The short answer to certificate holder vs additional insured: a certificate holder receives proof that a policy exists, while an additional insured has been added to the policy by endorsement and can seek coverage under it. One is paperwork. The other is a change to the coverage itself.
Agency staff see this difference every day. A landlord, a general contractor or a client asks for a COI, and the CSR has to decide whether the request needs only a certificate or an endorsement as well. Getting that answer wrong can leave the requesting party without the protection their contract promised.
What Is a Certificate Holder on a COI?
A certificate holder is the person or organization named in the holder box of a certificate of insurance, usually an ACORD 25 for liability coverage. The certificate is proof of insurance at a point in time. It shows the insured, the insurers, policy numbers, effective dates and limits.
The ACORD 25 states that it is issued as a matter of information only and confers no rights upon the certificate holder. It also states that it does not amend, extend or alter the coverage afforded by the policies listed. Listing a company on the certificate gives that company no coverage.
Certificate holder status also does not guarantee notice if the policy is cancelled. The current ACORD 25 says notice will be delivered in accordance with the policy provisions, so any notice right must come from the policy or an endorsement.
What Is an Additional Insured?
An additional insured is a person or organization that your client adds to its own policy, most often a commercial general liability policy, through an additional insured endorsement. Your client buys the policy and pays the premium. The added party gains coverage rights for claims that arise from your client's work, products or premises, within the terms of the endorsement. Those rights can include the insurer's duty to defend the added party in a covered suit. That defense is often why a contract requires an endorsement instead of a simple certificate.
An additional named insured is a different status. That party is treated much like a named insured, but not the first named insured, and has broader rights and duties under the insurance policy than an additional insured. Do not use the two labels as if they mean the same thing.
Key Differences Between the Two Statuses
| Question | Certificate holder | Additional insured |
|---|---|---|
| What creates the status? | The certificate itself | An endorsement to the policy |
| Is the party covered? | No | Yes, within the endorsement terms |
| Can the party seek coverage for a suit? | No | Yes, for covered claims |
| Is the insurer required to defend? | No | Often, subject to the policy |
| Does it change coverage? | No | Yes |
A certificate holder and additional insured can be the same company on the same COI, but the certificate alone never creates the second status. The ACORD 25 says that if the holder is an additional insured, the policy must have additional insured provisions or be endorsed.
How the Endorsement Shapes Coverage
The added party's rights are only as broad as the endorsement that grants them. ISO forms are common examples. CG 20 10 covers ongoing operations and CG 20 37 covers completed operations. Under a CG 20 26 endorsement, the insurer adds a designated person or organization listed in the schedule.
A blanket additional insured endorsement adds any party your client agreed in a written contract to cover, without listing each one by name. Many contractors carry blanket wording because they sign new construction contracts and service contracts every month.
Under the 2013 ISO editions, this coverage generally applies only to bodily injury or property damage caused in whole or in part by your client's acts or omissions. It also cannot be broader than the contract requires, and the insurer pays no more than the contract requires or the policy limits, whichever is less. Carrier forms may differ, so read the actual endorsement and its edition date.
An Additional Insured Example on a Certificate of Liability Insurance
This hypothetical shows how the difference plays out. A painting contractor signs a contract with a property owner that requires additional insured status under the painter's general liability insurance. The painter's office calls your agency and asks for a certificate.
The CSR checks the policy and finds blanket wording for parties required by written contract. The CSR issues the COI, checks the additional insured box for that line and adds a description that refers to the endorsement.
If the policy had no endorsement, checking that box would not create coverage. The right next step is to ask the carrier for the endorsement before the job starts and confirm any endorsement cost with the client. Use this checklist for each request:
- Read the contractual requirements first, including any wording on primary coverage or waiver of subrogation.
- Confirm that the insurance coverage shown matches the current policy terms, coverage types, coverage limits and insurance limits.
- Ask the carrier for a policy endorsement when the policy does not already grant what the contract asks for.
- Keep a copy of the request, the contract page and the insurance certificate in the client file.
Clients with many vendors and subcontractors often use software for this work. Automated COI tracking can flag compliance gaps, but it cannot fix an endorsement that was never added. COI management still depends on the agency issuing accurate certificates.
Why the Difference Matters for Risk Management
Treating a certificate holder as covered creates coverage gaps that show up only after a loss. If a visitor sues both a contractor and the building's landlord, a landlord that is only a certificate holder has no right to defense costs or legal defense under the contractor's policy. Its own insurance company may then pay, which can affect its insurance premiums later.
For commercial landlords and general contractors, vendor insurance and subcontractor insurance requirements exist to shift that financial exposure. A clear process for each certificate of insurance or COI request is basic risk management for the agency and its business insurance clients. It also supports clean claims handling when a third party tries to file a claim.
Frequently Asked Questions
Is a certificate holder an additional insured?
No. A certificate holder is not an additional insured unless the policy has been endorsed to add that party. The certificate is information only. It gives the holder proof of coverage but no insurance protection, and it cannot change who the insurance policy covers. A party can be both, but only the endorsement creates the coverage.
What can a certificate holder rely on?
A certificate holder can rely on the certificate only as a summary of coverage on the date it was issued. If the holder needs coverage, defense or notice of cancellation, those rights must come from the policy or an endorsement. Ask your insurance provider for copies of any endorsement the contract requires and keep them on file.
Does an additional insured have the same rights as the named insured?
No. An additional insured usually has narrower rights. Coverage applies only as described in the endorsement, often only to liability arising from your client's work or premises. The added party typically cannot change the policy, does not receive premium refunds and may not get notice of cancellation unless an endorsement provides it.
Who pays for additional insured status?
Your client pays, because the endorsement is part of the client's policy. Some carriers include blanket wording in a contractor package at no separate charge. Others charge a flat fee or added premium for each scheduled party. Ask the carrier for the fee before you tell the policy holder what the request will cost.
Can a certificate holder make a claim under the policy?
No. A certificate holder has no right to coverage under your client's policy based on the COI alone. If the holder suffers a loss caused by your client, it can bring liability claims against your client, and your client's insurer then handles them. Insurance verification should confirm the real status before any job begins.