Tag: cost-push inflation

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Why raise interest rates to tackle cost-push inflation?

We have examined inflation in several blogs in recent months. With inflation at levels not seen for 40 years, this is hardly surprising. One question we’ve examined is whether the policy response has been correct. For example, in July, we asked whether the Bank of England had raised interest rates too much, too late. In judging policy, one useful distinction is between demand-pull inflation and cost-push inflation. Do they require the same policy response? Is raising interest rates to get inflation down to the target rate equally applicable to inflation caused by excessive demand and inflation caused by rising costs, where those rising costs are not caused by rising demand?

In terms of aggregate demand and supply, demand-pull inflation is shown by continuing rightward shifts in aggregate demand (AD); cost-push inflation is shown by continuing leftward/upward shifts in short-run aggregate supply (SRAS). This is illustrated in the following diagram, which shows a single shift in aggregate demand or short-run aggregate supply. For inflation to continue, rather than being a single rise in prices, the curves must continue to shift.

As you can see, the effects on real GDP (Y) are quite different. A rise in aggregate demand will tend to increase GDP (as long as capacity constraints allow). A rise in costs, and hence an upward shift in short-run aggregate supply, will lead to a fall in GDP as firms cut output in the face of rising costs and as consumers consume less as the cost of living rises.

The inflation experienced by the UK and other countries in recent months has been largely of the cost-push variety. Causes include: supply-chain bottlenecks as economies opened up after COVID-19; the war in Ukraine and its effects on oil and gas supplies and various grains; and avian flu and poor harvests from droughts and floods associated with global warming resulting in a fall in food supplies. These all led to a rise in prices. In the UK’s case, this was compounded by Brexit, which added to firms’ administrative costs and, according to the Bank of England, was estimated to cause a long-term fall in productivity of around 3 to 4 per cent.

The rise in costs had the effect of shifting short-run aggregate supply upwards to the left. As well as leading to a rise in prices and a cost-of-living squeeze, the rising costs dampened expenditure.

This was compounded by a tightening of fiscal policy as governments attempted to tackle public-sector deficits and debt, which had soared with the support measures during the pandemic. It was also compounded by rising interest rates as central banks attempted to bring inflation back to target.

Monetary policy response

Central banks are generally charged with keeping inflation in the medium term at a target rate set by the government or the central bank itself. For most developed countries, this is 2% (see table in the blog, Should central bank targets be changed?). So is raising interest rates the correct policy response to cost-push inflation?

One argument is that monetary policy is inappropriate in the face of supply shocks. The supply shocks themselves have the effect of dampening demand. Raising interest rates will compound this effect, resulting in lower growth or even a recession. If the supply shocks are temporary, such as supply-chain disruptions caused by lockdowns during the pandemic, then it might be better to ride out the problem and not raise interest rates or raise them by only a small amount. Already cost pressures are easing in some areas as supplies have risen.

If, however, the fall in aggregate supply is more persistent, such as from climate-related declines in harvests or the Ukraine war dragging on, or new disruptions to supply associated with the Israel–Gaza war, or, in the UK’s case, with Brexit, then real aggregate demand may need to be reduced in order to match the lower aggregate supply. Or, at the very least, the growth in aggregate demand may need to be slowed to match the slower growth in aggregate supply.

Huw Pill, the Chief Economist at the Bank of England, in a podcast from the Columbia Law School (see links below), argued that people should recognise that the rise in costs has made them poorer. If they respond to the rising costs by seeking higher wages, or in the case of businesses, by putting up prices, this will simply stoke inflation. In these circumstances, raising interest rates to cool aggregate demand may reduce people’s ability to gain higher wages or put up prices.

Another argument for raising interest rates in the face of cost-push inflation is when those cost increases are felt more than in other countries. The USA has suffered less from cost pressures than the UK. On the other hand, its growth rate is higher, suggesting that its inflation, albeit lower than in the UK, is more of the demand-pull variety. Despite its inflation rate being lower than in the UK, the problem of excess demand has led the Fed to adopt an aggressive interest rate policy. Its target rate is 5.25% to 5.50%, while the Bank of England’s is 5.25%. In order to prevent short-term capital outflows and a resulting depreciation in the pound, further stoking inflation, the Bank of England has been under pressure to mirror interest rate rises in the USA, the eurozone and elsewhere.

