According to the law of comparative advantage, trade can benefit all countries if they export goods which they can produce at lower opportunity costs than their trading partners. Trade enables all countries to consume beyond their production possibility frontier. What is more, trade can increase competition, which encourages firms to be more efficient.
That trade is beneficial has been generally accepted by governments around the world since the Second World War, with the General Agreement on Tariffs and Trade (GATT) and then the World Trade Organization (WTO) advocating the dismantling of trade barriers. Countries have participated in a series of trade ’rounds’, such as the Uruguay Round (1986–94) and most recently the Doha Round (2001–15). But since the financial crisis of 2008, there has been waning enthusiasm for freer trade and growing calls to protect strategic and/or vulnerable industries. To some extent this mirrors the growth in protection after the Great Depression of the early 1930s as countries sought to boost their own industries.
After some progress in the Doha round talks in Nairobi in December 2015, the talks effectively marked the end of a fourteen-year road for the round (see also). There was a failure to agree on a number of items and chances of resurrecting the talks seem slim.
The classic response to calls for protection is that it can lead to a trade war, with a net loss in global output as less efficient domestic industries are shielded from competition from lower-cost imports. Consumers lose from no longer having access to cheaper imported goods. Trade wars, it is argued, are a negative sum game. Any gains to one country are more than offset by losses elsewhere. In fact, it is likely that all countries will lose.
One argument for protection recognises the efficiency gains from free trade, but argues that current trade is distorted. For example, countries may subsidise the export of products in which they have a comparative disadvantage and dump them on the rest of the world. The WTO recognises this as a legitimate argument for tariffs, if they are used to offset the effect of the subsidies and make import prices more reflective of the cost of production.
But increasingly arguments go beyond this. Industries that are regarded as strategic to a country’s future, such as the steel industry or agriculture, are seen as warranting protection. With protection, investment may flow to such industries, making them more efficient and even gaining a comparative advantage at some point in the future.
Then there is the question of income distribution. Trade with poor countries may help to close the gap somewhat between rich and poor countries. The reason is that poor countries, with an abundance of labour, are likely to have a comparative advantage in labour-intensive products. The demand for exports of such products will help to drive up wages in such countries. However, income distribution within the rich countries may become less equal. Cheap imports from developing countries may depress the wages of unskilled or low-skilled workers in the rich countries.
Another argument concerns the devastation caused to communities by the closure of plants which are major employers. Workers made redundant may find it hard to find alternative employment, especially if their skills are specific to the plant that has closed. At least in the short term, it is argued that such industries warrant protection to allow time for alternative employers to be attracted into the area.
Arguments such as these are being used today in many countries as they struggle with slowing growth in China, a glut of global resources and overcapacity in certain industries.
The steel industry is a case in point. The announcement by Tata Steel that it intends to close the Port Talbot steel works has been met with consternation and calls for protection against subsidised Chinese steel imports. The USA already imposes tariffs of 256% on corrosion-resistant Chinese steel. The EU has proposed raising tariffs on Chinese steel to the full amount of the subsidy, but the UK has blocked this, not wishing to trigger a trade war with China. In the meantime, China has announced the imposition of a tariff of 46% on a particular type of hi-tech steel imported from the EU.
On the other side of the Atlantic, there have been growing protectionist calls from presidential front runners. Donald Trump and Ted Cruz on the Republican side, and Bernie Sanders and now Hilary Clinton on the Democratic side, are opposed to the trade agreement that President Obama has been seeking with the EU – the Transatlantic Trade and Investment Partnership (TTIP). Donald Trump has proposed imposing tariffs of 45% on all Chinese imports.

The following articles look at the growing calls for protection, especially against China, and at the arguments about what should be done to protect the UK and EU steel industry.
