Liability · Insurance Term
Underlying Insurance (Schedule of Underlying)
Definition
Underlying insurance is the primary liability coverage that an umbrella or excess policy sits on top of, such as general liability, auto liability and employer's liability. The umbrella lists these policies on a schedule and usually requires you to keep them in force at stated minimum limits.
In Plain English
An umbrella insurance or excess liability insurance policy pays only after the underlying policy's limits are used up. The schedule of underlying insurance names each policy, its insurer and its limits.
If an underlying policy is canceled, lapses or carries lower limits than required, many umbrellas treat the missing coverage as if it were in place. That means you may pay the gap yourself.
Exclusions on the underlying policy can carry up if the umbrella is Follow Form. Reviewing both together helps spot gaps.
Not sure how your policy handles this? Have us review it, or get a quote.
Example
Hypothetical: an umbrella requires $1 million of auto liability underneath. The owner's auto policy only has $500,000. After a $1.5 million claim, the owner may have to pay the missing $500,000 before the umbrella responds.
What to Watch For
- Compare each underlying limit with the umbrella's schedule at every renewal.
- Keep underlying policies on the same renewal dates when possible.
- Tell your agent before changing or canceling any underlying policy.
Last updated October 14, 2026 · Primesure editorial team · How We Write