Bill Nelson: The ratchet effect ensures higher reserve levels, challenges of reversing quantitative easing, and the critical role of effective communication in monetary policy | Macro Musings

Central banks are rethinking balance sheet strategies, signaling a shift in global monetary policy.

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Add us on Google by Editorial Team Mar. 23, 2026

Key takeaways

• The ratchet effect in reserves ensures that even after significant declines, reserve levels remain higher than their starting point.
• Asset holdings decline during quantitative tightening, closely matched by reductions in the ONRRP facility.
• Bank regulations and monetary policy can sometimes conflict, complicating liquidity management.
• It’s more challenging to reduce reserves than to increase them due to regulatory expectations.
• Effective communication between monetary policy and bank supervision is crucial for managing reserve balances.
• Quantitative easing is a vital tool for the Fed, but reversing it presents significant challenges.
• Integrating the discount window into liquidity assessments can enhance banks’ resilience.
• A large portion of banks’ balance sheets is dedicated to liquidity needs, which could be redirected to lending.
• Central banks globally are reconsidering their balance sheet strategies, indicating a shift in monetary policy.
• A smaller balance sheet is seen as beneficial for the Fed, reducing its economic footprint.
• The interaction between monetary policy and bank supervision is key to understanding reserve balances.
• The discount window’s role in liquidity assessments improves banks’ resilience.
• A significant portion of banks’ balance sheets is tied up in assets for liquidity needs.
• Central banks are increasingly open to reconsidering balance sheet strategies.
• A smaller balance sheet for the Fed is advocated for better monetary policy management.

Guest intro

Bill Nelson is Chief Research Officer and Chief Economist at the Bank Policy Institute. He previously served as deputy director of the Division of Monetary Affairs at the Federal Reserve Board, where he attended Federal Open Market Committee meetings, briefed the Board, and helped design emergency liquidity facilities during the financial crisis.

The ratchet effect and reserve levels

• The ratchet effect ensures that reserve levels remain higher than their starting point, even after declines.

• It’s important to note that even though the reserves did fall significantly the ending level is still higher than the starting point

  — Bill Nelson

• This effect impacts monetary policy and reserve levels significantly.
• Understanding the ratchet effect is crucial for economic analysis and policy decisions.
• The ratchet effect deals with reserve levels, both absolute and relative to GDP.
• Reserve levels’ resilience is a critical aspect of monetary policy.
• The ratchet effect influences how the Fed manages its balance sheet.

• The ratchet effect deals specifically with the level of reserves whether it’s an absolute level or even relative to GDP

  — Bill Nelson

Quantitative tightening and the ONRRP facility

• Asset holdings decline during quantitative tightening, matched by reductions in the ONRRP facility.

• Most of the decline in their asset holdings during QT was actually matched by a rundown in the ONRRP facility

  — Bill Nelson

• Understanding the ONRRP facility’s role is essential for grasping quantitative tightening mechanics.
• The relationship between asset holdings and the ONRRP facility is critical for monetary policy.
• The ONRRP facility plays a significant role in the Fed’s operations.
• Quantitative tightening involves complex interactions between different financial mechanisms.
• The ONRRP facility helps manage the Fed’s balance sheet effectively.

• Most of the decline in their asset holdings during QT was actually matched by a rundown in the ONRRP facility

  — Bill Nelson

Bank regulations and liquidity management

• Bank regulations and monetary policy can conflict, complicating liquidity management.

• I think this is a good example where liquidity regulations internal liquidity stress test or the liquidity coverage ratio all these things interact in ways that aren’t always optimal

  — Bill Nelson

• Understanding these complexities is essential for effective liquidity management.
• Regulatory expectations make it harder to reduce reserves than to increase them.

• It’s harder, it’s not impossible, it’s just harder to push reserves down than to push them up

  — Bill Nelson

• Banks face challenges in managing reserves due to regulatory expectations.
• Effective liquidity management requires navigating regulatory complexities.
• The interaction between regulations and monetary policy affects banks’ liquidity strategies.

