Certificate Holder vs. Additional Insured: The Difference
The CertifiKit team
Certificate-of-insurance desk
A certificate holder is simply the party that receives a copy of the certificate of insurance. An additional insured is a party that is actually covered under the policy. They sit in different boxes on the ACORD 25 form, they carry completely different rights, and confusing the two is the single most expensive misunderstanding in vendor insurance.
What is a certificate holder?
The certificate holder is whoever the certificate is addressed to — the box in the bottom-left of the ACORD 25 form. Being listed there means one thing and one thing only: the insurer (or more often, the agent) will send you a copy of the certificate, and in practice may notify you if the policy cancels.
It does not mean you are insured. The certificate itself spells this out in the fine print: "This certificate is issued as a matter of information only and confers no rights upon the certificate holder." You are on the mailing list. That is the entire benefit.
What is an additional insured?
An additional insured is a person or organization added to the policy itself, by endorsement, so that the policy's coverage extends to them. If your vendor's work injures someone or damages property, and you get named in the lawsuit, additional insured status is what lets you tender that claim to their insurer and have their policy defend and pay.
This is created by an additional insured endorsement — typically CG 20 10 for ongoing operations and CG 20 37 for completed operations — not by being typed into the certificate holder box.
Side by side
| Certificate holder | Additional insured | |
|---|---|---|
| Where it appears | Certificate holder box | ADDL INSD column + endorsement |
| What it gives you | A copy of the COI | Actual coverage under the policy |
| Created by | Typing a name on the certificate | A policy endorsement |
| Defends you in a lawsuit? | No | Yes |
| Costs the vendor anything? | No | Usually a small premium |
The mistake that costs real money
A property manager requires vendors to "add us to your insurance," the agent lists the management company as the certificate holder, everyone files the COI, and it looks done. Then a contractor's ladder injures a resident, the management company gets named in the suit — and discovers it was never an additional insured at all. It was just on the mailing list. Now the claim lands on the manager's own policy.
To actually be covered, you need to be both: the certificate holder (so you get the document and cancellation notice) and a named additional insured (so you're covered), backed by the endorsement form.
How do I confirm I'm actually an additional insured?
- Find your organization's name in the certificate holder box — confirms you'll receive the document.
- Check the ADDL INSD column is marked on the general liability line.
- Look for the endorsement form number (e.g., "CG 20 10 04 13") in the description of operations — or request the endorsement page itself.
Steps 2 and 3 are the ones people skip, and they're the ones that matter. The fastest way to confirm them is to upload the certificate to the free CertifiKit checker: it reads the additional insured signals, compares them against what you require, and tells you in plain English whether you're actually covered — not just on the mailing list.