Claims-Made vs Occurrence Insurance: What Business Owners Should Know
Why policy dates matter when your coverage changes
You switched insurance companies last year. Now a customer brings a claim involving something that happened before the switch. Which policy should you turn to?
Understanding claims-made vs occurrence insurance starts with that question. The answer depends partly on when the injury or damage happened, when the claim was first made against your business, and when you reported it to the insurer.
For a Central Illinois business owner, these details deserve attention before changing coverage, retiring, or closing the doors. Having insurance when you performed the work does not always mean that policy will respond to a later claim.
Claims-made vs occurrence insurance: the basic difference
An occurrence policy generally looks at when the covered injury or damage occurred. If it happened during the policy period, that policy may respond even if the claim arrives after the policy ends. Reporting requirements, exclusions, and available limits still apply.
A claims-made policy generally looks at when a claim is first made against you. It typically must be made during the policy period or an applicable extended reporting period. The underlying act must also fall on or after any retroactive date, which sets the earliest date eligible for coverage.
These terms describe how coverage is triggered. They do not tell you which services, injuries, or damages the policy covers.
Professional liability insurance often uses claims-made coverage. Commercial general liability commonly uses occurrence coverage, although exceptions exist. The Hartford
| What to compare | Occurrence | Claims-made |
|---|
| Key timing question | When did covered injury or damage occur? | When was the claim first made against you? |
| Claim arriving after expiration | The earlier policy may respond | A later policy with suitable prior acts coverage or an applicable tail may respond |
| Earlier work or acts | Work date alone may not establish coverage; injury or damage timing matters | Any retroactive date and prior acts provisions matter |
| Reporting | Follow the policy’s notice requirements | Follow its notice requirements and any specific reporting deadline |
Claims-made and reported adds another requirement
Being told about a claim and reporting it to your insurer are two separate events.
A claims-made-and-reported policy requires the claim to be first made against you and reported to the insurer within the periods the policy specifies. Some policies allow a limited reporting window after expiration; others have different terms.
A claims-made policy without that added reporting trigger still has notice requirements, such as reporting promptly. Neither form means you can wait indefinitely.
Do not assume a renewal or tail automatically fixes a missed reporting deadline. Check what your policy defines as a claim and how to submit notice. irmi.com
Two examples using the same dates
These hypothetical examples illustrate timing only. Assume the type of loss is otherwise covered, sufficient limits remain, and all notice requirements are met.
Example 1: An occurrence policy
A customer is injured at a Springfield shop in June 2026. The shop has an occurrence policy covering that date and changes insurers on January 1, 2027.
The customer first makes a claim in March 2027. The 2026 policy may respond because the injury occurred during that policy period. The insurer change alone does not move the injury into the 2027 policy.
Example 2: A claims-made policy
A local consulting practice makes an alleged professional error in June 2026. It changes insurers on January 1, 2027. Its replacement claims-made-and-reported policy preserves a January 1, 2024 retroactive date.
The client first makes a claim in March 2027, and the practice reports it that month within the required window. Assume there was no earlier claim, prior notice, or known circumstance excluded by the replacement policy.
The 2027 policy may respond because the claim was first made and reported during that period, and the alleged error occurred after the preserved retroactive date.
If the replacement policy instead used January 1, 2027 as its retroactive date, that June 2026 error would fall outside its date requirement.
Three terms to check before making a change
Retroactive date
This is the starting point for eligible earlier acts under many claims-made policies. Keeping insurance continuously does not, by itself, confirm that a replacement policy preserves the same date. Compare the documents rather than assuming the date carries forward. isbamutual.com
Prior acts coverage
Prior acts coverage can allow a current claims-made policy to respond to claims involving work before that policy began. It may use an earlier retroactive date or no retroactive date, subject to other terms.
It does not automatically cover an already-known claim or problem. Review exclusions for prior knowledge, earlier claims, and matters reported to another insurer. irmi.com
Tail coverage
Tail coverage, also called an extended reporting period, allows additional time for qualifying claims involving acts before the policy ended, subject to its terms and any retroactive date. Depending on the wording, it can address claims first made during that additional period.
It does not insure new work or incidents after expiration. Tail availability, purchase deadlines, cost, duration, and limits vary. Some policies include a short extension; longer protection may require purchase.
Prior acts coverage operates through the replacement policy. A tail extends reporting protection under the earlier policy. They are different arrangements, and neither should be assumed. The Hartford
What to check before switching or canceling
Ask your advisor:
- What triggers coverage under this policy?
- What is the retroactive date, and will it stay the same?
- When and how must I report a claim or potential claim?
- Will the replacement policy cover eligible prior work?
- Do I need a tail, and when must I arrange it?
- What changes if I retire, sell, or close the business?
Keep copies of earlier policies and endorsements. A future claim may require reviewing documents from several years ago.
Common questions
Is occurrence insurance always better?
No. The appropriate structure depends on the risk, available policies, and terms. Compare what is covered, exclusions, limits, and continuity requirements alongside price.
Do occurrence policies need tail coverage?
Generally, no. They can respond to later claims involving covered injury or damage during their policy period. But ending coverage can leave later injuries or damage uninsured, even when related work happened earlier. irmi.com
Can a claim arrive after my business closes?
Yes. Closing does not prevent someone from making a claim about earlier work. Review how the policy would handle that claim before canceling. Claims-made coverage may require a tail or another suitable arrangement. americanbar.org
Review the dates with TROXELL
Before switching or ending coverage, ask TROXELL to review your policy dates, reporting requirements, and options for earlier work. Understanding those details now can help you make an informed decision about your business insurance.