Monetary policy and bank supervision

• Effective communication between monetary policy and bank supervision is crucial for managing reserve balances.

• I started to learn in my supervisory side that the examiners were out telling banks they wanted them to hold more reserve balances

  — Bill Nelson

• The Fed’s supervisory role influences reserve requirements.
• Coordination between different branches of the Fed is essential for effective policy implementation.
• Reserve balance management requires understanding both monetary policy and supervision.
• The Fed’s dual role in policy and supervision impacts reserve management.

• I just made sure to try to get those two sides of the Fed talking to each other

  — Bill Nelson

• Communication between policy and supervision enhances reserve balance management.

Challenges of reversing quantitative easing

• Quantitative easing is a vital tool for the Fed, but reversing it presents significant challenges.

• We think QE is an important tool for the Fed to use when it’s needed

  — Bill Nelson

• The reversal of QE requires careful consideration of its economic impact.
• Managing the back end of QE is crucial for effective monetary policy.

• We need to be mindful can we fully reverse it on that back end

  — Bill Nelson

• QE’s implications extend beyond immediate monetary policy effects.
• The Fed must balance the benefits and challenges of QE in its policy decisions.
• Reversing QE involves complex economic considerations and potential risks.

The role of the discount window in liquidity

• Integrating the discount window into liquidity assessments can enhance banks’ resilience.

• Undersecretary McKernan indicated that there was support that the treasury was supportive of folding the recognition of the discount window into all of those things

  — Bill Nelson

• The discount window’s role in liquidity management improves banks’ resilience.
• Banks prepared to use the discount window are more liquid and resilient.

• As we saw in September 2023 banks that are prepared to borrow from the discount window are more liquid and more resilient than ones that aren’t

  — Bill Nelson

• The discount window is a critical tool for enhancing banks’ liquidity strategies.
• Recognizing the discount window’s importance is vital for effective liquidity management.
• The discount window’s integration into assessments strengthens banks’ financial positions.

Liquidity needs and lending potential

• A large portion of banks’ balance sheets is dedicated to liquidity needs, which could be redirected to lending.

• About 25% of banks’ balance sheets are now full of assets that they’re holding to meet liquidity needs

  — Bill Nelson

• Redirecting assets from liquidity needs to lending can boost economic activity.
• The discount window can facilitate increased lending by freeing up balance sheet assets.

• If they are instead allowed to make loans to businesses and households pledge those to the discount window

  — Bill Nelson

• Balancing liquidity needs with lending potential is crucial for banks’ financial strategies.
• The discount window’s role in lending highlights its importance in economic growth.
• Understanding banks’ balance sheet allocations is key to assessing their lending capacity.

Central banks’ balance sheet strategies

• Central banks globally are reconsidering their balance sheet strategies, indicating a shift in monetary policy.

• I think so and the fact that as you noted around the world it seems like all the other central banks… have basically reconsidered and rejected this idea

  — Bill Nelson

• This shift reflects a significant trend in central banking that could impact future policy decisions.
• Central banks’ openness to reconsidering strategies highlights evolving monetary policy approaches.
• The rejection of large balance sheets with a floor system marks a strategic pivot.
• Global central bank strategies influence the broader monetary policy landscape.
• Central banks’ balance sheet decisions affect economic stability and policy effectiveness.

• They wanna have a giant balance sheet with a floor system

  — Bill Nelson

Advocating for a smaller Fed balance sheet

• A smaller balance sheet is seen as beneficial for the Fed, reducing its economic footprint.

• I made my case for why the balance sheet should be smaller

  — Bill Nelson

• A smaller balance sheet enhances monetary policy management and economic stability.
• Reducing the Fed’s balance sheet footprint is crucial for effective policy implementation.
• The benefits of a smaller balance sheet include improved policy responsiveness.

• Why it’s better for the Fed to have a smaller footprint

  — Bill Nelson

• Advocating for a smaller balance sheet reflects a strategic approach to monetary policy.
• The Fed’s balance sheet size impacts its influence on the economy and financial markets.

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