Tag: aggregate demand

With university fees for home students in England of £9250 per year and with many students receiving maintenance loans of around £9000 per year, many students are graduating with debts in excess of £50 000. Loans are repaid at a marginal rate of 9% on incomes over £25 716.

Many students also study for a masters degree. The average fee for a taught, classroom-based masters (MA) is £7392 and for a laboratory-based masters (MSc) is £8167 but can be considerably higher at some prestigious universities where demand is high. Government loans of up to £10 906 are available to contribute towards fees and maintenance. These are paid back at a marginal rate of 6% for people earning over £21 000, giving a combined marginal rate of 15% for first and masters degrees.

For high earners on the 40% income tax rate, the combined marginal rate of payment out of income is 40% tax, plus 2% national insurance, plus 15% for those with undergraduate and masters loans. This gives a combined marginal rate of 57%.

Average student debt in England is higher even than in the USA, where the average is $37 000. US university courses are more expensive than in the UK, costing an average of $34 000 per year in tuition alone. But undergraduates can borrow less. They can borrow between $5500 and $12 500 per year in federal loans towards both fees and maintenance, and some private loans are also available. Most students do some paid work during their studies to make up the difference or rely on parents contributing. Parental contributions mean that students from poor families end up owing more. According to a Guardian article:

Race is a huge factor. Black students owe an average of $7400 more than white students when they graduate, the Brookings Institution found. After graduation, the debt gap continues to widen. Four years after graduation, black graduates owe an average of nearly $53 000 – nearly double that of white graduates.

Student debt looks to become one of the key issues in the 2020 US presidential election.

Pressure to cancel student fees and debt in the USA

Most of the Democratic candidates are promising to address student fees and debt. Student debt, they claim, places an unfair burden on the younger generation and makes it hard for people to buy a house, or car or other major consumer durables. This also has a dampening effect on aggregate demand.

The most radical proposal comes from Bernie Sanders. He has vowed, if elected, to abolish student fees and to cancel all undergraduate and graduate debt of all Americans. Other candidates are promising to cut fees and/or debt.

Although most politicians and commentators agree that the USA has a serious problem of student debt, there is little agreement on what, if anything, to do about it. There are already a number of ways in which student debt can be written off or reduced. For example, if you work in the public sector for more than 10 years, remaining debt will be cancelled. However, none of the existing schemes is as radical as that being proposed by many Democrats.

Criticisms of the Democrats’ plans are mainly of two types.

The first is the sheer cost. Overall debt is around $1.6tn. What is more, making student tuition free would place a huge ongoing burden on government finances. Bernie Sanders proposes introducing a financial transactions tax on stock trading. This would be similar to a Tobin tax (sometimes dubbed a ‘Robin Hood tax’) and would include a 0.5% tax on stock transactions, a 0.1% tax on bond trades and a 0.005% tax on transactions in derivatives. He argues that the public bailed out the financial sector in 2008 and that it is now the turn of the financial sector to come to the aid of students and graduates.

The other type of criticism concerns the incentive effects of the proposal. The core of the criticism is that loan forgiveness involves moral hazard.

The moral hazard of loan forgiveness

The argument is that cancelling debt, or the promise to do so, encourages people to take on more debt. Generally, moral hazard occurs when people are protected from the consequences of their actions and are thus encouraged to make riskier decisions. For example, if you are ensured against theft, you may be less careful with your belongings. As the Orange County Register article linked below states:

If the taxpayers pay the debts of everyone with outstanding student loans, how will that affect the decisions made by current students thinking about their choices for financing higher education? What’s the message? Borrow as much as you can and wait for the debt to be canceled during the next presidential primary campaign?

Not only would more students be encouraged to go to college, but they would be encouraged to apply for more costly courses if they were free.

Universities would be encouraged to exaggerate their costs to warrant higher fees charged to the government. The government (federal, state or local) would have to be very careful in auditing courses to ensure costs were genuine. Universities could end up being squeezed for finance as government may try to cut payments by claiming that courses were overpriced.

Even if fees were not abolished, cancelling debts would encourage students to take on larger debt, if that was to be cleared at some point in the future. What is more, students (or their parents) who could afford to pay, would choose to borrow the money instead.

