A Certificate of Insurance (COI) is one of the most commonly requested documents when businesses in the United States enter into contracts, lease commercial property, hire contractors, or provide services to other organizations.

If a customer or business partner asks you to “send your COI,” they are generally asking for documentation that summarizes your current insurance coverage. For many businesses, providing this document is a routine part of doing business.

However, a COI can be confusing if you have never dealt with one before. Business owners often wonder what information it contains, who issues it, whether it provides insurance coverage, and why a client needs it in the first place.

Understanding how a Certificate of Insurance works can help you respond to requests faster and avoid mistakes that could delay a project or contract.

What Is a Certificate of Insurance (COI)?

A Certificate of Insurance, commonly abbreviated as COI, is a document that provides evidence and summary information about insurance coverage.

A COI may identify:

• The insured business
• Insurance carrier
• Policy number
• Type of insurance
• Coverage limits
• Policy effective date
• Policy expiration date
• Certificate holder
• Description of operations

The document allows another party to review basic insurance information without necessarily receiving the business’s entire insurance policy.

For example, a commercial property owner may hire a contractor to repair a building. Before work begins, the property owner may ask the contractor for a COI showing appropriate liability insurance.

The certificate gives the property owner a convenient way to review the contractor’s stated insurance information.

Is a COI the Same as an Insurance Policy?

No.

This is one of the most important things for business owners to understand.

A Certificate of Insurance is generally a summary or evidence of insurance coverage. The actual insurance policy is the legal contract that establishes the applicable coverage, exclusions, conditions, definitions, and other provisions.

COI	Insurance Policy
Summarizes insurance information	Contains the complete insurance contract
Usually easier to review	Contains detailed terms and conditions
Often requested by clients and landlords.	Used to determine actual policy coverage
Does not generally create coverage	Establishes coverage according to its terms
May show policy limits and dates	Contains the full provisions governing those limits

A COI should therefore not be viewed as a replacement for the insurance policy.

Why Do Businesses Need a COI?

A Certificate of Insurance is often requested because another party wants evidence that your business carries appropriate insurance.

This can help organizations evaluate potential risks before entering into a commercial relationship.

For example, a company hiring a cleaning service may want to know whether the cleaning business has general liability coverage.

Similarly, a landlord may require a tenant to maintain certain insurance as part of a commercial lease.

Common Situations Where a COI Is Requested

A business may need to provide a COI when:

• Signing a commercial lease
• Starting work for a new client
• Working as a subcontractor
• Performing construction work
• Joining a vendor network
• Participating in an event
• Working at another company’s property
• Entering into a government contract
• Providing professional services
• Working with a general contractor

The exact insurance requirements depend on the contract and the nature of the business.

What Information Is Included on a COI?

A typical Certificate of Insurance contains several categories of information.

Named Insured

The named insured is generally the person or business whose insurance policy is being described.

For a company, this may be its legal business entity.

Business owners should check this carefully, particularly if they operate more than one company or use a DBA.

Insurance Producer

The producer section generally identifies the insurance agency, broker, or other insurance professional involved with the policy.

Insurance Carrier

The certificate identifies the insurance company providing the coverage.

A business can have multiple insurers for different types of insurance.

Policy Number

Each listed policy may have its own policy number.

This helps identify the applicable insurance policy.

Policy Period

The certificate generally shows the effective and expiration dates.

For example:

Effective: January 1, 2026
Expiration: January 1, 2027

This information helps a certificate holder determine whether the listed policy period is current.

Common Types of Coverage Listed on a COI

The coverage section depends on the insurance policies the business maintains.

Commercial General Liability

Commercial general liability, often called CGL, is one of the most commonly requested forms of business insurance.

Depending on the policy, it may address certain third-party claims involving:

• Bodily injury
• Property damage
• Personal and advertising injury
• Certain associated legal expenses

Coverage depends on the policy’s actual provisions.

Commercial Auto Liability

Businesses that use vehicles for business purposes may carry commercial auto insurance.

This can be relevant to:

• Delivery businesses
• Contractors
• Transportation companies
• Landscaping businesses
• Mobile service providers

Professional Liability

Professional liability insurance may be relevant to businesses that provide professional advice, services, or expertise.

Examples may include:

• Consultants
• Accountants
• Technology professionals
• Marketing agencies
• Designers

The risks covered depend on the specific policy.

Workers’ Compensation

Workers’ compensation requirements vary by state and can depend on factors such as the employer’s industry, number of employees, and business structure.

Where applicable, businesses may need to maintain workers’ compensation coverage.

Umbrella or Excess Liability

Umbrella or excess liability coverage may provide additional limits beyond certain underlying policies, depending on the policy’s terms.

Understanding COI Coverage Limits

Insurance limits are one of the first things a client may review.

For example, a contract might require:

$1 million per occurrence and $2 million general aggregate.

A certificate may show these limits.

Example COI Limit	General Meaning
$1,000,000 Each Occurrence	Example limit applying to an individual covered occurrence
$2,000,000 General Aggregate	Example overall policy-period limit for certain covered claims
$1,000,000 Auto Liability	Example commercial auto liability limit
$2,000,000 Umbrella	Example additional liability limit

These figures are examples only.

A COI should accurately reflect the limits in the underlying insurance policy.

