Inequality And The Redistribution Of Income

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Inequality and the Redistribution of Income

Inequality and the Redistribution of Income

Inequality and Poverty

INEQUALITY AND POVERTY ■



Types of inequality ✜

size distribution of income



functional distribution of income



distribution of income by recipient



distribution of wealth



poverty: absolute and relative

Measuring the size distribution of income ✜

Lorenz curves

Lorenz curve

Percentage share of national income (cumulative)

100

80 Line of complete equality

60

40

20

O

O

20

40

60

Percentage of population

80

100

Lorenz curve

Percentage share of national income (cumulative)

100

80 Line of complete equality

60

40

Lorenz curve

20

O

O

20

40

60

Percentage of population

80

100

INEQUALITY AND POVERTY ■

Types of inequality size distribution of income ✜ functional distribution of income ✜ distribution of income by recipient ✜ distribution of wealth ✜ poverty: absolute and relative ✜



Measuring the size distribution of income Lorenz curves ✜ Gini coefficients ✜

Lorenz curve and Gini coefficient 100

Percentage share of national income (cumulative)

Gini coefficient = A / (A + B) 80 Line of complete equality

60

A

40

B Lorenz curve

20

O

O

20

40

60

Percentage of population

80

100

Lorenz curve: UK households’ pre-tax incomes: 2000/1

Percentage share of national income (cumulative)

100

80

60

40 x

24.6 20

O

Lorenz curve

O

20

5 60 80 0 Percentage of population 40

100

Lorenz curves for two countries with the same Gini coefficient

Percentage share of national income (cumulative)

100

80

Area X = area Y Y

60

40 Country B 20 X Country A O

O

20

40

60

Percentage of population

80

100

INEQUALITY AND POVERTY ■



Types of inequality ✜

size distribution of income



functional distribution of income



distribution of income by recipient



distribution of wealth



poverty: absolute and relative

Measuring the size distribution of income ✜

Lorenz curves



Gini coefficients



ratios of shares of quantile groups

Ratio of income shares of bottom 40% to top 20% of households (after taxes and benefits)

INEQUALITY AND POVERTY ■

Distribution in the UK ✜

size distribution

Size distribution of UK income by quintile group of households: 2000/1 Bottom 20% 2%

Next 20%

7%

Top 20%

15%

Middle 20%

51%

25%

Next 20%

Income before taxes and benefits

Size distribution of UK income by quintile group of households: 2000/1 Bottom 20% 2%

Next 20%

7%

Top 20%

15%

Middle 20%

51%

Bottom 20% Top 20%

6%

Next 20% 11%

45% 16%

Middle 20%

25% 22%

Next 20% Next 20%

Income before taxes and benefits

Income after taxes and benefits

Percentage shares of income before and after tax by decile group of households: 2000/1 30

26.8

% of income

25

Income before tax

20

15.7 15 10 5

12.9

11.1

9.0

7.6

6.0

4.7

3.8

2.5

0 Top 10% 11 to 20 21 to 30 31 to 40 41 to 50 51 to 60 61 to 70 71 to 80 81 to 90

Bottom 10%

Source: Economic Trends (ONS, April 2002)

Percentage shares of income before and after tax by decile group of households: 2000/1 30

26.8 25.8

% of income

25

Income before tax

20 15 10 5

15.715.2

Income after tax 12.912.6

11.110.9

9.0 9.1

7.6 7.8

6.0 6.3

4.7 5.2 3.8 4.2

2.5 2.8

0 Top 10% 11 to 20 21 to 30 31 to 40 41 to 50 51 to 60 61 to 70 71 to 80 81 to 90

Bottom 10%

Source: Economic Trends (ONS, April 2002)

INEQUALITY AND POVERTY ■

Distribution in the UK size distribution ✜ functional ✜

✦ by

source

Sources of UK household income as a percentage of gross household income Wages and salaries

Income from self employment

Investment income

Pensions, annuities

Social security benefits

Other

1% 2% 10% 4% 6%

77%

1975 Source: Family Spending (ONS, 2002)

Sources of UK household income as a percentage of gross household income Wages and salaries

Income from self employment

Investment income

Pensions, annuities

Social security benefits

Other

1%

1%

2% 10% 4%

12% 7%

6%

4% 9% 77%

1975

67%

2000/1 Source: Family Spending (ONS, 2002)

