The quantity theory of money (QTM) asserts that aggregate prices (P) and
total money supply (M) are related according to equation:
P = VM / Y
where Y is real output and V is velocity of money. A central implication of QTM is that a given
change of money growth induces an equal change in inflation rate. Milton
Friedman thus claimed that “inflation is always and everywhere a monetary
phenomenon”.
A crucial assumption behind this claim is that the velocity of money or
its growth rate is constant and money growth has no effect on real GDP growth. For
Malaysia, we could use the same equation for velocity, V=PY / M. In which case
for a 5-year period, the velocity ratio of nominal GDP to quantity of money
(M2) was as follows:
2013
|
2014
|
2015
|
2016
|
2017
|
Jun-18
|
|
Nominal
GDP (RM trillion)
|
1.02
|
1.10
|
1.16
|
1.23
|
1.35
|
1.45
|
M2 (RM
trillion)
|
1.44
|
1.54
|
1.59
|
1.60
|
1.72
|
1.77
|
V = PY/M
|
0.71
|
0.71
|
0.73
|
0.77
|
0.78
|
0.82
|
It may be observed that the velocity of money remains rather constant
with some marginal increase from 2016.
According to St Louis Federal Reserve (Yi Wen, on “The Quantity Theory of
Money”, Paper No. 25) the post-war U.S. data suggests that velocity of money is
far from constant. So instead of assuming the velocity of money or its growth
as a constant, we can use the QTM equation (in lower case and percentage change
in growth rate)
v = p + y –
m
to accommodate the changes in velocity to be dictated directly by three
sources: inflation, output growth and money growth. For the U.S., in the long
run Friedman is probably right – changes in inflation and changes in money
growth are closely related (St Louis Federal Reserve, 2006, Number 25).
In Malaysia, money growth (M2) was observed as follows:
2013
|
2014
|
2015
|
2016
|
2017
|
Jun-18
|
|
Change in M2 (%)
|
7.94
|
7.53
|
2.88
|
3.05
|
4.82
|
5.71
|
And
inflation over the same period was:
2013
|
2014
|
2015
|
2016
|
2017
|
Jun-18
|
|
Change
in CPI (%)
|
2.10
|
3.20
|
2.10
|
2.10
|
3.50
|
0.80
|
Nominal GDP
growth declined from 6% in 2014 to 4.5% by June 2018, as depicted below:
2013
|
2014
|
2015
|
2016
|
2017
|
Jun-18
|
|
Change
in GDP (%)
|
4.70
|
6.00
|
5.00
|
4.20
|
5.40
|
4.50
|
What does this mean? How fast money changes hands per unit of time is the
velocity of money. This is a gauge of economy’s strength or people’s
willingness to spend. Since December 2017, the tempo in the Malaysian economy
has dropped. Velocity of money, as expressed earlier, v=p+y-m and shown below
(from 2013 up to June 2018):
2013
|
2014
|
2015
|
2016
|
2017
|
Jun-18
|
|
Velocity
of Money (%)
|
(1.14)
|
1.67
|
4.22
|
3.25
|
4.08
|
(0.41)
|
In a sense higher velocity may suggest greater vibrancy in the economy
and that it is likely to expand. Over last five years, this has been upward
from 2013 with a general decline thereafter (save for a rise in 2017).
Stable money growth assists in keeping inflation in check. That’s helpful
to savers but does not encourage consumption or business uptick. (We are far
from hyperinflation for now and that’s 50% increase per month – a’la Venezuela
or Zimbabwe).
So what can we do? The Central Bank has an array of tools (interest rate,
reserve changes and open market operations) but policy constraints or conundrum
may veer towards “tweaking” than a radical shift. A low interest rate
environment may assist in business sentiment or provide conditions for growth.
But that impacts exchange rate in a rising interest rate regime of the U.S. So
should we do quantitative easing (“QE”) to stimulate growth and income? But
that may impact inflation.
The U.S. did its QEs for six years without inflationary pressure because
the economy was already deflationary when it began. In addition, banks and
financial institutions hoarded the money in order to shore up their own balance
sheets and regain profitability. Banks had toxic loans and were unusually
cautious. Meanwhile, the real economy remained productive and growing. M2 money
supply remained fairly stable.
For
Malaysia, we need stimulants of the right type – perhaps measured quantitative
easing - and appropriate fiscal measures to improve the general economic tempo.
And that we hope the Minister of Finance could do in Budget 2019.
References:
1. The Quantity Theory of Money, Economic
Synopses, 2006 (Number 25)
2. Money Growth, Money Velocity, and Inflation
(www.thismatter.com)
3. What is
the correlation between money supply and GDP? By Sean Ross (www.investopedia.com)
4. How does the velocity of money affect a
national economy? (www.quora.com)
5.
Department of Statistics and Ministry of Finance, Malaysia