Per Occurrence vs Aggregate Limits: Reading Your Liability Policy

Your general liability policy says $1 million on the certificate, but a second number sits right beside it, usually $2 million, and the relationship between them decides how much protection you really have. Understanding per occurrence vs aggregate limits is essential for any contractor or business owner reading a policy, negotiating a contract, or wondering why a client is asking for higher limits.

Per Occurrence vs Aggregate: Definitions

The per-occurrence limit is the most your policy will pay for any single claim or incident. The general aggregate limit is the most it will pay for all claims combined during the policy period, usually one year. A typical small business policy is written at $1 million per occurrence and $2 million aggregate, often shortened to 1M/2M.

How the Two Work Together

Picture the aggregate as a bucket and each occurrence as a scoop. Every covered claim draws from the bucket, with no single scoop exceeding the per-occurrence limit. Three $700,000 claims in one year would each be within the $1 million occurrence limit, but together they total $2.1 million, exceeding a $2 million aggregate, and the last $100,000 would be uncovered.

Why the Aggregate Matters More Than People Think

Businesses rarely plan for multiple claims in one year, yet that is exactly the year that ends companies. A busy contractor running several crews across many job sites has more chances for things to go wrong simultaneously. Defense costs may also erode limits depending on the policy form, and a products-completed operations aggregate may apply separately to claims arising from finished work. Knowing which bucket each claim drains tells you how exposed you are.

Per-Project Aggregates for Contractors

Many construction contracts require the general aggregate to apply per project, so one troubled job cannot drain the limits protecting every other job. This is done by endorsement. If your contracts mention a per-project aggregate, confirm the endorsement is actually on your policy rather than assuming.

How Much Limit Do You Need?

Start with what your contracts demand, since client requirements are non-negotiable floors. Then consider the realistic severity of your work: trades touching structures, water, fire, or vehicles can generate claims that dwarf a $1 million limit. When higher limits are needed, an umbrella or excess policy stacks additional millions above the underlying policy, often at a lower cost per million than the primary layer.

Reading Your Certificate Correctly

On a standard certificate, you will see separate entries for each occurrence, general aggregate, and products-completed operations aggregate, along with personal and advertising injury and medical payments. Clients reviewing your certificate compare those numbers against their contract. Mismatches stall projects, so review limits before bidding, not after winning.

How Umbrella Policies Stack on Top

When contracts or common sense call for more protection than your primary limits provide, umbrella and excess policies supply it efficiently. An umbrella sits above your general liability, auto liability, and often employer’s liability, adding its limit, commonly $1 million to $5 million or more, on top of each. If a claim exhausts the $1 million per-occurrence limit underneath, the umbrella continues paying up to its own limit. Pricing works in your favor: the second million of coverage costs far less than the first, because most claims never reach it, and each additional million typically costs less than the one below. For contractors, umbrellas answer the increasingly common contract requirement for $2 million or $5 million in total limits without rewriting the underlying policies. Two details deserve attention when buying. First, confirm the umbrella follows form over the coverages you care about, meaning it extends the same protections rather than introducing its own narrower terms. Second, watch the underlying limit requirements: umbrellas require you to maintain specified primary limits, and letting a primary policy slip below them creates a gap you pay personally. Reviewed annually alongside your aggregate exhaustion risk, an umbrella is usually the cheapest meaningful protection a growing business can buy.

FAQ: Per Occurrence vs Aggregate

What does 1M/2M mean in insurance?

It is shorthand for $1 million per occurrence and $2 million general aggregate: the maximum for one claim, and the maximum for all claims in the policy year, respectively.

Does the aggregate limit reset?

Yes, the aggregate refills at each policy renewal. It does not refill mid-term, which is why a bad year leaves you thinly protected until renewal.

What is the products-completed operations aggregate?

A separate bucket for claims arising from your finished work or products, distinct from the general aggregate. For contractors, this is often where the serious long-tail claims land.

Can one accident count as multiple occurrences?

Courts have wrestled with that question for decades, and policy wording controls. Most standard forms treat continuous or related exposure to the same conditions as a single occurrence.

Check Your Limits Before a Contract Does

Limits are cheap to fix before a claim and impossible to fix after. My Policy Plug reviews certificates and contracts for Nevada businesses, adds per-project aggregates and umbrellas where needed, and shops the market for competitive terms. Visit mypolicyplug.com or call 702-444-2367.