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Tax Incidence and the Efficiency Cost of Taxation
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Transcript of Tax Incidence and the Efficiency Cost of Taxation
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Tax Incidence and the Efficiency Cost of Taxation
Topic 9
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Outline1. The Economics of Taxation
• The role of taxation.• The main types of taxation.
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Outline1. The Economics of Taxation
• The role of taxation.• The main types of taxation.
2. The Efficiency Cost of Taxation• Marginal excess burden.• Marginal cost of public funds.
![Page 4: Tax Incidence and the Efficiency Cost of Taxation](https://reader034.fdocuments.net/reader034/viewer/2022051519/577cc7451a28aba711a07c82/html5/thumbnails/4.jpg)
Outline1. The Economics of Taxation
• The role of taxation.• The main types of taxation.
2. The Efficiency Cost of Taxation• Marginal excess burden.• Marginal cost of public funds.
3. Tax Incidence• Formal and effective incidence.• Tax capitalisation.
![Page 5: Tax Incidence and the Efficiency Cost of Taxation](https://reader034.fdocuments.net/reader034/viewer/2022051519/577cc7451a28aba711a07c82/html5/thumbnails/5.jpg)
Outline1. The Economics of Taxation
• The role of taxation.• The main types of taxation.
2. The Efficiency Cost of Taxation• Marginal excess burden.• Marginal cost of public funds.
3. Tax Incidence• Formal and effective incidence.• Tax capitalisation.
4. Equity: Efficiency Trade offs in the design of the Tax System• The structure of income taxes.• Trade offs btwn equity and efficiency.• Income distribution and the structure of commodity
taxes.
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1. The Role of Taxation
One potential classification of government functions – from an economic perspective would be
• Efficiency– To reduce distortions in competition.– To alleviate the problems of incomplete
markets
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1. The Role of Taxation
One potential classification of government functions – from an economic perspective would be
• Efficiency– To reduce distortions in competition.– To alleviate the problems of incomplete
markets• Equity
– To provide merit goods– To alleviate poverty.
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1. The Role of Taxation
One potential classification of government functions – from an economic perspective would be
• Efficiency– To reduce distortions in competition.– To alleviate the problems of incomplete markets
• Equity– To provide merit goods– To alleviate poverty.
• Stabilization (Macroeconomic Management)– To manage risks individuals face (insurance).– Macroeconomic stabilization
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Taxation has a role in each of these
1. Efficiency• Controls externalities.• Raises revenue for the provision of public goods.
2. Equity• Can redistribute income• Can generate revenues that provide other forms
of poverty alleviation.3. Stabilization
• A key instrument in controlling aggregate demand
• And the balance of trade
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Taxation and Politics
Tax policy is highly politicised (an important election issue).
Taxes signal societies values and approval/disapproval.
Often there are intertemporal issues (balancing the budget today versus long term growth).
Hidden taxes
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What are the criteria for a good tax system?
1. Fairness• Horizontal Equity• Vertical Equity
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What are the criteria for a good tax system?
1. Fairness• Horizontal Equity• Vertical Equity
2. Efficiency• Minimize the excess burden• Poll tax• Fiscal neutrality• The correction of externalities
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What are the criteria for a good tax system?
