Proof, Service & Renewal · May 19, 2026

Certificate of Insurance for Business: Your Guide

Learn what a certificate of insurance shows, verify policy details and additional-insured status, and prepare a complete COI request.

Corentin HugotCo-founder & COO

Certificate of Insurance for Business: Your Guide

A certificate of insurance (COI) is a summary of the business insurance policies listed when the certificate is issued. It usually shows the insured business, coverage types, limits, policy dates, and certificate holder. A COI is not the policy and does not create coverage, change policy terms, or prove that every contract requirement has been met. Compare it with the contract and ask the issuing agent to confirm any required endorsements or additional-insured status.

Two paths: existing coverage or a new policy

If you already have coverage

Request the certificate from the agent or insurer that services the policy. Send the holder's legal name and address, the contract requirements, project details and deadline. Ask whether the current policy supports the request or needs an endorsement. Issuance may take longer if wording, limits or additional-insured status need review.

If you need coverage first

Start with an insurance application and review the available quote and policy terms. A quote is not a bound policy. Complete the insurer's purchase requirements and confirm binding and the effective date before relying on coverage. The issuing agent or insurer can then prepare a certificate describing the policy. A request for proof does not create insurance or guarantee same-day issuance.

A COI shows listed coverage, but the policy controls

An agent, broker or insurer issues a COI. Clients often request it before work or a lease starts.

A COI can help a client, landlord, general contractor, or vendor check:

Which business is insured
Which insurer and policy types are listed
The policy numbers and effective dates
The stated limits of insurance
Who is named as the certificate holder
Whether the certificate includes a description of operations or references requested endorsements

A COI does not replace the insurance policy. It does not expand coverage, add an additional insured, waive subrogation, or guarantee payment of a claim. Those rights depend on the policy wording and any applicable endorsement. If a contract requires specific protection, give the contract to the issuing agent and ask for confirmation in writing.

Check the fields against the contract before you send the COI

Use the contract or lease to identify the requested requirements. Check the certificate against the policy and endorsements.

COI field	What to check
Producer	The agent, broker, or agency contact that issued the certificate. Use contact details you can verify independently.
Named insured	The legal business name and address. It should match the contracting party.
Insurer	The insurance company listed for each coverage line.
Coverage type	The policies the contract requires, such as general liability, workers' compensation, commercial auto, or professional liability.
Policy dates	The effective and expiration dates. Check for gaps during the work, lease, or project period. For a project extending beyond expiration, arrange to verify renewal coverage rather than assuming it will renew.
Limits	The stated limits, such as each occurrence and general aggregate, compared with the contract minimums.
Certificate holder	The exact legal name and address of the party requesting proof.
Description of operations	The project, location, or work description when the contract requires one. A description cannot create coverage that the policy does not provide.
Additional insured	If required, confirm the applicable endorsement or policy provision. A note on the COI alone is not enough.
Waiver of subrogation	If required, confirm that the policy includes the applicable waiver and conditions.

A certificate holder is not automatically an additional insured. If the contract requires additional-insured status, ask the agent for the endorsement or policy provision and check that it applies to the work being performed.

Use this COI verification checklist before accepting or sending it

Before you accept a vendor's COI or send your own, check:

Named insured: Does the legal business name match the party in the contract?
Producer: Was the certificate issued by the listed agent, broker, or insurer? Use independently verified contact details rather than relying only on the certificate or the email that delivered it.
Policy dates: Are the dates current? If the work extends past expiration, who will obtain and verify the renewal certificate?
Coverage types: Is every required policy type listed with its insurer?
Limits: Do the stated limits meet the contract requirements? Check each occurrence, aggregate, and any special limit the contract names.
Certificate holder: Is the requesting party's legal name and address correct?
Operations: Does the description identify the right project, location, vehicle, or service when one is required?
Additional insured: If required, is the status supported by an endorsement or policy provision rather than only a note on the certificate?
Waiver of subrogation: If required, is the waiver included in the policy or endorsement?
Current status: Ask the issuing agent to confirm that the policy has not been canceled, changed, or replaced since the certificate was issued.

If a field is wrong or a required endorsement is missing, do not edit the certificate yourself. Ask the issuing agent for a corrected certificate or the supporting policy document.

Resolve mismatches before relying on the certificate

If the insured name, limits or required status do not match the request, ask the issuing agent to explain the difference and provide the appropriate documents. Do not add wording, check a box or change dates yourself. A client's acceptance of a certificate does not change the underlying coverage.

For a blanket additional-insured endorsement, ask which conditions must be met, such as a qualifying written contract, and whether the protection applies to the work and time period involved. Check ongoing and completed operations separately when the contract calls for both. A checkbox or general reference to an endorsement does not establish that every condition is satisfied.

A COI may not show exclusions, deductibles or how much of an aggregate limit remains after claims. Use the commercial insurance policy-terms guide to prepare those questions, then confirm the relevant terms with the issuing agent.

How to request a COI when a client needs it today

Send the issuing agent:

Your business's legal name and current policy number, if available.
The certificate holder's exact legal name and address.
The contract, lease, or request that lists coverage requirements.
The required policy types and minimum limits.
Any request for additional-insured status, waiver of subrogation, special wording, or a project description.
The delivery email or portal required by the client, landlord, or general contractor.

Ask a licensed agent to check the policy against the request and identify any needed changes.

Share your deadline and ask what review is still needed. Contact Kinro to discuss your insurance requirements. If another agent or insurer services your policy, request the certificate and any policy changes through them. Certificate wording and issuance requirements can vary by state.

Reference and scope

The Texas Department of Insurance COI FAQ explains certificate wording, additional-insured references and cancellation-notice rights under Texas rules. The New York Department of Financial Services also distinguishes a certificate from the policy. State-specific rules should not be assumed to apply nationwide. This guide is educational; coverage and notice rights depend on the applicable policy, endorsements and law.

COI questions small businesses ask

Can I get a COI instantly?

Sometimes an agent or insurer can issue a certificate quickly when the request matches existing policy terms and the required information is complete. Timing can be longer when the request needs an endorsement, a policy change, underwriting review, or clarification from the certificate holder. Give the agent the contract requirements and deadline rather than assuming the certificate can be issued immediately.

Does a COI cost anything?

A certificate is a summary of an insurance policy, and the issuing agent or insurer determines whether a fee applies. A COI does not replace the cost of insurance. If the request requires new coverage, higher limits, or an endorsement, the policy change may affect the premium.

Does a COI change my insurance policy?

No. A COI summarizes selected policy information. It does not change the policy, expand coverage, add an insured party, or modify an exclusion. Any change must be made through the policy or an applicable endorsement.

How long is a COI valid?

A COI does not have a separate coverage period that overrides the policy. Check the policy effective and expiration dates, and ask the issuing agent to confirm that the policy is still active. A certificate can become outdated if the policy is canceled, replaced, or changed after the certificate was issued.

Does a certificate holder receive cancellation notice?

Not automatically in every situation. The certificate and policy documents may refer to cancellation notice provisions, but the certificate holder's rights depend on the policy, endorsements, and applicable requirements. Ask the issuing agent to confirm what notice applies.

Does a COI prove that I am an additional insured?

No. A reference on the certificate is not a substitute for the policy provision or endorsement that grants additional-insured status. Ask the issuing agent for the applicable endorsement and its conditions.