Reading a certificate of insurance means working through the ACORD 25 form field by field: confirm the named insured, check each coverage type and its limits, read the dates, and look closely at the description of operations box for the endorsement language your contract requires. The certificate summarizes what policies were in force the moment it was printed. It does not, on its own, prove you are covered. That distinction shapes everything else on the page.
Start With the Disclaimer at the Top
Every ACORD 25 prints a block of capitalized text near the top: “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.” A second notice adds that listing someone as an additional insured on the certificate alone does not grant that status unless the underlying policy carries the proper endorsement.
Most people skim past that block. Don’t. It tells you exactly what you’re holding: a summary prepared by an agent or broker describing coverage that existed at the moment of printing. It does not bind the insurer to cover you, even if your name appears on the form. Only the actual policy language controls who is covered, what is covered, and how much the insurer will pay. If the certificate and the policy disagree, the policy wins.
The practical consequence catches people off guard. Being named as a certificate holder gives you almost no legal rights. You cannot file a claim under someone else’s policy just because you hold their certificate. To have rights, you need to be named as an additional insured through a policy endorsement, and the certificate is at best evidence that the endorsement was requested.
Identify the Producer, the Named Insured, and the Insurers
The top section identifies two parties. The “Producer” is the agent or broker who issued the certificate, with their contact information. The “Insured” is the business or individual who purchased the coverage. Below that, the form lists up to six insurance companies, labeled “Insurer A” through “Insurer F,” each with a name and NAIC number.
Check the NAIC number. It’s assigned by the National Association of Insurance Commissioners, and you can look it up through the NAIC’s Consumer Insurance Search tool or your state’s department of insurance to confirm the company is licensed to write coverage in your state.1National Association of Insurance Commissioners. Consumer Insurance Search Results An unlicensed insurer can mean no real recourse if a claim is denied.
The named insured deserves the same scrutiny. If your contract is with “Smith Construction LLC” but the certificate lists “Smith Construction” without the LLC designation, that mismatch can create trouble when a claim is filed. The insurer can argue the entity performing the work isn’t the entity on the policy. The same problem shows up with trade names, DBAs, and parent-subsidiary confusion. The name on the certificate should match the name on your contract exactly.
Work Through the Coverage Grid
The middle section is a grid, one row per coverage type. On a standard ACORD 25 you will typically see four categories.
- Commercial general liability covers third-party bodily injury and property damage. The form indicates whether it’s written on an “occurrence” or “claims-made” basis, which affects when claims can be reported.
- Automobile liability covers claims arising from vehicle use. The form specifies whether it applies to all owned vehicles, hired vehicles, non-owned vehicles, or some combination.
- Umbrella or excess liability provides additional limits above the primary policies. An umbrella may also broaden coverage; an excess policy only raises the dollar ceiling without expanding scope.
- Workers’ compensation and employers’ liability covers employee injuries on the job. It’s legally required in nearly every state for businesses with employees.
Each row shows the insurer letter matching the company listed at the top, the policy number, effective and expiration dates, and the applicable limits. Two narrow columns, “ADDL INSD” and “SUBR WVD,” use checkboxes or Y/N to indicate whether additional insured status and waiver of subrogation apply to that particular line. If your contract requires either provision, this is your first check, though you still need to confirm the endorsement exists in the actual policy.
Reading Coverage Limits
Limits appear in the rightmost column, and the distinction between per-occurrence and aggregate trips people up constantly. A general liability policy might show $1 million per occurrence and $2 million aggregate. The per-occurrence limit is the most the insurer will pay for any single claim. The aggregate is the total the insurer will pay across all claims during the policy period. If a contractor has already had $1.5 million in claims paid this year, only $500,000 of that $2 million aggregate remains available for your project.
The form also lists sublimits that apply inside the broader coverage. Common ones include “Damage to Rented Premises” (often $100,000 or $300,000), “Medical Expense” per person, and “Personal and Advertising Injury.” These can be far lower than the headline per-occurrence limit, so if your exposure falls into one of those categories, the top-line number is misleading.
Note the small disclaimer on the form: “LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS.” The limits printed are the original policy limits, not necessarily what remains. Nothing on the certificate reveals how much of the aggregate has already been used. On a large project, ask the insurer or broker directly.