Articles

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Information and data

Questions

  1. How may monetary policy affect inflationary expectations?
  2. If cost-push inflation makes people generally poorer, what role does the government have in making the distribution of a cut in real income a fair one?
  3. In the context of cost-push inflation, how might the authorities prevent a wage–price spiral?
  4. With reference to the second article above, explain the ‘monetary policy conundrum’ faced by the Bank of Japan.
  5. If central banks have a single policy instrument, namely changes in interest rates, how may conflicts arise when there is more than one macroeconomic objective?
  6. Is Russia’s rise in inflation the result of cost or demand pressures, or a mixture of the two (see articles above)?
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Inflation targeting and policy trade-offs

The mandates of central banks around the world are typically focused on controlling inflation. In many cases, this is accompanied by operational independence from government, but with the government setting an inflation target. The central bank then chooses the appropriate monetary policy to achieve the inflation target. This is argued to provide the conditions that can deliver lower and less variable inflation rates – at least over the longer term.

However, some economists argue that this has the potential to create the conditions for greater economic volatility and financial instability. The events surrounding the collapse of Silicon Valley Bank (SVB) – the largest since the global financial crisis – have helped to reignite these debates.

Inflation targeting central banks

The theoretical foundations for delegating monetary policy to central banks with mandates to meet an inflation rate target is often attributed to the paper of Fynn Kydland and Edward Prescott published in the Journal of Political Economy in 1977. It argues that if governments, rather than independent central banks, operate monetary policy, systemically-high inflation can become established if low-inflation announcements by governments lack credibility. Delegation of monetary to a central bank with an inflation rate target, however, can create the necessary conditions for credibility. This, in turn, gives the public confidence to maintain lower and more stable inflationary expectations than would otherwise be the case.

To mitigate the problem of a potential inflationary bias, it is argued that governments should delegate monetary policy to a conservative central banker: one that places less weight on output or employment stabilisation and more weight on inflation stabilisation than does society. However, as identified by Kenneth Rogoff in his paper published in the Quarterly Journal of Economics in 1985, this raises the spectre of greater volatility in output and employment when economies are buffeted by supply shocks.

Inflation–output stabilisation trade-off

The inflation–output stabilisation trade-off identified by Rogoff has particular relevance to the macroeconomic environment experienced by many countries in recent times. As economies began to open up after the pandemic, demand–supply imbalances saw the emergence of inflationary pressures. These pressures were then exacerbated by the Russian invasion of Ukraine, which drove up commodity prices.

Rather than pursuing a less contractionary policy in the face of these supply shocks so as to avoid recession, central banks stuck to their inflation mandates and hence raised interest rates significantly so as to bring inflation back to target as soon as possible. But this hampered economic recovery.

Inflation–financial stability trade-off

Yet the recent financial turmoil suggests a further inflation–stability trade-off: an inflation–financial stability trade-off. By raising interest rates, different sectors of the economy are liable to greater financial distress. This distress has contributed to the collapse of Silicon Valley Bank and Signature Bank, and led to a significant injection of funds by large US banks into First Republic. The fear is of a contagion within the financial sector, which then spills into other sectors of the economy.

The debate about central bank mandates and the weight attached to inflation stability relative to other objectives is therefore centre stage of macroeconomic policy debates.

Articles

Questions

  1. Explain the argument that the delegation of monetary policy can help to keep the average rate of inflation lower.
  2. How might the monetary policy responses of central banks to an inflation shock create the possibility of an inflation–output stabilisation trade-off?
  3. What do you understand by a Taylor rule? Could this help to alleviate the inflation-output stabilisation trade-off?
  4. Some economists argue that there is less of a trade-off between inflation and output stability with demand-pull inflation because of a so-called ‘divine coincidence’ in monetary policy. Why might this be the case?
  5. What do you understand by the term ‘financial distress’? What metrics could be used to capture this for different sectors of the economy?
  6. Explain how financial contagion can spread both within and between different sectors of the economy.
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Looming stagflation


Aggregate demand has been booming as the world bounces back from the pandemic. At the same time, aggregate supply is severely constrained. These supply constraints are making potential national income smaller – at least temporarily. The result is that many countries are heading for recession.

