How to read a certificate of insurance
To read a certificate of insurance, work from top to bottom: the producer (the agency that issued it), the named insured (the business the policies cover), the lettered list of insurance companies, then the grid of policy numbers, dates, and limits — and finally the certificate holder box and signature at the bottom. If the dates are current, the names match, and the limits columns are filled in, you've already caught the most common problems.
A COI is a one-page summary of a business's insurance coverage — and that single sentence is all the definition we need here. Helpfully, almost every certificate you'll come across follows the same standard layout (usually the ACORD 25 form), so once you can read one, you can read them all. Whether you're checking a certificate a sub sent you or sanity-checking your own before it goes out, the reading order is the same.
Start at the top: producer, insured, and insurers
The producer is the insurance agency or brokerage that issued the certificate, listed with its contact details in the top-left corner. That's the number to call if anything looks off or needs verifying — not the contractor, and not the insurance company's national line.
Below that sits the insured: the business the policies actually cover. The name here should match the legal name of the company you're dealing with. If you hired a company called, say, Rodriguez Electrical LLC and the certificate names a different entity, that's worth a phone call before anything else.
To the right, the insurance companies are listed and labeled with letters — Insurer A, Insurer B, and so on. Those letters aren't decoration: each coverage row further down cites the letter of the company carrying that policy, so you can see exactly who stands behind what.
Policy numbers and dates
The middle of the form is a grid: one row per policy type (general liability, auto, umbrella, workers' compensation), each showing the insurer letter, the policy number, an effective date, and an expiration date.
The policy number is mostly there for verification — if you call the producer, that's the reference they'll pull up. The dates matter more day to day: the coverage on that row is active between the effective and expiration dates, and not a minute after.
One thing to keep in mind: a COI is a snapshot of coverage as of the day it was issued. It doesn't update itself if a policy renews, changes, or gets cancelled later — which is why the certificate itself carries disclaimer language saying it's provided for information only.
The limits columns
The right-hand side of the grid shows dollar limits for each policy. Two labels show up on nearly every certificate: "each occurrence" (roughly, the most the policy pays for a single incident) and "aggregate" (the ceiling for the whole policy term). Other rows use their own labels — auto liability often shows a combined single limit, while the workers' comp row shows employer's-liability limits (per-accident and per-employee disease figures) — the comp benefits themselves are set by state law, which is what the "per statute" checkbox refers to.
You don't need to memorize what every label means to sanity-check a certificate. Look for two things: the columns are actually filled in (no blanks or zeros where a number belongs), and the figures line up with whatever the contract asked for. What counts as "enough" varies by state, trade, and contract — many clients and general contractors spell it out in the agreement, so compare against that, or ask your insurance agent.
Description of operations, certificate holder, and signature
The description of operations box is free text, and it's where job-specific details live: the project name or address, plus any special wording — for example, a note that the certificate holder is named as an additional insured. Keep in mind the certificate usually states that it doesn't amend the policy; the policy documents control, and this box just describes what's supposed to be in them.
The certificate holder box, bottom-left, names the person or company the certificate was issued to. If you requested the COI, your business name and address usually belong here — a generic "for informational purposes" entry means it wasn't issued for you specifically. Bottom-right is the authorized representative's signature; an unsigned certificate isn't finished.
A 60-second sanity check
Once you know the layout, most problems jump out in under a minute. Run down this list every time a certificate crosses your desk:
- Dates: no expiration date has passed — and none will pass mid-project.
- Names: the insured matches the legal name of the business you hired, and the certificate holder is you.
- Insurers: every letter cited in the grid maps to a real company in the insurer list.
- Limits: the columns are filled in, with no blanks where the contract expects a number.
- Description: the job or project is mentioned, if that was requested.
- Signature: the authorized representative actually signed it.
The field that bites later: expiration
Most COI problems aren't visible on day one — they show up when a policy quietly expires mid-project and nobody re-checks the certificate. The fix is boring but effective: note every expiration date the day a certificate arrives, and request a fresh COI as renewals come around.
CompliCloud reads the expiration dates off every certificate you upload and warns you before any of them lapse — whether it's your own COI or a stack collected from your subs.
Common questions
What does "producer" mean on a certificate of insurance?
The producer is the insurance agency or brokerage that prepared and issued the certificate. Its contact details are printed on the form so anyone holding the certificate can call to verify coverage or ask questions.
What do the letters next to the insurance companies mean?
They're cross-references. Each insurer is labeled A, B, C, and so on, and every coverage row in the grid cites the letter of the company carrying that particular policy — so you can tell which insurer stands behind which coverage.
How do I know if a COI is still valid?
Check the expiration date on each coverage row against today's date, and remember that a certificate only reflects coverage as of the day it was issued — it doesn't update itself if a policy renews or cancels. If anything could have changed, ask the producer for a freshly issued certificate.
Is an unsigned COI a problem?
A finished certificate carries the signature of an authorized representative in the bottom corner. If it's missing, the certificate isn't complete — go back to the producer and ask for a properly issued copy.
This guide is general information for US trades businesses, not legal or insurance advice. Requirements vary by state, locality and contract — confirm the specifics with your licensing body, your client’s contract, or your insurance agent.