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qb14q102 .pdf



Nombre del archivo original: qb14q102.pdf
Título: Bank of England Quarterly Bulletin 2014 Q1
Autor: Michael McLeay, Amar Radia and Ryland Thomas

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14

Quarterly Bulletin 2014 Q1

Money creation in the modern
economy
By Michael McLeay, Amar Radia and Ryland Thomas of the Bank’s Monetary Analysis Directorate.(1)

• This article explains how the majority of money in the modern economy is created by commercial
banks making loans.
• Money creation in practice differs from some popular misconceptions — banks do not act simply
as intermediaries, lending out deposits that savers place with them, and nor do they ‘multiply up’
central bank money to create new loans and deposits.
• The amount of money created in the economy ultimately depends on the monetary policy of the
central bank. In normal times, this is carried out by setting interest rates. The central bank can
also affect the amount of money directly through purchasing assets or ‘quantitative easing’.
Overview
In the modern economy, most money takes the form of bank
deposits. But how those bank deposits are created is often
misunderstood: the principal way is through commercial
banks making loans. Whenever a bank makes a loan, it
simultaneously creates a matching deposit in the
borrower’s bank account, thereby creating new money.
The reality of how money is created today differs from the
description found in some economics textbooks:
• Rather than banks receiving deposits when households
save and then lending them out, bank lending creates
deposits.
• In normal times, the central bank does not fix the amount
of money in circulation, nor is central bank money
‘multiplied up’ into more loans and deposits.
Although commercial banks create money through lending,
they cannot do so freely without limit. Banks are limited in
how much they can lend if they are to remain profitable in a
competitive banking system. Prudential regulation also acts
as a constraint on banks’ activities in order to maintain the
resilience of the financial system. And the households and
companies who receive the money created by new lending
may take actions that affect the stock of money — they
could quickly ‘destroy’ money by using it to repay their
existing debt, for instance.
Monetary policy acts as the ultimate limit on money
creation. The Bank of England aims to make sure the
amount of money creation in the economy is consistent with

low and stable inflation. In normal times, the Bank of
England implements monetary policy by setting the interest
rate on central bank reserves. This then influences a range of
interest rates in the economy, including those on bank loans.
In exceptional circumstances, when interest rates are at their
effective lower bound, money creation and spending in the
economy may still be too low to be consistent with the
central bank’s monetary policy objectives. One possible
response is to undertake a series of asset purchases, or
‘quantitative easing’ (QE). QE is intended to boost the
amount of money in the economy directly by purchasing
assets, mainly from non-bank financial companies.
QE initially increases the amount of bank deposits those
companies hold (in place of the assets they sell). Those
companies will then wish to rebalance their portfolios of
assets by buying higher-yielding assets, raising the price of
those assets and stimulating spending in the economy.
As a by-product of QE, new central bank reserves are
created. But these are not an important part of the
transmission mechanism. This article explains how, just as in
normal times, these reserves cannot be multiplied into more
loans and deposits and how these reserves do not represent
‘free money’ for banks.

Click here for a short video filmed in the Bank’s gold vaults
that discusses some of the key topics from this article.
(1) The authors would like to thank Lewis Kirkham for his help in producing this article.

Topical articles Money creation in the modern economy

Introduction
‘Money in the modern economy: an introduction’, a
companion piece to this article, provides an overview of what
is meant by money and the different types of money that exist
in a modern economy, briefly touching upon how each type of
money is created. This article explores money creation in the
modern economy in more detail.
The article begins by outlining two common misconceptions
about money creation, and explaining how, in the modern
economy, money is largely created by commercial banks
making loans.(1) The article then discusses the limits to the
banking system’s ability to create money and the important
role for central bank policies in ensuring that credit and money
growth are consistent with monetary and financial stability in
the economy. The final section discusses the role of money in
the monetary transmission mechanism during periods of
quantitative easing (QE), and dispels some myths surrounding
money creation and QE. A short video explains some of the
key topics covered in this article.(2)

Two misconceptions about money creation
The vast majority of money held by the public takes the form
of bank deposits. But where the stock of bank deposits comes
from is often misunderstood. One common misconception is
that banks act simply as intermediaries, lending out the
deposits that savers place with them. In this view deposits
are typically ‘created’ by the saving decisions of households,
and banks then ‘lend out’ those existing deposits to borrowers,
for example to companies looking to finance investment or
individuals wanting to purchase houses.
In fact, when households choose to save more money in bank
accounts, those deposits come simply at the expense of
deposits that would have otherwise gone to companies in
payment for goods and services. Saving does not by itself
increase the deposits or ‘funds available’ for banks to lend.
Indeed, viewing banks simply as intermediaries ignores the fact
that, in reality in the modern economy, commercial banks are
the creators of deposit money. This article explains how,
rather than banks lending out deposits that are placed with
them, the act of lending creates deposits — the reverse of the
sequence typically described in textbooks.(3)
Another common misconception is that the central bank
determines the quantity of loans and deposits in the
economy by controlling the quantity of central bank money
— the so-called ‘money multiplier’ approach. In that view,
central banks implement monetary policy by choosing a
quantity of reserves. And, because there is assumed to be a
constant ratio of broad money to base money, these reserves
are then ‘multiplied up’ to a much greater change in bank

15

loans and deposits. For the theory to hold, the amount of
reserves must be a binding constraint on lending, and the
central bank must directly determine the amount of reserves.
While the money multiplier theory can be a useful way of
introducing money and banking in economic textbooks, it is
not an accurate description of how money is created in reality.
Rather than controlling the quantity of reserves, central banks
today typically implement monetary policy by setting the
price of reserves — that is, interest rates.
In reality, neither are reserves a binding constraint on lending,
nor does the central bank fix the amount of reserves that are
available. As with the relationship between deposits and
loans, the relationship between reserves and loans typically
operates in the reverse way to that described in some
economics textbooks. Banks first decide how much to lend
depending on the profitable lending opportunities available to
them — which will, crucially, depend on the interest rate set
by the Bank of England. It is these lending decisions that
determine how many bank deposits are created by the banking
system. The amount of bank deposits in turn influences how
much central bank money banks want to hold in reserve (to
meet withdrawals by the public, make payments to other
banks, or meet regulatory liquidity requirements), which is
then, in normal times, supplied on demand by the Bank of
England. The rest of this article discusses these practices in
more detail.

Money creation in reality
Lending creates deposits — broad money
determination at the aggregate level
As explained in ‘Money in the modern economy: an
introduction’, broad money is a measure of the total amount
of money held by households and companies in the economy.
Broad money is made up of bank deposits — which are
essentially IOUs from commercial banks to households and
companies — and currency — mostly IOUs from the central
bank.(4)(5) Of the two types of broad money, bank deposits
make up the vast majority — 97% of the amount currently in
circulation.(6) And in the modern economy, those bank
deposits are mostly created by commercial banks
themselves.