At the same time, supply constraints are causing prices to rise, especially energy and food prices. This cost-push inflation is made worse by the rises in aggregate demand.

The result is ‘stagflation’ – a recession, or stagnation, accompanied by high inflation. In the UK, the latest Bank of England Monetary Policy Report forecast that by the end of 2022, CPI inflation would be 13.1% and that in 2023, real GDP would fall by 1.5%.

This effect of an adverse supply shock accompanied by relatively buoyant aggregate demand (at least initially) can be illustrated with an aggregate demand and supply diagram. The supply shock is illustrated by an upward shift to the left of the short-run aggregate supply curve (SRAS). (If the shock is a direct rise in prices, then it can be seen as a vertical upward shift. If it is a fall in the total amount supplied, then it can be seen as a horizontal leftward shift.) In the diagram, aggregate supply shifts from SRAS1 to SRAS2. The price level rises from P1 to P2. If costs go on rising or supply goes on falling then the curve will go on shifting upwards to the left.

If the government responds by increasing benefits or reducing taxes, then, other things being
equal, aggregate demand will rise. In the diagram, the AD curve will shift to the right, e.g. from AD1 to AD2. Real GDP only falls to Y3 not Y2. However, the price level rises further: from P2 to P3.

Why has aggregate supply fallen?

There are several factors that have contributed to the fall in aggregate supply/rise in costs.

  • Stretched supply chains, which had been adversely affected by Covid. Congestion at container ports has led to delays, with warehouses and shops being short of stock.
  • Labour shortages, with many people not returning to the labour force after being laid off or furloughed, or only returning part time, leaving firms needing more people. The problem has been particularly acute in the UK, with many EU citizens having returned to the EU after Brexit and the UK having to rely increasingly on staff from outside the EU.
  • The war in Ukraine. This has had a major impact on the supply of natural gas and oil. The war has also led to a fall in grain and other food supplies from Ukraine, as ports have been blockaded and there have been disruptions to planting and harvesting.
  • Climate change is causing more severe weather events, such as droughts in Europe and western USA. The droughts of 2022 will compound the problem of food shortages and food price inflation.
  • In the UK, Brexit costs, such as increased administrative burdens and difficulties in both exporting and importing, have dampened production and hence adversely impacted on aggregate supply.
  • Increased industrial action. As the cost of living soars, unions are demanding pay increases to match the rise in the cost of living. Pay rises further increase firms’ costs – and the bigger the pay rises, the bigger the rise in costs.

The problem with a fall in aggregate supply is that it reduces real GDP. People as a whole are poorer. To use a common analogy, the national ‘pie’ has shrunk. Giving everyone a bigger knife and fork (i.e. a rise in nominal aggregate demand) will not make people better off. It just compounds the problem of rising prices, as the diagram shows.

In the short term, with GDP shrinking, there is a major issue of distribution. If the poor are to be given help so that they are not made even poorer, then other people will have been made worse off. In other words, their nominal incomes must rise more slowly than prices.

Monetary policy

Central banks generally have a mandate of keeping inflation close to 2% over the medium term. Their levers are changes in interest rates, underpinned by changes in the money supply – in extreme times by quantitative easing (creating money by buying assets with newly created money) or quantitative tightening (withdrawing money from the economy by selling assets). Central banks, faced by soaring inflation, have been raising interest rates. The Fed has recently raised the Federal Funds rate by 0.75 percentage points (75 basis points) and the Bank of England and the European Central Bank by 0.5 percentage points (50 basis points).

Raising interest rates reduces inflation by dampening aggregate demand. In the diagram, the AD curve shifts to the left (or shifts to the right less quickly). This will dampen inflation, as falling real demand will force firms to cut prices. But it will also force them to cut output and employment, thereby worsening the recession.

Central banks recognise this dilemma, but also recognise that if inflation is not brought rapidly under control, it could spiral upwards, with wages and prices chasing each other in a wage–price spiral, which only gets worse as inflationary expectations rise. The short-term pain of falling real income is a price worth paying for getting inflation under control.