Articles
Defiant China slaps steel tariffs on Britain as trade war looms The Telegraph, Ambrose Evans-Pritchard (1/4/16)
China’s soaring steel exports may presage a trade war, The Economist (9/12/15)
Trade, at what price? The Economist (30/3/16)
Free trade in America: Open argument The Economist (2/4/16)
Can the British steel industry be saved? Financial Times (2/4/16)
Steel crisis: UK government plays down China tariff fears BBC News (2/4/16)
The dogmas destroying UK steel also inhibit future economic growth The Observer, WIll Hutton (3/4/16)
UK accused of leading efforts to block limits to Chinese steel dumping The Guardian, Frances Perraudin (1/4/16)
There’s always an excuse to justify suspending free trade – Tata is the latest The Telegraph, Allister Heath (1/4/16)
Can one of the world’s top economies live without making steel? Bloomberg, Thomas Biesheuvel (1/4/16)
Trade policy is no longer just for political nerds: it matters in the UK and US The Guardian, Larry Elliott (27/3/16)
Steel shrivels while Britain’s balance of payments crisis grows The Observer, WIlliam Keegan (3/4/16)
Trump’s tariff plan could boomerang, spark trade wars with China, Mexico Reuters, David Lawder and Roberta Rampton (24/3/16)
Analysis: A Trump trade war could cost the U.S. millions of jobs Daily Herald (Chicago), Jim Tankersley (3/4/16)
Questions
- What is meant by the ‘law of comparative advantage’? Does the law imply that countries will always gain from totally free trade?
- Demonstrate the gains for each of two countries which choose to trade with each other (see, for example, pages 711–3 in Economics, 9th edition).
- What is meant by ‘strategic trade theory’? How would such theory relate to the case of steel production in south Wales?
- What are the arguments for and against the EU imposing tariffs on Chinese steel imports equal to the subsidy given by the Chinese government?
- Is protectionism always a negative sum game? Explain.
- Assess the validity of various arguments for protection.
- Why did it prove impossible to complete the Doha round?
- What is meant by the ‘Transatlantic Trade and Investment Partnership (TTIP)’? Why is there so much opposition to it?
- Are bilateral trade deals, such as the TTIP, the best way of moving forward in reaping the gains from freer trade?
Back in October, we looked at the growing pressure in the UK for a sugar tax. The issue of childhood obesity was considered by the Parliamentary Health Select Committee and a sugar tax, either on sugar generally, or specifically on soft drinks, was one of the proposals being considered to tackle the problem. The committee studied a report by Public Health England, which stated that:
Research studies and impact data from countries that have already taken action suggest that price increases, such as by taxation, can influence purchasing of sugar sweetened drinks and other high sugar products at least in the short-term with the effect being larger at higher levels of taxation.
In his Budget on 16 March, the Chancellor announced that a tax would be imposed on manufacturers of soft drinks from April 2018. This will be at a rate of 18p per litre on drinks containing between 5g and 8g of sugar per 100ml, such as Dr Pepper, Fanta and Sprite, and 24p per litre for drinks with more than 8g per 100ml, such as Coca-Cola, Pepsi and Red Bull.
Whilst the tax has been welcomed by health campaigners, there are various questions about (a) how effective it is likely to be in reducing childhood obesity; (b) whether it will be enough or whether other measures will be needed; and (c) whether it is likely to raise the £520m in 2018/19, falling to £455m by 2020/21, as predicted by the Treasury: money the government will use for promoting school sport and breakfast clubs.
These questions are all linked. If demand for such drinks is relatively inelastic, the drinks manufacturers will find it easier to pass the tax on to consumers and the government will raise more revenue. However, it will be less effective in cutting sugar consumption and hence in tackling obesity. In other words, there is a trade off between raising revenue and cutting consumption.
This incidence of tax is not easy to predict. Part of the reason is that much of the market is a bilateral oligopoly, with giant drinks manufacturers selling to giant supermarket chains. In such circumstances, the degree to which the tax can be passed on depends on the bargaining strength and skill of both sides. Will the supermarkets be able to put pressure on the manufacturers to absorb the tax themselves and not pass it on in the wholesale price? Or will the demand be such, especially for major brands such as Coca-Cola, that the supermarkets will be willing to accept a higher price from the manufacturers and then pass it on to the consumer?
Then there is the question of the response of the manufacturers. How easy will it be for them to reformulate their drinks to reduce sugar content and yet still retain sales? For example, can they produce a product which tastes like a high sugar drink,
but really contains a mix between sugar and artificial sweeteners – effectively a hybrid between a ‘normal’ and a low-cal version? How likely are they to reduce the size of cans, say from 330ml to 300ml, to avoid raising prices?