(1) Throughout this article, ‘banks’ and ‘commercial banks’ are used to refer to banks and
building societies together.
(2) See www.youtube.com/watch?v=CvRAqR2pAgw.
(3) There is a long literature that does recognise the ‘endogenous’ nature of money
creation in practice. See, for example, Moore (1988), Howells (1995) and
Palley (1996).
ex
(4) The definition of broad money used by the Bank of England, M4 , also includes a
wider range of bank liabilities than regular deposits; see Burgess and Janssen (2007)
for more details. For simplicity, this article describes all of these liabilities as deposits.
A box later in this article provides details about a range of popular monetary
aggregates in the United Kingdom.
(5) Around 6% of the currency in circulation is made up of coins, which are produced by
The Royal Mint. Of the banknotes that circulate in the UK economy, some are issued
by some Scottish and Northern Irish commercial banks, although these are fully
matched by Bank of England money held at the Bank.
(6) As of December 2013.

16

Commercial banks create money, in the form of bank deposits,
by making new loans. When a bank makes a loan, for example
to someone taking out a mortgage to buy a house, it does not
typically do so by giving them thousands of pounds worth of
banknotes. Instead, it credits their bank account with a bank
deposit of the size of the mortgage. At that moment, new
money is created. For this reason, some economists have
referred to bank deposits as ‘fountain pen money’, created at
the stroke of bankers’ pens when they approve loans.(1)

Quarterly Bulletin 2014 Q1

Figure 1 Money creation by the aggregate banking
sector making additional loans(a)
Before loans are made

After loans are made

Central bank(b)
Assets

Liabilities

Assets

Reserves

Reserves
Base
money

Non-money

While new broad money has been created on the consumer’s
balance sheet, the first row of Figure 1 shows that this is
without — in the first instance, at least — any change in the
amount of central bank money or ‘base money’. As discussed
earlier, the higher stock of deposits may mean that banks
want, or are required, to hold more central bank money in
order to meet withdrawals by the public or make payments to
other banks. And reserves are, in normal times, supplied ‘on
demand’ by the Bank of England to commercial banks in
exchange for other assets on their balance sheets. In no way
does the aggregate quantity of reserves directly constrain the
amount of bank lending or deposit creation.
This description of money creation contrasts with the notion
that banks can only lend out pre-existing money, outlined in
the previous section. Bank deposits are simply a record of how
much the bank itself owes its customers. So they are a liability
of the bank, not an asset that could be lent out. A related
misconception is that banks can lend out their reserves.
Reserves can only be lent between banks, since consumers do
not have access to reserves accounts at the Bank of England.(2)

Other ways of creating and destroying deposits
Just as taking out a new loan creates money, the repayment of
bank loans destroys money.(3) For example, suppose a
consumer has spent money in the supermarket throughout the
month by using a credit card. Each purchase made using the

Base
money

Non-money
Currency

Currency

This process is illustrated in Figure 1, which shows how new
lending affects the balance sheets of different sectors of the
economy (similar balance sheet diagrams are introduced in
‘Money in the modern economy: an introduction’). As shown
in the third row of Figure 1, the new deposits increase the
assets of the consumer (here taken to represent households
and companies) — the extra red bars — and the new loan
increases their liabilities — the extra white bars. New broad
money has been created. Similarly, both sides of the
commercial banking sector’s balance sheet increase as new
money and loans are created. It is important to note that
although the simplified diagram of Figure 1 shows the amount
of new money created as being identical to the amount of new
lending, in practice there will be several factors that may
subsequently cause the amount of deposits to be different
from the amount of lending. These are discussed in detail in
the next section.

Liabilities

Commercial banks(c)

Assets

Liabilities

Reserves

Deposits

Currency

Assets

Liabilities

New loans

New
deposits

Reserves

Deposits

Currency

Consumers(d)

Broad
money

Assets

Liabilities

Deposits

Non-money

Currency

Assets

Liabilities

New
deposits

New loans

Deposits

Non-money

Broad
money

Currency

(a) Balance sheets are highly stylised for ease of exposition: the quantities of each type of
money shown do not correspond to the quantities actually held on each sector’s balance
sheet.
(b) Central bank balance sheet only shows base money liabilities and the corresponding assets.
In practice the central bank holds other non-money liabilities. Its non-monetary assets are
mostly made up of government debt. Although that government debt is actually held by the
Bank of England Asset Purchase Facility, so does not appear directly on the balance sheet.
(c) Commercial banks’ balance sheets only show money assets and liabilities before any loans
are made.
(d) Consumers represent the private sector of households and companies. Balance sheet only
shows broad money assets and corresponding liabilities — real assets such as the house
being transacted are not shown. Consumers’ non-money liabilities include existing secured
and unsecured loans.

credit card will have increased the outstanding loans on the
consumer’s balance sheet and the deposits on the
supermarket’s balance sheet (in a similar way to that shown in
Figure 1). If the consumer were then to pay their credit card
(1) Fountain pen money is discussed in Tobin (1963), who mentions it in the context of
making an argument that banks cannot create unlimited amounts of money in
practice.
(2) Part of the confusion may stem from some economists’ use of the term ‘reserves’
when referring to ‘excess reserves’ — balances held above those required by
regulatory reserve requirements. In this context, ‘lending out reserves’ could be a
shorthand way of describing the process of increasing lending and deposits until the
bank reaches its maximum ratio. As there are no reserve requirements in the
United Kingdom the process is less relevant for UK banks.
(3) The fall in bank lending in the United Kingdom since 2008 is an important reason why
the growth of money in the economy has been so much lower than in the years
leading up to the crisis, as discussed in Bridges, Rossiter and Thomas (2011) and Butt
et al (2012).

