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UK bonds have hit a 25-year high – here’s what that means for the economy

UK bonds have hit a 25-year high – here’s what that means for the economy

The Bank of England (headquarters on the left) is expected to hold interest rates, causing investors to sell UK bonds. lazyllama/Shutterstock


By David McMillan, University of Stirling

It’s been more than a year since the UK economy was thrown into crisis after then-prime minister Liz Truss suggested making a wealth of unfunded tax cuts in her September 2022 mini-budget. But a recent bond market sell-off has now sent borrowing costs rocketing again, pushing the bond market even higher than after Truss’s announcement.

Yields on UK treasury bonds – the rate the UK government must pay to borrow money – have risen to approximately 4.6% for ten-year bonds. Yields on 30-year bonds hit 5.1%, the highest since 1998.

Banks also use this rate as a key benchmark to set commercial loan rates, so this means borrowing costs are rising for businesses, as well as for the government. Two-year and five-year treasury yields (which are used to set mortgage rates) are also above the budget-fuelled high of last year, and at levels not seen in over ten years.

UK bond yields (30 year), 1998-2023:

Line chart showing 30-year bond yields hitting highs last seen in 1998.
Trading Economics, CC BY-ND


The government issues treasury bonds at a particular interest rate that corresponds to a fixed value. Investors buy the bonds and the government uses the money to finance its spending. Since it’s a loan, the government repays the investors but also pays interest on the bond until repayment – this is the yield.

For example, a 5% bond issued for a £100 earns the investor £5 interest. If the government issues a later bond at 6% for £100 (£6 interest), the 5% (£5) bond’s value drops. This is why when bond prices fall, the yield rises and vice versa.

Right now, UK treasury yields are rising because investors are trying to sell UK government bonds – falling demand makes the price drop.

And this isn’t just happening in the UK. The same is true around the world. US bonds, for example, recently hit a 16-year high.

Why is this happening right now?

This is a tale of two central banks navigating difficult economic conditions. In September, both the Bank of England and the Federal Reserve chose not to increase their main interest rates (which are at 5.25% and 5.5% respectively). The reasons for these decisions and the position of each economy are driving the bond market changes.

In terms of the economy, headline inflation is currently 6.7% (6.2% for core, which strips out more volatile items like energy) in the UK, and 3.7% (4.3% core) in the US. GDP growth is at 0.6% for the UK and 2.4% for US. So, the two economies are on different tracks.

These figures influence financial market expectations about what central banks might do next with interest rates. The divergence in growth rates and inflation between the two economies had signalled that the banks would take different routes at their September meetings.

Prior to the latest decision by the Bank of England, there was a general view that UK rates would rise to 5.5%, but a lower-than-expected inflation rate was announced days before the bank met to decide on rates and this led them to hold rates instead. After the meeting, the Bank of England also indicated that, while it expected its rate to remain at 5.25% for some time, it did not foresee a further rise.

In contract, while the Federal Reserve also held rates in September, this was seen as a pause and not a stop. US rates are widely expected to rise again this year.

Chart showing that 12 of the 19 FOMC members anticipate one more 25 basis point hike this year, seven expect no change before end of 2023.
Twelve members of the Fed’s 19-person rate-setting committee expect one more 0.25% interest rate hike this year, while 7 FOMC members expect no change before the end of the year. Statista, CC BY-ND


What has this got to do with bond yields?

The expected rise in US rates means investors do not want to hold US bonds whose value will fall as a result. As explained before, when newer bonds are issued at higher yields (to reflect the bank’s most recent interest rate decison), existing bonds (those previously issued with lower yields) will be valued less by investors because they will get less in interest payments for holding them.

This is why investors are selling US bonds. For a related, but slightly different reason, investors also don’t want to hold UK bonds. As US bonds will soon earn a higher yield, investors are selling UK bonds to reposition their portfolios towards the US, where they will be able to earn a higher yield.

This also has implications for the value of the pound. Since the Bank of England’s decision not to raise the interest rate in September, the value of the pound has fallen versus the US dollar. This is because the same investors that are selling UK Treasuries and driving up yields, are also selling pounds to buy US dollars.

The UK is not alone in feeling this effect, the euro is also weakening and against the US dollar, while the Japanese yen is close to the same low that prompted an intervention by the Bank of Japan around this time last year.

Globe surrounded by currency symbols on different types of bank notes.
Global currency markets. Dilok Klaisataporn/Shutterstock


In each case, the reason is the same: the strength of the US economy relative to other economies (0.5% GDP growth for the Eurozone and 1.6% for Japan) is attracting more investors. As with the UK, the policy rates for the Eurozone and Japan are below those of the US, with each central bank indicating an intention not to make further increases.

But both of these effects – higher treasury yields and a depreciating pound – spell bad news for the UK economy.

The higher yields imply higher borrowing costs, including interest payments for the government, as well as both mortgages and business loans. The fall in the value of the pound means that imports are more expensive. Together with the fact that many commodities (such as oil) are priced in US dollars, this can contribute to higher inflation.

Since the economy is also barely growing, both issues will continue to have a dampening effect on the UK.The Conversation

David McMillan, Professor in Finance, University of Stirling

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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