But many countries do have free or highly subsidised higher education. Universities are given grants which are designed to reflect fair costs.




  1. Assess the arguments for abolishing or substantially reducing student fees.
  2. Assess the arguments against abolishing or substantially reducing student fees.
  3. Assess the arguments for writing off or substantially reducing student debt.
  4. Assess the arguments against writing off or substantially reducing student debt.
  5. If it were decided to cancel student debt, would it be fair to pay students back for any debt they had already paid off?
  6. Does tackling the problem of student debt necessarily lead to a redistribution of wealth/income?
  7. Give some other examples of moral hazard.
  8. If student fees were abolished, would there be any problem of adverse selection? If so, how could this be overcome?
  9. Find out what the main UK parties are advocating about student fees and debt in the nations of the UK for home and non-home students. Provide a critique of each of their policies.

Donald Trump has suggested that the Fed should cut interest rates by 1 percentage point and engage in a further round of quantitative easing. He wants to see monetary policy used to give a substantial boost to US economic growth at a time when inflation is below target. In a pair of tweets just before the meeting of the Fed to decide on interest rates, he said:

China is adding great stimulus to its economy while at the same time keeping interest rates low. Our Federal Reserve has incessantly lifted interest rates, even though inflation is very low, and instituted a very big dose of quantitative tightening. We have the potential to go up like a rocket if we did some lowering of rates, like one point, and some quantitative easing. Yes, we are doing very well at 3.2% GDP, but with our wonderfully low inflation, we could be setting major records &, at the same time, make our National Debt start to look small!

But would this be an appropriate policy? The first issue concerns the independence of the Fed.

It is supposed to take decisions removed from the political arena. This means sticking to its inflation target of 2 per cent over the medium term – the target it has officially had since January 2012. To do this, it adjusts the federal funds interest rate and the magnitude of any bond buying programme (quantitative easing) or bond selling programme (quantitative tightening).

The Fed is supposed to assess the evidence concerning the pressures on inflation (e.g. changes in aggregate demand) and what inflation is likely to be over the medium term in the absence of any changes in monetary policy. If the Federal Open Market Committee (FOMC) expects inflation to exceed 2 per cent over the medium term, it will probably raise the federal funds rate; if it expects inflation to be below the target it will probably lower the federal funds rate.

In the case of the economy being in recession, and thus probably considerably undershooting the target, it may also engage in quantitative easing (QE). If the economy is growing strongly, it may sell some of its portfolio of bonds and thus engage in quantitative tightening (QT).

Since December 2015 the Fed has been raising interest rates by 0.25 percentage points at a time in a series of steps, so that the federal funds rate stands at between 2.25% and 2.5% (see chart). And since October 2017, it has also been engaged in quantitative tightening. In recent months it has been selling up to $50 billion of assets per month from its holdings of around $4000 billion and so far has reduced them by around £500 billion. It has, however, announced that the programme of QT will end in the second half of 2019.

This does raise the question of whether the FOMC is succumbing to political pressure to cease QT and put interest rate rises on hold. If so, it is going against its remit to base its policy purely on evidence. The Fed, however, maintains that its caution reflects uncertainty about the global economy.

The second issue is whether Trump’s proposed policy is a wise one.

Caution about further rises in interest rates and further QT is very different from the strongly expansionary monetary policy that President Trump proposes. The economy is already growing at 3.2%, which is above the rate of growth in potential output, of around 1.8% to 2.0%. The output gap (the percentage amount that actual GDP exceeds potential GDP) is positive. The IMF forecasts that the gap will be 1.4% in 2019 and 1.3% in 2020 and 2021. This means that the economy is operating at above normal capacity working and this will eventually start to drive up inflation. Any further stimulus will exacerbate the problem of excess demand. And a large stimulus, as proposed by Donald Trump, will cause serious overheating in the medium term, even if it does stimulate growth in the short term.

For these reasons, the Fed resisted calls for a large cut in interest rates and a return to quantitative easing. Instead it chose to keep interest rates on hold at its meeting on 1 May 2019.