Deductibles and Self-Insured Retentions
Deductibles don’t always appear on the face of a COI, but they matter. A deductible is subtracted from what the insurer pays. On a $100,000 claim with a $10,000 deductible, the insurer pays $90,000 and the policyholder covers $10,000.
A self-insured retention works differently, and this is where money gets lost. With a self-insured retention, the policyholder must pay the full retention amount before the insurer pays anything at all. Using the same numbers, the policyholder pays the first $10,000 in defense costs and damages, and only then does the insurer step in up to the policy limit. If the policyholder can’t come up with the retention, the insurer doesn’t fill the gap. You wait until the policyholder produces the money before any coverage responds.
If the description of operations box notes a self-insured retention, look at the dollar amount. A $5,000 retention is manageable for most businesses. A $250,000 retention tells you the policyholder is carrying serious risk themselves, and their financial stability matters as much as their coverage limits.
Additional Insured Status
Being named as an additional insured on someone else’s policy is one of the most common contractual requirements in business, and one of the most commonly botched. Done correctly, the other party’s insurer will defend and indemnify you against claims arising from that party’s work. Done poorly, you think you’re covered and find out otherwise when a claim lands.
First check whether the ADDL INSD column shows a “Y” or checkmark for the relevant coverage line. That checkbox alone isn’t enough. The real protection depends on which endorsement was added to the policy. The two most common ISO forms are the CG 20 10, covering ongoing operations, and the CG 20 37, covering completed operations. CG 20 10 protects you while the work is happening; coverage ends once the project wraps up. CG 20 37 picks up after the work is finished and covers claims that surface later.
If your contract requires additional insured status for completed operations but the certificate references only ongoing operations, you have a gap that won’t reveal itself until a claim shows up after the job is done. Most construction contracts and many service agreements should call for both forms.
Primary and Noncontributory Language
Even with additional insured status, there’s a secondary question: which policy pays first? Without “primary and noncontributory” language, the other party’s insurer might argue your own general liability policy should share the cost equally or even pay first. Primary and noncontributory means their policy responds first and their insurer won’t seek contribution from yours. Your policy kicks in only if the claim exceeds their limits.
If your contract requires primary and noncontributory coverage, look for that exact language in the description of operations box. Then confirm it exists as an endorsement on the actual policy. A certificate notation without a corresponding endorsement is worth nothing if the claim is contested.
Waiver of Subrogation
Subrogation is an insurer’s right to pursue a third party to recover money it paid on a claim. A waiver of subrogation gives up that right. If your contractor’s employee is injured on your property and the contractor’s workers’ comp insurer pays the claim, a waiver of subrogation prevents that insurer from turning around and suing you to recover.
The SUBR WVD column indicates whether this applies, and the description of operations box should note it. Like additional insured status, a waiver only works if backed by an endorsement in the actual policy. The standard ISO endorsement for commercial general liability waiver of subrogation is the CG 24 04, which activates only when the insured has agreed to the waiver in a written contract signed before the loss.
Policy Dates and Coverage Triggers
Every coverage line shows an effective date and an expiration date. If you’re looking at a certificate in March 2026 and the expiration reads January 2026, coverage has lapsed. Obvious in principle; missed all the time in practice, especially on long-term projects where nobody remembers to request updated proof.
Beyond the dates, the type of trigger matters. The general liability section will indicate whether the policy is written on an “occurrence” or “claims-made” basis. An occurrence policy covers any incident that happens during the policy period, whenever the claim is filed. A customer who slips in a store in 2026 can sue in 2028, and the 2026 occurrence policy still responds.2The Hartford. Comparing a Claims-Made vs. Occurrence Policy
A claims-made policy is different. It covers only claims that are both reported during the active policy period and that arise from incidents occurring on or after a retroactive date specified in the policy.3IRMI. Claims-Made Policy If the policyholder switches insurers or lets the policy lapse without buying an extended reporting period (sometimes called “tail coverage”), claims from past incidents may not be covered at all. When you see “claims-made” on a COI, the retroactive date is the critical number. If it postdates the start of your project, incidents from the early phases may have no coverage.
The Description of Operations Box
Near the bottom of the form, a free-text box labeled “Description of Operations / Locations / Vehicles” is the catch-all where the agent notes anything that doesn’t fit in the grid. This is where you’ll find references to specific projects, job sites, contract numbers, additional insured language, primary and noncontributory notations, and waiver of subrogation mentions.
