Additional Insured vs. Certificate Holder: The Difference

A certificate holder is the company a certificate of insurance was issued to: it gets a record of the vendor’s coverage, but no coverage of its own. An additional insured is added to the vendor’s policy by an endorsement, so that policy can cover it for certain claims. That is the core of additional insured vs certificate holder: one gives you information, the other gives you protection, and only the endorsement makes the protection real.

Your name can appear on a vendor’s certificate in either place, and the two are easy to mix up. This post covers how to tell which one you have and how to ask for the right one.

This article is general information, not legal or insurance advice. Check your contracts and talk to your insurance broker or attorney about your situation.

Additional insured vs certificate holder: the short answer

	Certificate holder	Additional insured
What it means	The person or company the certificate was issued to	A person or company added to the vendor’s policy by endorsement
Coverage under the vendor’s policy	None	Yes, within the terms of the endorsement
Where it shows on an ACORD 25	The certificate holder box at the bottom	The ADDL INSD column (a “Y”), often with a note in the description box
What creates it	The agent fills in your name and address	An endorsement added to the policy by the insurer
How to confirm	Look at the certificate	Read the endorsement itself

If you only remember one thing: a certificate can say you’re an additional insured, but only the endorsement makes it true.

What is a certificate holder?

A certificate holder is the person or company a certificate of insurance is issued to: simply the recipient. When a vendor’s insurance agent issues a certificate, they put your company’s name and address in the certificate holder box so you have a record of the vendor’s coverage. That’s it.

Being the certificate holder gives you information, not protection. If the vendor causes an injury or damages property and someone sues you, the vendor’s policy has no obligation to defend you just because your name is in that box. The ACORD 25 says this itself near the top: the certificate is issued as a matter of information only and confers no rights on the certificate holder.

That doesn’t make the certificate holder line unimportant. Check it every time:

• Your exact legal name, not a nickname or a property name your company doesn’t own.
• A current address, so any notices the policy provides for reach you.
• The right entity, if you have several companies or a separate entity per property or project.

If you’re new to certificates in general, start with what a certificate of insurance is, then come back here. For how this check fits into a full process, see the guide to certificate of insurance tracking.

What is an additional insured?

An additional insured is a person or company the vendor’s insurer has agreed to cover under the vendor’s policy, usually for claims arising out of the vendor’s work for you. It is added by an endorsement: a written change to the policy that the insurer issues.

Say a cleaning company leaves a wet floor unmarked in your lobby, a visitor slips, and the visitor sues both the cleaner and your company. If you’re an additional insured on the cleaner’s general liability policy, and the claim falls within the endorsement’s terms, the cleaner’s insurer may defend you and pay on your behalf. If you’re only the certificate holder, you’re relying on your own policy.

Additional insured coverage is not unlimited. Endorsements vary. Some cover only liability “caused, in whole or in part” by the vendor’s acts. Some cover ongoing operations but not completed work. Some are blanket endorsements that apply to anyone the vendor has agreed in a written contract to add, which means your written contract has to require it.

Where does additional insured status show on an ACORD 25?

On an ACORD 25, additional insured status shows in the ADDL INSD column and often in a note in the description of operations box. The ACORD 25 is the standard certificate of liability insurance form in the US, and three places on it matter here. (For the full walkthrough, see how to read an ACORD 25.)

The ADDL INSD column

In the coverages table, each policy row has a narrow column headed ADDL INSD. A “Y” means the agent is indicating that an additional insured endorsement applies to that policy. A blank or “N” means it doesn’t.

A “Y” is a good sign, but it is the agent’s summary. It doesn’t tell you who the additional insureds are, what the endorsement covers, or whether your company is included.

The description of operations box

Agents often add a sentence in the description of operations box, such as a note that the certificate holder is included as additional insured with respect to general liability, per written contract. This helps, but the form states that it does not amend, extend, or alter the coverage. If the endorsement on the policy doesn’t cover you, the sentence on the certificate won’t change that.

