Bank Liquidity Crisis

A bank liquidity crisis is a situation in which a bank or banking system lacks sufficient liquid assets or funding to meet its obligations as they fall due. Unlike a solvency crisis, in which the value of assets falls below liabilities, a liquidity crisis arises from a mismatch between the timing of cash inflows and outflows, and it can occur even when the bank is solvent on a mark-to-market basis.

Mechanisms

A liquidity crisis can arise from the liability side or the asset side. A run, in which depositors or creditors demand repayment, drains funding and forces the bank to sell assets or to borrow at short notice. A freeze in wholesale funding markets can cut off access to funds, particularly for banks that rely on short-term wholesale funding.

On the asset side, a decline in the marketability of assets can create a liquidity shortage. Assets that were considered liquid in normal times may become difficult to sell in stress, and fire sales at depressed prices can transmit losses and spread stress to other institutions.

Contagion and Systemic Risk

Liquidity crises can spread. Uncertainty about the condition of one institution can cause depositors and creditors to withdraw from others, particularly when information about exposures is limited. The resulting scramble for liquidity can affect the entire system, as institutions hoard cash and refuse to lend to one another.

The systemic dimension of liquidity crises is a central concern of financial stability policy. The interconnectedness of institutions, through interbank markets, payment systems, and common exposures, means that a shock to one institution can propagate widely, and the failure of a systemically important institution can trigger a general crisis.

Historical Episodes

Historical episodes of bank liquidity crises include the panics of the nineteenth and early twentieth centuries, the banking crises of the Great Depression, and the disruptions of the global financial crisis. Each episode illustrates the mechanisms through which liquidity crises arise and spread, and the responses that can contain them.

The common features of these episodes include the build-up of maturity mismatches and leverage during booms, the role of confidence and of information in triggering runs, and the importance of the central bank as lender of last resort in halting the crisis.

Prevention and Response

Prevention focuses on building resilience. Measures include liquidity requirements, capital requirements, limits on maturity mismatch, and the supervision of funding structures. Deposit insurance reduces the incentive for insured depositors to run, though it can create moral hazard.

Response includes the provision of liquidity by the central bank, guarantees, and the recapitalisation of institutions. The design of these measures must balance the containment of the crisis against the risk of encouraging excessive risk-taking, and coordination among authorities is essential where the crisis crosses borders.

The Lender of Last Resort

The lender of last resort is a central bank function in which the central bank provides liquidity to solvent but illiquid institutions, halting runs and preventing contagion. The classical doctrine, associated with Walter Bagehot, holds that the central bank should lend freely, at a penalty rate, against good collateral.

The provision of liquidity addresses the immediate crisis, but it raises the problem of moral hazard, since institutions may take excessive risks if they expect to be rescued. The design of lender-of-last-resort policy therefore seeks to provide liquidity in a crisis while limiting the incentive for excessive risk-taking.

Supervisory and Regulatory Responses

Supervisory and regulatory responses to liquidity crises include liquidity requirements, capital requirements, and the supervision of funding structures. These measures seek to ensure that institutions have sufficient resilience to withstand shocks and to reduce the probability of crises.

The design of these measures balances the benefits of stability against the costs of reduced lending and of higher funding costs. The calibration of requirements and the scope of supervision are central to the effectiveness of the framework.

Deposit Insurance

Deposit insurance protects depositors up to specified limits, reducing the incentive for insured depositors to run and contributing to stability. The insurance is typically funded by premiums paid by banks and is administered by a public or private agency.

The design of deposit insurance involves trade-offs. Generous coverage reduces the risk of runs but increases moral hazard, while limited coverage preserves market discipline but may leave the system vulnerable. The calibration of coverage and the design of premiums are central to the framework.

Resolution Frameworks

Resolution frameworks provide the legal and operational means to manage the failure of a financial institution without disrupting the financial system. They include powers to take over institutions, to write down claims, and to transfer assets and liabilities to a bridge institution or a purchaser.

The design of resolution frameworks seeks to ensure that losses are borne by shareholders and creditors rather than by taxpayers, and that the failure of an institution does not trigger contagion. The frameworks are central to the safety net and to the credibility of the commitment not to bail out failing institutions.

See also

• Bank Liquidity
• Lender of Last Resort
• Liquidity Risk