General Liability Coverage Limits: Per-Occurrence vs. Aggregate Explained

Why These Two Numbers Matter More Than Any Other in Your Policy

Most business owners glance at their general liability certificate, see a number with a lot of zeros, and assume they're covered. What they usually don't read closely enough are the two distinct limit lines — and the difference between them can cost you your business if a serious claim hits.

Per-occurrence and aggregate limits are not the same number applied twice. They're two separate ceiling mechanisms that work in tandem. One governs a single event. The other governs your entire policy year. Understanding how they interact isn't just an academic exercise — it directly determines how much financial protection you actually have when something goes wrong.

This matters because general liability claims don't always come one at a time. A slip-and-fall at your office, a product defect lawsuit, a subcontractor's damage claim — any of these can hit in the same year. When they do, your aggregate starts shrinking fast. And once it's gone, you're uninsured for the rest of the year, even though you paid for a full 12-month policy.

For a broader foundation on how policy limits and exclusions operate across insurance types, see our policy limits and exclusions hub.

The Per-Occurrence Limit: What It Covers in a Single Incident

The per-occurrence limit is the maximum your insurer will pay out for any one covered event, regardless of how many people are injured or how much property is damaged in that event. Think of it as the single-incident ceiling.

Say your policy has a $1 million per-occurrence limit. A customer slips on a wet floor in your store, breaks a hip, and sues. If the settlement — including legal defense costs in some policy structures — comes to $800,000, your insurer pays. If that same incident spirals into $1.4 million in total damages between the plaintiff's medical bills and your legal fees, you're covering $400,000 yourself.

One thing many business owners miss: defense costs. Some policies pay defense costs in addition to the per-occurrence limit (called defense costs outside limits), while others deduct them from the limit (defense inside limits). This distinction is buried in the policy language and can dramatically reduce how much is actually available to pay a judgment. Always ask your broker which structure your policy uses.

The per-occurrence limit also defines your exposure when a single event produces multiple claimants. If a fire you accidentally caused damages a neighboring business and injures two of their employees, all of those damages are grouped under one occurrence — all subject to that single per-occurrence cap.

For a deeper look at how 'occurrence' is defined as a policy trigger, see what occurrence and claims-made mean for your liability coverage.

The Aggregate Limit: Your Total Exposure for the Full Policy Year

The aggregate limit is the total your insurer will pay across all covered claims during the policy period — usually 12 months. Once that pool of money is exhausted, your coverage is effectively gone for the rest of the year, regardless of how many months remain on the policy.

Here's where businesses get hurt. Imagine you carry a $1M/$2M policy — $1 million per occurrence, $2 million aggregate. Early in the year, you have two claims: a $600,000 settlement from a contractor injury, and a $900,000 settlement from a product liability suit. You've now paid out $1.5 million against your aggregate. You have $500,000 left — and you still have six months in the policy year.

A third claim hits for $700,000. Your insurer pays $500,000. The remaining $200,000? That's yours to cover.

This is the scenario that keeps underwriters up at night — not because it's rare, but because most business owners never think it can happen to them until it does.

The Products-Completed Operations Aggregate: A Separate Pool

Many CGL policies include a second, distinct aggregate specifically for products and completed operations claims. If you manufacture goods or perform contracted work, claims arising from those activities typically draw from this separate pool — which means they don't eat into your general aggregate.

This is a meaningful protection for contractors, manufacturers, and anyone whose liability exposure extends beyond their physical premises. But it's only valuable if you understand it exists and confirm your policy has it structured this way. Liability limits, sublimits, and aggregates explained in plain terms breaks down how these numbers interact in detail.

How Per-Occurrence and Aggregate Limits Work Together

The relationship between these two limits is straightforward once you see it visually. Think of the aggregate as a bucket. Each claim pours out of that bucket, but no single pour can exceed the per-occurrence limit. The bucket empties claim by claim until it hits zero.

In this table, the per-occurrence limit is never breached — each claim came in under $1M. But the aggregate still ran out by Claim 3. The insurer covered $700,000 of a $1.1M claim, and the business owner absorbed $400,000. After that, the policy is exhausted for the year.

