3.19 - Effectiveness of Monetary Policy

Advantages of monetary policy over fiscal policy

Monetary policy involves actions by a central bank to influence the economy, such as adjusting interest rates. It serves as the primary tool for stabilising an economy, acting as the initial response to issues like recessionary gaps or inflationary gaps. While fiscal policy also targets demand, monetary policy offers several key benefits that make it the preferred option.

Key advantages of monetary policy

• Flexibility - Central banks can react swiftly to economic shifts, with policy committees meeting several times annually and holding emergency sessions when needed.
• Incremental adjustments - Interest rates can be changed in small percentage point increments, allowing for precise control without major disruptions.
• Reversibility - If an adjustment proves excessive, the central bank can easily reverse it by altering rates in the opposite direction.
• Independence - Central banks operate separately from government, protecting decisions from political influences and ensuring focus on long-term economic health.
• Shorter time lags - Compared to fiscal policy, monetary policy experiences reduced delays in implementation and impact, enabling faster responses to economic challenges.

Time lags in economic policy

Economic policies do not take effect immediately; various delays, known as time lags, occur between identifying a problem and seeing results. These lags apply to both monetary and fiscal policies but are generally shorter for monetary policy, contributing to its preference for stabilisation.

Types of time lags in policy implementation

The table below sets out the three lags and how monetary policy compares with fiscal policy on each.

Disadvantages of monetary policy

Despite its strengths, monetary policy has limitations that can reduce its effectiveness, particularly in certain economic conditions. These drawbacks highlight why it may not always fully address economic challenges on its own.

Key disadvantages of monetary policy

• Greater effectiveness against inflation - It works well for curbing rising prices by increasing interest rates but is less reliable for boosting growth during recessions.
• Indirect impact on spending - Lower interest rates encourage borrowing and spending indirectly, but they may fail if consumer or business confidence is low, leading to reluctance in taking loans.
• Challenges in deep recessions - During severe downturns, people may avoid large purchases due to job loss fears, and banks might hesitate to lend, limiting the policy's reach.
• String analogy - Monetary policy is compared to a string: it can effectively "pull" to slow the economy (e.g., raising rates to reduce inflation), but it struggles to "push" for growth when conditions are weak.
• Zero lower bound (ZLB) constraint - Interest rates cannot be reduced below zero easily, restricting options when rates are already low and further cuts are needed to stimulate activity.

Negative interest rates

Negative interest rates occur when the cost of holding money exceeds the benefits, effectively charging depositors for keeping funds in accounts. This unconventional tool has been used by central banks to encourage lending and spending during periods of low growth.

Implementation and effects of negative interest rates

• How they work - Central banks apply negative rates primarily to excess reserves held by commercial banks, discouraging hoarding and prompting banks to lend more to businesses and consumers.
• Examples of adoption - Denmark's central bank and the European Central Bank (ECB) were among the first to introduce negative rates, followed by central banks in Switzerland, Sweden, and Hungary.
• Impact on commercial banking - Some banks have imposed slightly negative rates on specific accounts, with limited customer withdrawals observed, as people still value the security of bank deposits.
• Requirements for broader use - Implementing a full "unconstrained negative interest rate policy" would involve phasing out high-denomination banknotes and reforming legal, regulatory, and tax systems to prevent avoidance through cash holdings.

Secular stagnation and policymakers' perspective

Secular stagnation describes a prolonged period of weak economic growth combined with inflation rates below targets, such as 2%. This concept, coined by economist Lawrence Summers, emerged prominently after the 2008-09 global financial crisis, prompting innovative policy responses.

Characteristics and policy responses

• Key features - Persistent low growth and subdued inflation.
• Policy responses - Central banks have used quantitative easing and negative interest rates to combat it.

Policymakers' views on monetary policy

• Preference for stabilisation - Monetary policy remains the go-to method for managing economic fluctuations, with central banks raising interest rates to tackle inflation and lowering them to encourage activity during slowdowns.
• Challenges from low rates - Post-2008 low interest rates have reduced the scope for further cuts in recessions, hitting the ZLB and limiting traditional tools.
• Future considerations - To overcome these limits, policymakers are exploring negative rates more deeply, alongside regulatory reforms to enable unconstrained use and enhance policy effectiveness.