Tag: price elasticity of demand

With droughts and poor harvests in both North America and in Russia and the Ukraine, there are worries that food prices are likely to see sharp rises in the coming months. This is clearly bad news for consumers, especially the poor for whom food accounts for a large proportion of expenditure.

But it’s also bad news more generally, as higher food prices are likely to have a dampening effect on the global economy, struggling to recover from five years of low or negative growth. And it’s not just food prices. Oil prices are rising again. Since mid June, they have risen by nearly 25%. This too is likely to have a dampening effect.

Another contributing factor to rising food prices is a response, in part, to rising oil prices. This is the diversion of land from growing food to growing crops for biofuels.

G20 countries held a conference call on 28 August to discuss food prices. Although representatives decided against an emergency meeting, they agreed to reassess the situation in a few weeks when the size of the US harvest would be clearer. If the situation proved as bad as feared, then the G20 would call an emergency meeting of the Rapid Response Forum, to consider what could be done.

But is the sole cause of rising food prices a lack of production? Are there other problems on the supply side, such as poor distribution systems and waste? And what about the role of demand? How is this contributing to long-term increases in food prices? The articles consider these various factors and what can be done to dampen food prices.

Articles
G20 points to ‘worrying’ food prices Financial Times, Javier Blas (28/8/12)
US food prices to surge on drought Gulf News(30/8/12)
Best to get used to high food and energy prices – they’re here to stay The Telegraph, Jeremy Warner (29/8/12)
Feeling a drought The Economist (14/8/12)
Q&A: World food and fuel prices BBC News (14/8/12)
G20 considers global meeting as food prices rise BBC News (28/8/12)
Biofuels and Food Prices (direct link) BBC ‘In the Balance’ programme (25/8/12)
U.N. body urges G20 action on food prices, waste Reuters, Patrick Lannin (27/8/12)
Ethanol industry hits back over food price claims EurActiv (28/8/12)
The era of cheap food may be over Guardian, Larry Elliott (2/9/12)

Data
Food Price Index Index Mundi

Questions

  1. Why have food prices been rising in recent weeks?
  2. Use a demand and supply diagram to demonstrate what has been happening to food prices.
  3. What determines the price elasticity of demand for wheat? What might this elasticity vary over time?
  4. What is the role of speculation in determining food prices?
  5. Illustrate on an aggregate demand and supply diagram the effect of a commodity price shock. What is likely to be the policy response from central banks?
  6. What determines the price elasticity of supply of food in (a) the short term and (b) the long term?
  7. What determines the cross price elasticity of supply of food to the price of oil? Is the cross price elasticity of supply positive or negative?
  8. What can governments do to reduce food prices, or at least reduce food price inflation?
  9. What benefits may come from higher food and fuel prices over the longer term?

Oil prices have been falling in recent months. By early June they had reached a 17-month low. The benchmark US crude price (the West Texas Intermediate price) fell to $83.2 at the beginning of the month, and Brent Crude (the North Sea reference price for refining into petrol) fell to $97.7 (see chart). (For a PowerPoint of the chart below, click here.)

At the same time various commodity prices have also been falling. The IMF all commodities price index has fallen by 7.2% over the past 12 months and by 6.2% in May alone. Some commodities have fallen much faster. In the 12 months to May 2012, natural gas fell by 44%, wheat by 25%, lamb by 37%, Arabica coffee by 36%, coconut oil by 45%, cotton by 47%, iron ore by 23% and tin by 29%.

Although part of the reason for the fall in the price of some commodities is increased supply, the main reason is weak world demand. And with continuing problems in the eurozone and a slowdown in China and the USA, commodity price weakness is likely to continue.

So is this good news? To the extent that commodity prices feed through into consumer prices and impact on the rate of inflation, then this is good news. As inflation falls, so central banks will be encouraged to make further cuts in interest rates (in the cases where they are not already at a minimum). For example, the Reserve Bank of Australia cut its cash rate last week from 3.75% to 3.5%. This follows on from a cut from 4.25% on 1 May. In cases where there is no further scope for interest rate cuts (e.g. the US Federal Reserve Bank, whose interest rate is between 0% and 0.25%), then the fall in inflation may encourage a further round of quantitative easing.

But falling commodity prices are also a reflection of bad news, namely the low economic growth of the world economy and fears of turmoil from a possible Greek exit from the euro.

Update
A day after this was written (9/6/12), a deal was agreed between eurozone ministers to provide support of up to €100 billion for Spanish banks. This helped to reduce pessimism about the world economy, at least temporarily. Stock markets rose and so too did oil prices, by around 1%. But if pessimism increases again, then the fall is likely to resume.

Articles

Oil prices hit a 17-month low on China slowdown fears BBC News (8/6/12)
Oil gives up gains without signs of Fed move BloombergBusinessweek, Sandy Shore (7/6/12)
Oil Heads for Longest Run of Weekly Losses in More Than 13 Years BloombergBusinessweek, (8/6/12)
Gold plunges as Bernanke gives no hint of stimulus Live5News(7/6/12)
Oil Price Tumbles Below $83 on Weak Economy Money News(8/6/12)
World food price index expected to fall for May Reuters(6/6/12)
Oil price losing streak continues Guardian, Julia Kollewe (8/6/12)

Data

Spot fuel prices US Energy Information Administration
Commodity Prices Index Mundi
Crude Oil Price Index Index Mundi

Questions

  1. Why have crude oil prices fallen to their lowest level for 17 months?
  2. How can the concepts of income elasticity of demand, price elasticity of supply and price elasticity of demand help to explain the magnitude of the fall in crude oil prices?
  3. Would a fall in inflation linked to a fall in commodity prices be a fall in cost-push or demand-pull inflation? Explain.
  4. What are the macroeconomic implications of the fall in crude oil prices?
  5. What factors are likely to have significant impact on crude oil prices in the coming months
  6. Why is it difficult to predict crude oil prices over the coming months?

