COI field guide

How to Read a Certificate of Insurance: A Field-by-Field Guide

A certificate of insurance is easier to review when you treat it as a structured summary rather than a single approval document. Read the identity, policy period, coverage, limits, recipient, and supporting-evidence sections separately.

By COI Workbench Editorial Team · Reviewed September 2026 · General U.S. guidance

Before you read the certificate

Place the current written insurance requirement beside the certificate. Without the contract exhibit, vendor instruction, lease clause, or client email, you can see what the certificate displays but not what the requester expects. Use the version that actually controls the project and note its date.

Field-by-field certificate review

1. Date issued and producer

The certificate date tells you when the summary was prepared. It is not the policy effective date. The producer section identifies the agency or broker associated with the certificate and normally provides contact details for questions. Do not treat an old issue date alone as proof that the policy expired; move next to the policy-period fields.

2. Insurers and identifying letters

A certificate may list several insurers, often assigned letters. Each coverage row can point back to the insurer responsible for that policy. This matters when the submission package contains general liability, auto, workers’ compensation, umbrella, or professional liability from different carriers. Record inconsistencies for the issuing professional rather than guessing which company provides a line.

3. Named insured

Compare the insured name with the business that signed the contract. Pay attention to legal suffixes, punctuation, assumed names, and related entities. A certificate for “Northside Services LLC” may not answer a requirement addressed to “Northside Electrical, Inc.” even if the same owner operates both. Ask the agent how the policy identifies the insured entity; never edit the certificate.

4. Coverage rows

Review each requested line independently. A common certificate may show commercial general liability, automobile liability, umbrella or excess liability, workers’ compensation and employer’s liability, plus an “other” area. Specialized policies such as professional, cyber, or pollution liability may appear elsewhere or on separate evidence. The absence of a row is a question—not permission to infer that the coverage is included inside another policy.

5. Policy numbers and dates

Policy identifiers are sensitive business information, so do not paste them into public forms. For your own review, compare the effective and expiration dates for every required line with the project start and expected completion. A certificate can be accurate today but require renewed evidence during a long project. Build a renewal follow-up rather than assuming the current document covers the entire schedule.

6. General liability limit fields

Commercial general liability commonly separates each occurrence, damage to rented premises, medical expense, personal and advertising injury, general aggregate, and products/completed-operations aggregate. These are not interchangeable boxes. A requirement for $2 million each occurrence is not satisfied merely because another field displays a $2 million aggregate.

7. Auto, umbrella, and employer’s liability limits

Commercial auto may use a combined single limit or separate bodily-injury and property-damage values. Umbrella or excess liability has its own occurrence and aggregate fields. Employer’s liability commonly separates each accident, disease policy limit, and disease per employee, while workers’ compensation may be marked as statutory. Compare like with like. Do not add umbrella and underlying limits together unless the written requirement permits that structure and the agent confirms how the policies respond.

8. Indicators, descriptions, and remarks

Checkboxes or abbreviations may indicate that additional-insured or waiver provisions exist for a particular line. A description area may identify a project, location, or parties. Neither area should be treated as an independent policy amendment. The Texas Department of Insurance explains that certificate information cannot go beyond the related policy and ties additional-insured and waiver indicators to applicable endorsements.

9. Certificate holder

This block identifies the recipient of the certificate. Copy the legal name and address from the written instructions. Certificate-holder status alone does not make the recipient an additional insured. If the contract requests both roles, review the delivery block and the endorsement evidence as two different tasks.

10. Cancellation language and signature

Standard certificate language generally points back to policy provisions governing notice. Do not promise a client a particular notice period based only on a request. The authorized representative area helps identify the issued document, but it does not turn unsupported statements into coverage. Questions about authenticity should go directly to the producer using independently confirmed contact information.

A practical review workflow

Red flags that deserve a follow-up

• The legal name on the contract and named-insured field differ.
• A policy expires before work starts or during the planned project.
• A required line is absent or appears only in an unexplained “other” section.
• The required and displayed values refer to different limit types.
• The certificate indicates additional-insured status but the requested endorsement copy is missing.
• The holder block contains a different entity or address than the current instruction.
• The description promises contract compliance or policy terms that need agent confirmation.

Frequently asked questions

Does a certificate prove that my contract is fully insured?

No. It summarizes selected information. Contract compliance and coverage depend on the policy, endorsements, facts, jurisdiction, and the actual requirement.

Can I rely on a checked additional-insured box?

Treat it as an indicator to verify. Ask which policy provision or endorsement applies and provide a copy if the requester requires one.

Should I send a certificate containing policy numbers through an online checker?

Use a secure approved channel for insurance documents. COI Workbench tools intentionally ask you to type only the comparison values or administrative answers needed for the task.

What should I do if a field is unclear?

Mark it as unresolved and ask the issuing agent. Guessing can turn a simple question into a rejected submission.

Sources and limits

• Texas Department of Insurance: Certificates of Insurance FAQ
• New York Department of Financial Services: Certificates and Endorsements
• King County: Contract Insurance Requirements

This guide is general educational information, not insurance, legal, or compliance advice. Certificate forms, contracts, and state rules vary.