By Patrick Turcotte, COO, Docutrax. Last reviewed: 11 August 2026.

An ACORD 25 is the standard form used across the U.S. insurance industry to show proof of liability coverage. It is a certificate, not the policy itself, and what it establishes is narrower than what it is often assumed to establish. Reading it correctly, and knowing when that reading is enough on its own, is the practical skill behind a lot of third-party insurance compliance work.

What the ACORD 25 actually is

ACORD is the standards body that most U.S. insurers, brokers, and agents use to format certificates and policy documents consistently, so a certificate issued by one carrier looks and reads the same as one issued by any other. The current edition of the liability certificate is the ACORD 25 (2016/03), and it is what almost every general liability, automobile liability, umbrella, and workers compensation certificate you receive will use.

Its counterpart, the ACORD 24, is the Certificate of Property Insurance. Where a contract calls for proof of both property and liability coverage, agencies typically issue both forms rather than one combined document.

What each section of the form shows

What a certificate review actually checks

Certificate review is a discipline with its own checklist, not a lighter version of something better. Read properly, the form answers real questions:

• Whether the named insured is the legal entity you contracted with, rather than an affiliate or a trade name that carries no obligation to you.

• Whether the policy dates cover the full period of the work, including the mobilization window before the contract start date.

• Whether the limits meet the contractually required coverage, reading the per occurrence limit and the general aggregate as the separate numbers they are.

• Whether the general liability policy is written on an occurrence or a claims-made trigger. The form has a checkbox for each. Construction general liability is overwhelmingly occurrence based, so a claims-made policy on a construction subcontractor is worth a question, because a retroactive date and reporting requirements then govern whether a later claim is covered at all.

• Whether the general aggregate applies per policy, per project, or per location.

• Whether the excess layer is presented as umbrella liability or excess liability, noting that the form carries no schedule of underlying insurance, so what the layer actually sits above is a question for the policy.

• Whether workers compensation and employers liability are both shown. They are separate coverages doing separate jobs, and employers liability carries its own limits.

Two things the certificate does not show are worth naming. It does not show carrier financial strength, which is why the NAIC number matters and why the AM Best rating is checked separately. And the limits printed on it are the limits at issuance, not what remains after prior claims have eroded the aggregate during the policy period.

When certificate review is genuinely enough

A certificate review can be the appropriate level of oversight when the approved requirements and the inherent risk in the relationship do not call for deeper analysis. That depends on the nature of the relationship, scope of work, contract size, contractually required coverage, potential liability, jurisdiction, the organization’s risk tolerance, and the cost and value of going further. A low-exposure vendor with a narrow scope of work and a modest contract value often does not need the same depth of review as a subcontractor performing structural work on a large capital project.

The question is not whether certificates matter. It is whether the depth of review matches the requirements and the exposure. Where it does, a certificate confirming the right policy types, current dates, and adequate limits can be exactly the right amount of oversight. What it remains, in every case, is evidence of coverage at a point in time rather than confirmation of what the policy says.

What the certificate does not establish on its own

Every ACORD 25 carries a standard disclaimer near the top of the form:

“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. THIS CERTIFICATE OF INSURANCE DOES NOT CONSTITUTE A CONTRACT BETWEEN THE ISSUING INSURER(S), AUTHORIZED REPRESENTATIVE OR PRODUCER, AND THE CERTIFICATE HOLDER.”

The form makes the same point again in its own note above the coverages grid, which states that if the certificate holder is an additional insured the policy must carry additional insured provisions or be endorsed, and that where subrogation is waived, certain policies may require an endorsement. The certificate is telling you, in ACORD’s words, that the document you are holding is not the thing that creates the coverage.
That disclaimer is why, where scope, jurisdiction, completed-operations exposure, or potential liability warrants closer scrutiny, the certificate alone may not reveal the exclusions or endorsement conditions that decide a claim. Courts have ruled against certificate holders more than once on exactly this point:

• DTG Operations, Inc. v. Manheim Remarketing, Inc. (M.D. Fla., decided August 18, 2010). DTG held a certificate listing it as an additional insured. When the insurer refused to defend and indemnify, DTG sued, and the court dismissed the claim at the pleading stage, noting that the certificate was not issued by the insurer and disclaims conferring any rights on the certificate holder or amending the coverage (McGuireWoods).
  
  

• Gilbane Bldg. Co./TDX Constr. Corp. v. St. Paul Fire & Marine Ins. Co., 31 N.Y.3d 131 (New York Court of Appeals, 2018). Gilbane, acting as construction manager on a public project, claimed additional insured status under the policy of a contractor working on the same site. The blanket endorsement extended that status to any organization the named insured had agreed in a written contract to add. Gilbane’s written contract was with the project owner, not with the named insured. The court read the endorsement to require a contract with the named insured, and Gilbane did not have one (Smith, Gambrell & Russell).