But if the Fed had done as Donald Trump would have liked, the economy would probably be growing very strongly at the time of the next US election in November next year. It would be a good example of the start of a political business cycle – something that is rarer nowadays with the independence of central banks.


FOMC meeting


  1. What are the arguments for central bank independence?
  2. Are there any arguments against central bank independence?
  3. Explain what is meant by an ‘output gap’? Why is it important to be clear on what is meant by ‘potential output’?
  4. Would there be any supply-side effects of a strong monetary stimulus to the US economy at the current time? If so, what are they?
  5. Explain what is meant by the ‘political business’ cycle? Are governments in the UK, USA or the eurozone using macroeconomic policy to take advantage of the electoral cycle?
  6. The Fed seems to be ending its programme of quantitative tightening (QT). Why might that be so and is it a good idea?
  7. If inflation is caused by cost-push pressures, should central banks stick rigidly to inflation targets? Explain.
  8. How are expectations likely to affect the success of a monetary stimulus?

Growth in the eurozone has slowed. The European Central Bank (ECB) now expects it to be 1.1% this year; in December, it had forecast a rate of 1.7% for 2019. Mario Draghi, president of the ECB, in his press conference, said that ‘the weakening in economic data points to a sizeable moderation in the pace of the economic expansion that will extend into the current year’. Faced with a slowing eurozone economy, the ECB has announced further measures to stimulate economic growth.

First it has indicated that interest rates will not rise until next year at the earliest ‘and in any case for as long as necessary to ensure the continued sustained convergence of inflation to levels that are below, but close to, 2% over the medium term’. The ECB currently expects HIPC inflation to be 1.2% in 2019. It was expected to raise interest rates later this year – probably by the end of the summer. The ECB’s main refinancing interest rate, at which it provides liquidity to banks, has been zero since March 2016, and so there was no scope for lowering it.

Second, although quantitative easing (the asset purchase programme) is coming to an end, there will be no ‘quantitative tightening’. Instead, the ECB will purchase additional assets to replace any assets that mature, thereby leaving the stock of assets held the same. This would continue ‘for an extended period of time past the date when we start raising the key ECB interest rates, and in any case for as long as necessary to maintain favourable liquidity conditions and an ample degree of monetary accommodation’.

Third, the ECB is launching a new series of ‘quarterly targeted longer-term refinancing operations (TLTRO-III), starting in September 2019 and ending in March 2021, each with a maturity of two years’. These are low-interest loans to banks in the eurozone for use for specific lending to businesses and households (other than for mortgages) at below-market rates. Banks will be able to borrow up to 30% of their eligible assets (yet to be fully defined). These, as their acronym suggests, are the third round of such loans. The second round was relatively successful. As the Barron’s article linked below states:

Banks boosted their long-term borrowing from the ECB by 70% over the course of the program, although they did not manage to increase their holdings of business loans until after TLTRO II had finished disbursing funds in March 2017.

Whether these measures will be enough to raise growth rates in the eurozone depends on a range of external factors affecting aggregate demand. Draghi identified three factors which could have a negative effect.

  • Brexit. The forecasts assume an orderly Brexit in accordance with the withdrawal deal agreed between the European Commission and the UK government. With the House of Commons having rejected this deal twice, even though it has agreed that there should not be a ‘no-deal Brexit’, this might happen as it is the legal default position. This could have a negative effect on the eurozone economy (as well as a significant one on the UK economy). Even an extension of Article 50 could create uncertainty, which would also have a negative effect
  • Trade wars. If President Trump persists with his protectionist policy, this will have a negative effect on growth in the eurozone and elsewhere.
  • China. Chinese growth has slowed and this dampens global growth. What is more, China is a major trading partner of the eurozone countries and hence slowing Chinese growth impacts on the eurozone through the international trade multiplier. The ECB has taken this into account, but if Chinese growth slows more than anticipated, this will further push down eurozone growth.

Then there are internal uncertainties in the eurozone, such as the political and economic uncertainty in Italy, which in December 2018 entered a recession (2 quarters of negative economic growth). Its budget deficit is rising and this is creating conflict with the European Commission. Also, there are likely to be growing tensions within Italy as the government raises taxes.

