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There's a vital way to reduce it that everyone overlooks – raise productivity

  • Written by David McMillan, Professor in Finance, University of Stirling
Chart of long-term productivity growth

Inflation has become one of the great issues of our times. The UK’s is the highest in the G7, weighing in at 9% a year[1] according to the most recent figures on consumer price inflation.

When you look at the other common measure for prices, retail price inflation[2], which adds mortgage rates into the equation and is also calculated a little differently, it is even higher at 11%. This is important because RPI is used for raising prices across a range of items, from train tickets and mobile phone contracts to student loans.

The question of why inflation is so high is well rehearsed. The initial impetus came from greater demand, but it is being further fuelled by supply issues.

What caused high inflation

On the demand side, quantitative easing (QE) during the pandemic – in which central banks “created money” to help prop up the economy – has increased the amount of money in the system by over 20%[3].

When lockdown ended, this helped to ensure that there was pent-up demand for goods and services: retail sales[4] rose by over 20% year on year in May 2021, for instance, and hit another peak of nearly 10% in January 2022. At the same time, demand from firms helped to drive huge price increases in key industrial commodities such as copper[5] and steel[6]. Also, oil prices[7] rose by approximately 67% in 2021 and another 20% in 2022 to date.

Heightened demand has collided with constraints on the global supply chain from social distancing, self-isolation rules and renewed lockdowns in China[8] (even the Ever Given getting stuck[9]). As a result, the cost of shipping goods[10] is around 35% higher than the pre-pandemic high (and over 700% higher than its low). And all of this is before discussing the war in Ukraine[11].

The response by the Bank of England has been to increase the headline rate of interest[12] from 0.1% to 1%, and to stop QE. Tightening monetary policy affects demand as the interest due on many debt repayments is rising and the cost of borrowing is going up. As a result, the GfK UK consumer confidence index[13] is sitting at -40, a historically low level (when the number is positive, it means consumer confidence is high).

This combination of higher interest rates and higher prices has increased the likelihood of a recession. In part, this is because increasing interest rates discourages businesses from investing. But there’s also another problem with discouraging investment: it’s part of the long-term solution to our inflation problem.

Productivity and investment

This is linked to the UK’s long-term problem with productivity: in other words, how much each worker produces. The UK productivity rate is growing, which you would expect as technology brings improvements, but the growth is less than that of key international competitors like the US, Germany and France.

While the rate of growth has returned to pre-pandemic levels after plunging during the lockdowns, it is still slower than in the years before the global financial crisis of 2007-09. A PwC report from 2019[14] highlights that annual growth in UK productivity was 2% for the ten years to 2008 and 0.6% for the ten years after, with a productivity gap[15] of approximately 10% to Germany and over 30% to the US.

G7 productivity growth, 1997-2021

Chart of long-term productivity growth
ONS[16] Why does productivity matter for inflation? When a workforce is more productive it produces more goods and services, and at a lower cost per unit. This means there is a greater supply of these things, which puts downward pressure on prices and is therefore associated with lower inflation. How do we raise productivity? One important way is to invest more, but this has been a weakness in the UK. Business investment[17] plateaued in 2016 following the Brexit referendum, fell with COVID-19 and remains almost 10% below the 2019 level. The nation’s investment spending as a proportion of GDP (16.7%) compares poorly[18] with the US (22.5%), Japan (25%) and the EU (24.3%). This is despite evidence that UK companies are holding £140 billion[19] in cash and have a backlog of accumulated projects. What can be done The question is how to encourage firms to release this investment potential. The government is planning to increase headline corporation tax from 19% to 25%[20] in 2023, which is not going to help and should arguably be scrapped. To further incentivise investment, there’s also a need for more generous rules around tax relief, including extending the “super-deduction[21]” that was brought in two years ago, which can reduce companies’ tax bills by 25%. Young woman in hard hat and hi-vis working in a factory Better apprenticeships are vital for productivity. Quality Stock/Alamy[22] As well as encouraging companies to invest and expand, the government needs to incentivise people to start new companies. For example, the UK has lost three-quarters of a million[23] self-employed workers since February 2020. To encourage more start-ups, the UK government, the devolved administrations and councils need to come together to develop strategic plans for different regions. This includes making better use of universities as local hubs for expertise and developing clusters of similar firms based on local specialisms that can help one another by sharing equipment and collaborating. Plans exist[24], but need to be actioned; levelling up must be more than a catchy slogan. Public investment has to be part of the picture. This especially includes education, both at school, where upgraded facilities are required to ensure that young people are fully trained in the latest technology; and for over-18s, with a clearer balance between university and apprenticeship training. Getting east to west is about to become substantially easier in London thanks to Crossrail, but remains tortuous elsewhere, whether from Leeds to Manchester or Edinburgh to Glasgow. Quicker transport links improve the mobility of goods and labour, while truly upgrading internet connections (full fibre and 5G) improves links when travel isn’t necessary. Both improve productivity. Inevitably, these kinds of interventions involve further spending. But this has to be viewed as a long-term solution. After WWII, government debt was well over 200% of GDP[25] and took 50 years[26] to be paid off. The same time scale can be considered now. UK Chancellor Rishi Sunak has been talking a lot about the need to unlock investment and raise productivity, but there is still very little detail about what the government intends to do. There are lots of economic benefits to raising productivity, but bringing down inflation is the one that everyone seems to have missed. References^ 9% a year (^ retail price inflation (^ by over 20% (^ retail sales (^ copper (^ steel (^ oil prices (^ renewed lockdowns in China (^ Ever Given getting stuck (^ shipping goods (^ war in Ukraine (^ headline rate of interest (^ GfK UK consumer confidence index (^ PwC report from 2019 (^ productivity gap (^ ONS (^ Business investment (^ compares poorly (^ holding £140 billion (^ from 19% to 25% (^ super-deduction (^ Quality Stock/Alamy (^ three-quarters of a million (^ Plans exist (^ over 200% of GDP (^ 50 years (

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