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📉 '''Unrealised loss''' is the decline in the fair value of an [[Definition:Investment portfolio | investment asset]] still held by an [[Definition:Insurance carrier | insurer]], representing a paper loss that has not yet been locked in through disposal. When a [[Definition:Reinsurance | reinsurer]] holds a portfolio of [[Definition:Treasury bond | government bonds]] purchased before a significant rise in interest rates, the resulting drop in bond prices creates unrealised losses that can erode reported [[Definition:Equity | equity]] and strain [[Definition:Solvency ratio | solvency metrics]] — even though no cash has left the organization. For an industry whose balance sheets are dominated by financial assets backing [[Definition:Policyholder | policyholder]] obligations, the magnitude of unrealised losses is a closely watched indicator of financial resilience.

🔧 Accounting and regulatory rules dictate whether unrealised losses merely sit in a supplementary equity line or actively compress key performance metrics. Under [[Definition:US GAAP | US GAAP]], available-for-sale securities record unrealised losses in other comprehensive income, while held-to-maturity instruments remain at amortised cost unless an impairment trigger is met. The [[Definition:IFRS 17 | IFRS 9]] standard applicable in Europe, Asia-Pacific, and other IFRS-adopting markets pushes more instruments toward fair-value measurement, meaning unrealised losses can hit the income statement directly. On the regulatory side, [[Definition:Solvency II | Solvency II's]] market-value balance sheet fully reflects unrealised losses in [[Definition:Own funds | own funds]], whereas U.S. [[Definition:Statutory accounting | statutory accounting]] has traditionally insulated insurers from some mark-to-market pressure on qualifying bonds. These differences mean that two insurers holding identical portfolios can report materially different capital positions depending on their domicile.

⚠️ Large unrealised losses create tangible operational pressures even when an insurer intends to hold assets to maturity. [[Definition:Rating agency | Rating agencies]] factor unrealised loss positions into their capital adequacy assessments, potentially triggering outlook downgrades that raise [[Definition:Reinsurance | reinsurance]] costs and unsettle [[Definition:Broker | broker]] relationships. Regulators may demand enhanced reporting or restrict [[Definition:Dividend | dividend]] distributions if unrealised losses push solvency ratios close to intervention thresholds. In a severe [[Definition:Catastrophe | catastrophe]] scenario, an insurer forced to liquidate depreciated assets to fund [[Definition:Claims payment | claims payments]] converts unrealised losses into [[Definition:Realised loss | realised losses]], permanently impairing capital. Prudent [[Definition:Asset-liability management (ALM) | asset-liability management]], duration matching, and [[Definition:Stress testing | stress testing]] are the primary defenses against this risk.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Unrealised gain]]
* [[Definition:Impairment]]
* [[Definition:Interest rate risk]]
* [[Definition:Asset-liability management (ALM)]]
* [[Definition:Solvency ratio]]
* [[Definition:Fair value]]
{{Div col end}}

Definition:Unrealised loss - Revision history

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