Currency news

The exchange rate for sterling is determined in much the same way as the price of goods – by the interaction of demand and supply.

When factors change that cause residents abroad to want to hold more or fewer pounds, the demand curve for sterling will shift. If, instead, factors change that cause UK residents to want to buy more or less foreign currency, then the supply curve of sterling will shift. It is these two curves that determine the equilibrium exchange rate of sterling.

There are concerns at the moment that sterling is about to reach a peak, with expectations that the pound will weaken throughout 2013. But is a weakening exchange rate good or bad for the UK?

With lower exchange rates, exports become relatively more competitive. This should lead to an increase in the demand for UK products from abroad. As exports are a component of aggregate demand, any increase in exports will lead to the AD curve shifting to the right and thus help to stimulate a growth in national output. Indeed, throughout the financial crisis, the value of the pound did fall (see chart above: click here for a PowerPoint) and this led to the total value of UK exports increasing significantly. However, the volume of UK exports actually fell. This suggests that whilst UK exporters gained in terms of profitability, they have not seen much of an increase in their overall sales and hence their market share.

Therefore, while UK exporters may gain from a low exchange rate, what does it mean for UK consumers? If a low exchange rate cuts the prices of UK goods abroad, it will do the opposite for the prices of imported goods in the UK. Many goods that UK consumers buy are from abroad and, with a weak pound, foreign prices become relatively higher. This means that the living standards of UK consumers will be adversely affected by a weak pound, as any imported goods buy will now cost more.

It’s not just the UK that is facing questions over its exchange rate. Jean-Claude Junker described the euro as being ‘dangerously high’ and suggested that the strength or over-valuation of the exchange rate was holding the eurozone back from economic recovery. So far the ECB hasn’t done anything to steer its currency, despite many other countries, including Japan and Norway having already taken action to bring their currencies down. Mario Draghi, the ECB’s president, however, said that ‘both the real and the effective exchange rate of the euro are at their long-term average’ and thus the current value of the euro is not a major cause for concern.

So, whatever your view about intervening in the market to steer your currency, there will be winners and losers. Now that countries are so interdependent, any changes in the exchange rate will have huge implications for countries across the world. Perhaps this is why forecasting currency fluctuations can be so challenging. The following articles consider changes in the exchange rate and the impact this might have.

A pounding for sterling in 2013? BBC News, Stephanomics, Stephanie Flanders (17/1/13)
UK drawn into global currency wars as slump deepens Telegraph, Ambrose Evans-Pritchard (16/1/13)
Foreign currency exchange rate predictions for GBP EUR, Forecasts for USD and NZD Currency News, Tim Boyer (15/1/13)
Euro still looking for inspiration, Yen firm Reuters (16/1/13)
Daily summary on USD, EUR, JPY, GBP, AUD, CAD and NZD International Business Times, Roger Baettig (16/1/13)
UK inflation bonds surge on Index as pound falls versus euro Bloomberg, Business News, Lucy Meakin (10/1/13)


  1. Which factors will cause an increase in the demand for sterling? Which factors will cause a fall in the supply of sterling?
  2. In the article by Stephanie Flanders from the BBC, loose monetary policy is mentioned as something which is likely to continue. What does this mean and how will this affect the exchange rate?
  3. Explain the interest- and exchange-rate transmission mechanisms, using diagrams to help your answer.
  4. If sterling continues to weaken, how might this affect economic growth in the UK? Will there be any multiplier effect?
  5. What is the difference between the volume and value of exports? How does this relate to profit margins?
  6. Why are there suggestions that the euro is over-valued? Should European Finance Ministers be concerned?
  7. Should governments or central banks intervene in foreign exchange markets?
  8. If all countries seek to weaken their currencies in order to make their exports more competitive, why is this a zero-sum game?