Topical articles Money creation in the modern economy

bill in full at the end of the month, its bank would reduce the
amount of deposits in the consumer’s account by the value of
the credit card bill, thus destroying all of the newly created
money.
Banks making loans and consumers repaying them are the
most significant ways in which bank deposits are created and
destroyed in the modern economy. But they are far from the
only ways. Deposit creation or destruction will also occur any
time the banking sector (including the central bank) buys or
sells existing assets from or to consumers, or, more often,
from companies or the government.
Banks buying and selling government bonds is one particularly
important way in which the purchase or sale of existing assets
by banks creates and destroys money. Banks often buy and
hold government bonds as part of their portfolio of liquid
assets that can be sold on quickly for central bank money if,
for example, depositors want to withdraw currency in large
amounts.(1) When banks purchase government bonds from
the non-bank private sector they credit the sellers with bank
deposits.(2) And, as discussed later in this article, central bank
asset purchases, known as quantitative easing (QE), have
similar implications for money creation.
Money can also be destroyed through the issuance of
long-term debt and equity instruments by banks. In addition
to deposits, banks hold other liabilities on their balance sheets.
Banks manage their liabilities to ensure that they have at least
some capital and longer-term debt liabilities to mitigate
certain risks and meet regulatory requirements. Because these
‘non-deposit’ liabilities represent longer-term investments in
the banking system by households and companies, they
cannot be exchanged for currency as easily as bank deposits,
and therefore increase the resilience of the bank. When banks
issue these longer-term debt and equity instruments to
non-bank financial companies, those companies pay for them
with bank deposits. That reduces the amount of deposit, or
money, liabilities on the banking sector’s balance sheet and
increases their non-deposit liabilities.(3)
Buying and selling of existing assets and issuing longer-term
liabilities may lead to a gap between lending and deposits in a
closed economy. Additionally, in an open economy such as
the United Kingdom, deposits can pass from domestic
residents to overseas residents, or sterling deposits could be
converted into foreign currency deposits. These transactions
do not destroy money per se, but overseas residents’ deposits
and foreign currency deposits are not always counted as part
of a country’s money supply.

Limits to broad money creation
Although commercial banks create money through their
lending behaviour, they cannot in practice do so without limit.
In particular, the price of loans — that is, the interest rate (plus

17

any fees) charged by banks — determines the amount that
households and companies will want to borrow. A number of
factors influence the price of new lending, not least the
monetary policy of the Bank of England, which affects the
level of various interest rates in the economy.
The limits to money creation by the banking system were
discussed in a paper by Nobel Prize winning economist
James Tobin and this topic has recently been the subject of
debate among a number of economic commentators and
bloggers.(4) In the modern economy there are three main sets
of constraints that restrict the amount of money that banks
can create.
(i) Banks themselves face limits on how much they can
lend. In particular:
• Market forces constrain lending because individual
banks have to be able to lend profitably in a competitive
market.
• Lending is also constrained because banks have to take
steps to mitigate the risks associated with making
additional loans.
• Regulatory policy acts as a constraint on banks’
activities in order to mitigate a build-up of risks that
could pose a threat to the stability of the financial
system.
(ii) Money creation is also constrained by the behaviour of
the money holders — households and businesses.
Households and companies who receive the newly created
money might respond by undertaking transactions that
immediately destroy it, for example by repaying
outstanding loans.
(iii) The ultimate constraint on money creation is monetary
policy. By influencing the level of interest rates in the
economy, the Bank of England’s monetary policy affects
how much households and companies want to borrow.
This occurs both directly, through influencing the loan
rates charged by banks, but also indirectly through the
overall effect of monetary policy on economic activity in
(1) It is for this reason that holdings of some government bonds are counted towards
meeting prudential liquidity requirements, as described in more detail by Farag,
Harland and Nixon (2013).
(2) In a balance sheet diagram such as Figure 1, a purchase of government bonds from
consumers by banks would be represented by a change in the composition of
consumers’ assets from government bonds to deposits and an increase in both
deposits and government bonds on the commercial banks’ balance sheet.
(3) Commercial banks’ purchases of government bonds and their issuance of long-term
debt and equity have both been important influences on broad money growth during
the financial crisis as discussed in Bridges, Rossiter and Thomas (2011) and Butt et al
(2012).
(4) Tobin (1963) argued that banks do not possess a ‘widow’s cruse’, referring to a biblical
story (earlier referenced in economics by John Maynard Keynes) in which a widow is
able to miraculously refill a cruse (a pot or jar) of oil during a famine. Tobin was
arguing that there were limits to how many loans could be automatically matched by
deposits.

18

Quarterly Bulletin 2014 Q1

the economy. As a result, the Bank of England is able to
ensure that money growth is consistent with its objective
of low and stable inflation.
The remainder of this section explains how each of these
mechanisms work in practice.

(i) Limits on how much banks can lend
Market forces facing individual banks
Figure 1 showed how, for the aggregate banking sector, loans
are initially created with matching deposits. But that does not
mean that any given individual bank can freely lend and create
money without limit. That is because banks have to be able to
lend profitably in a competitive market, and ensure that they
adequately manage the risks associated with making loans.
Banks receive interest payments on their assets, such as loans,
but they also generally have to pay interest on their liabilities,
such as savings accounts. A bank’s business model relies on
receiving a higher interest rate on the loans (or other assets)
than the rate it pays out on its deposits (or other liabilities).
Interest rates on both banks’ assets and liabilities depend on
the policy rate set by the Bank of England, which acts as the
ultimate constraint on money creation. The commercial bank
uses the difference, or spread, between the expected return on
their assets and liabilities to cover its operating costs and to
make profits.(1) In order to make extra loans, an individual
bank will typically have to lower its loan rates relative to its
competitors to induce households and companies to borrow
more. And once it has made the loan it may well ‘lose’ the
deposits it has created to those competing banks. Both of
these factors affect the profitability of making a loan for an
individual bank and influence how much borrowing takes
place.
For example, suppose an individual bank lowers the rate it
charges on its loans, and that attracts a household to take out
a mortgage to buy a house. The moment the mortgage loan is
made, the household’s account is credited with new deposits.
And once they purchase the house, they pass their new
deposits on to the house seller. This situation is shown in the
first row of Figure 2. The buyer is left with a new asset in the
form of a house and a new liability in the form of a new loan.
The seller is left with money in the form of bank deposits
instead of a house. It is more likely than not that the seller’s
account will be with a different bank to the buyer’s. So when
the transaction takes place, the new deposits will be
transferred to the seller’s bank, as shown in the second row of
Figure 2. The buyer’s bank would then have fewer deposits
than assets. In the first instance, the buyer’s bank settles with
the seller’s bank by transferring reserves. But that would leave
the buyer’s bank with fewer reserves and more loans relative
to its deposits than before. This is likely to be problematic for
the bank since it would increase the risk that it would not be
able to meet all of its likely outflows. And, in practice, banks

make many such loans every day. So if a given bank financed
all of its new loans in this way, it would soon run out of
reserves.
Banks therefore try to attract or retain additional liabilities to
accompany their new loans. In practice other banks would
also be making new loans and creating new deposits, so one
way they can do this is to try and attract some of those newly
created deposits. In a competitive banking sector, that may
involve increasing the rate they offer to households on their
savings accounts. By attracting new deposits, the bank can
increase its lending without running down its reserves, as
shown in the third row of Figure 2. Alternatively, a bank can
borrow from other banks or attract other forms of liabilities, at
least temporarily. But whether through deposits or other
liabilities, the bank would need to make sure it was
attracting and retaining some kind of funds in order to keep
expanding lending. And the cost of that needs to be
measured against the interest the bank expects to earn on the
loans it is making, which in turn depends on the level of Bank
Rate set by the Bank of England. For example, if a bank
continued to attract new borrowers and increase lending by
reducing mortgage rates, and sought to attract new deposits
by increasing the rates it was paying on its customers’
deposits, it might soon find it unprofitable to keep expanding
its lending. Competition for loans and deposits, and the desire
to make a profit, therefore limit money creation by banks.

