Businesses often need to prove they have insurance before starting a project, signing a contract, or working with a client. A certificate of insurance provides this proof by summarizing important details about an existing insurance policy. Knowing what COI insurance is can help business owners ensure that they’re compatible with customers, landlords, and contractors contracts without delay.
What Is COI Insurance?
COI insurance is a type of insurance that is provided to a business to summarize their insurance coverage. Usually provides information about policyholder, insurance company, policy period, policy coverage and coverage limits.
A certificate of insurance for business enables clients and partners to confirm that a business has the proper insurance. The certificate, however, does not provide coverage, but only acts as a substitute for the policy itself.

What Is a COI in Business?
The typical time COI is requested is when businesses enter into contracts or are using another business’s property. It assists the requesting party to verify if the business is insured for the job.
Common examples include:
- Construction contractors working on construction projects.
- Advisors who offer professional services.
- Vendors who are selling at events.
- Commercial property rental businesses.
The business certificate of insurance simplifies the process of proving proof of insurance.
What Does a Certificate of Liability Insurance Include?
A certificate of liability insurance summarizes liability coverage and its limits. Depending on the policy, this may include general liability, professional liability, or commercial auto coverage.
The document generally includes:
- Business and insurer names.
- Policy numbers and effective dates.
- Types of insurance coverage.
- Coverage limits.
- Certificate holder details.
A certificate does not guarantee that every claim will be covered. The actual policy terms, exclusions, and conditions determine coverage.
Who Needs a Certificate of Insurance?
A certificate of insurance for small business can be useful for companies that work with clients, suppliers, landlords, or other businesses.
Common examples include:
- Contractors: A certificate of insurance for contractors may be required before entering a job site.
- Small businesses: Clients may request small business proof of insurance before signing an agreement.
- Consultants: Professional clients may require evidence of professional liability coverage.
- Event vendors: Organizers may request liability coverage before approving participation.
Requirements depend on the contract, industry, and type of work.
How Much Does a Certificate of Liability Insurance Cost?
The certificate of liability insurance cost is often zero when the document is issued under an existing policy But there is a premium to pay on the insurance itself and some insurance companies or insurance brokers may charge for special administrative services.
The insurance cost is determined by many factors including the business size, type of business, coverage level, claims history and location. It is important for businesses to verify any additional services with their insurance coverage provider prior to asking for them.
How to Get a Certificate of Insurance
Learning how to get a certificate of insurance is straightforward when the required coverage is already in place.
- Talk to your insurance agent and/or insurance provider.
- Describe the person/people who need the certificate and why.
- Fill in the correct information regarding the certificate holder.
- Verify the kind of coverage and policy limits needed.
- Check it for errors before sending.
Certain providers provide liability insurance online and the policyholders can request or download liability insurance certificates online via their online account.

What Is a Certificate of Insurance Form?
A standard form that summarizes insurance information is known as a certificate of insurance form. The ACORD 25 form is a popular insurance certificate used in the United States for liability insurance.
The holder of the certificate is the person or institution to whom proof of coverage is given. A certificate holder does not necessarily make that party an additional insured. This status typically is gained through policy wording or endorsement.
Frequently Asked Questions
What is COI insurance used for?
COI insurance is a type of insurance that gives proof of insurance. It is used by businesses to meet contract obligations, to prove financial fitness and to prove to clients or property owners that certain insurance policies have been obtained.
Is a certificate of insurance the same as an insurance policy?
No. A certificate is a brief summary of certain information related to an insurance policy, and a policy is a document with terms, exclusions, conditions and coverage provisions. This policy will determine if any specific claim will be covered.
Who can request a certificate of insurance?
A certificate can be requested by clients, landlords, general contractors, event organizers and business partners prior to the start of work or when an agreement is finalized. Their needs typically relate to the associated risks.
How quickly can a COI be issued?
Many insurers and brokers will be able to provide a certificate within one business day if the policy is in force and the necessary information is provided. Special endorsement or coverage changes may take longer for requests.
Does a certificate of insurance expire?
The effective and expiration dates of the policies summarized in a certificate are listed. As coverage ends or adjusts, the certificate may no longer reflect the current insurance position, which could require updated documentation.
Can a small business get a COI online?
Yes. Many insurance providers provide policyholders with online portals to view, download or share certificates if they are eligible. Business should ensure that the document contains the information and coverage limits needed by the requesting entity.
Does a COI prove that every claim is covered?
No. A Certificate does not imply coverage of all claims, or coverage of claims that may be excluded by the policy. The insurance company determines payout based on the specific terms of the policy, the conditions and the circumstances of the accident.
What is the difference between a certificate holder and an additional insured?
When a person obtains a certificate they are given the certificate as evidence of coverage. When the policy or a valid policy endorsement gives an additional insured certain protections, an additional insured will receive those protections from another party’s policy.
Do contractors need a certificate of insurance?
Certificates are often required by contractors to certify that they have the necessary liability coverage before they begin work on any project. The general contractors or property owners may impose minimum limits or further insured requirements on the contract.
Can I get a certificate without buying insurance?
A certificate generally cannot provide legitimate proof of coverage unless an applicable insurance policy exists. Rather, a business needs to get the needed policy in the first place and then ask the insurance provider or the insurance broker for a certificate.