Faced with these and other uncertainties, the measures announced by Mario Draghi may turn out not to be enough. Perhaps in a few months’ there may have to be a further round of quantitative easing.



ECB publications


    • Investigate the history of quantitative easing and its use by the Fed, the Bank of England and the ECB. What is the current position of the three central banks on ‘quantitative tightening’, whereby central banks sell some of the stock of assets they have purchased during the process of quantitative easing or not replace them when they mature?
    • What are TLTROs and what use of them has been made by the ECB? Do they involve the creation of new money?
    • What will determine the success of the proposed TLTRO III scheme?
    • If the remit of central banks is to keep inflation on target, which in the ECB’s case means below 2% HIPC inflation but close to it over the medium term, why do people talk about central banks using monetary policy to revive a flagging economy?
    • What is ‘forward guidance’ by central banks and what determines its affect on aggregate demand?

Houses of Parliament: photo JSThe last two weeks have been quite busy for macroeconomists, HM Treasury staff and statisticians in the UK. The Chancellor of the Exchequer, Mr Phillip Hammond, delivered his (fairly upbeat) Spring Budget Statement on 13 March, highlighting among other things the ‘stellar performance’ of UK labour markets. According to a Treasury Press Release:

Employment has increased by 3 million since 2010, which is the equivalent of 1,000 people finding work every day. The unemployment rate is close to a 40-year low. There is also a joint record number of women in work – 15.1 million. The OBR predict there will be over 500,000 more people in work by 2022.

To put these figures in perspective, according to recent ONS estimates, in January 2018 the rate of UK unemployment was 4.3 per cent – down from 4.4 per cent in December 2017. This is the lowest it has been since 1975. This is of course good news: a thriving labour market is a prerequisite for a healthy economy and a good sign that the UK is on track to full recovery from its 2008 woes.

The Bank of England welcomed the news with a mixture of optimism and relief, and signalled that the time for the next interest rate hike is nigh: most likely at the next MPC meeting in May.

But what is the practical implication of all this for UK consumers and workers?

Money: photo JS

For workers it means it’s a ‘sellers’ market’: as more people get into employment, it becomes increasingly difficult for certain sectors to fill new vacancies. This is pushing nominal wages up. Indeed, UK wages increased on average by 2.6 per cent year-to-year.

In real terms, however, wage growth has not been high enough to outpace inflation: real wages have fallen by 0.2 per cent compared to last year. Britain has received a pay rise, but not high enough to compensate for rising prices. To quote Matt Hughes, a senior ONS statistician:

Employment and unemployment levels were both up on the quarter, with the employment rate returning to its joint highest ever. ‘Economically inactive’ people — those who are neither working nor looking for a job — fell by their largest amount in almost five and a half years, however. Total earnings growth continues to nudge upwards in cash terms. However, earnings are still failing to outpace inflation.

An increase in interest rates is likely to put further pressure on indebted households. Even more so as it coincides with the end of the five-year grace period since the launch of the 2013 Help-to-Buy scheme, which means that many new homeowners who come to the end of their five year fixed rate deals, will soon find themselves paying more for their mortgage, while also starting to pay interest on their Help-to-buy government loan.

Will wages grow fast enough in 2018 to outpace inflation (and despite Brexit, which is now only 12 months away)? We shall see.


Data, Reports and Analysis


  1. What is monetary policy, and how is it used to fine tune the economy?
  2. What is the effect of an increase in interest rates on aggregate demand?
  3. How optimistic (or pessimistic) are you about the UK’s economic outlook in 2018? Explain your reasoning.

On 2 November, the Bank of England raised Bank rate from 0.25% to 0.5% – the first rise since July 2007. But was now the right time to raise interest rates? Seven of the nine-person Monetary Policy Committee voted to do so; two voted to keep Bank Rate at 0.25%.

Raising the rate, on first sight, may seem a surprising decision as growth remains sluggish. Indeed, the two MPC members who voted against the rise argued that wage growth was too weak to justify the rise. Also, inflation is likely to fall as the effects of the Brexit-vote-induced depreciation of sterling on prices feeds through the economy. In other words, prices are likely to settle at the new higher levels but will not carry on rising – at least not at the same rate.

