Additional Insured vs. Certificate Holder

A certificate holder receives a snapshot of your policy. An additional insured is covered by it. Those are completely different things, and being listed in the certificate holder box gives the other party no rights under your policy at all. Additional insured status exists only when an endorsement has actually been added to the policy — the certificate reports that fact, it never creates it.

Written by the OneTrust team · Last reviewed 27 August 2026

The short version

The certificate holder box is an address label. It says where the document was sent.
Additional insured status comes from an endorsement on the policy. No endorsement, no coverage, no matter what the certificate says.
The endorsement form number and edition date decide what the additional insured actually gets. CG 20 10 alone does not cover completed operations.
Since the 2013 editions, the additional insured gets the lesser of the limits your contract requires or the limits on your policy — the endorsement will not raise them.
In North Carolina and South Carolina, the anti-indemnity statutes that limit hold-harmless clauses expressly do not touch insurance contracts. The endorsement survives where the indemnity clause may not.

What the certificate actually says

Every ACORD 25 Certificate of Liability Insurance carries a disclaimer across the top. It is not fine print anyone slipped in — it is part of the standard form, and it says exactly what the document is:

“THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS CERTIFICATE DOES NOT AFFIRMATIVELY OR NEGATIVELY AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW.”

And, further down: “If the certificate holder is an ADDITIONAL INSURED, the policy(ies) must be endorsed.”

The form tells you in capital letters that it is not insurance. It is a status report on a policy that exists somewhere else. If the policy changes tomorrow, the certificate does not update itself, and the certificate holder is not entitled to be told.

North Carolina puts the same rule in statute. Under N.C.G.S. § 58-3-149, “a certificate of insurance is not a policy of insurance and does not amend, extend, or alter the coverage afforded by the policy to which the certificate of insurance makes reference.” The statute makes it unlawful to knowingly prepare, issue, request, or require a certificate that contains false or misleading information about the policy, that purports to alter the coverage, or that includes information not contained in the underlying policy. A person not otherwise regulated under Chapter 58 who violates it faces a civil penalty of up to $5,000.

That statute is why your agent will not simply type the sentence your general contractor asked for onto the certificate. It is not stubbornness. Adding wording that the policy does not support is a violation, and it would not help you anyway — a court reads the policy, not the certificate.

What additional insured status actually gives them

An additional insured endorsement changes the policy. It extends your liability coverage to another party for liability connected to your work. Practically, that means when the general contractor gets named in a suit arising out of your crew's work, your carrier defends them and pays on their behalf, inside your limits.

Two consequences follow, and business owners are regularly surprised by both:

It shares your limits. The endorsement does not buy a second policy. If your general liability is $1,000,000 per occurrence, the additional insured is defended and indemnified out of that same $1,000,000. A bad claim can consume the limit you were relying on for yourself.
Defense costs are usually the real money. On most CGL policies defense is paid in addition to the limit, which is exactly why general contractors want additional insured status — being defended by someone else's carrier is worth more than the indemnity in the majority of construction claims.

The form number is the whole conversation

“Name us as additional insured” is not a specification. The ISO forms that do it differ from one another in ways that decide claims. These are the four you will meet most often on a construction contract:

All four are titled “Additional Insured – Owners, Lessees Or Contractors – …”. The ending is what separates them.
Form	Title ends with…	What it actually does
`CG 20 10`	… Scheduled Person Or Organization	Names a specific party. Covers liability caused in whole or in part by your acts or omissions in the performance of your ongoing operations. Once your work is finished, it stops.
`CG 20 37`	… Completed Operations	The other half. Covers the named party for liability arising out of your completed work — the claims that show up a year or three after the job closed out.
`CG 20 33`	… Automatic Status When Required In Construction Agreement With You	Blanket, so nobody has to be scheduled by name. But it has been read to reach only parties you contracted with directly, and it covers ongoing operations only.
`CG 20 38`	… Automatic Status For Other Parties When Required In Written Construction Agreement	Written to close the gap in `CG 20 33`. Picks up the upstream parties — typically the project owner — that your GC’s contract requires you to cover even though you never signed anything with them.

Here is the trap that costs the most money. A contract says “name us as additional insured for ongoing and completed operations,” the sub's policy carries CG 20 10, and everyone signs off. Two years after the job is done a homeowner sues over the work. CG 20 10 covers ongoing operations. The work is not ongoing. The general contractor is not an additional insured for that claim, and finds out during the tender.

Covering both requires both forms, or a blanket endorsement written to include completed operations. When your contract asks for both, we check which editions are actually attached to your policy rather than assuming.

