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Why Fed Reserves Become Currency Without Leaving Its Balance Sheet

Article Quant Q&A · Author: quanty
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Summary

The document addresses an apparent contradiction in descriptions of Federal Reserve reserves: reserves are liabilities held by commercial banks, yet banks can request physical currency from the Fed. The key accounting point in the accepted answer is that currency is also a liability of the Fed. When a bank converts reserves into notes and coins, the form of the Fed’s liability changes; this exchange does not by itself remove the corresponding liability from the Fed’s balance sheet.

This distinction clarifies the difference between reserves and currency as forms of central-bank money, while recognizing that only banks hold reserve balances directly. The exchange is a short accounting explanation and provides no balance-sheet entries, broader treatment of monetary aggregates, or discussion of other factors that change the Fed’s balance-sheet size. It is therefore useful for resolving the specific reserve-versus-currency confusion, but does not explain quantitative easing or balance-sheet policy in depth.

Key ideas

  • Central-bank reserves and physical currency are both liabilities of the Federal Reserve.
  • A bank’s conversion of reserves into currency changes the form of the Fed’s liability.
  • The conversion alone does not eliminate a Fed liability from its balance sheet.
  • The explanation resolves the accounting question but does not detail broader balance-sheet operations.

Tags

Fixed incomeMulti-assetStatistics
Full text
# Why can't central bank reserves ever leave the Fed's balance sheet?


# Why can't central bank reserves ever leave the Fed's balance sheet?












I'm reading Joseph Wang's Central Banking 101 and there are two statements which seem to be contradictory to me, and I'm guessing there's an element of misunderstanding on my part which I'm looking to clear up.

These are two quotes from the book:

Statement 1 (Chapter 1 - Common Questions)

> As discussed, central bank reserves can only be held by commercial banks and can never leave the Fed's balance sheet. The level of reserves held by banks is determined by the Fed's actions.

Statement 2 (Chapter 1 - Fiat Currency)

> Commercial banks that need more [fiat currency] can convert their central bank reserves into currency by calling the Fed. The Fed stands ready to send armored vehicles loaded with currency to meet commercial bank needs.

My confusion

According to statement 1, reserves can never leave the Fed's balance sheet, meaning that during a period of quantitative easing the size of its balance sheet will continually grow until the Fed decides to taper its balance sheet.

However, by statement 2 commercial banks are able to convert their reserves into fiat currency, which get physically delivered to the commercial bank by the Fed. This means that the Fed's balance sheet is reduced by amount of fiat that the commercial bank decides to take out of its reserve holdings, but according to statement 1 the Fed is the only party in control of the size of its balance sheet.

Where is my misunderstanding?

## Answer by dm63 (score 3, accepted)

https://quant.stackexchange.com/a/66416

As requested: Currency is also a liability of the Fed on its balance sheet. Thx

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.