1. Fairness• Horizontal Equity• Vertical Equity
2. Efficiency• Minimize the excess burden• Poll tax• Fiscal neutrality• The correction of externalities
3. Compliance and Administration Costs• Compliance Costs = time, money
inconvenience• Administration costs
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UK Fiscal Revenues 2003-04 = £407 bn
Income Tax 122.130%
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UK Fiscal Revenues 2003-04 = £407 bn
Income Tax 122.130%
Corporation Tax 30.87.6%
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UK Fiscal Revenues 2003-04 = £407 bn
Income Tax 122.130%
Corporation Tax 30.87.6%
National Insurance 74.518.3%
Other Inland Revenue 13.03.2%
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UK Fiscal Revenues 2003-04 = £407 bn
Income Tax 122.130%Corporation Tax 30.8 7.6%National Insurance 74.5 18.3%Other Inland Revenue 13.0 3.2%VAT 66.6 16.4%Excise Duties – fuel 23.0 5.6% - tobacco 8.0
2.0% - alcohol 7.4 1.8%Other Customs & Excise 7.8 1.9%
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UK Fiscal Revenues 2003-04 = £407 bn
Income Tax 122.130%Corporation Tax 30.8 7.6%National Insurance 74.5 18.3%Other Inland Revenue 13.0 3.2%VAT 66.6 16.4%Excise Duties – fuel 23.0 5.6% - tobacco 8.0
2.0% - alcohol 7.4 1.8%Other Customs & Excise 7.8 1.9%Business Rates 18.6 4.6%Council Tax 18.6 4.6%Vehicle Excise Duties 4.8 1.2%Other 11.9 2.9%
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2. The Efficiency Costs of Taxation
Let us consider a Perfectly Competitive Market.In the Long Run we might treat supply as being a horizontal straight line.
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Equilibrium Before a Tax – P*Q*
Price
Quantity
Demand Curve
Supply CurveP*
Q*
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Now Introduce a Tax
Price
Quantity
Demand Curve
Supply CurveP*
Q*
Supply Curve including taxP**
Tax
Q**
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Some Obvious Consequences
1. Consumers are paying more for each unit. (bad)2. Government is earning taxes. (might be good)3. Consumers are buying fewer units. (bad)4. Firms are making fewer units. (Neutral here as
perfect competition implies they make zero profit)
How do these costs and benefits add up?
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Tax Revenue = Tax x Number of Units
Price
Quantity
Demand Curve
Supply CurveP*
Q*
Supply Curve including taxP**
Tax Revenue
Q**
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Tax Revenue = Exactly the losses of consumers who still buy
Price
Quantity
Demand Curve
Supply CurveP*
Q*
Supply Curve including taxP**
Extra Paid by Consumers
Q**
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This gain and loss exactly cancel
The tax revenue= The extra paid by the consumers who still buy the taxed commodity.
This is just a redistribution of income not an inefficiency.
Summary:One effect of taxes is to transfer resources to the government.This reduces taxpayers’ disposable incomes.
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The Substitution Effect
The price of this commodity has risen relative to other commodities.
• This affects the incentives of the private sector.• It distorts markets.
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The Substitution Effect
The price of this commodity has risen relative to other commodities.
• This affects the incentives of the private sector.• It distorts markets.
It generates “rents”A tax on tobacco makes growing it less attractive, therefore land prices fall.Tobacco machinery manufacturers lose as do tobacco workers.
(Any input into a taxed commodity suffers.)
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This person was prepared to pay this much for the good.
Price
Quantity
Demand Curve
Supply CurveP*
Q*
Supply Curve including taxP**
Q**
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Actually had to pay less.
Price
Quantity
Demand Curve
Supply CurveP*
Q*
Supply Curve including taxP**
Q**
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But after the tax did not buy the good so this value was lost
Price
Quantity
Demand Curve
Supply CurveP*
Q*
Supply Curve including taxP**
Q**
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Adding all these values then gives society’s total loss.
Price
Quantity
Demand Curve
Supply CurveP*
Q*
Supply Curve including taxP**
Q**
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The Excess BurdenThis inefficiency is called
“An Excess Burden”“A Deadweight Loss”
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The Excess BurdenThis inefficiency is called
“An Excess Burden”“A Deadweight Loss”
A poll tax (or any non-price related tax) will not have these costs.
A US estimate has 20-30% of every $ raised generates this much extra burden.
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The Excess BurdenMarginal Excess Burden := The excess burden of
an extra £ raised in taxes.(This is generally higher than the average burden,
as should tax least distorting commodities first.)
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The Excess BurdenMarginal Excess Burden := The excess burden of
an extra £ raised in taxes.(This is generally higher than the average burden,
as should tax least distorting commodities first.)
• A good tax system should impose taxes with least excess burden first.
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The Excess BurdenMarginal Excess Burden := The excess burden of
an extra £ raised in taxes.(This is generally higher than the average burden,
as should tax least distorting commodities first.)
