1,000,000) = $1,750,000. The excess limit is $5,000,000, so the full $1,750,000 is paid, and 250,000 + 1,000,000 + 1,750,000 = $3,000,000 matches the loss.Case study
Seen in the real world.
Dunmore Builders is an illustrative, fictional contractor that faced a liability claim from a collapsed scaffold. Its tower had a $250,000 retention, a $1,000,000 primary layer and a $4,000,000 excess layer.
The claim was eventually settled for $2,200,000. The company paid the $250,000 retention, the primary insurer paid its $1,000,000, and the excess insurer paid the remaining $950,000 after checking that the underlying layers had been correctly used.
The illustrative lesson was the value of record keeping. Dunmore's risk manager had kept a log of every payment toward the retention and the primary limit, and this allowed the excess insurer to confirm attachment quickly, with no delay in funding the settlement. The company also reviewed its cash reserves, so that a retention of this size could be paid within days.
Watch out
Common mistakes.
- Treating a retention as the same as a deductible, when the insured may need to pay it before the insurer has any duty to act.
- Assuming that any payment towards a claim counts as satisfying the retention, when the policy may be specific about who can pay.
- Not holding enough cash or collateral for the retention, which can delay the claim.
Questions
People also ask.
What is a self-insured retention?
It is an amount the insured agrees to pay on its own for each claim before insurance starts to respond.
How does the retention affect the premium?
A larger retention usually lowers the premium because the insurer takes less of the smaller claims.
What happens if the underlying insurer is insolvent?
The excess insurer may still attach only above the full underlying limit, so the insured could face a gap unless the wording says otherwise.
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