Managing the risks associated with making loans
Banks also need to manage the risks associated with making
new loans. One way in which they do this is by making sure
that they attract relatively stable deposits to match their new
loans, that is, deposits that are unlikely or unable to be
withdrawn in large amounts. This can act as an additional
limit to how much banks can lend. For example, if all of the
deposits that a bank held were in the form of instant access
accounts, such as current accounts, then the bank might run
the risk of lots of these deposits being withdrawn in a short
period of time. Because banks tend to lend for periods of
many months or years, the bank may not be able to repay all
of those deposits — it would face a great deal of liquidity risk.
In order to reduce liquidity risk, banks try to make sure that
some of their deposits are fixed for a certain period of time, or
term.(2) Consumers are likely to require compensation for the
inconvenience of holding longer-term deposits, however, so
these are likely to be more costly for banks, limiting the
amount of lending banks wish to do. And as discussed earlier,
if banks guard against liquidity risk by issuing long-term
liabilities, this may destroy money directly when companies
pay for them using deposits.
(1) See Button, Pezzini and Rossiter (2010) for an explanation of how banks price new
loans.
(2) Banks also guard against liquidity risk by holding liquid assets (including reserves and
currency), which either can be used directly to cover outflows, or if not can quickly
and cheaply be converted into assets that can. Although if banks purchase liquid
assets such as government bonds from non-banks, this could create further deposits.

Topical articles Money creation in the modern economy

19

Figure 2 Money creation for an individual bank making an additional loan(a)
Changes to the balance sheets of the house buyer and seller
House buyer
Assets

Liabilities

House seller
Assets

Liabilities

Non-money
(house)

House buyer

House seller

Assets

Liabilities

Assets

Liabilities

New
deposit

New loan

Non-money
(house)

Non-money
Deposits

Non-money

Currency

House seller

Liabilities

Assets

Non-money
(house)

New loan

New
deposit

Non-money

Government
Deposits
debt

Deposits

Currency

Currency

Balance sheets before the loan is made.

House buyer
Assets

Non-money

Non-money

Government
Deposits
debt

Deposits

Currency

Currency

The house buyer takes out a mortgage…

Liabilities

Non-money

Government
Deposits
debt
Currency

…and uses its new deposits to pay the house seller.

Changes to the balance sheets of the house buyer and seller’s banks
Buyer’s bank
Assets

Reserves

Liabilities

Deposits

Seller’s bank
Assets

Reserves

Liabilities

Deposits

Buyer’s bank
Assets

Liabilities

New loan

New
deposit

Reserves

Deposits

Seller’s bank
Assets

Reserves

Liabilities

Buyer’s bank
Assets

Liabilities

New loan

Seller’s bank
Assets

Liabilities

Transferred
reserves

New
deposit

Reserves
Deposits

Deposits

Deposits

Reserves
Currency

Currency

Balance sheets before the loan is made.

Currency

Currency

Currency

Currency

The mortgage lender creates new deposits…

…which are transferred to the seller’s bank, along with reserves,
which the buyer’s bank uses to settle the transaction.
But settling all transactions in this way would be unsustainable:
• The buyer’s bank would have fewer reserves to meet its possible
outflows, for example from deposit withdrawals.
• And if it made many new loans it would eventually run out
of reserves.

Buyer’s bank
Assets

Liabilities

New loan

New
deposit

Reserves
Reserves
Currency

Seller’s bank
Assets

Liabilities

Reserves
Deposits

Deposits
Currency

So the buyer’s bank will in practice seek to attract or retain
new deposits (and reserves) — in the example shown here, from
the seller’s bank — to accompany their new loans.
(a) Balance sheets are highly stylised for ease of exposition: the quantities of each type of money shown do not correspond to the quantities actually held on each sector’s balance sheet.

Individual banks’ lending is also limited by considerations of
credit risk. This is the risk to the bank of lending to borrowers
who turn out to be unable to repay their loans. In part, banks
can guard against credit risk by having sufficient capital to
absorb any unexpected losses on their loans. But since loans
will always involve some risk to banks of incurring losses, the
cost of these losses will be taken into account when pricing
loans. When a bank makes a loan, the interest rate it charges
will typically include compensation for the average level of
credit losses the bank expects to suffer. The size of this
component of the interest rate will be larger when banks
estimate that they will suffer higher losses, for example when
lending to mortgagors with a high loan to value ratio. As
banks expand lending, their average expected loss per loan is
likely to increase, making those loans less profitable. This
further limits the amount of lending banks can profitably do,
and the money they can therefore create.

Market forces do not always lead individual banks to
sufficiently protect themselves against liquidity and credit
risks. Because of this, prudential regulation aims to ensure
that banks do not take excessive risks when making new loans,
including via requirements for banks’ capital and liquidity
positions. These requirements can therefore act as an
additional brake on how much money commercial banks
create by lending. The prudential regulatory framework, along
with more detail on capital and liquidity, is described in Farag,
Harland and Nixon (2013).
So far this section has considered the case of an individual
bank making additional loans by offering competitive interest
rates — both on its loans and deposits. But if all banks
simultaneously decide to try to do more lending, money
growth may not be limited in quite the same way. Although
an individual bank may lose deposits to other banks, it would
itself be likely to gain some deposits as a result of the other
banks making loans.

20

Quarterly Bulletin 2014 Q1

There are a number of reasons why many banks may choose
to increase their lending markedly at the same time. For
example, the profitability of lending at given interest rates
could increase because of a general improvement in economic
conditions. Alternatively, banks may decide to lend more if
they perceive the risks associated with making loans to
households and companies to have fallen. This sort of
development is sometimes argued to be one of the reasons
why bank lending expanded so much in the lead up to the
financial crisis.(1) But if that perception of a less risky
environment were unwarranted, the result could be a more
fragile financial system.(2) One of the responses to the crisis in
the United Kingdom has been the creation of a
macroprudential authority, the Financial Policy Committee, to
identify, monitor and take action to reduce or remove risks
which threaten the resilience of the financial system as a
whole.(3)

in the economy.(5) Instead, the money may initially pass to
households or companies with positive holdings of financial
assets: the elderly person may have already paid off their
mortgage, or a company receiving money as a payment may
already have sufficient liquid assets to cover possible
outgoings. They may then be left holding more money than
they desire, and attempt to reduce their ‘excess’ money
holdings by increasing their spending on goods and services.
(In the case of a company it may instead buy other,
higher-yielding, assets.)