The certificate holder box

Your name here is required either way. Being in this box and being an additional insured are not the same, but you normally want both: the box so the certificate is addressed to you, and the endorsement so the coverage actually applies.

Why does the endorsement itself matter?

The endorsement matters because it is part of the policy, while the certificate is only a snapshot prepared by the vendor’s agent. When there’s a claim, the insurer looks at the policy and its endorsements, not at the certificate.

That’s why most contracts that require additional insured status also ask for a copy of the endorsement. When you get it, read it for:

• Who is covered. Is your company named, or does a blanket endorsement cover anyone the vendor has agreed in writing to add? If blanket, does your contract say so?
• What is covered. Ongoing operations, completed operations, or both. For construction work, completed operations matters a great deal. See subcontractor insurance requirements for more on that.
• Which policies. General liability is the most common. Your contract may also require it on auto or umbrella.
• Form and edition. Many endorsements are on standard ISO forms with a form number and edition date at the bottom. Your broker can tell you if an edition is narrower than your contract expects.

This is a human job. Software can file the endorsement with the vendor’s record, but reading what it actually covers takes a person, and anything unclear should go to your broker.

CertiTrack’s AI reads a certificate’s dates, policy numbers, insurers, and coverage amounts, and you confirm what it read. It does not verify additional insured status, endorsements, or policy wording. Treat that check as yours.

How do you ask for additional insured status?

If your contract requires it, ask for it clearly and early, ideally before the vendor starts work. Your request should include:

1. The exact legal names of every party to be added (your company, and the owner or property entity if the contract requires it).
2. Which policies need the endorsement (for example, general liability and auto).
3. Whether you need ongoing operations, completed operations, or both.
4. Any related endorsements the contract requires, such as waiver of subrogation or primary and non-contributory.
5. A request for a copy of the endorsement pages, not only an updated certificate.

Send the request to the vendor and ask them to forward it to their insurance agent, or ask for the agent’s contact so you can copy them. The agent is the one who actually issues certificates and requests endorsements from the insurer.

Some vendors will need their agent to add the endorsement, which can take time and may carry a cost for them. That’s another reason to put the requirement in the contract and the bid documents, not spring it after award.

A quick review routine

When a vendor’s certificate comes in:

1. Check that your name and address in the certificate holder box are exact.
2. Look at the ADDL INSD column for each policy your contract requires.
3. Read any note in the description box, but don’t rely on it.
4. Open the endorsement pages and confirm who and what is covered.
5. Ask your broker about anything you’re not sure of.
6. File the certificate and the endorsement together, and note the expiration date.

The last step matters more than it looks. Endorsements are tied to a policy term, so when the policy renews you need a new certificate and should confirm the endorsement carried over. CertiTrack tracks the expiration dates and emails the vendor at 90, 60, 30, and 7 days (with a copy to your team), which gives you time to request the renewed certificate and endorsement.

If you’re tracking a small number of vendors, CertiTrack’s Free plan covers up to 5; see pricing.

Frequently asked questions

Can I be both certificate holder and additional insured?

Yes, and that’s usually what you want. The certificate holder box shows the certificate was issued to you, and the endorsement gives you coverage under the vendor’s policy.

Does a “Y” in the ADDL INSD column mean I’m covered?

Not on its own. It shows the agent believes an additional insured endorsement applies to that policy. It doesn’t say who is included or on what terms, so read the endorsement.

Who pays for adding an additional insured?

That depends on the vendor’s insurer. Some policies include blanket additional insured endorsements, and some insurers charge to add one. The vendor or their agent can tell you.

Is “additional insured” the same as “named insured”?

No. The named insured is the vendor who bought the policy and has the main rights and duties under it. An additional insured gets narrower coverage, defined by the endorsement.

CertiTrack keeps every vendor’s insurance, licenses, and renewal reminders in one place. Start free.