know what insurance could cost after an acquisition.

Start with the evidence

what does the seller actually pay?

Start with policies, premium invoices, claims history, and premium audits. Then reconcile those records to the insurance expense in the financials for the same period.

An invoice and an expense account can tell different stories. Audit adjustments, financing charges, prior-period items, or an allocation from a parent company may explain the difference. Find out before you carry the number into your model.

The carveout distinction is also addressed in Aon’s insurance diligence overview. That source describes general methodology, not US policy or tax rules.

budget for the business you’ll own.

Will it keep its own policies or join an existing program? What changes in payroll, revenue, locations, vehicles, or services? Are the lender’s requirements different from the seller’s current coverage?

Build the post-close estimate around those answers. Claims history, limits, deductibles, insurer terms, and any coverage being added or replaced can all change the result.

• Identify what continues, what changes, and what needs replacement.
• Record whether each number is an invoice, an estimate, or an insurer quote.
• Keep the date, assumptions, and unresolved underwriting questions beside it.

A budget estimate helps you plan. It is not confirmation that coverage is bound. Marsh’s diligence methodology likewise separates post-close cost projections from transaction-specific costs.

Follow the dollars

a $24,000 difference worth understanding.

Suppose Project Juniper, a fictional business-services acquisition, keeps the same operations. Its assumed post-close insurance budget is higher than the seller’s annual premium.

Seller’s annual premium

$144,000

Assumed buyer budget

$168,000

Annual difference

+$24,000to investigate, not an automatic adjustment

The additional $24,000 a year belongs in the forecast conversation. It is not automatically an EBITDA adjustment. Your quality-of-earnings team needs to reconcile what is already expensed, the relevant period, and the evidence behind the new estimate.

For scale only: at an assumed 8× multiple, a $24,000 annual earnings difference represents $192,000 of modeled enterprise-value sensitivity, with all other assumptions held constant. That is arithmetic, not a valuation conclusion or an agreed price reduction.

For the model and the QoE conversation

give the earnings team evidence, not an automatic adjustment.

Use one bridge from recorded insurance expense to the proposed post-close budget. Keep the period and entity consistent. Separate a timing difference from a change in annual cost, and a quoted number from an underwriting assumption.

Ask the accounting team to identify premium accruals, audit true-ups, financing charges, recoveries, and any parent allocations already in the financials. A lower seller limit or missing coverage may change the buyer’s budget. It does not establish the size or treatment of a QoE adjustment by itself.

• Recorded expensePeriod, entity, ledger amount, and reconciliation to policies, invoices, audits, and accruals.
• Comparable recurring costItems the accounting team considers recurring, with any proposed normalization and supporting evidence.
• Buyer’s programChanged exposures, limits, structure, estimated cost, quote status, and unresolved underwriting.
• Separate transaction entriesTail, other deal expenses, collateral, payer, due date, and treatment to be confirmed by the relevant advisers.
• Conclusion and ownerWhat the broker confirmed, what the QoE adviser concluded, and which assumptions still need support.

Copy these headings into your workpapers. Keep accounting conclusions with the accounting adviser and policy conclusions with the qualified insurance reviewer. The bridge makes the handoff traceable; it does not replace either review.

don’t bury closing costs in the annual budget.

Some deals require tail coverage, transaction insurance, underwriting fees, or other deal-specific insurance expenses. Record them separately, with the amount, timing, responsible party, and evidence.

In the fictional example, assume a required tail is quoted at $24,000. Keep that separate from the $168,000 annual budget. Counsel should confirm the deal’s responsibility for the cost, and your accounting advisers should determine its treatment.

Representations and warranties insurance is a separate transaction-coverage question. Do not use it as a substitute for reviewing the business’s ongoing insurance needs.

Cash needed at close is a different question again.

Assume this same example also requires $30,000 of cash collateral. Alongside the $24,000 tail payment, that is $54,000 across those two cash items, not $54,000 of recurring insurance expense.

That is not a complete closing cash total. Ordinary premium payments, taxes, fees, financing, and other deal costs would need their own entries. If security is a letter of credit rather than cash, do not treat its face amount as cash paid. Track fees and the effect on borrowing capacity separately.

For collateral, confirm who posts it, who holds it, what obligations it secures, and the conditions for release. A number without those answers is not a complete cash plan.

give every finding a next step.

The useful output is not a list of insurance issues. It is a set of decisions your deal team can make before closing.

• The annual budget changes.Have the buyer, broker, and QoE adviser confirm assumptions, reconcile the seller’s expense, and decide what belongs in the forecast.
• A policy has change-of-control terms.Have the broker, insurer, and counsel confirm continuity, reporting requirements, and whether tail or replacement coverage is needed.
• The lender needs different coverage.Confirm the required terms and evidence with the lender. Resolve the difference before the closing deadline.
• Collateral or a payment is required.Confirm the amount, responsible party, due date, and release conditions. Put the item in the closing cash schedule.
• A key number is still an estimate.Identify what the insurer still needs to quote or bind. Give that task an owner and a deadline.