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📅 '''Locked-box date''' is the specific historical date as of which the target company's financial position is fixed for the purpose of calculating the purchase price in a [[Definition:Locked-box account | locked-box]] transaction structure. In insurance M&A, selecting the right locked-box date is a consequential decision because it determines the reference point at which [[Definition:Claims reserve | reserves]], [[Definition:Unearned premium reserve | unearned premiums]], [[Definition:Net asset value | net assets]], and regulatory capital are measured — and from which the economic risk and reward of the business effectively transfer from seller to buyer.

⚙️ The locked-box date is almost always set at a recent historical balance sheet date for which audited or management-verified accounts are available — typically a year-end or half-year reporting date. In practice, insurance transactions often use the most recent annual reporting date because that is when a full [[Definition:Actuarial valuation | actuarial valuation]] of reserves has been completed and, in many jurisdictions, when regulatory solvency returns have been filed. For targets reporting under [[Definition:International Financial Reporting Standards (IFRS) | IFRS 17]], the measurement of insurance contract liabilities at the locked-box date must follow the standard's prescribed methodology, which differs substantially from the approaches used under [[Definition:US GAAP | US GAAP]] or local statutory frameworks. Once set, the locked-box date creates two distinct periods that the deal documentation must govern: the pre-locked-box period (reflected in the fixed financial statements and priced into the deal) and the interim period between the locked-box date and [[Definition:Completion | completion]] (during which the seller covenants to operate the business in the ordinary course and not extract [[Definition:Leakage | leakage]]). A daily interest accrual or "ticker" compensates the seller for the buyer's benefit of receiving the business's earnings during this interim window.

💡 Choosing a locked-box date too far in the past creates risk for the buyer, because a longer interim period means more time during which the target's financial position can diverge from the snapshot — through adverse [[Definition:Loss development | loss development]], premium erosion, or unfavorable investment returns — without any adjustment to the price. Conversely, a very recent locked-box date may lack the rigor of audited financials, introducing quality concerns about the accounts on which the price is based. In insurance transactions involving [[Definition:Long-tail liability | long-tail]] lines of business, the sensitivity is particularly acute: [[Definition:Claims reserve | reserve]] estimates can move materially in a short period, and a locked-box date that coincides with a benign reserving environment may flatter the target's apparent value. Experienced buyers address this through robust [[Definition:Actuarial due diligence | actuarial due diligence]] focused on the locked-box date financials, supplemented by [[Definition:Warranty and indemnity | warranty]] protections and, increasingly, [[Definition:Warranty and indemnity insurance | W&I insurance]] policies that backstop the risk of misstatement in the locked-box accounts.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Locked-box account]]
* [[Definition:Locked-box completion statement]]
* [[Definition:Leakage]]
* [[Definition:Completion account]]
* [[Definition:Actuarial due diligence]]
* [[Definition:Claims reserve]]
{{Div col end}}

Definition:Locked-box date - Revision history

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