• A good tax system should impose taxes with least excess burden first.
• Then move on to those taxes with higher excess burden.
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The Excess BurdenMarginal Excess Burden := The excess burden of
an extra £ raised in taxes.(This is generally higher than the average burden,
as should tax least distorting commodities first.)
• A good tax system should impose taxes with least excess burden first.
• Then move on to those taxes with higher excess burden.
• Optimally, the marginal excess burden of each tax instrument should be the same.
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3. Tax Incidence
In other words – who bears the burden of taxes?
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3. Tax Incidence
In other words – who bears the burden of taxes?
An important distinction:
Formal Incidence: Who is legally obliged to pay the tax.
Effective Incidence: Who actually bears the burden of the tax?
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3. Tax Incidence
In other words – who bears the burden of taxes?
An important distinction:
Formal Incidence: Who is legally obliged to pay the tax.
Effective Incidence: Who actually bears the burden of the tax?
These differ because prices can change as a result of a tax.
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Taxes On Business
All taxes formally incident on business will have their final incidence on customers, shareholders and employees:
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Taxes On Business
All taxes formally incident on business will have their final incidence on customers, shareholders and employees:
Sales Taxes – Are Passed on and affect prices and customers also output and employees.
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Taxes On Business
All taxes formally incident on business will have their final incidence on customers, shareholders and employees:
Sales Taxes – Are Passed on and affect prices and customers also output and employees.
Profits Tax – Affect shareholders and investment decisions (suppliers of capital).
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Taxes On Business
All taxes formally incident on business will have their final incidence on customers, shareholders and employees:
Sales Taxes – Are Passed on and affect prices and customers also output and employees.
Profits Tax – Affect shareholders and investment decisions (suppliers of capital).
Asset Taxes – Affect investment decisions.
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Effective Incidence is all that Matters to an Economist
Who is legally obliged to pay a tax – is largely irrelevant if the taxed individuals can take actions to mitigate the effects the tax has.
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The Effect of a Sales Tax on a Market
A market before a tax is imposed at equilibrium
PriceQs
QD
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The Effect of a Sales Tax on a Market
The tax raises the price paid by consumers.It lowers the price received by suppliers.
PriceQs
QD
TAX
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Why Does this Happen?
Suppose the firms tried to raise their prices and pass on all the tax increase to the consumers, then:
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Why Does this Happen?
Suppose the firms tried to raise their prices and pass on all the tax increase to the consumers, then:
(1) The higher price for consumers would mean they would choose to buy less.
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Why Does this Happen?
Suppose the firms tried to raise their prices and pass on all the tax increase to the consumers, then:
(1) The higher price for consumers would mean they would choose to buy less.(2) However, the firms would still want to supply the same amount.
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Why Does this Happen?
Suppose the firms tried to raise their prices and pass on all the tax increase to the consumers, then:
(1) The higher price for consumers would mean they would choose to buy less.(2) However, the firms would still want to supply the same amount.(3) The market has Supply > Demand and prices will fall.
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Why Does this Happen?
Suppose the firms tried to raise their prices and pass on all the tax increase to the consumers, then:
(1) The higher price for consumers would mean they would choose to buy less.(2) However, the firms would still want to supply the same amount.(3) The market has Supply > Demand and prices will fall.(4) Thus prices for firms will fall until
Supply(@Price less tax) = Demand (Price including tax)
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The Effect of a Sales Tax on a MarketNotice also – less goods are produced.
Some consumers don’t buy at the higher price.
Some sellers don’t produce at the lower price.
PriceQs
QD
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This reduces consumer surplus and producer surplus
P
Q s
QD
Lost consumer surplus
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This reduces consumer surplus and producer surplus
P
Q s
QD
Lost consumer surplus
Lost producer surplus
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But generates tax revenue
P
Q s
QD
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Giving a net loss in value of ½ t xQ
t
Q
P
Q s
QD
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WHO PAYS THE TAX?
When buyers are price sensitive “demand is elastic” it is the sellers who pay the tax.
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WHO PAYS THE TAX?
When buyers are price sensitive “demand is elastic” it is the sellers who pay the tax.