(ii) Constraints arising from the response of households
and companies
In addition to the range of constraints facing banks that act to
limit money creation, the behaviour of households and
companies in response to money creation by the banking
sector can also be important, as argued by Tobin. The
behaviour of the non-bank private sector influences the
ultimate impact that credit creation by the banking sector has
on the stock of money because more (or less) money may be
created than they wish to hold relative to other assets (such as
property or shares). As the households and companies who
take out loans do so because they want to spend more, they
will quickly pass that money on to others as they do so. How
those households and companies then respond will determine
the stock of money in the economy, and potentially have
implications for spending and inflation.
There are two main possibilities for what could happen to
newly created deposits. First, as suggested by Tobin, the
money may quickly be destroyed if the households or
companies receiving the money after the loan is spent wish to
use it to repay their own outstanding bank loans. This is
sometimes referred to as the ‘reflux theory’.(4)
For example, a first-time house buyer may take out a
mortgage to purchase a house from an elderly person who, in
turn, repays their existing mortgage and moves in with their
family. As discussed earlier, repaying bank loans destroys
money just as making loans creates it. So, in this case, the
balance sheet of consumers in the economy would be
returned to the position it was in before the loan was made.
The second possible outcome is that the extra money creation
by banks can lead to more spending in the economy. For
newly created money to be destroyed, it needs to pass to
households and companies with existing loans who want to
repay them. But this will not always be the case, since asset
and debt holdings tend to vary considerably across individuals

These two scenarios for what happens to newly created
money — being quickly destroyed or being passed on via
spending — have very different implications for economic
activity. In the latter, the money may continue to be passed
between different households and companies each of whom
may, in turn, increase their spending. This process —
sometimes referred to as the ‘hot potato’ effect — can lead,
other things equal, to increased inflationary pressure on the
economy.(6) In contrast, if the money is quickly destroyed as
in the former scenario, there need be no further effects on the
economy.
This section has so far discussed how the actions of banks,
households and companies can affect the amount of money in
the economy, and therefore inflationary pressure. But the
ultimate determinant of monetary conditions in the economy
is the monetary policy of the central bank.

(iii) Monetary policy — the ultimate constraint on money
creation
One of the Bank of England’s primary objectives is to ensure
monetary stability by keeping consumer price inflation on
track to meet the 2% target set by the Government. And, as
discussed in the box on pages 22–23, over some periods of
time, various measures of money have grown at a similar rate
to nominal spending, which determines inflationary pressure
in the economy in the medium term. So setting monetary
policy appropriately to meet the inflation target should
ultimately ensure a stable rate of credit and money creation
consistent with meeting that target. This section explains the
relationship between monetary policy and different types of
money.
In normal times, the Monetary Policy Committee (MPC), like
most of its equivalents in other countries, implements
monetary policy by setting short-term interest rates,
specifically by setting the interest rate paid on central bank
reserves held by commercial banks. It is able to do so because
(1) See, for example, Haldane (2009).
(2) Tucker (2009) discusses the possibility of such ‘risk illusion’ in the financial system.
(3) Tucker, Hall and Pattani (2013) describe the new powers for macroprudential
policymaking in the United Kingdom in the wake of the recent financial crisis.
(4) See Kaldor and Trevithick (1981).
(5) See Kamath et al (2011).
(6) This mechanism is explained in more detail in papers including Laidler (1984),
Congdon (1992, 2005), Howells (1995), Laidler and Robson (1995), Bridges, Rossiter
and Thomas (2011) and Bridges and Thomas (2012).

Topical articles Money creation in the modern economy

of the Bank’s position as the monopoly provider of central
bank money in the United Kingdom. And it is because there is
demand for central bank money — the ultimate means of
settlement for banks, the creators of broad money — that the
price of reserves has a meaningful impact on other interest
rates in the economy.
The interest rate that commercial banks can obtain on money
placed at the central bank influences the rate at which they
are willing to lend on similar terms in sterling money markets
— the markets in which the Bank and commercial banks lend
to each other and other financial institutions. The exact
details of how the Bank uses its money market operations to
implement monetary policy has varied over time, and central
bank operating procedures today differ somewhat from
country to country, as discussed in Clews, Salmon and
Weeken (2010).(1) Changes in interbank interest rates then
feed through to a wider range of interest rates in different
markets and at different maturities, including the interest
rates that banks charge borrowers for loans and offer savers
for deposits.(2) By influencing the price of credit in this way,
monetary policy affects the creation of broad money.
This description of the relationship between monetary policy
and money differs from the description in many introductory
textbooks, where central banks determine the quantity of
broad money via a ‘money multiplier’ by actively varying the
quantity of reserves.(3) In that view, central banks implement
monetary policy by choosing the quantity of reserves. And,
because there is assumed to be a stable ratio of broad money
to base money, these reserves are then ‘multiplied up’ to a
much greater change in bank deposits as banks increase
lending and deposits.
Neither step in that story represents an accurate description of
the relationship between money and monetary policy in the
modern economy. Central banks do not typically choose a
quantity of reserves to bring about the desired short-term
interest rate.(4) Rather, they focus on prices — setting
interest rates.(5) The Bank of England controls interest rates
by supplying and remunerating reserves at its chosen policy
rate. The supply of both reserves and currency (which
together make up base money) is determined by banks’
demand for reserves both for the settlement of payments and
to meet demand for currency from their customers — demand
that the central bank typically accommodates.
This demand for base money is therefore more likely to be a
consequence rather than a cause of banks making loans and
creating broad money. This is because banks’ decisions to
extend credit are based on the availability of profitable lending
opportunities at any given point in time. The profitability of
making a loan will depend on a number of factors, as discussed
earlier. One of these is the cost of funds that banks face,
which is closely related to the interest rate paid on reserves,
the policy rate.

21

In contrast, the quantity of reserves already in the system does
not constrain the creation of broad money through the act of
lending.(6) This leg of the money multiplier is sometimes
motivated by appealing to central bank reserve requirements,
whereby banks are obliged to hold a minimum amount of
reserves equal to a fixed proportion of their holdings of
deposits. But reserve requirements are not an important
aspect of monetary policy frameworks in most advanced
economies today.(7)
A looser stance of monetary policy is likely to increase the
stock of broad money by reducing loan rates and increasing
the volume of loans. And a larger stock of broad money,
accompanied by an increased level of spending in the
economy, may cause banks and customers to demand more
reserves and currency.(8) So, in reality, the theory of the
money multiplier operates in the reverse way to that normally
described.

