Aggregate Limit
An aggregate limit is the most an insurer will pay in total for all covered claims during a policy period, typically one year, no matter how many separate claims arise. It works alongside any per-claim or per-occurrence limit.
Last updated October 13, 2026
How an aggregate limit works
Most liability policies show two numbers: a limit for each claim or occurrence, and an aggregate for the whole policy period. Every covered payment reduces what remains of the aggregate. When payments reach that figure, the policy typically stops responding for the rest of the period, even if a later claim is smaller than the per-claim limit. The aggregate usually renews when the policy renews.
Two features change how far an aggregate goes:
- Defense costs. On many professional, management and cyber forms, legal defense costs erode the limit. On many general liability forms, defense is paid in addition to the limit. It depends on the policy wording, so check it.
- Sub-aggregates. Some policies carry separate aggregates for particular exposures, such as products-completed operations, or per-location aggregates for multi-site businesses.
Example
A company buys a policy with a $1 million per-claim limit and a $2 million aggregate. During the year, two claims each settle for $1 million. The aggregate is now used up. A third covered claim in the same period, even a $100,000 one, would typically not be paid by that policy, and the company would bear it unless it has excess coverage.
Aggregate limit vs. related terms
- Per-claim or per-occurrence limit. This is the most the insurer pays for a single claim or event. The aggregate caps the total across all of them. Both are forms of limit of liability, and the lower of the two figures that applies to a given payment controls.
- General aggregate. On a commercial general liability policy, the general aggregate is the policy-period cap for most coverages, while products-completed operations typically carries its own separate aggregate. The exact structure depends on the form.
- Sublimit. A sublimit caps a particular type of loss, such as regulatory fines or a certain peril. It sits inside the overall limit and does not add to it.
- Retention or deductible. A retention or deductible is what the insured pays before the insurer pays. It is a different mechanism from the aggregate, which limits what the insurer pays overall.
A second example: defense costs that erode the aggregate
A hypothetical company has a $3 million aggregate on a technology E&O policy in which defense costs erode the limit. A customer dispute produces $1.2 million of legal fees and a $1 million settlement, so $2.2 million of the aggregate is used. Later in the same period a second claim arrives. If it generates $500,000 in defense costs, only $300,000 of the aggregate remains to fund any settlement, even though the per-claim limit still reads $3 million. This example ignores the retention to keep the numbers simple.
What to watch for
- Assuming the per-claim limit is always available. The aggregate can cap recovery well below the number of claims times the per-claim limit.
- Related claims. Many policies treat related or interrelated claims as a single claim, which can affect which limit applies. Wording varies.
- Which period applies. On a claims-made policy the aggregate that responds is generally the one in force when the claim is made. On an occurrence policy it is the one in force when the event happens.
- Limits above the primary. Excess or umbrella layers can add capacity, subject to underwriting and their own terms.
Why it matters for technology, AI, fintech and digital-asset companies
Enterprise customer, lender and investor contracts often specify minimum per-claim and aggregate limits. A growing company with many customers can face several claims in one year, so it helps to compare the aggregate to the number of contracts and the size of the exposures, not just the headline per-claim figure.
Questions to ask your broker or underwriter
- Do defense costs reduce the aggregate, or are they paid in addition to it?
- Is there one aggregate for the whole policy, or separate aggregates by coverage part, location or project?
- Do all insureds share a single aggregate, including any additional insureds or the company and its individuals?
- How does the policy treat related or interrelated claims, and could several claims be combined into one?
- Does the policy offer any way to reinstate or add to the aggregate after it is used, and at what cost?
- Do my contracts require a specific aggregate, and does the policy meet it after erosion is considered?
Common mistakes
- Multiplying the per-claim limit by the number of claims. The aggregate stops that calculation.
- Buying the minimum a contract asks for without thinking about erosion. If defense spending reduces the limit, the amount left for settlements may be smaller than expected.
- Not tracking use during the year. A loss run shows paid amounts and reserves, so it is worth reviewing when a large claim is open.
- Forgetting that everyone shares it. Under one policy, the named insured, additional insureds and other covered parties draw on the same aggregate.
- Assuming limits carry over. The aggregate generally resets at renewal, and which policy responds depends on whether it is written on a claims-made or occurrence basis.
How aggregate limits show up for fast-growing companies
Technology and fintech companies often sell to many customers using similar software, so a single defect can lead to several claims in the same period. Policy wording about related claims then decides whether those claims share one limit or each get their own, and wording differs by policy. On a directors and officers policy, one aggregate is typically shared by the individuals and, where the entity is covered, the company, which is why some companies look at Side A, B and C structure when choosing limits. See cyber and tech E&O for how those lines are commonly limited, and review the umbrella and excess layers that sit above the primary limits when a contract asks for more.
See how this applies in practice: insurance requirements in enterprise contracts.
Related terms
Frequently asked questions
What is an aggregate limit?
An aggregate limit is the most an insurer will pay in total for all covered claims during a policy period, typically one year, no matter how many separate claims arise. It works alongside any per-claim or per-occurrence limit. Once payments reach the aggregate, the policy generally pays nothing more until the next policy period begins.
What is the difference between a per-occurrence limit and an aggregate limit?
A per-occurrence (or per-claim) limit is the most the policy pays for a single event or claim. The aggregate is the most it pays for all covered claims combined in the policy period. If your limits are $1 million and $2 million, no single claim exceeds $1 million and total payments stop at $2 million.
Does the aggregate limit reset every year?
Typically the aggregate applies to one policy period, commonly 12 months, and a renewal starts a new period with a new aggregate. It does not usually refill in the middle of a term after being exhausted unless the policy specifically provides for reinstatement, so check the wording.
Do defense costs reduce the aggregate limit?
It depends on the policy. Many general liability policies pay defense costs outside the limits, while many professional, management liability and cyber policies pay them inside the limits, so legal fees reduce what is left for settlements and judgments.
What happens when the aggregate limit is used up?
The policy typically stops paying for further covered claims in that policy period, even if each new claim is below the per-claim limit. The insured then bears those costs unless excess coverage or another policy responds. The aggregate generally renews when the policy renews.
Can I buy more aggregate limit?
Often, yes. Options include a higher primary limit, excess or umbrella layers above it, and on some forms a reinstatement option. Availability and price depend on the insurer's underwriting and the policy wording.
Is the aggregate limit shared by everyone insured under the policy?
Usually. One policy has one aggregate for each applicable coverage part, shared by the named insured and any other insureds, including additional insureds. Payments for any of them reduce the same remaining amount.
How high should an aggregate limit be?
There is no universal figure. Contract requirements, the number and size of customer relationships, the severity of the exposure and whether defense costs erode the limit all matter. A broker can help compare options, but the decision depends on the company's own risk tolerance.
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