Premium Audits Explained: A Guide for Hawaiʻi Businesses
Reading Time: 4 - 5 Minutes
Key Takeaways
Premium audits are a standard requirement of some commercial insurance policies, not necessarily a sign of concern or investigation.
Auditable commercial insurance policies start with estimated premiums based on projected business activity, which the audit verifies against actual figures at the end of the policy term.
The final audit reconciles estimated amounts with actual business activity and may result in a refund if your actual figures were less than your estimated amounts, or an additional premium if your business activity is beyond initial estimates.
Keeping detailed and organized financial records will help to make the audit process straightforward and less stressful.
Disclaimer: This article provides general educational information only and should not be considered professional advice or a recommendation for specific coverage. All scenarios, characters, and dollar amounts are fictitious and do not represent any actual individuals, events, or premium audits. Insurance needs vary based on individual circumstances. Readers should consult with qualified insurance professionals for personalized guidance. This content does not constitute an offer to sell insurance or guarantee coverage availability.
If you own a business in Hawaiʻi and receive a notice about a premium audit from your insurance company, you might wonder what it means. Is something wrong? Am I in trouble?
The answer is simple: premium audits are a normal condition of some commercial insurance policies. They help make sure both you and your insurance company are on the same page about your actual exposures and associated premium costs.
Think of it this way: when you first buy a policy, the insurance company estimates your premium based on what you tell them about your business operations for the upcoming policy period. At the end of the policy period, the audit checks those estimates against what your business actually generated. This ensures that your insurance coverage properly reflects the size and scope of your business operations, while also confirming you are paying the correct premium for the coverage provided.
What Is a Premium Audit?
A premium audit is a review of your business’ financial records to verify the premium you paid was correct [1]. When you purchase commercial insurance, the initial premium is typically based on estimates like projected payroll, anticipated sales, or expected number of employees. Since these are just predictions, the actual numbers can differ once the policy period ends.
The audit compares your actual business data with the initial estimates. This process is most common for workers' compensation and general liability insurance policies, where premiums are calculated based on factors that can change throughout the year.
Are Premium Audits Fair?
Premium audits follow standardized rules, not arbitrary guidelines created by individual insurance companies. Most workers' compensation audits are governed by the National Council on Compensation Insurance (NCCI), while general liability audits follow standards set by the Insurance Services Office (ISO) [2]. These organizations establish uniform classification codes and rating formulas that many insurers in Hawaiʻi follow, ensuring consistency and providing a framework for resolving disputes fairly.
Why Premium Audits Are Required
The conditions of the insurance policy allow the insurance company the right to conduct a premium audit, as premiums are based on actual risk exposures. More employees, higher payroll, or greater sales volume means more exposure to potential claims. Because business conditions change during a policy period, initial estimates may not reflect reality.
In Hawaiʻi, all workers' compensation policies are subject to an audit [3]. This protects both businesses and insurance companies by preventing premium overpayment based on inflated estimates and underpayment when businesses grow beyond projections.
Consider a restaurant in Waikīkī that estimated having 15 employees at the start of the year. If seasonal fluctuations brought in more business and they needed to hire 10 more servers and kitchen staff, their payroll and exposure to workplace injuries increased. The audit ensures that the premium reflects this higher level of risk.
Types of Policies Subject to Audit
Several types of commercial insurance policies typically include premium audits:
Workers' Compensation Insurance: Premiums are based on payroll, so any changes in your workforce or wages will affect your final premium.
General Liability Insurance: For many businesses, general liability premiums are calculated based on exposures like sales, payroll, gallonage, student count, number of employees, or square footage. If these factors change, your premium may need an adjustment.
How the Audit Process Works
The audit process begins after your policy expires and you can expect to receive notification shortly after your policy end date. The audit notification will explain what documents and information you need to provide and the deadline for submission.
There are three main types of audits:
Voluntary Audit: The insurance company will contact you either online or via mail with audit forms that will require your completion and return, along with any supporting documents requested.