This is why per-occurrence vs. aggregate limits can cost businesses thousands — the math isn't complicated, but the consequences are severe when you're not tracking both numbers.

Setting Your Limits: What's Enough and What's Dangerously Low

The insurance industry defaults to $1M/$2M for small businesses, and most brokers will write that as a starting point. But 'standard' doesn't mean 'sufficient.' The right limits depend on your actual risk profile, not on what's cheapest or most common.

Factors That Should Drive Your Limit Decision

• Industry risk: Construction, manufacturing, healthcare, and food service carry higher inherent liability exposure than most professional services.
• Contractual requirements: Many clients and landlords specify minimum limits — often $1M per occurrence and $2M aggregate — before you can do business with them. Some require higher.
• Business size and revenue: A company with $10M in annual revenue has different asset exposure than one with $500K. Your limits should scale accordingly.
• Claims history: If you've had multiple claims, your aggregate could erode faster than you expect in a given year.
• Number of locations or job sites: More locations mean more exposure points. Consider that each location creates independent potential for incidents.

If standard limits feel insufficient — and they often do for mid-market businesses — the answer isn't always buying a higher-limit primary policy. Umbrella and excess liability policies layer on top of your underlying CGL, extending your effective coverage at a relatively low incremental cost.

If you're packaging your liability coverage inside a business owner's policy, understanding how limits are structured there matters too. See BOP coverage limits: what they mean and how to set yours correctly.

“The businesses that get hurt aren't the ones facing catastrophic single events — they're the ones who had three routine claims in a year and ran out of aggregate by September. They thought they were covered all year. They weren't.”

— Marcus Delgado, Former commercial lines underwriter, 15+ years in property and liability coverage

Reading Your Declaration Page: Where to Find These Numbers

Your declarations page (the 'dec page') is the summary sheet at the front of your policy. It lists your named insured, policy period, premium, and — critically — your coverage limits. Here's what to look for:

Each Occurrence

This is your per-occurrence limit. It will appear as a dollar figure, often $500,000, $1,000,000, or higher.

General Aggregate

The total annual cap across most claim types. Typically twice the per-occurrence limit in standard policies.

Products-Completed Operations Aggregate

A separate aggregate for product liability and completed work claims. May match the general aggregate.

Personal and Advertising Injury

Covers things like defamation, copyright infringement, and false arrest — often set equal to the per-occurrence limit.

Damage to Rented Premises

A sublimit for fire damage to premises you lease. Commonly $100,000 — much lower than your main limits.

Medical Expense

Pays minor medical costs without a lawsuit, usually capped at $5,000–$10,000. Doesn't require proof of negligence.

The most important step after reviewing these numbers is understanding which claims draw from which pool. A products claim hitting your general aggregate instead of your products aggregate could leave your premises coverage exposed. When in doubt, ask your broker to walk through a hypothetical claim scenario for each coverage part.

When Standard Limits Aren't Enough: Umbrella and Excess Coverage

An umbrella policy sits above your general liability (and often other underlying policies) and provides additional limits when your primary coverage runs out. If your CGL has a $1M per-occurrence limit and an umbrella adds $5M more, a $4M judgment gets paid: $1M from your CGL, $3M from the umbrella.

Excess liability is similar but more restrictive — it only extends the specific underlying policy it's written over, without the broader coverage grants an umbrella may provide.

The cost-to-limit ratio of umbrella coverage is often better than buying higher primary limits. A $5M umbrella for a small business might cost $800–$1,500 per year. Increasing your primary CGL from $1M to $2M per occurrence might cost more while giving you less additional protection against catastrophic losses.

One important caveat: umbrella policies have their own per-occurrence and aggregate limits. They're not unlimited. And they won't cover claims that the underlying CGL excludes — coverage gaps in your primary policy don't disappear because you added an umbrella. The umbrella follows the form of the underlying policy for most exclusions.

The bottom line: if your business has meaningful assets, revenue above $1M, or works in a high-risk industry, a $1M/$2M primary CGL alone is probably not enough. The math is simple — one serious claim can exceed your per-occurrence limit, and two or three mid-sized claims can drain your aggregate before the year is out. Plan accordingly.