Fiscal policy

In the short term, there is little that fiscal policy can do to raise real GDP. The focus, as it was during the pandemic, must therefore be in providing relief to those most in need.

In the UK, the energy price cap set by Ofgem will see likely energy bills for the typical household quadruple in just a year, from a little over £1000 per annum at January 2021 prices to over £4200 in predicted January 2023 prices. These higher prices partly reflect rising wholesale energy costs and partly the need for energy companies, in a process known as ‘backwardation’, to recoup hedging costs they have incurred so as not to be forced out of business.

Relief for consumers can be in various forms. For example, the government could pay subsidies to energy suppliers to cap prices at a lower level, perhaps just for the poorest households. Or it could pay grants to help people with their bills. Again, these could be targeted to the poorest families, or paid on a sliding scale according to income. Or VAT on gas and electricity could be scrapped.

Generally the more people are entitled to help, the more expensive it is for the government and hence the less generous the help per family is likely to be.

Then there is the question of whether such measures should be accompanied by a rise in broadly-based tax, such as income tax, or whether the government should borrow more, which would be likely to push up interest rates and increase the cost of servicing government debt.

One topic of debate in the Conservative leadership contest is whether taxes should be cut to help people struggling with the cost of living. Whilst such a policy, if carefully targeted to investment, might increase aggregate supply over the longer term, in the short term it will increase aggregate demand and will add to inflationary pressures.

Targeting tax cuts to the poor is difficult. Cutting income tax rates has the opposite effect. The rich pay more income tax than the poor and will benefit most from a cut in rates. An alternative is to raise personal allowances. This will provide a bigger percentage help to income taxpayers on lower incomes, but provides no help at all for the poorest people who currently pay no income tax.

Conclusion

The supply shocks are making countries poorer. The focus in the short term, therefore, needs to be on income distribution and how to help those suffering the most.

To end on a note of optimism: the energy shocks are causing governments to invest in alternative sources, such as wind, solar and nuclear. When these come on line, it is expected that energy prices will fall.

As far as overall inflation is concerned, although the Bank of England is forecasting CPI inflation of 13.1% by Q4 2022, it is also forecasting that this will have fallen to 5.5% by Q4 2023 and to just 0.8% by Q3 2024. Fingers crossed.

Articles

Reports etc.

Questions

  1. What are the most efficient policies for helping those in energy poverty?
  2. Why is inflation forecast to fall later in 2023?
  3. What determines the shape of the short-run aggregate supply curve?
  4. What government policies would support (a) labour productivity; (b) investment?
  5. How might the market solve the problem of supply shortages?
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Inflationary growth, stagflation or recession? Looking ahead

Inflation across the world has been rising. This has been caused by a rise in aggregate demand as the global economy has ‘bounced back’ from the pandemic, while supply-chain disruptions and tight labour markets constrain the ability of aggregate supply to respond to the rise in demand.

But what of the coming months? Will supply become more able to respond to demand as supply-chain issues ease, allowing further economic growth and an easing of inflationary pressures?

Or will higher inflation and higher taxes dampen real demand and cause growth, or even output, to fall? Are we about to enter an era of ‘stagflation’, where economies experience rising inflation and economic stagnation? And will stagnation be made worse by central banks which raise interest rates to dampen the inflation but, in the process, dampen spending.

Despite the worries of central banks, with inflation being higher than forecast a few months ago, forecasts (e.g. the OECD’s) are still for inflation to peak fairly soon and then to fall back to around 2 to 3 per cent by the beginning of 2023 – close to central bank target rates.

In the UK, annual CPI inflation reached 5.4% in December 2021. The UK Treasury’s January 2022 new monthly forecasts for the UK economy by 15 independent institutions give an average forecast of 4.0% for CPI inflation for 2022. In the USA, annual consumer price inflation reached 7 per cent in December 2021, but is forecast to fall to just over the target rate of 2% by the end of 2022.

