In insurance, “aggregate” refers to the maximum total amount your insurer will pay for all covered claims during a single policy period, usually one year. Where a per-occurrence limit caps what gets paid on any single claim, the aggregate caps everything combined. Once you hit that ceiling, additional claims come out of your own pocket, even if each one would have fit under the per-occurrence limit.1The Hartford. Insurance Aggregate Limit
How the Aggregate Limit Works
Take a general liability policy with a $1 million per-occurrence limit and a $2 million general aggregate. Each individual claim can be paid up to $1 million, but total payments across the policy period stop at $2 million. Three covered claims of $800,000 each would produce full payment on the first two and only $400,000 on the third, because that’s all that remains under the aggregate.
The two-tier structure gives both sides predictability. The insurer knows its maximum exposure for the policyholder over the term, and the policyholder knows in advance where the gap between coverage and actual losses could open up. A 2:1 ratio between the aggregate and the per-occurrence limit is common in standard commercial policies, though higher-risk industries like construction and healthcare typically carry larger aggregates priced on their claims history.
The Two Aggregates Inside a General Liability Policy
A standard commercial general liability (CGL) policy actually carries two separate aggregate limits, and they operate on independent tracks. Which one your claim falls under determines whether coverage is still available.
General Aggregate Limit
The general aggregate is the ceiling for the combined total of bodily injury and property damage claims (other than products and completed operations), personal and advertising injury claims, and medical payments. Once the insurer has paid out the full general aggregate through settlements or judgments, its obligation for claims under that category ends for the rest of the policy period.
Products-Completed Operations Aggregate
The second aggregate applies only to bodily injury or property damage arising from your products or completed work. It has its own separate limit. Payments under this aggregate do not reduce the general aggregate, and general aggregate payments do not reduce it. For a manufacturer or contractor, that separation matters: a product liability lawsuit won’t consume the coverage available for something like a customer injury at your office.
Whether Defense Costs Count Against the Aggregate
One of the most consequential details in any liability policy is whether the insurer’s legal defense expenses eat into your aggregate. It catches people off guard, and it can change the real value of your coverage dramatically.
Standard CGL policies for bodily injury and property damage typically provide defense costs outside the limit. Your legal bills are paid separately, and the aggregate stays intact for actual settlements and judgments.
Professional liability policies work differently. Directors and officers (D&O), errors and omissions (E&O), employment practices liability, and cyber liability policies commonly use defense-within-limits provisions, sometimes called “eroding” or “burning” limits. Every dollar spent on attorneys, expert witnesses, and court costs comes directly out of the aggregate. A complex lawsuit that runs up $300,000 in defense costs against a $1 million aggregate leaves only $700,000 to pay any settlement. In litigation-heavy fields, defense spending alone can consume a meaningful share of the aggregate before a single claim is resolved.
If your policy has eroding limits, the aggregate figure printed on your declarations page overstates the money actually available to pay claims. Ask your broker whether defense is inside or outside the limits before assuming the aggregate is enough.
What Happens When the Aggregate Runs Out
Exhausting the aggregate has consequences beyond losing claim payments. The most significant is that the insurer’s duty to defend you ends.
The standard CGL policy language is explicit: the insurer’s right and duty to defend ends when payment of judgments or settlements uses up the applicable limit. Once the aggregate is gone, you are paying claims out of pocket and paying your own legal fees on any new or pending lawsuit. For a business in ongoing litigation, losing the defense obligation can be more financially damaging than losing indemnity coverage, because legal fees in complex cases often exceed the underlying claim amounts.
The insurer’s decision to settle earlier claims must be made in good faith. If a carrier rushes to settle weak claims and burns the aggregate while leaving you exposed on stronger ones, that raises bad faith concerns. Short of that kind of misconduct, once the aggregate is paid out, the contractual obligation is over.
Umbrella and Excess Coverage
This is where an umbrella or excess liability policy becomes useful. An umbrella is designed to drop down and begin paying once the primary policy’s aggregate is exhausted, effectively becoming your primary coverage for the remainder of the term. Before the umbrella insurer’s obligation kicks in, it’s entitled to see documentation of the actual payments that depleted the primary aggregate. A bare assertion that the aggregate is spent won’t trigger the umbrella; the carrier needs proof.