INEQUALITY AND POVERTY ■

Distribution in the UK size distribution ✜ functional ✜

✦ by

source ✦ by occupation

Average gross weekly earnings of UK full-time adult male employees: 2001

INEQUALITY AND POVERTY ■

Distribution in the UK size distribution ✜ functional ✜

✦ by

source ✦ by occupation ✜

inequality by person/household type

INEQUALITY AND POVERTY ■

Distribution in the UK size distribution ✜ functional ✜

✦ by

source ✦ by occupation ✜

inequality by person/household type ✦ household

composition

Weekly income for different types of UK households: 2000/1 £700 £600

Gross income

£500 £400 £300 £200 £100 £0

One adult (not retired)

One adult, two or more children

One man, one woman (not retired)

Two adults, four or more children

Source: Family spending (ONS,2002)

Weekly income for different types of UK households: 2000/1 £700 £600

Gross income Disposable income

£500 £400 £300 £200 £100 £0

One adult (not retired)

One adult, two or more children

One man, one woman (not retired)

Two adults, four or more children

Source: Family spending (ONS,2002)

INEQUALITY AND POVERTY ■

Distribution in the UK size distribution ✜ functional ✜

✦ by

source ✦ by occupation ✜

inequality by person/household type ✦ household ✦ sex

composition

Average gross weekly earnings of UK full-time adult female employees: 2001 Medical practitioners Financial managers Personnel managers Secondary teachers Police officers Nurses Secretaries Clerks Sales assistants Bar staff £0

£200

£400

£600

£800

£1,000

Average gross weekly earnings of UK full-time adult employees: 2001 Financial managers Medical practioners Personnel managers Secondary teachers Nurses

Women's earnings

Factory lineworkers

Men's earnings

Clerks Sales assistants Bar staff 0

200

400

600

800

1000

1200

INEQUALITY AND POVERTY ■

Distribution in the UK size distribution ✜ functional ✜

✦ by

source ✦ by occupation ✜

inequality by person/household type ✦ household

composition

✦ sex ✦ ethnic

group

INEQUALITY AND POVERTY ■

Distribution in the UK size distribution ✜ functional ✜

✦ by

source ✦ by occupation ✜

inequality by person/household type ✦ household

composition

✦ sex ✦ ethnic

group ✦ location

Gross weekly household income: Selected UK regions: 2000/1 £650 £600 £550 £500 £450

UK (average)

London

South-East

Scotland

£250

North-East

£300

N. Ireland

£350

West Midlands

£400

£200

Source: Family spending (ONS,2002)

INEQUALITY AND POVERTY ■

Distribution in the UK size distribution ✜ functional ✜

✦ by

source ✦ by occupation ✜

inequality by person/household type ✦ household

composition

✦ sex ✦ ethnic

group ✦ location ✜

distribution of wealth

Composition of UK wealth Stocks and shares

Notes, coin and deposits with banks, etc.

Tenancy rights

Other fixed assets

Life assurance and pension funds

15% 26% 23%

23% 12% 7%

1971

– 6%

Dwellings (net of mortgage debt)

Other financial assets (net of liabilities)

Composition of UK wealth Stocks and shares

Notes, coin and deposits with banks, etc.

Tenancy rights

Other fixed assets

Life assurance and pension funds

Dwellings (net of mortgage debt)

Other financial assets (net of liabilities) 1%

15% 26%

– 6%

16% 35%

23%

14%

23% 12%

5% 26%

3%

7%

1971

2000

INEQUALITY AND POVERTY ■

The causes of inequality ✜ ✜

inequality of wealth differences in workers’ ability; qualifications ✦ attitudes ✦ hours worked ✦ economic power ✦ qualifications ✦

✜ ✜ ✜ ✜ ✜



differences in demand for goods differences in household composition discrimination degree of government support unemployment

Government attitudes towards inequality

Inequality and the Redistribution of Income

Taxes and Benefits

TAXES AND BENEFITS ■

Role of taxes and benefits ✜

redistribution of income



achievement of social efficiency



macroeconomic management



Requirements of a good tax system



Types of tax ✜

direct taxes



indirect taxes

Balance of taxation in different countries

TAXES AND BENEFITS ■

Taxes and the redistribution of income ✜

progressive taxes



regressive taxes (including lump-sum taxes)



proportional taxes

Different types of tax: (a) total tax paid Progressive

Total tax paid (T)

Regressive

Proportional Lump-sum

O Total income (Y)

Different types of tax: (b) average tax paid

Average tax paid (T/Y)

Progressive

Proportional

Regressive Lump-sum O Total income (Y)