QE — creating broad money directly with
monetary policy
The previous section discussed how monetary policy can be
seen as the ultimate limit to money creation by commercial
banks. But commercial banks could alternatively create too
little money to be consistent with the economy meeting the
inflation target. In normal times, the MPC can respond by
lowering the policy rate to encourage more lending and hence
more money creation. But, in response to the financial crisis,
the MPC cut Bank Rate to 0.5% — the so-called effective
lower bound.
Once short-term interest rates reach the effective lower
bound, it is not possible for the central bank to provide further
stimulus to the economy by lowering the rate at which
reserves are remunerated.(9) One possible way of providing
further monetary stimulus to the economy is through a
programme of asset purchases (QE). Like reductions in Bank
(1) The framework for the Bank’s operations in the sterling money markets is set out in
the Bank’s ‘Red Book’, available at
www.bankofengland.co.uk/markets/Documents/money/publications/redbook.pdf.
Recent developments in sterling money markets are discussed by Jackson and
Sim (2013).
(2) Bank of England (1999) discusses the transmission mechanism of monetary policy in
more detail.
(3) Benes and Kumhof (2012) discuss the money multiplier myth in more detail.
(4) As discussed by Disyatat (2008).
(5) Bindseil (2004) provides a detailed account of how monetary policy implementation
works through short-term interest rates.
(6) Carpenter and Demiralp (2012) show that changes in quantities of reserves are
unrelated to changes in quantities of loans in the United States.
(7) The Bank of England currently has no formal reserve requirements, for example.
(It does require banks to hold a proportion of non-interest bearing ‘cash ratio
deposits’ with the Bank for a subset of their liabilities. But the function of these cash
ratio deposits is non-operational. Their sole purpose is to provide income for the
Bank.) Bernanke (2007) discusses how reserve requirements now present less of a
constraint than in the past in the United States.
(8) Kydland and Prescott (1990) found that broad money aggregates led the cycle, while
base money aggregates tended to lag the cycle slightly.
(9) If the central bank were to lower interest rates significantly below zero, banks could
swap their bank reserves into currency, which would pay a higher interest rate (of
zero, or slightly less after taking into account the costs of storing currency). Or put
another way, the demand for central bank reserves would disappear, so the central
bank could no longer influence the economy by changing the price of those reserves.

22

The information content of different types of
money and monetary aggregates
One of the Bank of England’s primary objectives is to ensure
monetary stability by keeping inflation on track to meet the
Government’s 2% target. Milton Friedman (1963) famously
argued that ‘inflation is always and everywhere a monetary
phenomenon’. So changes in the money supply may contain
valuable information about spending and inflationary pressure
in the economy. Since money is essential for buying goods and
services, it is likely to contain corroborative information about
the current level of nominal spending in the economy. It may
also provide incremental information about future movements
in nominal spending, and so can be a useful indicator of future
inflationary pressure. Finally, the behaviour of money may help
to reveal the nature of the monetary transmission
mechanism, especially when monetary policy is operated
through ‘quantitative easing’ (QE).
In practice, a key difficulty is assessing which measures of
money are the appropriate ones to look at for each of the
different purposes. The Bank currently constructs a number of
monetary aggregates and publishes a range of data that allow
to be created, summarised in Table 1. Chart A shows some
long-run historical time series of the growth of monetary
aggregates compared with that of nominal spending in the
economy.(1) Given the various changes in the UK monetary
regime over the past 150 years, it is unlikely that a single
monetary indicator perfectly captures both the corroborative
and incremental information in money. The UK financial sector
has also undergone various structural changes that need to be
taken into account when considering the underlying link
between money and spending. For example, during periods
when the financial sector has grown relative to the rest of the
economy (such as in the early 1980s and the 2000s), broad
money has tended to grow persistently faster than nominal
spending.
Narrower measures of money, such as notes and coin and sight
deposits (accounts that can be withdrawn immediately without
penalty) are, in principle, better corroborative indicators of
spending, as these are likely to be the types of money used to
carry out the majority of transactions in goods and services in
the economy. The sum of notes and coin and sight deposits
held by the non-bank private sector is sometimes known as zero
maturity money or ‘MZM’.(2)
Broader measures of money might be more appropriate as
incremental indicators of future spending and more revealing
about the nature of the transmission mechanism. M2, for
example, additionally includes household time deposits such as
savings accounts.(3) And M4 is an even broader measure,
including all sight and time deposits held by non-financial
companies and non-bank financial companies. The main article
describes how QE works by first increasing the deposits of
financial companies. As these companies rebalance their

Quarterly Bulletin 2014 Q1

portfolios, asset prices are likely to increase and, with a lag, lead
to an increase in households’ and companies’ spending. So
monitoring broad money has been an important part of
assessing the effectiveness of QE.(4)
A number of econometric studies have suggested that sectoral
movements in broad money may also provide valuable
incremental information about spending in the economy.(5) For
example, non-financial companies’ deposits appear to be a
leading indicator of business investment in the economy.
One can also try and weight different types of narrow and broad
money together using some metric of how much each type of
money is used in transactions — known as a Divisia index.(6) In
practice, the interest paid on a given type of money is typically
used as a weighting metric. That is because individuals and
companies are only likely to hold money which earns a low
interest rate relative to other financial instruments if it
compensates them by providing greater transactions services.
Identifying the appropriate measurement of money has been
complicated by the continued development of the financial
sector. This has both expanded the range of instruments that
might serve as money and the range of financial institutions
that borrow from and deposit with the traditional banking
system. For example, sale and repurchase agreements (known
as repos) — where a company agrees to buy a security from a
bank with agreement to sell it back later — are currently
included in M4 since the claim held on the bank can be thought
of as a secured deposit.
In addition, some economists have argued that a range of
instruments that provide collateral for various types of
borrowing and lending could also be included in a broader
measure of money.(7) Moreover, many of the non-bank
institutions that hold deposits mainly intermediate between
banks themselves. The deposits of these institutions, known as
‘intermediate other financial corporations’ (IOFCs), are likely to
reflect activities within the banking system that are not directly
related to spending in the economy.(8) For this reason, the
Bank’s headline measure of broad money is M4ex, which
excludes IOFC deposits.
(1) These series involve splicing together current Bank of England data with historic data
on monetary aggregates. A spreadsheet of the data is available at
www.bankofengland.co.uk/publications/Documents/quarterlybulletin/2014/
longrunmoneydata.xls.
(2) A narrower measure known as non-interest bearing M1 can also be constructed. This
measure has become a less useful aggregate as most sight deposits now pay some
form of interest. For example, during the financial crisis when interest rates fell close
to zero, the growth of non-interest bearing M1 picked up markedly as the relative cost
of holding a non-interest bearing deposit fell sharply compared to an interest-bearing
one. Focusing on M1 would have given a misleading signal about the growth of
nominal spending in the economy.
(3) M2 contains the non-bank private sector’s holdings of notes and coin plus ‘retail’
deposits which are deposits that pay an advertised interest rate. Those will largely be
deposits held by households but will also apply to some corporate deposits.
(4) See Bridges, Rossiter and Thomas (2011) and Butt et al (2012).
(5) See, for example, Astley and Haldane (1995), Thomas (1997a, b) and Brigden and
Mizen (2004).
(6) See Hancock (2005), for example.
(7) See, for example, Singh (2013).
(8) See Burgess and Janssen (2007) and
www.bankofengland.co.uk/statistics/Pages/iadb/notesiadb/m4adjusted.aspx for more
detail.

