What are general liability class codes?

General liability (GL) class codes are numerical codes used by insurers to categorize businesses based on their operations and risk level, which helps determine general liability insurance premiums and coverage.

Knowing how insurance classification codes work can provide insight into how insurers evaluate businesses and calculate insurance costs.

How do general liability class codes work?

When you apply for general liability insurance, insurers review the type of work you do and assign class codes that reflect your operations. GL class codes create a standardized way to classify businesses with similar risks.

Once assigned, general liability class codes help insurers:

  • Classify your business during underwriting and align coverage with your work
  • Determine your insurance cost
  • Provide context about your business when evaluating claims
  • Guide policy reviews and adjustments as your business changes
  • Support consistent evaluation of similar businesses

Depending on the work you do, your insurer may assign multiple class codes for general liability to reflect different parts of your business.

Who assigns general liability insurance class codes?

General liability class codes are usually assigned by your insurer during the underwriting process. The information you provide helps classify your business and assign a code that reflects the work you perform, including details about your:

  • Industry
  • Type of work
  • Years in business
  • Number of employees
  • Revenue and payroll
  • Business location
  • Claims history

How GL class codes affect your insurance costs

General liability class codes are one factor insurers use to calculate your premium. Each code reflects a different level of risk, and higher-risk work typically costs more to insure because claims may happen more often or be more expensive.

We'll help you understand these classifications so you can choose coverage that fits how you actually work. Start a quote for general liability insurance to see how much a policy could cost for your business.

Insurance class code examples

General liability class codes are typically five-digit numbers used to classify businesses based on their work and level of risk. Even within the same industry, businesses may have different codes.

Here are some common business categories and how differences in risk can affect classification:

Retail and wholesale businesses

Retail and wholesale businesses are classified based on factors like the products they sell, sales volume, and number of employees.

Example: A small clothing shop (11127) may have lower risk than a hardware store (13716) selling tools and industrial equipment.

Contractors and trades

There are dozens of class codes for contractors and trade workers that are related to specific types of jobs, services, and industries.

Example: Roofing contractors are classified depending on whether they work on buildings with three stories or fewer (98678) or buildings with more than three stories (98677).

Service-based businesses

Businesses that provide services at customer locations or use specialized equipment may have higher risk than those working in more controlled environments.

Example: The risks facing a pool cleaning business (99505) working around water, chemicals, and equipment may be greater than those of a photographer (16471) working in a studio.

Professional and office-based businesses

Professional and office-based businesses may have different classifications depending on where they work and how they interact with clients.

Example: A lawyer (66122) working in an office may face different risks than a real estate agent (47050) who shows houses and transports clients.

Restaurants and food service

Restaurants are classified based on what they offer and how food is prepared and served.

For example, a restaurant may be categorized as:

16900: Restaurants with table service but no alcohol

16901: Restaurants with seating but no alcohol and no table service

16902: Restaurants with no alcohol and no seating

16910: Restaurants with table service and alcohol sales under 30% of annual receipts

Restaurants aren't the only businesses with specialized classifications. Explore commercial insurance options by profession to learn more about coverage and insurance requirements for your industry.

What happens if your business is misclassified?

If your business is assigned the wrong business insurance class code, it can affect both your coverage and costs. Since class codes help insurers evaluate risk and price coverage, misclassification can lead to:

  • Incorrect premiums: You could end up paying too much or too little for your coverage.
  • Claim issues: Your policy may not accurately reflect your business operations.
  • Audit adjustments: You may owe additional premiums or receive a refund for overpayments.
  • Policy changes: Inaccurate classifications may require updates to your policy.

Review your policies regularly and notify your insurer if your business operations change to help ensure your classification remains accurate.

GL class codes vs. other business classification systems

The Insurance Services Office (ISO) develops standardized GL class codes that are often used as a starting point when classifying businesses. Insurers may also use their own classification systems or adjust codes based on a business's specific operations.

In addition to GL class codes, you may see other classification systems used across insurance and business reporting:

Frequently asked questions about general liability class codes

What are general liability insurance class codes?

How do I know if my GL classification codes are correct?

Why did my insurance company change my class code?

Are general liability class codes standardized?

How do class codes affect insurance cost?

Can a business have more than one class code?

What happens if my class code is wrong?

How do I find my insurance class code?

Why choose Progressive Commercial for general liability

Progressive Commercial has over 50 years of experience helping business owners find coverage that fits their operations. With flexible policy options and support from licensed agents, you can get general liability insurance that meets your needs.

When you get a quote online, you can explore options at your own pace and get your insurance rate in minutes. Prefer to talk it through? Call our insurance experts for additional support.