What Should Insurance Cost After You Buy a Business?

The right premium for the business you just bought is the one that matches its real exposures (payroll, revenue, vehicles, property values and claims history) at terms carriers will offer you as the new owner. There is no industry average to copy, and the seller's premium is a starting point, not a benchmark, because it was priced on the seller's numbers, the seller's history and sometimes the seller's coverage gaps. This guide is for new owners trying to tell whether the insurance line in their model is about right, too high or dangerously low.

The short answer

Insurance cost as a share of revenue varies widely by industry and by the mix of policies, so a generic average tells you little about your company.
Each policy is priced on its own drivers: payroll and class codes for workers' compensation, revenue or payroll for general liability, vehicles and drivers for auto, insured values for property.
Test the inherited premium by checking whether the numbers on each policy match what you saw in diligence, then by asking the market.
Expect the price to move after a change in ownership: the seller's claims history usually follows the business, and underwriters re-rate new owners and corrected exposures.

Why is there no average premium to compare against?

Two companies with the same revenue can have very different insurance bills. A 40-person field services company with a fleet of trucks carries workers' compensation, auto and general liability exposures that a 40-person software company mostly does not. Even inside one industry, the state you operate in, your claims history, your contracts and the limits you buy move the number a lot.

That is why this guide does not give you an average premium or a "normal" percentage of revenue. Any such figure would be either too broad to use or wrong for your company. The library's cost guides, such as general liability cost and workers' compensation cost, explain the pricing factors line by line. For the business you just bought, the useful question is narrower: is this premium right for these exposures?

The good news is that you already hold most of the data needed to answer it. Your diligence file has the payroll, revenue, vehicle list and asset values that carriers price on.

What actually drives the price of each policy?

Each policy is rated on its own exposure base. The table shows the usual drivers and what to compare in the policies you inherited. Carriers vary, so treat this as a map, not a formula.

What usually drives premium, line by line
Policy	Usually priced on	What to check in what you inherited
Workers' compensation	A rate per $100 of payroll for each class code (based on rates or loss costs filed in your state), times the payroll in that class, multiplied by the experience mod, then adjusted by any carrier credits or debits, premium discount and fees	Payroll estimate vs actual payroll; class codes vs the work people really do; the current mod
General liability	Revenue, payroll, square footage or units, depending on the business class; claims history; limits	The exposure figure on the declarations vs actual revenue or payroll; the business description and class
Commercial auto	Number and type of vehicles, drivers and their records, how far and where vehicles travel, limits	Vehicle schedule vs the real fleet; drivers listed vs current drivers
Commercial property	Insured values, building construction and age, fire protection, location, deductibles	Limits vs current replacement cost; the valuation basis; the coinsurance percentage
Umbrella or excess	The underlying policies' exposures, the limit purchased, the industry	Whether every underlying policy is scheduled; whether the limit meets contract requirements
Professional, cyber, employment practices	Revenue, headcount, controls (for cyber), claims history, retroactive date	Revenue and headcount on the application vs today; the retroactive date

Two drivers deserve special attention after an acquisition. First, the experience mod (a factor that raises or lowers workers' compensation premium based on past claims) usually transfers to the buyer, even in an asset purchase into a new company. Smaller businesses may not have a mod at all, and rating rules vary by state: California, Pennsylvania and Delaware use their own class systems, and in North Dakota, Ohio, Washington and Wyoming workers' compensation must be bought from the state fund. Second, payroll and revenue on the policies are estimates; workers' compensation and many general liability policies are audited after the policy ends, and the final premium is based on actual figures. Low estimates make the inherited premium look cheaper than it really is.

How do I test whether the inherited premium is reasonable?

Work through these steps in order. You can usually handle the first five yourself from your diligence file.

Build a premium schedule. One row per policy: carrier, annual premium, rating basis, the exposure figure the premium is based on, deductible, limits and renewal date. Include taxes and fees.
Track your own ratios. For the seller's last three to five years, divide total premium by revenue, and workers' compensation premium by payroll. If the business grew while those ratios fell, ask whether the exposures on the policies were ever updated. If a ratio jumped, look for a large claim, a new line or a market reprice. Your own trend line is a better benchmark than an industry average.
Compare exposures to reality. Put the payroll, revenue, vehicle count and property values from diligence next to the figures on the policies. Large differences in either direction are the first sign the price is off.
Read the audit history. Ask for the last two or three workers' compensation and general liability premium audits. Repeated additional premium bills mean the estimates were low; repeated refunds mean the business may have been overpaying cash up front.
Check the class codes and mod. Payroll in the wrong class code can lead to overpaying or underpaying, and the difference often surfaces at audit. See class code corrections and how to check the mod for errors.
Read the loss runs. Frequent small claims or one large open claim will shape what carriers charge you. See how to read loss runs.
Compare coverage, not only price. A low premium with low limits, a high deductible or missing endorsements is not cheaper coverage; it is less coverage.
Ask the market. A broker's review or a remarket (asking other carriers to quote) at renewal shows what carriers are willing to offer a new owner based on current information. In the four state-fund-only states, workers' compensation cannot be shopped to private carriers. A quote is not coverage, and its terms can change until a carrier binds the policy.

Why might the seller's price not hold after I take over?

