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📄 '''Reliance letter''' is a formal authorization issued by a professional advisor — typically an [[Definition:Actuary | actuary]], auditor, or consultant — permitting a specified third party to rely on a report or opinion that was originally prepared for a different client. In the insurance industry, reliance letters arise most frequently in the context of [[Definition:Mergers and acquisitions (M&A) | M&A]] transactions, [[Definition:Initial public offering (IPO) | IPOs]], and [[Definition:Reinsurance | reinsurance]] arrangements, where a buyer, investor, or counterparty needs assurance that an [[Definition:Actuarial report | actuarial report]] on [[Definition:Loss reserves | reserves]], an [[Definition:Embedded value | embedded value]] analysis, or a [[Definition:Due diligence | due diligence]] report can be treated as authoritative for their decision-making purposes. Without a reliance letter, the third party generally has no legal standing to claim reliance on the work product if it proves flawed.

🔧 The mechanics are deceptively simple but legally consequential. The original engagement letter between the advisor and its client typically limits the audience for the report. When a third party — say, an acquiring company purchasing a [[Definition:Run-off | run-off]] book, or a [[Definition:Reinsurer | reinsurer]] evaluating a [[Definition:Loss portfolio transfer (LPT) | loss portfolio transfer]] — requests access, the advisor drafts a reliance letter that extends certain protections to the new party while usually capping the advisor's aggregate liability and disclaiming responsibility for updates or changes in circumstances after the report's date. The scope of reliance is often narrowly defined: the third party may rely on the report's conclusions but not on underlying data that the advisor itself received from the client without independent verification. Negotiating these terms can be protracted, particularly in large transactions where multiple advisors — actuarial, legal, accounting — are each asked to issue reliance letters, and each firm's risk management policies impose different limitations.

⚖️ The practical significance of reliance letters in insurance transactions cannot be overstated. A buyer conducting due diligence on an insurer's [[Definition:Reserve adequacy report | reserve adequacy]] needs more than informal comfort — it needs a document that creates a duty of care from the actuary to the buyer, establishing a basis for a professional liability claim if the reserve analysis was negligently prepared. In jurisdictions such as the United States and the United Kingdom, courts have generally held that absent a reliance letter or equivalent privity, third parties cannot sue professionals for losses arising from reports they were never authorized to use. For [[Definition:Representations and warranties insurance (R&W insurance) | R&W insurance]] underwriters evaluating a deal, the availability and scope of reliance letters on key diligence reports directly influence pricing and coverage terms. As deal velocity increases and more insurance transactions involve cross-border elements, standardizing the reliance letter process — including through digital platforms that track which parties have been granted reliance and on what terms — is becoming an operational priority.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Due diligence]]
* [[Definition:Actuarial report]]
* [[Definition:Representations and warranties insurance (R&W insurance)]]
* [[Definition:Loss portfolio transfer (LPT)]]
* [[Definition:Reserve adequacy report]]
* [[Definition:Mergers and acquisitions (M&A)]]
{{Div col end}}

Definition:Reliance letter - Revision history

PlumBot: Bot: Creating new article from JSON