The Office for Budget Responsibility has said that the UK Treasury will face a shortfall of £13bn in motoring taxes within a decade. Although car usage continues to rise putting increasing pressure on the road infrastructure, the greener and more fuel efficient cars being produced are driving down the tax revenues generated from motoring.

A report by the IFS has put forward the case for replacing the existing system of taxes on cars and fuel by a new road charging system. If no such change occurs, the IFS has forecast that with more electric cars and hence lower revenues raised from fuel and vehicle excise duties, the shortfall facing the Treasury would require an increase in fuel duty of some 50%. Instead of this, the solution could be to charge individuals for every mile of road they use, with the ‘price’ varying depending on the degree of congestion. For example, at peak times the price would be higher, where as for those in the countryside where roads are traditionally much quieter, charges would be lower. The IFS said:

‘Such a move would generate substantial economic efficiency gains from reduced congestion, reduce the tax levied on the majority of miles driven, leave many (particularly rural) motorists better off, and provide a stable long-term footing for motoring taxes without necessarily raising net additional revenue from drivers.’

Government policy across the world has been increasingly focused on climate change, with targets for emissions reductions being somewhat ambitious. However, many car manufactures who were told to reduce emissions significantly are on the way to meeting these targets and this success is a key factor contributing towards this new road ‘crisis’ that could soon be facing the government. The following articles consider the possibility of a road charging scheme.

Report
The road ahead for motoring taxes? Institute of Fiscal Studies (link to full report at the bottom of the page) (May 2012)

Articles
Compelling case for UK road charging, IFS study says BBC News (15/5/12)
Fears tax shortfall may lead to road tolls Sky News (15/5/12)
Who’s going to pay to update Britain’s infrastructure? Guardian Business Blog (15/5/12)
Motoring taxes: a future headache for the Chancellor Channel 4 News (15/5/12)
For whom the toll bills – less traffic hurts M6 toll road owner Guardian, Ian Griffiths and Dan Milmo (14/5/12)
Charge motorists per mile, says IFS Independent, Nigel Morris (15/5/12)
Green cars to drive down tax receipts Financial Times, Mark Odell and John Reed (15/5/12)

Questions

  1. Illustrate the effect of a tax being imposed on petrol. What happens to the equilibrium price and quantity?
  2. Despite fuel duty pushing up the price of petrol, why has there been such a small decline in the quantity of petrol individuals use?
  3. Evaluate the case for and against a road charging scheme.
  4. Why are tax revenues from motoring expected to decline over the next decade?
  5. Climate change has become an increasingly important focus of government policy. To what extent is the current road ‘crisis’ a positive sign that policies to tackle climate change are working?
  6. If a road charging scheme went ahead and prices were varied depending on traffic, time etc, what name would you give to this strategy?
  7. Why would it be possible to charge a higher price at peak times and a lower price for cars using country roads?
  8. Is there an argument for privatising the road network? Is it even possible?

Binge drinking is a problem that has seen much attention, especially with regards to minimum price controls. However, in this blog, we consider attention in this sector concerning taxation on beer.

Alcohol is widely considered to be a de-merit good with negative externalities imposing external costs on society. This is one of the reasons why taxes are imposed on alcoholic beverages. By increasing production costs to the firms providing these drinks, prices rise and hence the policy aims to discourage consumption.

During the recession, many businesses have seen demand fall and one sector hit particularly hard because of this and very high tax rates has been the local pub community. Duty on beer has increased since 2008 by some 42%. As such, many rural and suburban communities have seen their local watering holes close down and this has led to a campaign by CAMRA to force a debate in Parliament, as a means of protecting ‘one of Britain’s oldest and best loved institutions’. Data suggests that 12 pubs per week are closing down, thus the future of the industry is now under threat. This may also have further damaging effects on local communities, as it may adversely affect the social aspect of communities. Camra’s Chief Executive, Mike Benner said:

‘Whether situated in a small village, city high street, or on the edge of a housing estate, pubs are so central to our society that whole communities can grow around a particular pub.’

According to a study, pubs in Lancashire and the West Midlands have been hardest hit by the pub closures. If pubs don’t pass the tax increase on to consumers in the form of higher prices, then they must bear the burden. If they do pass the tax rises on to consumers then the larger chain firms can increase their market share by selling at a lower price. They are also facing growing pressure from the supermarket industry, which are able to sell cheap alcohol, also contributing to going to the pub becoming an ‘unaffordable activity’. The following articles consider this industry.

Pub closures spark beer tax plea The Press Association (30/4/12)
A dozen pubs close each week Telegraph, James Hall (30/4/12)
Calls for beer tax rethink as 12 pubs shut every week BBC Radio 1, News Beat, Steve Holden (30/4/12)
Pubs in the West Midlands hit hardest by pub closures ITV News (30/4/12)

Questions

  1. Illustrate the effect of a tax being imposed on a product such as beer.
  2. In this market, would the tax be more likely to be borne by the producers or consumers? Explain your answer and illustrate on the previous diagram why this is the case.
  3. Why are supermarkets able to compete local pubs out of the alcohol market? Do you think a minimum price will have any effect?
  4. What is a de-merit good? Illustrate the concept of a negative externality on a diagram.
  5. Explain how a de-merit good causes the market to fail. To what extent does the tax on beer solve the market failure?
  6. Why are there likely to be adverse effects on local communities? Could this have an adverse effect on economic activity in the area?