Topical articles Money creation in the modern economy

23

Table 1 Popular monetary aggregates that can be constructed from available UK data(a)
Name

Definition

Description(b)

Availability

Notes and coin

Notes and coin in circulation outside
the Bank of England.

The narrowest measure of money and used as an indicator of cash-based transactions.

1870–present(c)

M0

Notes and coin plus central bank
reserves.

Historically the base measure of money used in money multiplier calculations. Often
used as an approximate measure of the size of the Bank of England’s balance sheet.

1870–present(c)

No longer published by the Bank of England but can be reconstructed.(d)
1921–present(c)

Notes and coin plus non-interest
bearing sight deposits held by the
non-bank private sector.

An indicator of transactions in goods and services in the economy, less useful now since
most sight deposits pay some form of interest.

Notes and coin plus all sight deposits
held by the non-bank private sector.

An indicator of transactions in goods and services in the economy.

Notes and coin plus all retail deposits
(including retail time deposits) held by
the non-bank private sector.

A broader measure of money than MZM encompassing all retail deposits. The key
additions are household time deposits and some corporate retail time deposits.

Notes and coin plus all sight and time
deposits held with banks (excluding
building societies) by the non-bank
private sector.

Up until 1987 the headline broad monetary aggregate constructed by the Bank of
England.

M4

Notes and coin, deposits, certificates
of deposit, repos and securities with a
maturity of less than five years held by
the non-bank private sector.

Up until 2007 the headline broad monetary aggregate constructed by the Bank of
England.

1963–present

M4ex

M4 excluding the deposits of IOFCs.

Since 2007 the headline broad monetary aggregate constructed by the Bank of England.

1997–present

Divisia

A weighted sum of different types of
money.

Aims to weight the component assets of broad money according to the transactions
services they provide.(e)

1977–present

Non-interest bearing M1

MZM

M2 or retail M4

M3

Not published by the Bank of England but can be constructed from published components.
1977–present

Not published by the Bank of England but can be constructed from published components.
The Bank also produces a measure based on an ECB definition of M1.
1982–present

Published by the Bank of England. The Bank also produces a measure based on an ECB
definition of M2.
1870–1990(c)

The Bank also produces a measure based on an ECB definition of M3.

(a) All definitions refer to sterling instruments only. Some of the definitions in this table were changed at various points in time. For example the original M3 aggregate included public sector deposits and the non-bank private
sector’s holdings of deposits in foreign currency. A more comprehensive history of the development of UK monetary aggregates can be found at www.bankofengland.co.uk/statistics/Documents/ms/articles/art2jul03.pdf.
(b) Published by the Bank of England unless otherwise stated.
(c) This series uses the data constructed by Capie and Webber (1985).
(d) Data on M0 were discontinued following reforms to the Bank of England’s money market operations in 2006. See www.bankofengland.co.uk/statistics/Documents/ms/articles/artjun06.pdf for more details.
(e) The Divisia indices for other financial corporations and for the non-bank private sector were discontinued in 2013. See www.bankofengland.co.uk/statistics/Documents/ms/articles/art1aug13.pdf for more details.

Chart A Different monetary aggregates and nominal spending
Notes and coin(a)
Non-interest bearing M1(b)

MZM(c)
M2(d)

Divisia

Nominal GDP(f)

M3/M4/M4ex(e)
Percentage changes on a year earlier

60
50
40
30
20
10

+
0



10
20
30
1870

80

90

1900

10

20

30

40

50

60

70

80

90

2000

10

Sources: Bank of England, Capie and Webber (1985), Mitchell (1988), ONS, Sefton and Weale (1995), Solomou and Weale (1991) and Bank calculations. All series seasonally
adjusted and break-adjusted where possible. Historical data seasonally adjusted using X12.
(a) 1969 Q2 to 2013 Q4 — notes and coin in circulation. 1870 Q1 to 1969 Q2 — M0 from Capie and Webber (1985).
(b) 1977 Q1 to 2013 Q4 — notes and coin held by the non-bank and building society private sector plus non-interest bearing deposits. Prior to 2008 Q1, excludes deposits with
building societies. 1963 Q1 to 1977 Q1 — historical M1 data from Bank of England Quarterly Bulletins. 1921 Q4 to 1963 Q1 — Capie and Webber (1985).
(c) Notes and coin held by the non-bank and building society private sector plus total sight deposits. Prior to 1998 Q4 excludes deposits with building societies.
(d) Notes and coin and retail deposits held by the non-bank and building society private sector.
(e) 1997 Q4 to 2013 Q4 — M4 excluding intermediate OFCs. 1963 Q1 to 1997 Q4 — M4. 1870 Q2 to 1963 Q1 — M3 from Capie and Webber (1985).
(f) Composite estimate of nominal GDP at market prices. See appendix of Hills, Thomas and Dimsdale (2010) for details.

24

Rate, asset purchases are a way in which the MPC can loosen
the stance of monetary policy in order to stimulate economic
activity and meet its inflation target. But the role of money in
the two policies is not the same.
QE involves a shift in the focus of monetary policy to the
quantity of money: the central bank purchases a quantity of
assets, financed by the creation of broad money and a
corresponding increase in the amount of central bank reserves.
The sellers of the assets will be left holding the newly created
deposits in place of government bonds. They will be likely to
be holding more money than they would like, relative to other
assets that they wish to hold. They will therefore want to
rebalance their portfolios, for example by using the new
deposits to buy higher-yielding assets such as bonds and
shares issued by companies — leading to the ‘hot potato’
effect discussed earlier. This will raise the value of those
assets and lower the cost to companies of raising funds in
these markets. That, in turn, should lead to higher spending in
the economy.(1) The way in which QE works therefore differs
from two common misconceptions about central bank asset
purchases: that QE involves giving banks ‘free money’; and
that the key aim of QE is to increase bank lending by providing
more reserves to the banking system, as might be described by
the money multiplier theory. This section explains the
relationship between money and QE and dispels these
misconceptions.

