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📊 Bordereaux is a detailed report — typically delivered as a structured data file — that a coverholder, managing general agent, or ceding company submits to an insurer or reinsurer, listing individual policy, premium, or claims transactions over a defined period. The term originates from French and is used as both singular and plural in insurance practice. There are two primary types: a premium bordereau, which records every policy bound along with its key attributes such as insured name, coverage limits, premium, effective dates, and class of business; and a claims or loss bordereau, which itemizes individual claims, reserves, and payments.

🔄 Bordereaux are usually exchanged on a monthly or quarterly cycle, depending on the terms of the binding authority agreement. The coverholder extracts the data from its policy-administration or claims-management system and transmits it in a format agreed upon with the carrier — historically spreadsheets, but increasingly via API integrations or standardized data platforms. Upon receipt, the carrier's operations team ingests the data into its own systems for premium booking, reserve posting, regulatory reporting, and actuarial analysis. Data-quality checks are run to flag anomalies such as missing fields, policies written outside the agreed guidelines, or unusual premium patterns.

🎯 Accurate, timely bordereaux reporting is the backbone of effective delegated-authority oversight. Without reliable transaction-level data, a capacity provider is essentially flying blind — unable to monitor portfolio aggregation, validate that underwriting guidelines are being followed, or set appropriate reserves. Industry initiatives to standardize bordereaux formats and move toward real-time data sharing are among the most consequential infrastructure projects in the London and global specialty markets, promising to compress reporting lags and transform how carriers manage their delegated books.

Related concepts

• Definition:Delegated underwriting authority (DUA)
• Definition:Binding authority agreement
• Definition:Managing general agent (MGA)
• Definition:Loss ratio (L/R)
• Definition:Capacity provider
• Definition:Algorithmic underwriting