What Is a Certificate Holder?

The certificate holder is generally the person or organization receiving the Certificate of Insurance.

For example, a construction company may provide a COI to a general contractor.

The general contractor may be listed as the certificate holder.

This allows the contractor to receive documentation showing the subcontractor’s insurance information.

Certificate Holder Does Not Mean Additional Insured

This distinction is extremely important.

Being listed as a certificate holder does not automatically make a person or organization an additional insured.

An additional insured may receive certain rights or coverage under an insurance policy when properly added in accordance with applicable policy provisions or endorsements.

Certificate Holder	Additional Insured
Receives the COI	May receive certain protection under the policy
Primarily receives evidence of insurance.	May require an endorsement
Does not automatically receive insured status	Rights depend on policy provisions.
Commonly included in certificate requests.	Often required by specific contracts.

If a contract requires additional insured status, ask your insurance agent or broker to review the requirement.

How to Get a Certificate of Insurance

Obtaining a COI is usually straightforward if your business already has the required insurance.

Step 1: Review the Contract

Start by identifying the insurance requirements.

Look for:

• Required insurance types
• Minimum limits
• Certificate holder information
• Additional insured provisions
• Waiver of subrogation requirements
• Other required endorsements

Step 2: Contact Your Insurance Agent or Carrier

Contact your insurance company, agent, or broker and explain that you need a COI.

Provide the contract requirements whenever possible.

Step 3: Give the Certificate Holder’s Information

Provide the exact name and address of the organization requesting the certificate.

Avoid guessing or changing the company’s legal name.

Step 4: Ask About Endorsements

If the contract requires additional insured status or another endorsement, tell your insurance professional.

A standard certificate may not be enough to satisfy the requirement.

Step 5: Review the Certificate

Before submitting the document, verify:

• Business name
• Insurance carrier
• Policy numbers
• Coverage types
• Coverage limits
• Effective dates
• Expiration dates
• Certificate holder

How Long Does It Take to Get a COI?

A straightforward certificate based on an existing policy may be available quickly, especially when the insurer or agent provides online certificate services.

Requests involving policy changes or endorsements may require additional processing.

For this reason, request your COI as soon as you receive the contract rather than waiting until the project starts.

Does a COI Cost Money?

In many situations, requesting a standard certificate from an existing insurance provider may not involve a separate fee.

However, you may incur additional insurance costs if the requesting party requires changes to your existing coverage.

For example, your business might need to:

• Increase liability limits
• Purchase another type of insurance
• Add an endorsement
• Add an insured

Those changes may affect your insurance premium.

The cost depends on your insurer, business operations, policy, and requested coverage.

Can You Create Your Own COI?

Businesses should not create an unofficial document and present it as proof of insurance.

An official Certificate of Insurance should be issued by an authorized insurance provider or professional and should accurately represent the underlying policy.

If a customer sends you a blank COI form, contact your insurance agent before completing or modifying it.

This is particularly important when the client requests specific insurance language.

Common COI Mistakes

Sending an Expired Certificate

A certificate showing an expired policy period may not satisfy a client’s requirements.

Always check the dates.

Using the Wrong Business Entity

Make sure the business named on the certificate is the entity actually covered by the policy.

Confusing Coverage Types

General liability, professional liability, commercial auto, and other policies address different risks.

Make sure you provide the type of coverage the contract actually requires.

Ignoring Endorsements

Some contracts require additional insured status or other policy provisions.

A basic certificate may not satisfy these requirements on its own.

Altering the Certificate

Do not manually change policy limits, dates, policy numbers, or other information.

If something is incorrect, ask your insurance provider for a corrected certificate.

COI Checklist for U.S. Businesses

Before sending a certificate, review this checklist:

Item	Check
Legal business name	✓
Insurance carrier	✓
Policy number	✓
Policy effective date	✓
Policy expiration date	✓
Required coverage types	✓
Required limits	✓
Certificate holder	✓
Additional insured requirement	✓
Other endorsements	✓
Description of operations	✓

Keeping this information organized can make future COI requests much easier.

When Do You Need an Updated COI?

You may need a new certificate when:

• Your insurance policy renews
• A new client requests proof of coverage
• A contract changes
• Coverage limits change
• The certificate holder changes
• You begin a new project
• A client requests current documentation

Businesses with many clients should consider maintaining a record of certificates and policy expiration dates.

Final Thoughts

A Certificate of Insurance (COI) is an important document for many U.S. businesses. It provides a convenient way to demonstrate basic information about existing insurance coverage when working with clients, landlords, contractors, vendors, and other organizations.

The process is usually simple: review the contract requirements, contact your insurance company or agent, provide the certificate holder’s information, request any necessary endorsements, and review the completed certificate before submitting it.

The most important thing to remember is that a COI is generally evidence or a summary of insurance coverage, not the insurance policy itself. The underlying policy and applicable endorsements determine the actual coverage.

Insurance requirements can differ by state, industry, contract, and business activity. If you are unsure whether your policy satisfies a particular requirement, consult a licensed insurance professional.

Keeping accurate insurance records and requesting updated certificates when needed can help your business avoid unnecessary delays and demonstrate that you are prepared to meet the insurance requirements associated with commercial opportunities.