Although excess liability and umbrella liability coverage both extend liability insurance coverage limits, they’re different commercial lines insurance policies. Here’s what you need to know about these two types of extended coverage and when your small business might need them.
Excess liability insurance and commercial umbrella liability insurance both provide extra layers of financial protection when a claim exceeds your primary policy limits. The main difference is that excess liability only increases the coverage limits of one specific policy, while umbrella insurance extends the limits to multiple underlying policies.
Here's a closer look at how these two extended coverage policies work:
Excess liability insurance provides additional coverage limits to one primary liability policy. This coverage comes in once the policy limits of the underlying policy have been exhausted. Excess liability is often added to policies like:
Umbrella liability insurance sits atop several liability policies at the same time. It will raise the policy limits for whichever underlying liability policy is exhausted by a claim, including:


Excess liability and commercial umbrella coverage work similarly, extending coverage for liability policies when an underlying policy reaches its limit. However, they differ in the number of policies they cover.
Let's say you have a general liability policy with $1 million per-occurrence / $2 million aggregate (also called general aggregate) and a $1 million excess liability policy. If you're found liable for $1.5 million in damages:
Excess liability only applies to one specific underlying policy, so you wouldn't be able to apply the coverage to a claim on a different policy.
A commercial umbrella policy, on the other hand, can be used across multiple underlying liability policies. So, if you have standard policies for general liability, commercial auto, and employer's liability insurance, your umbrella insurance would help pay for a claim that exceeds the coverage limits on any of those policies.
Some excess and umbrella policies have a self-insured retention (SIR), which is an amount you agree to pay out of pocket before the extra coverage comes in (although this can mean lower premiums). Unlike a deductible, which the insurer usually subtracts from the amount paid on a claim, an SIR must be paid before the insurer even gets involved.

Excess liability insurance costs about $50 per month per $1 million of coverage, while commercial umbrella insurance costs roughly $40 per month for every $1 million of additional coverage purchased.
Most small businesses buy an underlying liability insurance policy with $2 million per-occurrence / $4 million aggregate limits and then add umbrella or excess insurance for higher limits.
Insurers will consider several different factors about your business during underwriting to calculate your costs, including liability risks, coverage limits, and your industry.
Extended liability coverage offers many benefits, especially for businesses that:
The right type of extended coverage depends on which underlying policies a business needs to extend. Here are some examples of when a business might need umbrella coverage versus excess liability insurance:
| Excess liability | Umbrella liability | |
|---|---|---|
To extend tech E&O policy limits in case of software errors or data breaches | When they have a team of field technicians who travel to clients’ offices | |
To increase errors and omissions coverage against negligence or misrepresentation claims | When managing multiple properties with a team of agents who use their personal vehicles for work | |
To fulfill terms of a client’s contract that requires higher general liability limits | When there’s a greater risk for jobsite injuries, property damage, and personal injury claims | |
To sign a commercial lease that mandates higher general liability coverage | When they employ a large staff or operate delivery vehicles | |
To meet a commercial client’s service agreement terms for higher general liability limits | When crews drive company vans to jobsites and employees are at more risk of workplace injuries |
Most businesses do not need both excess liability and umbrella liability policies. However, businesses with significant risk exposure in one area and risk across various others may find that one policy isn't enough. This may include:
Insureon's licensed insurance agents can help you secure affordable insurance coverage for all of your small business needs. With just one easy online application, you can compare quotes for extended coverage from our top-rated insurance partners.
Once you find the right policies, you can typically begin coverage and get a certificate of insurance (COI) for your small business in less than 24 hours.
Hear from customers like you who purchased small business insurance.
The average costs on this page were derived from our data on 100,000 small business owners who purchased policies through Insureon. Most of our customers have fewer than five employees, annual revenue ranging from less than $50,000 to more than $200,000, and have been in business for five years or less.

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