Read this box carefully. It’s where the certificate either confirms or fails to confirm your contractual requirements. If your contract requires additional insured status with primary and noncontributory coverage and a waiver of subrogation, all of that language should appear here. If it doesn’t, the certificate isn’t meeting your requirements.
The certificate holder’s name and address appear in their own box at the bottom. That’s you or your company. Confirm your legal name is spelled correctly and the address matches. Errors here create confusion about who the certificate was issued to, especially if a claim is disputed.
Cancellation Notice: Read the Fine Print
One of the biggest misconceptions about certificates of insurance is that holding one entitles you to notice if the policy is cancelled. Earlier versions of the ACORD 25 included cancellation notice language, but ACORD removed those provisions from the current form. The standard certificate no longer promises the insurer or agent will notify the certificate holder of cancellation.
A contractor’s policy could be cancelled next week and you’d have no way of knowing until you asked. Some agents will type cancellation notice language into the description of operations box, but that practice is legally risky for the agent and may violate state insurance regulations. It also doesn’t bind the insurer unless the underlying policy contains a cancellation notice endorsement that specifically names you as a party entitled to notice.4IRMI. Notice of Cancellation Endorsement
If cancellation notice matters, and on any significant project it should, request a notice of cancellation endorsement by name. That modifies the policy itself to require notice to designated parties before coverage ends. Not every insurer will provide one. Failing that, build your own safety net by requesting fresh certificates at regular intervals, such as quarterly or before issuing each progress payment.
Verify the Certificate Is Legitimate
A COI is easy to fabricate. The form is standardized, widely available, and any competent forger can produce one that looks authentic. The most reliable check is calling the producer listed on the certificate directly, using a number you find independently rather than one printed on the form. The producer can confirm the policy is active, the limits are accurate, and the endorsements listed actually exist.
Require certificates to be sent directly from the agent or broker to you, rather than accepting copies forwarded by the insured party. That step alone eliminates most forgery risk.
One specific fraud worth knowing about involves workers’ compensation “ghost policies.” A ghost policy is a minimum-premium workers’ comp policy designed for business owners with no employees. It generates a legitimate-looking COI at a fraction of the cost of real coverage. The trouble comes when a contractor buys a ghost policy, hires employees off the books, and hands you a certificate that appears to show active workers’ comp when no actual employee coverage exists. If that contractor’s employee is injured on your job site, you could be on the hook for medical costs and lost wages. Many states run online proof-of-coverage tools that show whether a specific employer has active workers’ comp with real employee classifications; use them when they exist.
A Five-Minute Checklist
The same mistakes show up on certificate after certificate. Running through these checks takes about five minutes and heads off the most common failures.
- The named insured matches your contract exactly, not a trade name, parent company, or former entity name.
- Every coverage type your contract requires appears on the form: general liability, auto, umbrella, workers’ comp.
- Limits meet or exceed your contractual minimums, both per-occurrence and aggregate. If an umbrella or excess policy is used to reach higher limits, it’s shown on the form.
- Policy dates cover your entire project or agreement. If your lease runs through 2028, a policy expiring in 2026 leaves a gap; set a calendar reminder to request renewals.
- Additional insured status is marked in the ADDL INSD column, and the description of operations box names your entity and references the correct endorsement forms (CG 20 10 for ongoing operations, CG 20 37 for completed operations, where both are required).
- Primary and noncontributory language appears in the description of operations box if your contract requires it.
- Waiver of subrogation shows “Y” in the SUBR WVD column and is confirmed in the description box if required.
- Claims-made policies show an acceptable retroactive date, no later than the start of your relationship.
- The insurer’s NAIC number checks out through the NAIC’s search tool or your state’s department of insurance.1National Association of Insurance Commissioners. Consumer Insurance Search Results
None of this replaces reviewing the actual policy and endorsements when the stakes are high. A certificate is a starting point for verification, not the finish line. On large construction projects, significant leases, or any engagement where a liability claim could exceed six figures, request copies of the relevant endorsements and have your broker or risk manager read the actual policy language. Five minutes spent reading a certificate properly can save months of litigation over coverage that was never really there.