https://www.insurerbrain.com/w/index.php?action=history&feed=atom&title=Definition%3ABurning_costDefinition:Burning cost - Revision history2026-05-04T06:50:29ZRevision history for this page on the wikiMediaWiki 1.43.8https://www.insurerbrain.com/w/index.php?title=Definition:Burning_cost&diff=10475&oldid=prevPlumBot: Bot: Creating new article from JSON2026-03-11T16:38:58Z<p>Bot: Creating new article from JSON</p>
<p><b>New page</b></p><div>🔥 '''Burning cost''' is an [[Definition:Actuarial science | actuarial]] and [[Definition:Reinsurance | reinsurance]] pricing metric that expresses historical [[Definition:Incurred loss | incurred losses]] as a proportion of [[Definition:Subject premium | subject premium]] or exposure over a defined period, providing a baseline for estimating what a layer of coverage has actually "cost" in pure loss terms before any loading for expenses, profit, or risk margin. In reinsurance negotiations, it serves as a foundational data point: both [[Definition:Cedent | cedents]] and [[Definition:Reinsurer | reinsurers]] examine the burning cost to anchor discussions about the appropriate [[Definition:Reinsurance premium | rate]] for excess-of-loss treaties and similar structures.<br />
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📊 Calculating the burning cost involves dividing the total losses that penetrate a specific [[Definition:Retention | retention]] or [[Definition:Attachment point | attachment point]] by the total subject premium base, typically computed across multiple underwriting years to smooth volatility. For example, if a [[Definition:Cedent | cedent]] cedes losses above $5 million per occurrence and total losses piercing that layer over five years amount to $12 million against $200 million in cumulative subject premium, the burning cost is 6%. Analysts often adjust historical figures using [[Definition:Loss development factor | loss development factors]] and [[Definition:Trend factor | trend factors]] to bring past experience to a current-year cost level, accounting for [[Definition:Claims inflation | claims inflation]] and changes in exposure. The result is a "trended and developed" burning cost that more accurately reflects the expected future loss rate for the layer in question.<br />
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📈 As a pricing tool, the burning cost carries particular weight because it is grounded in actual loss experience rather than theoretical models alone. However, experienced [[Definition:Reinsurance broker | reinsurance brokers]] and underwriters recognize its limitations — it can understate risk in periods of benign loss activity and may not capture emerging [[Definition:Catastrophe risk | catastrophe]] or [[Definition:Systemic risk | systemic risks]] that historical data simply hasn't recorded. For this reason, reinsurers typically treat the burning cost as a floor or starting point, layering on [[Definition:Risk load | risk loads]], [[Definition:Expense load | expense margins]], and adjustments informed by [[Definition:Catastrophe model | catastrophe models]] or forward-looking exposure analysis. In today's market, [[Definition:Insurtech | insurtech]] platforms are automating burning cost calculations by integrating real-time [[Definition:Bordereaux | bordereaux]] data and [[Definition:Loss run | loss runs]], reducing the time required to prepare renewal submissions and improving the transparency of treaty pricing discussions.<br />
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'''Related concepts:'''<br />
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* [[Definition:Excess-of-loss reinsurance]]<br />
* [[Definition:Attachment point]]<br />
* [[Definition:Subject premium]]<br />
* [[Definition:Loss ratio (L/R)]]<br />
* [[Definition:Experience rating]]<br />
* [[Definition:Actuarial science]]<br />
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