What changed in the 2013 editions

ISO revised these endorsements in the 04 13 editions, and the revisions narrowed them. Two changes matter to you:

“To the extent permitted by law.” The insurance afforded to the additional insured now applies only to the extent the law allows. Where a state's anti-indemnity statute would void the underlying risk transfer, the endorsement is written to follow that limit rather than override it.
Limits are capped at what the contract required. If your agreement requires additional insured coverage, the carrier pays the lesser of the amount required by the contract or the limits on your declarations page. The endorsement expressly does not increase your limits.

The second one cuts both ways and it is worth understanding before you negotiate. If your contract demands $2,000,000 and you carry $1,000,000, the endorsement does not manufacture the second million — you are in breach of the contract, not covered for it. If the contract demands $1,000,000 and you carry $2,000,000, the additional insured gets $1,000,000, not your full limit.

There is also an older distinction that still turns up, because policies renew with whatever edition the carrier files. The 1985 edition of CG 20 10 used “arising out of your work” — broad language that swept in completed operations. Editions from 2004 forward use “caused, in whole or in part, by” your acts or omissions, which requires a causal link to your conduct. If someone hands you a contract written against a 1985 form, the coverage available in the market today is narrower than what the contract assumes.

The Carolinas wrinkle worth knowing

Both Carolinas restrict how far a construction contract can push liability downhill, and both carve insurance out of the restriction.

North Carolina, N.C.G.S. § 22B-1 voids a provision in a construction contract that requires you to indemnify another party against liability for bodily injury or property damage proximately caused by the negligence of that party. But subsection (e) says the section “shall not affect an insurance contract, workers' compensation, or any other agreement issued by an insurer.”

South Carolina, S.C. Code § 32-2-10 makes a promise to indemnify another party against liability arising from that party's sole negligence unenforceable as against public policy — and states that the section “shall not affect any insurance contract or workers' compensation agreements.”

The practical upshot: an indemnity clause and an additional insured requirement are two separate mechanisms, and knocking out the first does not knock out the second. That is precisely why sophisticated general contractors ask for both. It is also why the endorsement request in your contract deserves as much attention as the hold-harmless paragraph you were told to sign, and often more.

What to do when a contract asks for it

Send us the insurance requirements page before you sign. Not the certificate request afterward — the contract. Requirements are negotiable; endorsements are not retroactive.
Ask what the endorsement costs. Blanket additional insured with completed operations is inexpensive on most contractor policies and occasionally not available at all, depending on carrier and class. Better to learn that during bidding.
Check your limits against the requirement. The 2013 cap means the contract's number is the ceiling on what the additional insured collects. If you are short, you are in breach.
Watch for requirements your policy structurally cannot meet — additional insured status on a workers' compensation policy, for example, which is not a thing that exists. We will tell you which lines to push back on.

We do this reading for clients as part of the account, not as a separate engagement. It is the single highest-value thing an agent does for a contractor, and it happens before the loss rather than after.

Frequently asked questions

Does being listed as certificate holder make someone an additional insured?

No. The certificate holder box records who the certificate was issued to. Additional insured status requires an endorsement added to the policy itself. The ACORD 25 form says so directly: if the certificate holder is an additional insured, the policy must be endorsed.

What is the difference between CG 20 10 and CG 20 37?

CG 20 10 covers the additional insured for liability caused by your ongoing operations — while the work is being performed. CG 20 37 covers them for your completed operations, meaning claims that arise after the work is finished. A contract requiring both needs both endorsements, or a blanket form written to include completed operations.

Does an additional insured endorsement increase my limits?

No. Since the 2013 editions the endorsement states that it will not increase the applicable limits of insurance, and the additional insured is covered for the lesser of what the contract requires or the limits on your policy. The additional insured shares your existing limits with you.

Can my agent just add the wording my general contractor wants to the certificate?

No, and in North Carolina it is unlawful. N.C.G.S. 58-3-149 prohibits knowingly issuing a certificate that contains false or misleading information about the policy, purports to alter coverage, or includes information not in the underlying policy. Wording on a certificate does not create coverage in any event — the endorsement does.

Does North Carolina's anti-indemnity statute stop a general contractor requiring additional insured status?

No. N.C.G.S. 22B-1 limits indemnity provisions in construction contracts, but subsection (e) states the section does not affect an insurance contract. South Carolina's Section 32-2-10 has comparable language. The additional insured endorsement sits outside the restriction, which is why contractors are asked for both an indemnity clause and the endorsement.

How quickly can OneTrust get an additional insured endorsement issued?

It depends on the carrier and whether your policy already carries a blanket form. If it does, the certificate can usually go out the same business day. If a scheduled endorsement has to be issued, it is typically one to three business days. Send us the contract requirements early and we will tell you which situation you are in.

This page explains how these endorsements and contract terms generally work. It is not a coverage opinion. What your policy actually covers is decided by the policy language, the endorsement editions actually attached, and the contract you signed — all of which we are happy to read. Send us the requirements or call (704) 461-3020.

Send us your requirements Call (704) 461-3020