Last updated: July 2026
A certificate of insurance (COI) is a one-page document that proves your insurance policies are in force. It is issued on the standard ACORD 25 form and lists your insurers, coverage types, limits, and dates. It is evidence of coverage, not the policy itself and not a contract, and it only confirms coverage as of the day it was issued. It also confers no rights on the party holding it unless the policy is separately endorsed.
You were asked for a certificate of insurance. Here is what that actually is
Before a general contractor, property owner, or client lets you on a job, they almost always ask for a certificate of insurance. It is the single most common piece of paperwork in contracting, and it is also one of the most misunderstood. Understanding what it is, and what it is not, keeps your certificate from getting bounced and keeps you from assuming coverage you do not have.
A certificate of insurance is a summary document that provides evidence that you carry certain coverage at certain limits. It is not the same as your policy. As industry reference IRMI puts it, a certificate verifies that a policy exists and summarizes its key provisions, but it is not the insurance policy itself and does not create a contract between the certificate holder and your insurer. Two things follow from that, and both matter:
- It is a snapshot in time. A certificate confirms coverage was in force on the day it was issued. If your policy is later cancelled, the certificate someone is holding does not keep you covered.
- It does not, by itself, give the holder any coverage. Being named on a certificate is not the same as being added to your policy. More on that below, because it is where most disputes start.
If you need one issued quickly for a bid, that is a separate question; see how to get a same-day certificate of insurance. This guide is about understanding the certificate itself.
How to read your ACORD 25
Almost every liability certificate you send or receive is an ACORD 25, Certificate of Liability Insurance, the standard industry form. The current edition is ACORD 25 (2025/12), which replaced the long-running 2016/03 edition. Knowing what each part of the form means lets you check your own certificate before a client rejects it.
| Section of the form | What it shows |
|---|---|
| Producer | Your insurance agent or broker, the office that issued the certificate. |
| Insured | Your business. This must match the exact legal name and address on your contract, or the certificate can be rejected. |
| Insurers A–F | The carriers providing each coverage, each with an NAIC number, keyed by letter into the rows below. |
| General Liability | Each occurrence, general aggregate, products and completed operations aggregate, and personal and advertising injury limits; whether it is occurrence or claims-made. |
| Automobile, Umbrella/Excess, Workers’ Comp | Your other coverage lines with their limits. Workers’ comp shows the statutory coverage plus employers’ liability limits. |
| Policy numbers and dates | The policy number and effective and expiration dates for each line. The dates must cover your work period. |
| Description of Operations | The free-text box where the project or jobsite, and any additional insured, waiver of subrogation, or primary and noncontributory wording, appear. |
| Certificate Holder | The party receiving the certificate, usually the GC or owner requiring proof. |
Across the top sits the disclaimer band, which states the certificate is issued as a matter of information only, confers no rights on the holder, and does not amend, extend, or alter the coverage the policies provide. That sentence is the key to the next section.
Certificate holder is not additional insured
This is the misunderstanding that causes the most trouble. When a general contractor asks to be on your certificate, they usually want two very different things, and only one of them comes from the certificate.
Being listed in the certificate holder box means one thing: that party receives a copy of the certificate. It grants them no coverage. Being an additional insured means coverage under your policy is actually extended to them, and that only happens when your insurer adds an additional insured endorsement to the policy. As the certificate itself says, it confers no rights; the endorsement creates the coverage, not the certificate. A line typed into the Description of Operations box that reads “additional insured per contract” means nothing on its own if no endorsement backs it.
What your client is actually checking, and how they verify it
When a GC or owner reviews your certificate, they are checking a short list. Check the same list yourself before you send it:
- Limits meet the contract. Usually $1 million per occurrence and $2 million aggregate for general liability, sometimes more with an umbrella.
- Dates cover the work. The policy periods must run through the end of your project, not expire midway.
- The right entity is named, both your legal name as the insured and theirs as certificate holder.
- Required endorsements are real, not just typed on. Additional insured, waiver of subrogation, and primary and noncontributory should be backed by endorsements, sometimes identified by ISO form number.
Sophisticated clients go further, because fake certificates are a real problem: a convincing ACORD 25 can be produced in minutes from a free template and a PDF editor. The reliable way to verify a certificate is to require it directly from the issuing agent or carrier rather than from the contractor, confirm the agency is licensed in the state, and confirm policy numbers and endorsements with the carrier. A certificate that arrives from the insured instead of the producer, or that shows altered or whited-out fields, is a red flag. Knowing this cuts both ways: it is also how you should collect certificates from your own subcontractors.
