Some commercial policies begin with estimated payroll, sales, or another exposure measure and reconcile that estimate after the policy term. The premium audit determines the final exposure and may produce an additional charge or return premium.
- Describe your operations accurately
- Match limits, deductibles and policy forms
- Confirm requirements with a licensed professional
Some commercial policies begin with estimated payroll, sales, or another exposure measure and reconcile that estimate after the policy term. The premium audit determines the final exposure and may produce an additional charge or return premium.
Important: This guide provides general educational information, not legal, tax, or insurance advice. Requirements and policy terms vary. Consult a licensed professional about your situation.
Why audits happen
An estimated premium allows coverage to begin before the year’s final figures exist. At audit, the insurer applies policy rules and classifications to actual records. The process is common in workers’ compensation and may appear in liability policies.
Records to organize
Follow the auditor’s request and retain supporting records. Typical items can include payroll summaries, tax reports, general ledgers, sales records, certificates of insurance, subcontractor payments, job descriptions, and operations by location.
- Payroll by employee, duty, and state
- Overtime records where applicable
- Subcontractor payments and certificates
- Sales or revenue by operation
- Changes in ownership or services
Review the completed audit
Compare classifications, exposure totals, officer treatment, subcontractor handling, locations, and policy rates with your records. Ask for the audit worksheet and dispute instructions if something appears incorrect. Respond by the stated deadline and preserve documentation.
Prepare while the policy is active
The easiest premium audit is the one supported month by month. Keep payroll by employee and duty, subcontractor payments with certificates, sales by operation, and changes in ownership or location. Waiting until the audit request arrives often means reconstructing classifications from bank records and memory.
Compare actual exposure with the estimate during the year. If payroll or sales grows sharply, ask whether the policy can be endorsed. Paying part of the increase during the term may be easier than receiving one large final invoice.
Review the worksheet, not just the balance
An additional premium is not proof of an error, and a return premium is not proof the audit is correct. Request the worksheet and trace exposure totals, classifications, rates, officer treatment, and subcontractor charges back to records. Note where estimates or auditor assumptions were used.
If something appears wrong, follow the policy's dispute process and deadline. State the disputed item precisely and attach organized evidence. Keep paying undisputed amounts as professional advice recommends; ignoring correspondence can limit options.
Audit file checklist
Keep a copy of exactly what was supplied and how totals were calculated.
- Quarterly payroll reports and detailed ledgers
- Employee duties and work states
- Overtime detail where applicable
- Subcontractor invoices, contracts, and certificates
- Sales by operation and location
- Prior audit, current worksheet, and written correspondence
Reconcile exposure and organize records
Calculate the variance between estimated and actual exposure, then print a missing-document and auditor-question list.
Open the worksheetSources and further reading
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Research reviewed on August 2, 2026. Prices and requirements can change; this page does not provide a quote.