Exclusion

Last updated October 13, 2026

How exclusions work

A policy is usually built in layers. The insuring agreement grants coverage in broad terms, exclusions take certain things back out, and exceptions to exclusions (sometimes called give-backs) can restore coverage for defined circumstances. Exclusions typically appear in the coverage form or in a separate endorsement, and they are unique to each type of policy.

Insurers use exclusions to keep out risks they do not intend to underwrite at the quoted price, to avoid overlap with other policies, or to address risks that are better handled by a specialty product. An endorsement can add, narrow or remove an exclusion.

How to read an exclusion

1. Start with the insuring agreement. Understand what the policy promises before looking at what is taken back out.
2. Read the exclusion closely. Note the trigger words, such as "arising out of," "based upon" or "in connection with," which can make an exclusion broader or narrower.
3. Look for exceptions. The exception may restore coverage in the exact situation you care about.
4. Check the definitions. Defined terms such as insured, claim or professional services shape how the exclusion applies.
5. Review endorsements. An endorsement may add, replace or narrow an exclusion in the main form.
6. Look at the whole program. Another policy may pick up what this one excludes.

Example

Common examples

• Insured versus insured: in D&O policies, removes claims brought by one insured against another, usually with listed exceptions.
• War exclusions: remove losses arising from war or hostile acts, with wording that varies widely by policy.
• Professional services: some liability policies exclude claims from professional advice or services, which are meant to be handled by errors and omissions coverage.
• Prior knowledge: some claims-made policies exclude matters the insured knew about before the policy began.

What to watch for

• Read exclusions and exceptions together. An exception can change the practical effect of an exclusion.
• Wording matters: small differences in phrasing can widen or narrow an exclusion, and courts in different states may read the same words differently.
• Endorsements: exclusions added by endorsement sit outside the main form and are easy to miss at renewal.
• Gaps between policies: an exclusion in one policy is only a problem if another policy does not pick up the exposure. Review the whole program.

Types of exclusions

• Cause-of-loss exclusions remove specific perils, such as flood in a property policy.
• Type-of-loss exclusions remove categories such as fines, penalties or punitive damages.
• Relationship exclusions remove claims between certain parties, such as insured versus insured.
• Activity or property exclusions remove operations or assets the insurer does not intend to cover, such as aircraft or watercraft.
• Timing exclusions remove matters known before inception or acts before a retroactive date. See prior acts coverage.
• Contractual liability exclusions remove liability assumed only through a contract, often with an exception for liability that would exist anyway.

Exclusion vs. related terms

• Exclusion vs. sublimit. An exclusion removes coverage. A sublimit keeps coverage but caps it at a lower amount.
• Exclusion vs. condition. A condition sets duties for the insured, such as giving notice of a claim. A breach of a condition can affect coverage, but it works differently from an exclusion.
• Exclusion vs. deductible or retention. A retention or deductible is the insured's share of a covered loss. An exclusion means the loss is not covered at all.
• Exclusion vs. coverage never granted. A loss can be outside the insuring agreement without any exclusion mentioning it. Both a missing grant and an exclusion can leave a gap.

A second example: a contractual liability exclusion

Questions to ask your broker or underwriter

• Which exclusions are new compared with last year's policy?
• Does each exclusion have exceptions, and do they apply to our operations?
• Is the exclusion absolute, or does it carve out specific situations?
• How does the exclusion interact with our contracts and with our other policies?
• Can the exclusion be narrowed, deleted or limited by endorsement, and at what cost?
• How would the insurer respond if a claim partly falls within an exclusion? See reservation of rights and duty to defend.

Common mistakes

• Reading only the declarations and not the exclusions.
• Missing exclusions that were added by endorsement at renewal.
• Assuming an exclusion is the same across policies or carriers.
• Treating a broad coverage grant as proof that a specific risk is covered.
• Waiting until a claim to learn how a clause is worded. How courts read unclear wording varies by state, so do not rely on a general rule.

Why it matters for technology, AI, fintech and digital-asset companies

Novel exposures are where exclusions cluster. Cyber policies, technology E&O and D&O can each carry exclusions tied to contracts, regulatory matters, intellectual property, crypto assets or automated decisions. A wording review at each renewal helps a company see which risks are actually transferred. See our coverage pages for Errors & Omissions and Directors & Officers.

Some insurers have begun to add exclusions or limitations related to artificial intelligence, and crypto assets, regulatory matters and certain contractual promises are common areas for restrictive wording. Companies that rely on technology E&O should check how the policy defines professional services, because an exclusion can turn on that definition. For more context, see AI liability and digital assets and crypto.

Related terms

Frequently asked questions