If central banks respond to the current high inflation by raising interest rates more than very slightly and by stopping quantitative easing (QE), or even engaging in quantitative tightening (selling assets purchased under previous QE schemes), there is a severe risk of a sharp slowdown in economic activity. Household budgets are already being squeezed by the higher prices, especially energy and food prices. And people will face higher taxes as governments seek to reduce their debts, which soared with the Covid support packages during the pandemic.

The Fed has signalled that it will end its bond buying (QE) programme in March 2022 and may well raise interest rates at the same time. Quantitative tightening may then follow. But although GDP growth is still strong in the USA, Fed policy and stretched household budgets could well see spending slow and growth fall. Stagflation is less likely in the USA than in the UK and many other countries, but there is still the danger of over-reaction by the Fed given the predicted fall in inflation.

But there are reasons to be confident that stagflation can be avoided. Supply-chain bottlenecks are likely to ease and are already showing signs of doing so, with manufacturing production recovering and hold-ups at docks easing. The danger may increasingly become one of demand being excessively dampened rather than supply being constrained. Under these circumstances, inflation could rapidly fall, as is being forecast.

Nevertheless, as Covid restrictions ease, the hospitality and leisure sector is likely to see a resurgence in demand, despite stagnant or falling real disposable incomes, and here there are supply constraints in the form of staffing shortages. This could well lead to higher wages and prices in the sector, but probably not enough to prevent the fall in inflation.

Articles

Data

Questions

  1. Under what circumstances would stagflation be (a) more likely; (b) less likely?
  2. Find out the causes of stagflation in the early/mid-1970s.
  3. Argue the case for and against the Fed raising interest rates and ending its asset buying programme.
  4. Why are labour shortages likely to be higher in the UK than in many other countries?
  5. Research what is likely to happen to fuel prices over the next two years. How is this likely to impact on inflation and economic growth?
  6. Is the rise in prices likely to increase or decrease real wage inequality? Explain.
  7. Distinguish between cost-push and demand-pull inflation. Which of the two is more likely to result in stagflation?
  8. Why are inflationary expectations a major determinant of actual inflation? What influences inflationary expectations?
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Global inflation: looking ahead

Inflation has surged worldwide as countries have come out of their COVID-19 lockdowns. The increases in prices combined with supply-chain problems has raised questions of what will happen to future prices and whether it will feed further inflation cycles.

Inflation targeting

Inflation is a key contributor to instability in an economy. It measures the rate of increases in prices over a given period of time and indicates what will happen to the cost of living for households. Because of its importance, many central banks aim to keep inflation low and steady by setting a target. The Bank of England, the Federal Reserve, and the European Central Bank all aim to keep inflation low at a target rate of 2 per cent.

Inflation-rate targeting has been successfully practised in a growing number of countries over the past few decades. However, measures to combat rising inflation typically contract the economy through reducing real aggregate demand (or at least its rate of growth). This is a concern when the economy is not experiencing a strong economic performance.

Current outlook

Globally, rising inflation is causing concern as a surge in demand has been confronted by supply bottlenecks and rising prices of energy and raw materials. As the world emerges from the COVID-19 lockdowns, global financial markets have been affected in recent months by concerns around inflation. They have also been affected by the prospect of major central banks around the world being forced into the early removal of pandemic support measures, such as quantitative easing, before the economic recovery from the coronavirus is complete.

The Chief Economist at the Bank of England has warned that UK inflation is likely to rise ‘close to or even slightly above 5 per cent’ early next year, as he said the central bank would have a ‘live’ decision on whether to raise interest rates at its November meeting. Although consumer price inflation dipped to 3.1 per cent in September, the Bank of England has forecast it to exceed 4 per cent by the end of the year, 2 percentage points higher than its target. UK banks and building societies have already started to increase mortgage rates in response to rising inflation, signalling an end to the era of ultra-low borrowing costs and piling further pressure on household finances.

In the USA, shortages throughout the supply chains on which corporate America depends are also causing concern. These issues are translating into widespread inflationary pressure, disrupting operations and forcing companies to raise prices for customers. Pressure on every link in the supply chain, from factory closures triggered by COVID-19 outbreaks to trouble finding enough staff to unload trucks, is rippling across sectors, intensifying questions about the threat that inflation poses to robust consumer spending and rebounding corporate earnings. Reflecting concern over weaker levels of global economic growth despite rising inflationary pressures, US figures published at the end of October showed the world’s largest economy added just 194 000 jobs in September, far fewer than expected.