Businesses with real liability exposure should treat umbrella coverage as essential. If your aggregate runs out in month six of a twelve-month policy and nothing stands behind it, you’re self-insured for the rest of the year.
Aggregate Limits in Auto Insurance
Auto liability uses its own version of aggregate limits, though it’s not always called that. A split-limit policy divides bodily injury coverage into two figures: a per-person limit and a per-accident limit. The per-accident number is essentially a mini-aggregate for everyone hurt in a single crash.
A 25/50/25 policy means $25,000 per person for bodily injury, $50,000 total per accident across all injured parties, and $25,000 for property damage. If you cause a wreck that injures three people, each person’s claim caps at $25,000, and total bodily injury payments stop at $50,000. The per-accident figure functions the way a general aggregate does in commercial liability: it’s the ceiling for combined claims from one event. A combined single limit (CSL) policy takes a different approach, lumping all bodily injury and property damage into a single figure per accident and giving you more flexibility in how the money is allocated among claimants.
Annual and Lifetime Aggregates in Health Insurance
Most commercial liability policies use annual aggregate limits, resetting at the start of each policy term. That gives you a fresh cap every year and keeps last year’s claims from permanently reducing coverage.
Lifetime aggregate limits set a single cap over the entire life of the policy. Once you hit it, no further claims are paid. These historically appeared in health insurance, disability policies, and some long-term care plans, and for someone with a chronic condition they could mean losing coverage altogether after a few expensive years.
Federal law has largely eliminated this in health coverage. Group health plans and individual health insurance policies cannot impose lifetime or annual dollar limits on essential health benefits.2eCFR. 45 CFR 147.126 – No Lifetime or Annual Limits Plans can still cap benefits that fall outside the essential health benefits category, but core protections for hospitalization, prescription drugs, mental health services, and similar coverage are unlimited.3GovInfo. 42 USC 300gg-11 – No Lifetime or Annual Limits Grandfathered plans predating the law may have narrow exceptions. Liability and specialty policies outside the health insurance market remain free to use lifetime aggregates.
Policy Language That Changes the Math
The declarations page shows your aggregate as one number, but provisions deeper in the policy form control how that number actually applies.
Sub-Limits
A sub-limit carves out a lower cap for specific claim types within the broader aggregate. A professional liability policy with a $2 million aggregate might impose a $500,000 sub-limit on regulatory investigations. Claims in that category cap at the sub-limit even though the overall aggregate is higher. Sub-limits create a policy within a policy, and they tend to appear for exactly the kinds of claims you’re most likely to face, including cyber incidents, wage-and-hour disputes, and regulatory proceedings.
Reinstatement Provisions
Some policies let the aggregate be restored after a large claim depletes it. Reinstatement can be automatic or optional. Automatic reinstatement resets the aggregate after a loss, though the insurer typically charges an additional prorated premium and retains the right to refuse reinstatement by written notice. Optional reinstatement has to be requested and paid for by the policyholder. Either way, the cost is calculated from the loss amount and the time left in the term. If your policy has no reinstatement provision, once the aggregate is spent, it stays spent until renewal.
Claims-Made vs. Occurrence Trigger
Whether a claim counts against a particular year’s aggregate depends on the policy’s trigger. Occurrence-based policies count claims based on when the incident happened. If someone is injured in 2025 but doesn’t file until 2026, the claim falls under the 2025 aggregate.4The Hartford. Claims-Made vs. Occurrence Policy Claims-made policies count claims based on when they’re reported, so that same 2025 injury reported in 2026 would hit the 2026 aggregate. Claims-made policies also require tail coverage, an extended reporting period endorsement, if you switch carriers or cancel, because otherwise old incidents reported after cancellation have no coverage at all.
Two policies with identical aggregate numbers can offer very different real-world protection depending on how defense costs are treated, what sub-limits apply, whether reinstatement is available, and which trigger governs. The aggregate is the headline figure, but the fine print is what determines what it’s actually worth.