So why did the other seven members vote to raise Bank Rate. There are three main arguments:

Inflation, at 3%, is above the target of 2% and is likely to stay above the target if interest rates are not raised.
There is little spare capacity in the economy, with low unemployment. There is no shortage of aggregate demand relative to output.
With productivity growth being negligible and persistently below that before the financial crisis, aggregate demand, although growing slower than in the past, is growing excessively relative to the growth in aggregate supply.

As the Governor stated at the press conference:

In many respects, the decision today is straightforward: with inflation high, slack disappearing, and the economy growing at rates above its speed limit, inflation is unlikely to return to the 2% target without some increase in interest rates.

But, of course, the MPC’s forecasts may turn out to be incorrect. Many things are hard to predict. These include: the outcomes of the Brexit negotiations; consumer and business confidence and their effects on consumption and investment; levels of growth in other countries and their effects on UK exports; and the effects of the higher interest rates on saving and borrowing and hence on aggregate demand.

The Bank of England is well aware of these uncertainties. Although it plans two more rises in the coming months and then Bank Rate remaining at 1% for some time, this is based on its current assessment of the outlook for the economy. If circumstances change, the Bank will adjust the timing and total amount of future interest rate changes.

There are, however, dangers in the rise in interest rates. Household debt is at very high levels and, although the cost of servicing these debts is relatively low, even a rise in interest rates of just 0.25 percentage points can represent a large percentage increase. For example, a rise in a typical variable mortgage interest rate from 4.25% to 4.5% represents a 5.9% increase. Any resulting decline in consumer spending could dent business confidence and reduce investment.

Nevertheless, the Bank estimates that the effect of higher mortgage rates is likely to be small, given that some 60% of mortgages are at fixed rates. However, people need to refinance such rates every two or three years and may also worry about the rises to come promised by the Bank.


Bank of England deputy says interest rate rise means pain for households and more hikes could be in store Independent, Ben Chapman (3/11/17)
UK interest rates: Bank of England shrugs off Brexit nerves to launch first hike in over a decade Independent, Ben Chu (2/11/17)
Bank of England takes slow lane after first rate hike since Reuters, David Milliken, William Schomberg and Julian Satterthwaite (2/11/17)
First UK rate rise in a decade will be a slow burn Financial Times, Gemma Tetlow (2/11/17)
The Bank of England’s Rate Rise Could Spook Britain’s Economy Bloomberg, Fergal O’Brien and Brian Swint (3/11/17)
Bank of England hikes rates for the first time in a decade CNBC, Sam Meredith (2/11/17)
Interest rates rise in Britain for the first time in a decade The Economist (2/11/17)

Bank of England publications

Bank of England Inflation Report Press Conference, Opening Remarks Financial Times on YouTube, Mark Carney (2/11/17)
Bank of England Inflation Report Press Conference, Opening Remarks Bank of England, Mark Carney (2/11/17)
Inflation Report Press Conference (full) Bank of England on YouTube (2/11/17)
Inflation Report Bank of England (November 2017)
Monetary Policy Summary and minutes of the Monetary Policy Committee meeting ending on 1 November 2017 Bank of England (2/11/17)


  1. Why did the majority of MPC members feel that now was the right time to raise interest rates whereas a month ago was the wrong time?
  2. Why did the exchange rate fall when the announcement was made?
  3. How does a monetary policy of targeting the rate of inflation affect the balance between aggregate demand and aggregate supply?
  4. Can monetary policy affect potential output, or only actual output?
  5. If recent forecasts have downgraded productivity growth and hence long-term economic growth, does this support the argument for raising interest rates or does it suggest that monetary policy should be more expansionary?
  6. Why does the MPC effectively target inflation in the future (typically in 24 months’ time) rather than inflation today? Note that Mark Carney at the press conference said, “… it isn’t so much where inflation is now, but where it’s going that concerns us.”
  7. To what extent can the Bank of England’s monetary policy be described as ‘discretionary’?