TAXES AND BENEFITS ■



Taxes and the redistribution of income ✜

progressive taxes



regressive taxes (including lump-sum taxes)



proportional taxes

UK taxes and the redistribution of incomes ✜

direct taxes

UK marginal income tax and national insurance rates: 2002/3

UK marginal income tax and national insurance rates: 2002/3

UK marginal income tax and national insurance rates: 2002/3

UK average income tax plus national insurance rates: 2002/3

UK average and marginal rates of income tax for a single person: 2002/3 Marginal rate

Tax rate (%)

40

22

10

O

4615

6535

Individual’s pre-tax income (£)

34 515 (= 4615 + 29 900)

UK average and marginal rates of income tax for a single person: 2002/3 Marginal rate

Tax rate (%)

40

22

Average rate 10

O

4615

6535

Individual’s pre-tax income (£)

34 515 (= 4615 + 29 900)

Tax rate (%)

UK average and marginal rates of income tax plus NIC: 2002/3 Marginal rate

40 32 22 20

O

4535

6415

29 900

Individual’s pre-tax annual income (£)

33 935

Tax rate (%)

UK average and marginal rates of income tax plus NIC: 2002/3 Marginal rate

40 32

Average rate

22 20

O

4615

6535

30 420

Individual’s pre-tax annual income (£)

34 515

TAXES AND BENEFITS ■



Taxes and the redistribution of income ✜

progressive taxes



regressive taxes (including lump-sum taxes)



proportional taxes

UK taxes and the redistribution of incomes ✜

direct taxes



indirect taxes

TAXES AND BENEFITS ■

Problems in using taxes to redistribute incomes ✜

problems in achieving redistribution ✦ how ✦ tax

to help the very poor

evasion and avoidance

✦ undesired

incidence of taxation

Wage rate

Incidence of an income tax: elastic supply of labour

S W1

D O

Q1 Quantity of labour

Incidence of an income tax: elastic supply of labour

Wage rate

S + tax S W1

D O

Q1 Quantity of labour

Incidence of an income tax: elastic supply of labour

Wage rate

S + tax S W2 W1

D O

Q2

Q1 Quantity of labour

Incidence of an income tax: elastic supply of labour

Wage rate

S + tax S W2 W1

W2 - tax

D O

Q2

Q1 Quantity of labour

Incidence of an income tax: elastic supply of labour

Wage rate

S + tax S W2 W1

W2 - tax

A A: worker share of tax

D O

Q2

Q1 Quantity of labour

Incidence of an income tax: elastic supply of labour

Wage rate

S + tax S W2 W1

W2 - tax

B

B: employer share of tax

A

A: worker share of tax

D O

Q2

Q1 Quantity of labour

Incidence of an income tax: inelastic supply of labour

Wage rate

S

W1

D O

Q1 Quantity of labour

Incidence of an income tax: inelastic supply of labour

Wage rate

S + tax S

W2 W1

D O

Q2 Q1 Quantity of labour

Incidence of an income tax: inelastic supply of labour

Wage rate

S + tax S

W2 W1

W2 - tax

D O

Q2 Q1 Quantity of labour

Incidence of an income tax: inelastic supply of labour

Wage rate

S + tax S

W2 W1

W2 - tax

A

A: worker share of tax

D O

Q2 Q1 Quantity of labour

Incidence of an income tax: inelastic supply of labour

Wage rate

S + tax S

W2 W1

W2 - tax

B: employer share of tax B A

A: worker share of tax

D O

Q2 Q1 Quantity of labour

Incidence of an income tax: elastic supply of labour Incidence of an income tax: inelastic supply of labour S + tax S

