A key issue with credit risk models that estimate losses over a one-year period is that they may not reflect the longer-term volatility of credit risk, particularly during economic downturns. Such models could paint an unrealistic picture of a bank’s resilience to adverse economic conditions that occur beyond the one-year scope, possibly leading to insufficient capital buffers to absorb recession-driven losses.

B is incorrect because the concern is not that one-year models overestimate expected losses but that they may not fully capture long-term economic risks.

C is incorrect because the inclusion of short-term market pricing data is not the core issue—it is the short time frame that limits the assessment of long-term risk.

D is incorrect because liquidity benefits are not the main focus; the primary concern is the ability to withstand long-term economic changes.

Things to Remember

• It is crucial for credit risk models to extend beyond short-term horizons to effectively anticipate risks arising from future economic downturns.
• Risk managers need to consider the potential impact of prolonged economic stress on credit losses when designing their risk modeling frameworks.
• Incorporating long-term economic factors into credit risk estimation can result in better-prepared capital reserves for downturn scenarios.