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WHO PAYS THE TAX?
When buyers are price sensitive “demand is elastic” it is the sellers who pay the tax.
Tax Incidence on Buyers
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WHO PAYS THE TAX?
When buyers are price sensitive “demand is elastic” it is the sellers who pay the tax.
Tax Incidence on Buyers
Tax Incidence on Sellers
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WHO PAYS THE TAX?
When sellers are price sensitive “supply is elastic” it is the buyers who pay the tax.
Tax Incidence on Buyers
Tax Incidence on Sellers
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Questions:
Who pays the taxes on
(1)Cigarettes(2)Alcohol(3)Petrol(4)Labour?
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Capitalization of Asset Taxes
If you own an asset and there is a permanent change in the asset’s price that reflects its changed tax status.
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Capitalization of Asset Taxes
If you own an asset and there is a permanent change in the asset’s price that reflects its changed tax status.
When the owner of the asset comes to sell it they get an increased/decreased price that reflects its changed tax status. Say “Tax changes have been capitalized”
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Capitalization of Asset Taxes
If you own an asset and there is a permanent change in the asset’s price that reflects its changed tax status.
When the owner of the asset comes to sell it they get an increased/decreased price that reflects its changed tax status. Say “Tax changes have been capitalized”
Any subsequent owner receives no benefits/costs of the taxes.
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Example
Land gets taxed:1. When you come to sell your land, it is of
reduced value because of its tax liability.
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Example
Land gets taxed:1. When you come to sell your land, it is of
reduced value because of its tax liability. 2. The price of land falls to include the total
cost of the taxes you must pay on it.
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Example
Land gets taxed:1. When you come to sell your land, it is of
reduced value because of its tax liability. 2. The price of land falls to include the total
cost of the taxes you must pay on it.3. Buyers will pay less.
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Example
Land gets taxed:1. When you come to sell your land, it is of reduced
value because of its tax liability. 2. The price of land falls to include the total cost of
the taxes you must pay on it.3. Buyers will pay less. 4. Only the initial owner pays the tax.5. There is a reduction of taxes on housing.
Only the owners at the time benefit.They gain twice (1) lower current taxes (2) higher eventual sale price.
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Policy Implications
One off asset tax increases have very big costs to current owners.
Even announcing a tax change is important as it will affect asset prices – even if the tax change does not eventually occur.
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4. Taxation and Equity
IF policy makes care about equity they will care about the winners and losers associated with tax changes.
RecallA tax is progressive if payment as a % of income
increases as income rises.A tax is regressive if payment as a % of income
decreases as income rises.A tax is neutral if payment as a % of income
constant as income rises.
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Distributional Effects of Taxes
We can assess the distributional effects of one tax or of the tax system as a whole.
• The overall incidence is more important than the effects of single taxes.
• But introducing progressive taxes may improve a regressive system.
• Remember it is still important to focus on the economic incidence of taxes not the formal incidence.
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Marginal versus Average Tax Rates
There are 2 distinct ways of achieving progressive tax systems:(1) Raise the marginal rate of taxes at higher income levels.
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Marginal versus Average Tax Rates
There are 2 distinct ways of achieving progressive tax systems:(1) Raise the marginal rate of taxes at higher income levels.(2) Allow some income to not be liable for taxes (a tax-free allowance).
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Increasing marginal rates
Example: 25% for first £30k and 50% tax rate thereafter.
Income
Marginal Tax Rate
25%
50%
Average Rate
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Example ContinuedYou earn £50k
Your tax bill = £30k x 0.25 = £7,500
Plus (£50k-£30k) x 0.50 = £10,000
= £17,500
Tax Rate = 17500/50000 = 35%
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Tax Free Allowance
Example: 0% for first £10k and 25% tax rate thereafter.
Income
Marginal Tax Rate
25%
Average Rate
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Can Achieve Progressive Sales Taxes
Tax luxuries more highly than necessities.
UK ( Children’s clothing, water, food, public transport).
Note the well paid also benefit a lot from these taxes (food).
They spend more on food – but it is a small chare in their budget.