Why a contractor’s certificate gets rejected
Most rejections are documentation problems, not coverage problems: you have the insurance, but the paper does not prove it the way the contract demands. The ones we see most:
- The certificate holder or insured name does not match the contract exactly, down to the entity type and spelling.
- Limits are below the contract minimum, or a required umbrella layer is missing.
- Policy dates have lapsed or expire before the project ends.
- Additional insured is typed on the certificate but not endorsed, so a portal cannot confirm it.
- The Description of Operations box is missing required wording, such as the project reference, waiver of subrogation, or primary and noncontributory language.
The fix is almost always a wording or documentation correction, which is exactly why it is frustrating: the coverage is there, but the certificate does not show it in the form the contract demands. A broker who issues the certificate and the endorsements together, to your exact contract requirements, is how you avoid the back-and-forth. See the certificate of insurance basics page for a quick reference.
Key takeaways
- A certificate of insurance is evidence of coverage on the ACORD 25 form, not the policy and not a contract, and it reflects coverage only as of its issue date.
- The certificate holder gets a copy and no coverage; an additional insured has coverage extended by an endorsement.
- Clients check limits, dates, the exact named entity, and whether endorsements are real, and careful ones verify the certificate directly with your agent.
- Most rejections are wording or documentation issues, not missing coverage.
- Have your broker issue the certificate and the required endorsements together, to your exact contract wording.
Frequently asked questions
What is a certificate of insurance for a contractor?
It is a one-page document, issued on the standard ACORD 25 form, that proves your insurance policies are in force. It lists your insurers, coverage types, limits, and effective and expiration dates. It is evidence of coverage, not the policy itself and not a contract, and it confirms coverage only as of the day it was issued.
Is a certificate of insurance the same as my insurance policy?
No. A certificate summarizes your policies and provides evidence that coverage exists, but it is not the policy and does not create a contract between the certificate holder and your insurer. If your policy is later cancelled, a certificate someone is holding does not keep you covered.
What is the difference between certificate holder and additional insured?
The certificate holder simply receives a copy of the certificate and gains no coverage from it. An additional insured has coverage under your policy actually extended to them, which happens only when your insurer adds an additional insured endorsement. The certificate confers no rights; the endorsement creates the coverage.
What form is a certificate of insurance issued on?
Liability certificates are issued on the ACORD 25, Certificate of Liability Insurance, the standard industry form. The current edition is ACORD 25 (2025/12), which replaced the 2016/03 edition. It shows your producer, your business as the insured, each insurer, and rows for general liability, automobile, umbrella, and workers’ compensation with their limits and dates.
What do I need to check on my certificate before I send it?
Confirm the limits meet the contract, the policy dates cover your full work period, your legal name and the certificate holder’s name are exact, and any required endorsements such as additional insured or waiver of subrogation are actually endorsed on the policy, not just typed into the Description of Operations box.
Why does my certificate of insurance keep getting rejected?
Most rejections are documentation issues rather than coverage gaps: a certificate-holder or insured name that does not match the contract exactly, limits below the minimum, expired or lapsing dates, an additional insured claimed on the certificate but not endorsed, or missing required wording in the Description of Operations box. The coverage is usually there; the certificate just does not prove it in the form the contract demands.
How does a client verify a certificate of insurance is real?
Because fake certificates are easy to produce, careful clients require the certificate to come directly from the issuing agent or carrier rather than from the contractor, confirm the agency is licensed with the state, and confirm policy numbers and endorsements with the carrier. A certificate sent by the insured instead of the producer, or one with altered fields, is a red flag.
What is the Description of Operations box on a certificate for?
It is the free-text section of the ACORD 25 where project or jobsite references and specific coverage wording go, including additional insured, waiver of subrogation, and primary and noncontributory language. Contracts and vendor portals often require exact wording here, and missing or incorrect wording is a common reason a certificate is rejected.
Sources
Need a certificate that passes the first time?
ContractorsInsured.net is a licensed insurance brokerage (CA Lic #6015321, TX Lic #3305690). Send us your contract’s insurance requirements and we issue the certificate and the endorsements together, to the exact wording, so it clears the portal instead of bouncing.
This guide is general information for contractors, not legal or insurance advice. Certificate and coverage details vary by policy, form edition, contract, and state; confirm specifics with your broker or agent.