Hybrid/Physical Audit: An auditor contacts you by phone, email or visits your business location to review your records and may ask questions about your overall business operations and job duties of your employees. You provide information verbally and may need to provide additional supporting documents.
Arbitrary Audit: A lack of response or non-compliance to an audit may result in an arbitrary audit surcharge on the policy premium determined by the insurance carrier. Non-compliance audits could also jeopardize renewal of your insurance coverage.
Regardless of the audit type, you will need to provide verification documents. For workers' compensation and general liability, this typically may include:
Payroll records for the policy period
Quarterly federal tax returns (Form 941 or UC-B6)
Annual wage and tax statements (W-2 and 1099 forms)
Certificates of insurance for utilized subcontractors
Profit & Loss, Income Statement or sales summary
General ledger or financial statements
Once you submit the required information, the auditor reviews it and calculates your actual premium. The timeline of completion can vary based on the complexity of your policy and businesses, and how quickly you provide complete documentation.
Premium Adjustments: What to Expect
After the audit, one of three outcomes will occur:
Additional Premium Owed: If your actual business activity exceeds your initial estimates, you will receive a bill for the additional premium. This commonly happens when businesses experienced growth, hired more employees, or increased sales beyond projections.
Return Premium (Refund): If your actual activity was less than estimated, subject to any minimum premiums, you may receive a refund. This might happen if you had fewer employees than expected or if your sales were lower than projected.
No Change: If your estimates were accurate, no adjustment will be necessary, and the audit may be waived.
Let's look at a simple hypothetical example. Suppose you own a small construction company in Hilo. You estimated a payroll of $150,000 when purchasing workers' compensation insurance, and your initial premium was $9,000 based on a rate of $6.00 for every $100 of payroll. At audit time, your actual payroll was $180,000. The auditor calculates that your actual premium should have been $10,800 ($180,000 divided by $100 multiplied by $6.00), so you would owe an additional $1,800 ($10,800 minus $9,000).
Conversely, if your actual payroll was only $120,000, your premium should have been $7,200, and you would receive a $1,800 refund ($9,000 minus $7,200), subject to any minimum premium charges.
If you disagree with the audit findings, you have the right to dispute them with the insurance company and request a revision.
Final Thoughts
Premium audits are a standard part of some commercial insurance policies designed to ensure equitable pricing for both businesses and insurance companies. While the process might seem daunting at first, understanding what to expect and staying organized can make it straightforward.
Remember, an insurance audit is not an investigation or a sign that something is wrong. It is simply a way to verify that your final premium accurately reflects your actual business activity. By keeping good records, properly classifying employees, and communicating with your insurance agent and provider, you can navigate the audit process with confidence.
If you have questions about your upcoming audit, reach out to your local independent insurance agent.
Frequently Asked Questions
A premium audit is a review of your business' financial records to verify that the insurance premium properly reflects your operations and exposures.
You can expect to receive notification of an audit shortly after your policy end date, typically within 20 to 90 days after your policy expired or has been canceled.
You will typically need payroll records, quarterly federal tax returns (Form 941), annual wage and tax statements (W-2 and 1099 forms), certificates of insurance for subcontractors, and general ledger or financial statements.
Yes, if your actual business activity was less than estimated, you may receive a refund subject to minimum premiums and rating rules.
Yes, if your actual business activity was greater than estimated, you will owe additional premiums.
Yes, most workers' compensation audits are governed by NCCI and general liability audits follow ISO standards, ensuring consistency and fairness in risk assessment across insurers.
Sources
Insureon. "Premium Audit." Insurance Glossary. https://www.insureon.com/insurance-glossary/premium-audit. Accessed February 11, 2026.
National Council on Compensation Insurance (NCCI). "Premium Audit Overview." https://www.ncci.com/. Accessed February 11, 2026.
Hawaii Department of Labor and Industrial Relations, Disability Compensation Division. "Workers' Compensation." https://labor.hawaii.gov/dcd/. Accessed February 11, 2026.
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