The success of the tax on soft drinks in cutting sugar consumption depends on whether it is backed up by other policies. The most obvious of these would be to impose a tax on sugar in other products, including cakes, biscuits, low-fat yoghurts, breakfast cereals and desserts, and also many savoury products, such as tinned soups, ready meals and sauces. But there are other policies too. The Public Health England report recommended a national programme to educate people on sugar in foods; reducing price promotions of sugary food and drink; removing confectionery or other sugary foods from end of aisles and till points in supermarkets; setting broader and deeper controls on advertising of high-sugar foods and drinks to children; and reducing the sugar content of the foods we buy through reformulation and portion size reduction.
Articles
- Sugar tax: How it will work?
BBC News, Nick Triggle (16/3/16)
- Will a sugar tax actually work?
The Guardian, Alberto Nardelli and George Arnett (16/3/16)
- Coca-Cola and other soft drinks firms hit back at sugar tax plan
The Guardian, Sarah Butler (17/3/16)
- Sugar tax could increase calories people consume, economic experts warn
The Telegraph, Kate McCann, and Steven Swinford (17/3/16)
- Nudge, nudge! How the sugar tax will help British diets
Financial Times, Anita Charlesworth (18/3/16)
- Is the sugar tax an example of the nanny state going too far?
Financial Times (19/3/16)
- Government’s £520m sugar tax target ‘highly dubious’, analysts warn
The Telegraph, Ben Martin (17/3/16)
- Sorry Jamie Oliver, I’d be surprised if sugar tax helped cut obesity
The Conversation, Isabelle Szmigin (17/3/16)
- Sugar sweetened beverage taxes
What Works for Health (17/12/15)
Questions
- What determines the price elasticity of demand for sugary drinks in general (as opposed to one particular brand)?
- How are drinks manufacturers likely to respond to the sugar tax?
- How are price elasticity of demand and supply relevant in determining the incidence of the sugar tax between manufacturers and consumers? How is the degree of competition in the market relevant here?
- What is meant by a socially optimal allocation of resources?
- If the current consumption of sugary drinks is not socially optimal, what categories of market failure are responsible for this?
- Will a sugar tax fully tackle these market failures? Explain.
- Is a sugar tax progressive, regressive or proportional? Explain.
- Assess the argument that the tax on sugar in soft drinks may actually increase the amount that people consume.
- The sugar tax can be described as a ‘hypothecated tax’. What does this mean and is it a good idea?
- Compare the advantages and disadvantages of a tax on sugar in soft drinks with (a) banning soft drinks with more than a certain amount of sugar per 100ml; (b) a tax on sugar; (c) a tax on sugar in all foods and drinks.
During the 1970s, commentators often referred to the ‘political business cycle’. As William Nordhaus stated in a 1989 paper. “The theory of the political business cycle, which analyzes the interaction of political and economic systems, arose from the obvious facts of life that voters care about the economy while politicians care about power.”
In the past, politicians would use fiscal, and sometimes monetary, policies to manipulate aggregate demand so that the economy was growing strongly at the time of the next election. This often meant doing unpopular things in the first couple of years of office to allow for popular things, such as tax cuts and increased government transfers, as the next election approached. This tended to align the business cycle with the election cycle. The economy would slow in the early years of a parliament and expand rapidly towards the end.
To some extent, this has been the approach since 2010 of first the Coalition and now the Conservative governments. Cuts to government expenditure were made ‘in order to clear up the mess left by the previous government’. At the time it was hoped that, by the next election, the economy would be growing strongly again.
But in adopting a fiscal mandate, the current government could be doing the reverse of previous governments. George Osborne has set the target of a budget surplus by the final year of this parliament (2019–20) and has staked his reputation on achieving it.
The problem, as we saw in the blog, Hitting – or missing – the government’s self-imposed fiscal targets is that growth in the economy has slowed and this makes it more difficult to achieve the target of a budget surplus by 2019–20. Given that achieving this target is seen to be more important for his reputation for ‘sound management’ of the public finances than that the economy should be rapidly growing, it is likely that the Chancellor will be dampening aggregate demand in the run-up to the next election. Indeed, in the latest Budget, he announced that specific measures would be taken in 2019–20 to meet the target, including a further £3.5 billion of savings from departmental spending in 2019–20. In the meantime, however, taxes would be cut (such as increasing personal allowances and cutting business rates) and government spending in certain areas would be increased. As the OBR states:
Despite a weaker outlook for the economy and tax revenues, the Chancellor has announced a net tax cut and new spending commitments. But he remains on course for a £10 billion surplus in 2019–20, by rescheduling capital investment, promising other cuts in public services spending and shifting a one-off boost to corporation tax receipts into that year.