Buyers are often surprised when the first renewal, or the first quotes for a new entity, come in above what the seller paid. Common reasons:

The exposures were understated. Payroll or revenue on the policies lagged the real business, so the old premium was based on a smaller company. The difference often shows up later as an audit bill.
The seller was underinsured. Low limits, values that never kept up with replacement costs, or a missing line (no umbrella, no cyber) make the old premium look low. Fixing those adds cost. See was the seller underinsured?
The claims history comes with the business. A new LLC does not wipe the slate clean. Under the National Council on Compensation Insurance (NCCI) rules used in many states, an asset purchase where you take over the operations is still an ownership change, and the seller's workers' compensation experience usually transfers.
Underwriters re-rate a new owner. A new entity or a change in control gives carriers a reason to re-underwrite, and your own industry experience is part of the picture.
New requirements arrive. Your lender, a key customer or your lease may require limits, endorsements or lines the seller did not carry.
The market moved. Some lines and industries reprice at renewal regardless of who owns the company.

The reverse also happens. A seller who never shopped the program, carried coverage for equipment long gone, or had payroll in the wrong class codes may have been overpaying.

Can the premium come down instead of up?

Sometimes. When it does, the reduction usually comes from fixing errors rather than cutting coverage you need. Common sources after an acquisition include:

Corrected class codes
Removing vehicles, drivers and equipment the business no longer has
Dropping duplicate coverage
Deductibles that fit your cash position
Remarketing an account at renewal, especially one that has not been shopped in years

How to reduce insurance costs after you buy a business covers each one. No carrier promises a lower price, and a lower price that comes with weaker coverage can cost more after a single claim.

How should the real cost show up in my model?

The premium is only part of what insurance costs the business. Budget for premiums with taxes and fees, expected deductibles, likely audit adjustments and the deposit due at inception.

Quality of earnings providers sometimes normalize insurance cost over the historical period. If the business will need a different program than the seller carried, the go-forward cost can differ from the historical expense, which matters for earnings before interest, taxes, depreciation and amortization (EBITDA). Getting realistic quotes before or soon after closing keeps the model honest. See budgeting insurance in your acquisition model and insurance in your quality of earnings review.

A hypothetical example. A buyer acquires a regional services company with $10 million of revenue. The seller's total premium was $180,000. Checking the policies against diligence, the buyer finds three problems. The workers' compensation policy assumes $2.4 million of payroll, but actual payroll is $3.1 million. The general liability policy is rated on $8 million of revenue, not $10 million. And there is no umbrella, even though the largest customer contract requires $5 million of liability limits. The $180,000 was never the real cost of insuring this company. The buyer budgets for a higher go-forward premium, sets aside cash for a possible audit bill on the seller's last policy term (who pays depends on the deal structure and purchase agreement), and tells the board why the insurance line moved. These figures are illustrative only and are not a benchmark for any industry.

What should I ask my broker about price?

What exposure figure is each policy rated on, and does it match our current numbers?
Are the class codes right for the work our people actually do?
What is our experience mod, and how will the ownership change affect it?
What did the last audits show, and do we have an audit bill coming?
Which parts of the premium come from limits or lines our contracts require, and which are optional?
Which policies are worth remarketing at renewal, and how much lead time do you need?
What deductibles would fit our cash position and lender covenants?

If you want a second opinion on whether the price fits, Morrow can line up the exposure figures on each policy against your diligence numbers and request quotes where it makes sense; actual pricing depends on carrier underwriting. For how premiums are built in general, see how commercial insurance premiums are calculated.

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Frequently asked questions

Is business insurance usually a set percentage of revenue?

No. Insurance cost as a share of revenue varies widely by industry, state, claims history, the limits you buy and which policies you need. A field services company with trucks and a large crew will usually pay far more per dollar of revenue than an office-based company. Judge your premium against your own exposures instead.

The seller paid much less than my quotes. Was the seller getting a deal?

Possibly, but check first whether the seller's policies were rated on old payroll or revenue figures, carried lower limits, or left out coverage your lender or customers now require. A low premium built on understated exposures often comes back as an audit bill.

Will my premium go up just because the business changed hands?

Not automatically, but a change in ownership often leads to re-underwriting. The seller's workers' compensation claims history usually transfers to you, and carriers will look at you as the new owner. Corrections to understated exposures can raise the price, while fixing misclassified payroll or removing old vehicles can lower it.

Can I lower the premium right after closing?

Some savings can be made mid-term, such as removing vehicles you no longer have or correcting class codes. Larger changes, like moving to a new carrier, often make more sense at renewal because cancelling early can cost money. No broker can promise a lower price; carriers set it.

Should I trust online insurance cost averages for my company?

Use them only as background. Averages blend very different businesses and rarely match an acquired company's payroll, fleet, claims history or contract requirements. The figures on your own policies and quotes based on your real exposures are far more useful.

References

Just bought a business? Get your insurance reviewed.

Send Morrow the declarations pages, loss runs and key contracts you inherited. Morrow can review them against the business you bought, flag gaps and request quotes where it makes sense. Any new terms depend on carrier underwriting.

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This article is general information, not legal, tax or financial advice, and not a coverage determination. Coverage depends on the actual policy wording, carrier underwriting, your purchase agreement and your contracts. Ask your attorney and accountant about deal and legal questions.

How Much Should Insurance Cost for the Business I Just Bought?