When central banks execute temporary liquidity operations or derivatives transactions, they face Counterparty Credit Risk (CCR)—the risk that the trading partner defaults while a bilateral contract has a positive market value for the central bank.

CVA is an accounting adjustment that prices counterparty credit risk directly into the fair value evaluation of an active derivatives or repo portfolio. It represents the variance between a risk-free portfolio calculation and a true, credit-adjusted valuation:

CVA = Risk_Free_Valuation - Credit_Adjusted_Valuation

By calculating CVA continuously across all primary dealer networks, the trading desk can price the exact cost of default risk into transaction spreads, protecting the central bank’s balance sheet from unexpected counterparty failures.