Audit-Based vs Fixed Premium: Which Pricing Model Works for Your Roofing Company?
Insurance premiums for roofing contractors are typically calculated based on your annual revenue (for GL) and payroll (for workers comp). The question is whether that calculation happens once with a guaranteed number or twice -- once at inception as an estimate and again at year-end as a final audit. This distinction affects your cash flow, your budgeting, and potentially your financial stability if a large audit bill arrives unexpectedly.
How Audit-Based Premiums Work
With an audit-based policy, your agent and carrier estimate your premium at the beginning of the policy period based on your projected annual revenue and payroll. If you estimate $800,000 in revenue and $350,000 in payroll, your GL and workers comp premiums are calculated on those numbers. You pay monthly or quarterly installments based on this estimate throughout the year.
After the policy period ends, the carrier conducts an audit. An auditor may visit your office or request financial documents including tax returns, payroll reports, and 1099 records. They compare your actual revenue and payroll to the estimates. If your actual numbers are higher than estimated, you owe additional premium. If they are lower, you receive a credit or refund.
For a roofing company that estimated $800,000 in revenue but actually did $1,200,000 due to a busy storm season, the audit adjustment could be substantial. If your GL rate is $12 per $1,000 of revenue, the additional $400,000 in revenue means an additional premium of $4,800. For workers comp at $25 per $100 of payroll, an extra $100,000 in payroll means another $25,000 in premium. A combined audit bill of nearly $30,000 arriving months after the policy year ends can be a serious cash flow hit.
How Fixed Premium Policies Work
A fixed-premium policy sets your premium at inception and guarantees it will not change for the policy period. There is no year-end audit, no document submission, and no surprise bills. You pay the agreed amount and that is the end of it.
Carriers offering fixed-premium policies account for the uncertainty by building a cushion into the rate. Expect to pay 15% to 30% more than the equivalent audit-based estimated premium. For a roofer whose audit-based GL would be $6,000, a fixed-premium GL might cost $7,500 to $8,000. For workers comp, the difference can be even more significant because payroll is harder to predict and workers comp premiums are larger in absolute terms.
Fixed-premium policies are less common in the roofing market than audit-based policies. They are typically offered by specialty carriers, pay-as-you-go programs, or surplus lines insurers. The coverage itself should be equivalent, but review the policy carefully. Some fixed-premium programs use less favorable policy forms or include more restrictive exclusions than standard market audit-based policies.
The Audit Process: What to Expect
If you have an audit-based policy, understanding the audit process helps you prepare and avoid surprises. The carrier will typically request your annual tax return, quarterly payroll reports, 1099 payment records for subcontractors, and a breakdown of revenue by type of work. For roofing contractors, the auditor will want to classify your revenue by residential vs commercial, new construction vs re-roofing, and any non-roofing work like gutters or siding.
One area where roofers often get caught is subcontractor payments. If you pay a subcontractor who does not carry their own workers comp or GL insurance, the auditor will add their payments to your payroll for premium calculation purposes. A $200,000 payment to an uninsured sub crew becomes $200,000 in additional payroll exposure on your audit, which at $25 per $100 adds $50,000 to your workers comp bill. Always verify that your subs carry their own insurance and keep their COIs on file. This is one of the most expensive audit mistakes roofing contractors make.
Pay-As-You-Go: A Middle Ground
Some carriers and payroll companies offer pay-as-you-go workers comp programs that calculate your premium based on each pay period's actual payroll. Instead of one large estimate at the beginning and an audit at the end, your premium adjusts in real time as your payroll fluctuates. This approach reduces the risk of a large year-end audit adjustment while keeping premiums tied to actual exposure.
For roofing companies with seasonal fluctuations, pay-as-you-go can be ideal. You pay more during busy summer months when payroll is high and less during slow winter months. The year-end audit, if one is still conducted, results in a minimal adjustment because the premiums have been tracking actual payroll all along.
Which Model Is Right for Your Roofing Business?
If your revenue and payroll are predictable and you maintain good financial records, an audit-based policy gives you the best rate and the most carrier options. Estimate conservatively -- slightly above your actual expectation -- to minimize the chance of a large audit bill. If you are a storm restoration company that can go from $300,000 to $1.5M in revenue depending on whether a hurricane hits, or a rapidly growing company adding crews throughout the year, a fixed-premium or pay-as-you-go policy provides the budget certainty you need.
Many roofing contractors start with audit-based policies when they are small and predictable, switch to fixed or pay-as-you-go as they grow rapidly, and then return to audit-based once their growth stabilizes and they have the financial infrastructure to manage audits effectively. Discuss your growth trajectory and cash flow constraints with your agent to choose the model that fits your current situation.