A certificate of insurance for one day event or COI is essentially a document that provides proof that coverages is in force per the parameters on the document.
See our comprehensive 2025 review of all the major U.S. event insurance companies:
What is a Certificate of Insurance For One Day Event?
The COI serves as proof of insurance. It details the types of coverage included in the policy, limits of liability, policy effective dates, and the name of the insured.
Producer
Producer is the insurer or the selling insurance agent/broker.
Insured
Insured is the person or entity that is covered by the insurance policy.
Insurer
Insurer(s) are the insurance companies backing the insurance policy.
Type of Insurance
This describes the types of activities and risks that the insurance policy is designed to cover. This can include:
- General liability
- Property damage
- Medical expenses
- Products and completed operations
- Liquor liability
- Deductibles
- and more!
Certificate Holder
This is where additional insureds are listed. Almost all venues now require that they be listed as an additional insured for event insurance policies, alongside other requirements.
Sample Certificates of Insurance
Many insurers provide sample certificates online. Two examples are below:
https://specialinsurance.com/sample-policy-and-certificates/
https://gatherguard.com/sample-policy-page/
How to Get a Certificate of Insurance For One Day Event
Purchasing event insurance is a straightforward process as many insurers provide online purchase options. Insurers that allow for online purchases include: Markel, GatherGuard, Allstate, SpecialInsurance.com, and State Farm.
Our Top Picks
Be sure to check your venue’s insurance requirements before securing a policy!
GatherGuard
Damage to rented premise limit: $250,000
Medical expense limit: Not included
Waiver of Subrogation Endorsement: No
Primary Noncontributory Endorsement: No
Free quote feature available
SpecialInsurance.com
Damage to rented premise limit: $300,000
Medical expense limit: $5,000
Waiver of Subrogation Endorsement: Yes
Primary Noncontributory Endorsement: Yes
Free quote feature available
Coverage can extend beyond midnight depending on state liquor laws, in which case only 1 day of coverage is required