S W2

W1 W2 - tax

B

B: employer share of tax

A

A: worker share of tax

Wage rate

Wage rate

S + tax

W2 W1

W2 - tax

B: employer share of tax B A

A: worker share of tax

D

D O

Q2 Q1 Quantity of labour

O

Q2 Q1 Quantity of labour

TAXES AND BENEFITS ■

Problems in using taxes to redistribute incomes ✜

problems in achieving redistribution ✦ how ✦ tax

to help the very poor

evasion and avoidance

✦ undesired



incidence of taxation

economic costs of redistribution

TAXES AND BENEFITS ■

Problems in using taxes to redistribute incomes ✜

problems in achieving redistribution ✦ how ✦ tax

to help the very poor

evasion and avoidance

✦ undesired



incidence of taxation

economic costs of redistribution ✦ distortionary

effects of taxes

TAXES AND BENEFITS ■

Problems in using taxes to redistribute incomes ✜

problems in achieving redistribution ✦ how ✦ tax

to help the very poor

evasion and avoidance

✦ undesired



incidence of taxation

economic costs of redistribution ✦ distortionary ✦ deadweight

effects of taxes

welfare loss of taxes

Indirect tax applied to good X £

S P1

D O

Q1

Quantity

Indirect tax applied to good X £ S + tax S Tax

P2 P1

D O

Q2

Q1

Quantity

Indirect tax applied to good X £ S + tax

S (=MC) P2 P1

P2 - tax

D O

Q2

Q1

Quantity

Indirect tax applied to good X £ S + tax C P2 P1

B

S (=MC) A

P2 - tax

D O

Q2

Q1

Quantity

Indirect tax applied to good X £ S + tax C P2 P1

P2 - tax

B E F

S (=MC) A

D

D O

Q2

Q1

Quantity

TAXES AND BENEFITS ■

Problems in using taxes to redistribute incomes ✜

problems in achieving redistribution ✦ how ✦ tax

to help the very poor

evasion and avoidance

✦ undesired



incidence of taxation

economic costs of redistribution ✦ distortionary ✦ deadweight

effects of taxes

welfare loss of taxes

✦ disincentives

Total tax revenue

A Laffer curve

0

100 Average tax rate (%)

A Laffer curve

Total tax revenue

R max.

0

t1 Average tax rate (%)

100

TAXES AND BENEFITS ■

Taxation and incentives ✜

income and substitution effects of higher taxes



different effects on different types of people



different types of tax increase ✦ raising

the higher rates of tax

✦ raising

the basic rate

✦ reducing



tax allowances

The effects of tax cuts

Tax cuts and incentives (a) The position with no income tax

Daily income

Ymax

Budget line O

Lmax Leisure (hours)

Tax cuts and incentives (a) The position with no income tax

Daily income

Ymax

I3 I2

Budget line O

I1 Lmax

Leisure (hours)

Tax cuts and incentives (a) The position with no income tax

Daily income

Ymax

Y*

I3 I2

Budget line O

L* Leisure (hours)

I1 Lmax

Tax cuts and incentives (b) The position with income tax

Daily income

Ymax

Y2

I4 Y1

I3

I2

I1

O

Lmax Leisure (hours)

Tax cuts and incentives (b) The position with income tax

Daily income

Ymax

Y2

Y**

b I4

Y1 O

I3

I2

I1 L** Leisure (hours)

Lmax

Tax cuts and incentives (b) The position with income tax

Daily income

Ymax

Y2

Y**

a b I4

Y1 O

I3

I2

I1 L* L** Leisure (hours)

Lmax

Tax cuts and incentives

Daily income

(c) Cut in the basic rate of tax

O Leisure (hours)

Tax cuts and incentives

Daily income

(c) Cut in the basic rate of tax

r Person W

O

LW 1 Leisure (hours)

Tax cuts and incentives

Daily income

(c) Cut in the basic rate of tax

s r Person W

O

LW 2 LW 1 Leisure (hours)

Tax cuts and incentives

Daily income

(c) Cut in the basic rate of tax

s r q

Person W

Person X O

LW 2 LW 1

LX

Leisure (hours)

Tax cuts and incentives

Daily income

(d) Increase in the tax threshold

r

t

O Leisure (hours)

Tax cuts and incentives

Daily income

(d) Increase in the tax threshold

O

L1 Leisure (hours)

Tax cuts and incentives

Daily income

(d) Increase in the tax threshold

O

L1 L2 Leisure (hours)

TAXES AND BENEFITS ■

Cash benefits ✜

means-tested benefits



universal benefits



Benefits in kind



Benefits and the redistribution of income

Social protection benefits in various European countries: (a) €per head 8000

1999

7000

5000 4000 3000 2000 1000

EU15

UK

Sweden

Spain

Portugal

Netherlands

Italy

Ireland

Greece

Germany

France

Denmark

0 Belgium

Euro per head

6000

Source: Eurostat, 2002

Social protection benefits in various European countries: (b) % of GDP 35

1990 30

1999

20 15 10 5

EU15

UK

Sweden

Spain

Portugal

Netherlands

Italy

Ireland

Greece

Germany

France

Denmark

0 Belgium

% of GDP

25

Source: Eurostat, 2002

TAXES AND BENEFITS ■



The problem of the poverty trap ✜

an argument for universal benefits



problems with universal benefits

The negative income tax system ✜

how it would work

A negative income tax system

A negative income tax system

A negative income tax system

A negative income tax system

TAXES AND BENEFITS ■



The problem of the poverty trap ✜

an argument for universal benefits



problems with universal benefits

The negative income tax system ✜

how it would work



advantages and disadvantages

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