Limit of Liability
A limit of liability is the maximum amount an insurance policy can be called on to pay for a specified coverage, commonly stated per occurrence or claim and as an aggregate for the policy period, subject to the policy's terms, retention and any sublimits.
Last updated October 13, 2026
How a limit of liability works
The limit is the ceiling on what the insurer will pay for a covered loss or claim under a given coverage. It sits above any deductible or retention, which is the amount the insured bears first, and it is separate from the premium, which is the price of the coverage. Once the applicable limit has been paid, the insurer generally has no further obligation under that coverage for that period, and the insured bears any remaining loss unless another policy applies.
Limits can be stated in more than one way, and a single policy often has several:
- Per occurrence or per claim: the most the policy pays for one event or one claim. Occurrence policies use "per occurrence," and claims-made policies usually use "per claim."
- Aggregate limit: the most the policy pays in total for all covered losses during the policy period.
- Sublimits: lower caps for particular types of loss within the overall limit, such as ransomware or regulatory fines.
- Sub-coverage limits: in a typical commercial general liability form, separate limits can apply to items such as medical expense or damage to rented premises, and a separate aggregate may apply to products and completed operations.
Limit vs. deductible vs. retention vs. sublimit
- The limit is the most the insurer pays.
- The deductible or retention is what the insured pays first. A deductible is commonly subtracted from a loss the insurer pays, while a self-insured retention generally must be satisfied before the insurer's obligation begins.
- A sublimit is a smaller limit for a specific cause or coverage inside the larger one.
- An umbrella or excess policy adds limit above an underlying policy and generally responds once the underlying limit is used.
How limits of liability work
Liability limits are usually expressed in one of two ways. A per-occurrence (or per-claim) limit caps what the insurer pays for a single event or claim. An aggregate limit caps total payments over a period, typically the policy year. On a commercial general liability form, the per-occurrence limit applies no matter how many people are hurt or make claims from the same occurrence, and once the applicable aggregate is used up, the insurer has no further obligation for claims that fall under it.
Limits can be structured differently for different coverage parts. A sublimit sets a lower cap for a particular exposure inside the overall limit. Limits sit alongside a deductible or retention, which the insured pays first.
Example
A hypothetical company carries a $1 million per-occurrence and $2 million aggregate liability policy. One incident produces $1.5 million in covered damages. The insurer pays at most $1 million for that occurrence. Later claims in the same year draw down the remaining aggregate, and once $2 million has been paid in total, the aggregate is exhausted.
What to watch for
- Defense costs: on a general liability policy, defense is typically paid in addition to the limit. On some other forms, such as certain professional or management liability policies, defense costs may reduce the limit. Check the wording.
- Shared limits: a single limit may be shared by several insureds under one policy, so one claim can reduce what remains for others.
- Sublimits: a higher headline limit can hide much lower caps for ransomware, regulatory fines or other exposures.
- Contract requirements: customers and investors often specify minimum limits, so confirm your program satisfies them.
- Choosing limits: the right amount depends on exposure, contracts and budget, and a broker can help benchmark, but no limit means every loss will be fully paid.
Defense costs inside or outside the limit
How a policy treats legal defense spending can matter as much as the headline limit. When defense costs are paid in addition to the limit, they do not reduce the amount available for settlements or judgments. When they are inside the limit, often called "eroding" or "wasting" limits, every dollar spent on defense reduces what remains. Many management liability, cyber and professional liability forms use eroding limits, while a standard general liability policy typically pays defense in addition. Check the wording of each policy, and see defense costs for more.
A second example: defense inside the limit
A hypothetical company has a $2 million claims-made professional liability policy with defense costs inside the limit and a retention it has already paid. A customer claim leads to $600,000 in legal fees and a $1.2 million settlement, both covered. Together these use $1.8 million, leaving $200,000 for any other claim under the same policy in that period. If the policy had paid defense in addition to the limit, the same settlement would have left the full limit minus the settlement available. The headline limit looked the same, but the usable limit was different.