There are also fears raised over high levels of corporate debt, including in China at the embattled property developer Evergrande, where worries over its ability to keep up with debt payments have rippled through global markets. There are major concerns that Evergrande could pose risks to the wider property sector, with potential spill-overs internationally. However, it is argued that the British banking system has been shown in stress tests to be resilient to a severe economic downturn in China and Hong Kong.

Central bank responses

The sharpest consumer-price increases in years have evoked different responses from central banks. Many have raised interest rates, but two that haven’t are the most prominent in the global economy: the Federal Reserve and the European Central Bank. These differences in responses reflect differing opinions as to whether current price increases will feed further inflation cycles or simply peter out. For those large central banks, they are somewhat relying on households keeping faith in their track record of keeping inflation low. There is also an expectation that there are enough underutilised workers to ensure that wage inflation is kept low.

However, other monetary authorities worry that they have not yet earned the record of keeping inflation low and are concerned about the risk of wage inflation. In addition, in poorer countries there is a larger share of spending that goes on essentials such as food and energy. These have seen some of the highest price increases, so policy makers are going to be keen to stamp down on the inflation.

The Federal Reserve is expected to announce that it will start phasing out its $120bn monthly bond-buying programme (quantitative easing) as it confronts more pronounced price pressures and predictions that interest rates will be lifted next year. However, no adjustments are expected to be made to the Fed’s main policy rate, which is tethered near zero. Whilst financial markets are betting on an rise in Bank Rate by the Bank of England as early as next month, spurred by comments from Governor Andrew Bailey in mid-October that the central bank would ‘have to act’ to keep a lid on inflation.

Outlook for the UK

The Bank of England’s Chief Economist, Huw Pill, has warned that high rates of inflation could last longer than expected, due to severe supply shortages and rising household energy bills. He said inflationary pressures were still likely to prove temporary and would fall back over time as the economy adjusted after disruption caused by COVID and Brexit. However, he warned there were growing risks that elevated levels of inflation could persist next year.

The looming rise in borrowing costs for homeowners will add further pressure to family finances already stretched by higher energy bills and surging inflation. According to the Institute for Fiscal Studies, it is expected that households will face years of stagnating living standards, with predictions showing that households would on average be paying £3000 more each year in taxes by 2024/25, with the biggest impact felt by higher earners.

Investors are also reacting to concerns and have pulled $9.4bn out of UK-focused equity funds this year after hopes that a COVID-19 vaccination drive will fuel a vigorous economic recovery were overshadowed by questions about slow growth and high inflation. It is suggested that there is a general sense of caution about the UK when it comes to investing globally, driven by monetary, fiscal and trade uncertainties.

Given all the elements contributing to this outlook, The IMF has forecast that the UK will recover more slowly from the shocks of coronavirus than other G7 nations, with economic output in 2024 still 3 per cent below its pre-pandemic levels. Financial markets are predicting the Bank of England will lift interest rates as soon as the next MPC meeting. And while supply-chain bottlenecks and rising commodity prices are a global trend, the Bank’s hawkish stance has increased the possibility of a sharper slowdown in Britain than other developed markets, some analysts have said.

What next?

Some of the major central banks are poised to take centre stage when announcing their next monetary action, as it will reveal if they share the alarm about surging inflation that has gripped investors. Markets are betting that the Bank of England will begin raising interest rates, with Bank Rate expected to rise to around 1.25 per cent by the end of next year (from the current 0.1 per cent).

It is thought that the Fed will not raise interest rates just yet but will do so in the near future. Markets, businesses, and households globally will be waiting on the monetary decisions of all countries, as these decisions will shape the trajectory of the global economy over the next few years.

Articles

Forecasts and commentary

Questions

  1. What is the definition of inflation?
  2. How is inflation measured?
  3. Using a diagram to aid your answers, discuss the difference between cost-push and demand-pull inflation.
  4. What are the demand-side and cost-side causes of the current rising inflation?
  5. Explain the impact an increase in interest rates has on the economy.