But many commentators have doubted that this will be enough to bring a surplus. Indeed Paul Johnson, Director of the Institute for Fiscal Studies, stated on BBC Radio 4’s Today Programme said that “there’s only about a 50:50 shot that he’s going to get there. If things change again, if the OBR downgrades its forecasts again, I don’t think he will be able to get away with anything like this. I think he will be forced to put some proper tax increases in or possibly find yet further proper spending cuts”.
If that is the case, he will be further dampening the economy as the next election approaches. In other words, the government may be doing the reverse of what governments did in the past. Instead of boosting the economy to increase growth at election time, the government may feel forced to make further cuts in government expenditure and/or to raise taxes to meet the fiscal target of a budget surplus.
Articles
Budget 2016: George Osborne hits back at deficit critics BBC News (17/3/16)
George Osborne will have to break his own rules to win the next election Business Insider, Ben Moshinsky (17/3/16)
Osborne Accused of Accounting Tricks to Meet Budget Surplus Goal Bloomberg, Svenja O’Donnell and Robert Hutton (16/3/16)
George Osborne warns more cuts may be needed to hit surplus target Financial Times, Jim Pickard (17/3/16)
6 charts that explain why George Osborne is about to make austerity even worse Independent, Hazel Sheffield (16/3/16)
Budget 2016: Osborne ‘has only 50-50 chance’ of hitting surplus target The Guardian, Heather Stewart and Larry Elliott (17/3/16)
How will Chancellor George Osborne reach his surplus? BBC News, Howard Mustoe (16/3/16)
Osborne’s fiscal illusion exposed as a house of credit cards The Guardian, Larry Elliott (17/3/16)
The Budget’s bottom line: taxes will rise and rise again The Telegraph, Allister Heath (17/3/16)
Reports, analysis and documents
Economic and fiscal outlook – March 2016 Office for Budget Responsibility (16/3/16)
Budget 2016: documents HM Treasury (16/3/16)
Budget 2016 Institute for Fiscal Studies (17/3/16)
Questions
- Explain the fiscal mandate of the Conservative government.
- Does sticking to targets for public-sector deficits and debt necessarily involve dampening aggregate demand as an election approaches? Explain.
- For what reasons may the Chancellor not hit his target of a public-sector surplus by 2019–20?
- Compare the advantages and disadvantages of a rules-based fiscal policy and one based on discretion.
On election to office in May 2015, the UK’s Conservative government set new fiscal targets. These were set out in an updated Charter for Budget Responsibility. As Box 12.3 in Essentials of Economics (7th edition) states:
The new fiscal mandate set a target for achieving a surplus on public-sector net borrowing by the end of 2019/20. More controversially, government should then target a surplus in each subsequent year unless real GDP growth falls below 1 per cent … Meanwhile, the revised supplementary target for public-sector debt was for the net debt-to-GDP ratio to fall each year from 2015/16 to 2019/20.
What is more, the Charter requires the government to set a cap on welfare spending over a five-year period.
Such spending includes spending on pensions, tax credits, child benefit and unemployment benefit. In July 2015 the Chancellor set this cap at £115bn for 2016/17, a reduction of £12bn.
Whether or not such a tight fiscal target is desirable, the government has been missing the target. In November last year, the Chancellor had to backtrack on his plans to make substantial reductions in tax credits and as a result the welfare cap has been breached, as the following table from page 5 of the December 2015 House of Commons briefing paper shows.

Also, with the slowing of economic growth, the Chancellor has stated that he will miss the requirement for a fall in the net debt-to-GDP ratio unless further cuts in government spending are made, equivalent to 50p in every £100.
But, if the economy is slowing, is it right to cut government expenditure? In other words, should there be some discretion in fiscal policy to respond to economic circumstances? There are two issues here. The first is whether the resulting cut in aggregate demand will be detrimental to growth. The second is who will bear the cost of such cuts. Critics of the government claim that it will largely the poor who will lose if the cuts are made mainly from benefits.
The articles below examine the public finances, the difficulties George Osborne has been facing in sticking to his fiscal mandate and the options open to him.