The link between QE and quantities of money
QE has a direct effect on the quantities of both base and broad
money because of the way in which the Bank carries out its
asset purchases. The policy aims to buy assets, government
bonds, mainly from non-bank financial companies, such as
pension funds or insurance companies. Consider, for example,
the purchase of £1 billion of government bonds from a pension
fund. One way in which the Bank could carry out the purchase
would be to print £1 billion of banknotes and swap these
directly with the pension fund. But transacting in such large
quantities of banknotes is impractical. These sorts of
transactions are therefore carried out using electronic forms of
money.
As the pension fund does not hold a reserves account with the
Bank of England, the commercial bank with whom they hold a
bank account is used as an intermediary. The pension fund’s
bank credits the pension fund’s account with £1 billion of
deposits in exchange for the government bonds. This is shown
in the first panel of Figure 3. The Bank of England finances its
purchase by crediting reserves to the pension fund’s bank — it
gives the commercial bank an IOU (second row). The
commercial bank’s balance sheet expands: new deposit
liabilities are matched with an asset in the form of new
reserves (third row).

Quarterly Bulletin 2014 Q1

Figure 3 Impact of QE on balance sheets(a)
Before asset purchase

After asset purchase

Pension fund
Assets

Liabilities

Assets

Liabilities

Government
debt

Other

Deposits

Other

Assets

Liabilities

Central bank(b)

Government
debt
Assets

Liabilities

Other assets

Reserves

Reserves
Other assets

Commercial bank

Assets

Liabilities

Reserves

Deposits

Assets

Liabilities

Reserves

Deposits

(a) Balance sheets are highly stylised for ease of exposition: quantities of assets and liabilities
shown do not correspond to the quantities actually held by those sectors. The figure only
shows assets and liabilities relevant to the transaction.
(b) Government debt is actually purchased by the Bank of England’s Asset Purchase Facility
using a loan from the Bank of England, so does not actually appear directly on the Bank’s
official consolidated balance sheet.

Two misconceptions about how QE works
Why the extra reserves are not ‘free money’ for banks
While the central bank’s asset purchases involve — and affect
— commercial banks’ balance sheets, the primary role of those
banks is as an intermediary to facilitate the transaction
between the central bank and the pension fund. The
additional reserves shown in Figure 3 are simply a by-product
of this transaction. It is sometimes argued that, because they
are assets held by commercial banks that earn interest, these
reserves represent ‘free money’ for banks. While banks do
earn interest on the newly created reserves, QE also creates an
accompanying liability for the bank in the form of the pension
fund’s deposit, which the bank will itself typically have to pay
interest on. In other words, QE leaves banks with both a new
IOU from the central bank but also a new, equally sized IOU to
consumers (in this case, the pension fund), and the interest
rates on both of these depend on Bank Rate.

Why the extra reserves are not multiplied up into new
loans and broad money
As discussed earlier, the transmission mechanism of QE relies
on the effects of the newly created broad — rather than base
— money. The start of that transmission is the creation of

(1) The ways in which QE affects the economy are covered in more detail in Benford et al
(2009), Joyce, Tong and Woods (2011) and Bowdler and Radia (2012). The role of
money more specifically is described in Bridges, Rossiter and Thomas (2011), Bridges
and Thomas (2012) and Butt et al (2012).

Topical articles Money creation in the modern economy

bank deposits on the asset holder’s balance sheet in the place
of government debt (Figure 3, first row). Importantly, the
reserves created in the banking sector (Figure 3, third row) do
not play a central role. This is because, as explained earlier,
banks cannot directly lend out reserves. Reserves are an IOU
from the central bank to commercial banks. Those banks can
use them to make payments to each other, but they cannot
‘lend’ them on to consumers in the economy, who do not hold
reserves accounts. When banks make additional loans they
are matched by extra deposits — the amount of reserves does
not change.
Moreover, the new reserves are not mechanically multiplied
up into new loans and new deposits as predicted by the money
multiplier theory. QE boosts broad money without directly
leading to, or requiring, an increase in lending. While the first
leg of the money multiplier theory does hold during QE — the
monetary stance mechanically determines the quantity of
reserves — the newly created reserves do not, by themselves,
meaningfully change the incentives for the banks to create
new broad money by lending. It is possible that QE might
indirectly affect the incentives facing banks to make new
loans, for example by reducing their funding costs, or by
increasing the quantity of credit by boosting activity.(1) But
equally, QE could lead to companies repaying bank credit, if
they were to issue more bonds or equity and use those funds

25

to repay bank loans. On balance, it is therefore possible for
QE to increase or to reduce the amount of bank lending in the
economy. However these channels were not expected to be
key parts of its transmission: instead, QE works by
circumventing the banking sector, aiming to increase private
sector spending directly.(2)

Conclusion
This article has discussed how money is created in the modern
economy. Most of the money in circulation is created, not by
the printing presses of the Bank of England, but by the
commercial banks themselves: banks create money whenever
they lend to someone in the economy or buy an asset from
consumers. And in contrast to descriptions found in some
textbooks, the Bank of England does not directly control the
quantity of either base or broad money. The Bank of England
is nevertheless still able to influence the amount of money in
the economy. It does so in normal times by setting monetary
policy — through the interest rate that it pays on reserves held
by commercial banks with the Bank of England. More
recently, though, with Bank Rate constrained by the effective
lower bound, the Bank of England’s asset purchase programme
has sought to raise the quantity of broad money in circulation.
This in turn affects the prices and quantities of a range of
assets in the economy, including money.

(1) A similar mechanism whereby QE could increase bank lending by enabling banks to
attract more stable funding is discussed in Miles (2012).
(2) These channels, along with the effect of QE on bank lending more broadly, are
discussed in detail in a box in Butt et al (2012).

26

Quarterly Bulletin 2014 Q1

References
Astley, M and Haldane, A (1995), ‘Money as an indicator’, Bank of
England Working Paper No. 35.
Bank of England (1999), ‘The transmission mechanism of monetary
policy’, available at www.bankofengland.co.uk/publications/
Documents/other/monetary/montrans.pdf.
Benes, J and Kumhof, M (2012), ‘The Chicago Plan revisited’, IMF
Working Paper No. 12/202.
Benford, J, Berry, S, Nikolov, K, Robson, M and Young, C (2009),
‘Quantitative easing’, Bank of England Quarterly Bulletin, Vol. 49,
No. 2, pages 90–100.
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