Questions to ask your broker or underwriter
- Is this limit per claim, per occurrence, aggregate, or a combination?
- Do defense costs erode the limit, or are they paid on top?
- Which sublimits apply, and do they sit inside or on top of the overall limit?
- Is the limit shared among several insureds or several coverages, such as a combined D&O and E&O limit?
- Does the aggregate reinstate or replenish, and if so, under what conditions?
- What limits do our customer, investor and lender contracts require, and how does our program meet them?
- Do we need excess or umbrella coverage above the primary limit?
Common mistakes
- Comparing quotes on headline limit alone, without looking at sublimits and defense treatment.
- Assuming a $1 million limit means $1 million is available for every claim in the year. The aggregate may cap the total.
- Forgetting that a shared limit can be reduced by claims against other insureds.
- Buying only the minimum a contract asks for when the real exposure is larger.
- Not revisiting limits after the company grows, raises a round or signs larger customers.
Why it matters for technology, AI, fintech and digital-asset companies
A single incident, such as a data breach or a widely deployed software defect, can affect many customers at once, and that can make a per-claim limit and an aggregate limit both relevant. Enterprise customers often set minimum limits in contracts, which makes limits a commercial decision as well as a risk one. Our general liability page covers one common structure.
Limits also shape how enterprise customers and investors view a company. Procurement teams often ask for minimum limits on general liability, cyber and technology E&O before signing, and a lender or investor may look at general aggregate and D&O limits as part of diligence. For AI and software companies, a single defect or breach can lead to many claims at once, so the per-claim limit and the aggregate both need thought. For digital-asset companies, limits for custody or crime losses can be separate from general liability and are often much more restrictive, so review each coverage on its own terms. See cyber and technology E&O and directors and officers liability.
Related terms
Frequently asked questions
What is a limit of liability?
A limit of liability is the maximum amount an insurance policy can be called on to pay for a specified coverage, commonly stated per occurrence or claim and as an aggregate for the policy period, subject to the policy's terms, retention and any sublimits.
What is the difference between a per-occurrence limit and an aggregate limit?
A per-occurrence or per-claim limit caps what the insurer pays for a single event or claim. The aggregate limit caps the total the insurer pays across all covered claims in the policy period, usually a year. Once the aggregate is used up, no further payments are due for claims it applies to.
Do defense costs reduce the limit of liability?
It depends on the policy. Commercial general liability typically pays defense costs in addition to the limit. Some professional, cyber and management liability forms are written so defense costs reduce the limit, sometimes called eroding limits. The policy wording determines which applies.
How do I decide how much limit to buy?
Consider the size of your contracts, customer and investor requirements, the severity of realistic claims, and your budget. Benchmarking against similar companies helps. No limit ensures every loss is fully paid, so limit choice is a trade-off between premium and protection.
What happens when the limit of liability is exhausted?
Once the applicable limit has been paid out, the insurer generally has no further obligation under that coverage for that period. The company then bears any remaining loss itself unless an umbrella, excess policy or other coverage applies. Some policies also end the insurer's duty to defend when the limit is used up, so check the wording.
Is the limit of liability the same as the policy limit?
In everyday use the terms are interchangeable, but a policy can have several limits. The limit of liability is the formal wording that sets the maximum the insurer pays under a coverage. A single policy may include per-claim, aggregate and sublimits, so ask which number is being discussed.
Does the deductible reduce the limit of liability?
Usually the deductible or retention is applied first and the limit applies to the loss above it, but some forms treat the deductible as part of the limit. The result depends on the wording and the type of coverage. Ask your broker how the deductible interacts with the limit on each policy.
Can I increase my limit of liability mid-term?
Sometimes. An insurer may agree to raise a limit by endorsement during the policy period, usually for additional premium and sometimes after reviewing new information. It will not cover a claim or loss it already knows about. Many companies raise limits at renewal instead, or add an excess layer.
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