Severability of Interests Clause
Published: November 6, 2026 · Last reviewed: November 6, 2026 · Est. reading time 5 minutes
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In plain language: A severability of interests clause means a liability policy treats each person or business it covers as if each had its own policy. One insured's bad act does not automatically wipe out coverage for the others. Everyone still shares the same limits.
Technical definition: A severability of interests clause is a liability policy condition stating that, except for the limits of insurance and duties of the first named insured, coverage applies separately to each insured. The ISO CGL places it in Section IV, Conditions.
Severability of Interests Clause at a Glance
The table below summarizes the clause.
| Attribute | Detail |
|---|---|
| Also known as | Separation condition, severability provision |
| Category | Liability policy condition |
| Lines of business | Commercial general liability, homeowners, umbrella policy, automobile liability |
| Industries most affected | Construction, real estate, aviation, hospitality |
| Related forms or endorsements | CG 00 01, Exclusion – Cross Suits Liability CG 40 10 12 19 |
| Common solution | Checking "the insured" versus "any insured" wording |
Key Takeaways
- A severability of interests provision gives each insured separate coverage under one policy with shared limits.
- CSRs need it when one insured sues another or triggers an exclusion.
- The most common misunderstanding is that the clause multiplies limits, which every insured shares.
- Agencies should check whether policy exclusions say "the insured" or "any insured," because that wording decides whether an innocent co-insured stays covered.
What Is Severability of Interests Clause in Insurance?
A severability of interests clause makes the carrier read each exclusion from the sued insured's viewpoint. Without it, one culpable insured could defeat insurance coverage for everyone else on the same insurance contract.
ISO wording applies the policy "as if each Named Insured were the only Named Insured" and separately to each insured "against whom claim is made, or suit is brought." Limits and first-insured duties, such as premium payments and a notice of cancellation, stay shared.
If a store employee attacks a customer, the intentional injury exclusion removes coverage for "the" insured who acted, while the corporation keeps its liability coverage. That choice of "the" over "any" is deliberate policy drafting.
How Does Severability of Interests Clause Work?
- Suit against several insureds. A claimant alleges bodily injury or property damage against more than one insured.
- Separate review. Each defendant is tested against the policy provisions on its own.
- Exclusion wording. Under insurance policy interpretation rules, courts give "the insured" and "any insured" their plain and ordinary meaning, so a specific exclusion aimed at "the insured" reaches only that insured.
- Defense and indemnification. A duty to defend runs to each covered insured unless a declaratory judgment finds no coverage.
Claim Examples Involving Severability of Interests Clause
Severability of interest protects a tenant flight school
A hangar owner adds its tenant as an additional insured. An injured owner employee sues the tenant. The employee exclusion applies to an employee of "the insured," and the worker is not the tenant's employee, so the tenant keeps its defense within the endorsement's scope.
Separation of insureds provision in a negligent supervision claim
In Minkler v. Safeco Insurance Co. of America (2010), a homeowner's adult son was accused of sexual molestation, and his mother was sued for failing to supervise him. Her intentional acts exclusion reached injury intended by "an insured," but the policy said the insurance applies separately to each insured. The California Supreme Court found the exclusion ambiguous as applied to her, citing her reasonable expectations, and read the ambiguity against the insurer under contra proferentem. Her coverage turned on her own acts, not his criminal acts, the excluded conduct.
Severability of Interests Clause vs. Cross Liability Clause: What Is the Difference?
Severability of interests is a standard condition that treats every insured separately. A cross-liability clause, often a policy endorsement, expressly covers one insured suing another. The table compares both.
| Comparison area | Severability of interests | Cross-liability wording |
|---|---|---|
| Primary use case | Applying exclusions to each insured | Confirming suits between insureds |
| Coverage/concept type | Standard policy condition | Endorsement or manuscript wording |
| Common mistakes | Assuming separate limits | Missing a cross-suits exclusion |
What Are the Most Common Mistakes With Severability of Interests Clause?
- Promising separate limits. All insureds share one limit, so promising more creates E&O exposure.
- Ignoring "any insured" language. A household exclusion or other exclusion worded that way may defeat an innocent insured's coverage.
- Missing a cross-suits endorsement. A CG 40 10 12 19 added at renewal can remove coverage when one named insured sues another.
- Assuming the condition on every form. Manuscript forms may alter standardized provisions, so read the policy language.
Sources and References
- IRMI. Severability of Interests Clause.
- IRMI Expert Commentary. The CGL "Separation of Insureds" Condition.
- Risk & Insurance Education Alliance. An Important Condition in the CGL Policy: Separation of Insureds.
- Supreme Court of California. Minkler v. Safeco Insurance Co. of America, 49 Cal. 4th 315 (2010).