Articles
Budget 2016: Osborne’s economic fitness regime BBC News, Andy Verity (14/3/16)
Budget 2016: George Osborne fuels speculation of nasty shocks The Guardian, Larry Elliott and Anushka Asthana (14/3/16)
Official publications
Charter for Budget Responsibility: Summer Budget 2015 update HM Treasury (July 2015)
OBR publications, including ‘Economic and fiscal outlook’ and ‘Fiscal sustainability report’ Office for Budget Responsibility
Questions
- Outline the main points of the Charter for Budget Responsibility (CBR).
- What are the arguments for sticking to fiscal rules, such as those in the CBR?
- What are the arguments for using discretion to adjust fiscal policy as economic circumstances change?
- Compare the Conservative government’s fiscal mandate with the newly announced approach to fiscal policy of the Labour opposition?
- How does the Labour Party’s new approach differ from the Golden Rule followed by Gordon Brown as Chancellor in the Labour government from 1997 to 2007?
- What factors will determine whether or not the government will return to meeting the rules set out in the Charter for Budget Responsibility?
In June 2014, the Gas and Electricity Markets Authority (which governs the energy regulator, Ofgem) referred Great Britain’s retail and wholesale gas and electricity markets to the Competition and Markets Authority (CMA). The market is dominated by the ‘big six‘ energy companies (British Gas, EDF, E.ON, npower, Scottish Power and SSE) and Ofgem suspected that this oligopoly was distorting competition and leading to higher prices.
The CMA presented its report on 10 March 2016. It confirmed its preliminary findings of July and December 2015 “that there are features of the markets for the supply of energy in Great Britain that result in an adverse effect on competition”. It concludes that “the average customer could save over £300 by switching to a cheaper deal” and that “customers could have been paying about £1.7 billion a year more than they would in a competitive market”.
It made various recommendations to address the problem. These include “requiring the largest suppliers to provide fuller information on their financial performance” and strengthening the role of Ofgem.
Also the CMA wants to encourage more people to switch to cheaper suppliers. At present, some 70% of the customers of the big six are on default standard variable tariffs, which are more expensive than other tariffs available. To address this problem, the CMA proposes the setting up of “an Ofgem-controlled database which will allow rival suppliers to contact domestic and microbusiness customers who have been stuck on their supplier’s default tariff for 3 years or more with better deals.”
Another area of concern for the CMA is the 4 million people (16% of customers) forced to have pre-payment meters. These tend to be customers with poor credit records, who also tend to be on low incomes. Such customers are paying more for their gas and electricity and yet have little opportunity to switch to cheaper alternatives.
For these customers the CMA proposed imposing transitional price controls from no later than April 2017 until 2020. These would cut typical bills by some £80 to £90 per year. In the meantime, the CMA would seek to remove “restrictions on the ability of new suppliers to compete for prepayment customers and reduce barriers such as debt issues that make it difficult for such customers to switch”.
Despite trying to address the problem of lack of competition, consumer inertia and barriers to entry, the CMA has been criticised for not going further. It has also been criticised for the method it has chosen to help consumers switch to cheaper alternative suppliers and tariffs. The articles below look at these criticisms.
Podcast
Competition and Markets Authority Energy Report BBC You and Yours (10/3/16)
Articles
Millions could see cut in energy bills BBC News (10/3/16)
Shake-up of energy market could save customers millions, watchdog says The Telegraph, Jillian Ambrose (10/3/16)
UK watchdog divided over energy market reforms Financial Times, Kiran Stacey (10/3/16)
How the CMA energy inquiry affects you Which? (10/3/16)
UK watchdog accused of bowing to pressure from ‘big six’ energy suppliers The Guardian, Terry Macalister (10/3/16)
CMA documents
CMA sets out energy market changes CMA press release (10/3/16)
Energy Market Investigation: Summary of provisional remedies Competition and Markets Authority (10/3/16)
Questions
- Find out the market share of the ‘big six’ and whether this has changed over the past few years.
- What, if any, are the barriers to entry in the gas and electricity retail markets?
- Why are the big six able to charge customers some £300 per household more than would be the case if they were on the cheapest deal?
- What criticisms have been made of the CMA’s proposals?
- Discuss alternative proposals to those of the CMA for dealing with the problem of excessive prices of gas and electricity.
- Should Ofgem or another independent not-for-profit body be allowed to run its own price comparison and switching service? Would this be better than the CMA’s proposal for allowing competitors access to people’s energy usage after 3 years of being with the same company on its standard tariff and allowing them to contact these people?