  
  

Both cases turn on the same gap: the certificate is a summary someone else prepared. The endorsement, the actual amendment attached to the policy, is what creates additional insured status, primary and noncontributory treatment, or a waiver of subrogation. And blanket endorsements carry conditions of their own, as Gilbane shows. None of those conditions appear anywhere on the certificate. Where the relationship’s exposure warrants confirming them, that means reviewing the endorsement itself, not the certificate’s description of operations field.

What the form says about cancellation notice

The 2016 ACORD 25 states that should any of the described policies be cancelled before its expiration date, notice will be delivered in accordance with the policy provisions. ACORD replaced the older “endeavor to mail” wording on the 2009/09 edition, and the revised certificate had displaced the old one in general use over the course of 2010. Read plainly, the current form commits the insurer to nothing in favour of the certificate holder. Notice reaches you only if the policy itself carries a notice of cancellation endorsement naming you, or the contract obligates the third party to tell you and someone follows up on that obligation.

This is a quieter gap than expired coverage and a harder one to catch. A policy that lapses at renewal appears on an expiration report. A policy cancelled mid-term for non-payment does not, and the certificate sitting in the file still reads as current for the rest of its stated term.

What “additional insured,” “primary and noncontributory,” and “waiver of subrogation” actually mean

These phrases in the description of operations field describe what the submitting party expects the policy to contain. Where a relationship calls for confirming them, each refers to specific endorsement language that either does or does not exist on the underlying policy:

• Additional insured extends liability coverage under the third party’s policy to another organization, typically an owner, general contractor, or property manager that required it in the contract. It also splits in two. Additional insured status for ongoing operations and for completed operations sit on separate endorsements: the ISO CG 20 10 addresses ongoing operations and the CG 20 37 addresses completed operations. The 11 85 edition of the CG 20 10 covered both, which is why the assumption that one endorsement handles everything has proved so durable, but current editions do not work that way. On construction work, the claim that matters often arrives after the third party has left the site. A certificate that reads “additional insured” tells you nothing about which of the two applies.

  
  

• Primary and noncontributory means the third party’s policy responds first, on a primary basis, and its insurer does not seek contribution from the additional insured’s own policy. That is the entire commercial point of requiring it: the loss is paid on the third party’s paper and your coverage and loss history stay out of it. It requires specific endorsement language, such as the ISO CG 20 01, or equivalent wording in the policy, and additional insured status alone does not create it. The ISO form also carries two conditions worth reading rather than assuming: the additional insured has to be a named insured under the other insurance, and the named insured has to have agreed in a written contract that the coverage would be primary and noncontributory. An endorsement can be attached to the policy and still sit dormant if the contract never asked for it.
  
  

• Waiver of subrogation means the third party’s insurer gives up its right to recover from your organization after it pays a claim, including where your own negligence contributed to the loss. Subrogation is the insurer stepping into its insured’s position to pursue whoever caused the loss, and the waiver closes that route. It matters most in workers compensation, where the third party’s carrier would otherwise pursue the owner or general contractor after paying a statutory benefit to an injured employee. The two waivers are separate endorsements on separate coverages: the ISO CG 24 04 on the general liability side, and the WC 00 03 13 on the workers compensation policy. One does not imply the other, and a contract that requires both needs both confirmed.

Moving from certificate review to endorsement review, when it is warranted

Where the requirements and exposure call for it, the next step is not guesswork:

1. Confirm the certificate’s basic fields: correct legal entity names, current policy dates, and limits that meet the contractually required coverage.

2. Start from the contract, not the certificate. List the endorsements the contract requires, then request those specific endorsements from the third party’s brokers and agents. The description of operations field is the third party’s summary of what it believes is on the policy, and it can omit anything the contract requires.

3. Reconcile what comes back against what was requested. Confirm the endorsement forms and editions match the requirement, and read the edition date rather than the form number alone, since editions of the same form differ in scope. Carriers also use their own numbering alongside the ISO forms, so a non-ISO form is not automatically deficient and a familiar form number is not automatically the right edition.

4. Read the conditions on any blanket endorsement. Most grant status only where a written contract with the named insured requires it, and often only where that contract was executed before the loss.

5. Track the expiration date and re-verify at renewal, and treat mid-term cancellation as its own exposure given what the form says about notice.
   This is the certificate plus endorsement review depth, and it is proportionate exactly where a certificate alone leaves a real question open, not as a default upgrade for every relationship regardless of exposure.