16-1 Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIver...
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Transcript of 16-1 Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIver...
![Page 1: 16-1 Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIver By Muni Perumal, University of Canberra, Australia.](https://reader035.fdocuments.net/reader035/viewer/2022070413/5697bfc61a28abf838ca75fc/html5/thumbnails/1.jpg)
16-1Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Chapter 16
Rent, interest and profits
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16-2Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Learning objectives• Extend our analysis of resource pricing
to include each of the non-wage income sources: rent, interest and profits
• Develop an understanding of the pattern of all income shares in Australia, including wages, and their current and historical significance
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16-3Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Economic rent• ‘Economic rent’ is a term used by economists• Narrower than the common meaning of the
term ‘rent’• Economic rent is the price paid for the use
of land and other natural resources that are completely fixed in total supply
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16-4Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Determination of land rent
Lan
d r
ent
(do
llar
s)
Acres of land0 Q
S
S
D1
R1
R2
D2
D3
R3
D4
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16-5Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Land rent• Supply of land is perfectly inelastic• Changes in demand
– Sole active determinant of land rent– ‘Derived demand’– Down-sloping
Law of diminishing returns Product price must be decreased to sell additional units
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16-6Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Perfectly inelastic supply of land• Why?
– No production costs associated with land– Economy has a finite supply of land– Variability in the useability of land affects
a very small fraction of the total amount of land
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16-7Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Land rent is a surplus• Does not serve as an incentive • A payment that is not necessary to ensure
that land will be available to the economy as a whole
• The case against land rent– Henry George’s proposal: single tax on land– Advantages and disadvantages
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16-8Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Productivity of land• Different properties will differ in their productivities
– Soil fertility– Mineral wealth– Climatic factors– Environmental degradation
• Different grades of land can be represented by differing demand curves
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16-9Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Interest
• The price paid for the use of money. Typically the amount that must be paid for the use of one dollar for one year
Two important aspects of interest:
1. Measured as a percentage
2. Money is not a resource– Money is not in itself useful
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16-10Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Determining interest rate• Demand and the supply of money determine
interest rate
Demand for money• Total demand for money is made of:
– Transaction demand for money — the demand for money as a medium of exchange
– Asset demand — money acts as a financial asset and store of wealth
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16-11Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Determining interest rate (cont.)• Money supply
– The money supply curve is a vertical line and is independent of the interest rate
• The intersection of the demand-for-money curve and the money supply curve determinesthe equilibrium interest rate
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16-12Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Interest rate determination (cont.)
0
10
8
6
4
2
50 100 150 200 250 300
Rat
e o
f in
tere
st (
per
cen
t)
Amount of money demanded and supplied ($billion)
Dm
Sm
Ie
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16-13Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Determining interest rate (cont.)Investment decision• The investment demand curve shows
the amount of investment the business sector will undertake at various real rate of interest
• Nominal interest rate is the rate of interest expressed in terms of dollars of current value
• Real interest rate is interest rate adjusted for inflation
– Important in making investment decisions
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16-14Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
The interest rate and investment
66
88
1010
00 $125$125 $150$150 $175$175
66
88
1010
00$15$15 $20$20 $25$25
Rea
l ra
te o
f in
tere
st (
%)
Sm1
Dm
Sm2 Sm3
Amount of money demandAmount of money demandand suppliedand supplied
Amount of Investment, Amount of Investment, IIR
eal
Rat
e o
f in
tere
st (
%)
(a) The money market(a) The money market (b) Investment demand(b) Investment demand
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16-15Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Range of interest rates• Commercial rates, mortgage rates etc.• Reasons for interest rate differentials
– Risk– Maturity or length of loan– Size of loan
• Pure rate of interest– Overall interest rate in the economy– Best approximated by interest paid on long-term
federal government bonds
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16-16Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Role of interest rates• Affect level of production of investment goods
– Change in interest rates results in change in investment demand
• Affect composition of production of investment goods
– Interest rates allocate the available supply of money to those projects which are expected to result in the highest levels of profit
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16-17Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Economic profits• Economists define profit more narrowly
than accountants• Profit from the viewpoint of accountants
only considers explicit cost– Payment by firms to outsiders
• They ignore implicit costs– Payments for similar resources that are owned
and self-employed by a firm
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16-18Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Economic profits (cont.)• Economic or pure profits are what remain
after all opportunity costs — explicit and implicit wage, rent, and interest costs and a normal profit — have been subtracted from a firm’s total revenue
• Economic profit can be either positive or negative
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16-19Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Role of the entrepreneur• Recall from Chapter 2
– Entrepreneurs take initiative to combine other resources in production
– Entrepreneurs make non-routine decisions– Entrepreneurs introduce innovation– Entrepreneurs take economic risks
• Normal profit– The minimum return necessary to retain
the entrepreneur in a production line
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16-20Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Sources of economic profits• Economic profits
– Are not a cost – Accrue to the entrepreneur
Sources of economic profits• Uncertainty, risk and profits
– Bearing of uninsurable risk
• Uncertainty, innovation and profits• Monopoly profits
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16-21Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Functions of profits• Energise the economy• Stimulate innovation and output• Encourage investment• Allocate resources among alternatives
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16-22Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Income shares
• Largest share of national income accrues to labour. It receives currently about 54 per cent of the national income
• Labour’s relative share has declined in Australia since the 1980s
• Capitalist share less than 25 per cent of national income
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16-23Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Relative share of GDP at factor cost: Australia
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16-24Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Income sharesHistorical trends• Defining labour’s share as ‘wages and salaries’,
it increased from around 50 per cent in the post-war period to a high of around 61 per cent in the 1970s
• Changing output mix and industry mix have contributed to the rise in labour’s share
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16-25Copyright 2007 McGraw-Hill Australia Pty Ltd PPTs t/a Microeconomics 8e, by Jackson & McIverBy Muni Perumal, University of Canberra, Australia
Next chapter:
Market failure and resource allocation