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The Guardian World1 min read
UK long-term borrowing costs reach 28-year high
TL;DR
UK long-term borrowing costs have hit a 28-year high due to the ongoing Iran war and rising political uncertainty ahead of elections. Yields on 30-year and 10-year government bonds have surged as global markets react.
Key points
- UK long-term borrowing costs at 28-year high
- 30-year bond yields reached highest level since 1998
- 10-year bond yields at 18-year high
- Iran war affects global energy supplies
- Political uncertainty ahead of UK elections
Long-term UK borrowing costs have reached their highest level since 1998 as the Iran war continues and concerns rise over political uncertainty in the lead-up to local and national elections.
Government bond markets for major economies have all fallen since the US-Israeli conflict with Iran began, meaning the effective cost of borrowing for governments has shot up.
There have been extra jitters in UK government debt markets ahead of Thursday's elections.
On Tuesday afternoon the yield on 30-year government bonds reached a 28-year high, while the yield on 10-year bonds reached an 18-year high.
The Iran war has led to the effective closure of the Strait of Hormuz. That closure has impacted the world's supplies of oil and liquid natural gas, and caused energy prices to skyrocket.
Markets have reacted to these events by factoring in higher inflation and borrowing costs, and those factors have led to a global rollercoaster on bond markets.
Over the weekend, bond markets went further in the wrong direction, reflecting assumptions of a prolonged blockage of the Strait of Hormuz.
However, the impact on UK markets has exceeded that in other G7 nations, which traders put down to a more inflation-prone economy, and, in the past few days the prospects of more political instability around the raft of elections.
The Labour Party is expected to lose hundreds of council seats, and face challenging national elections in Scotland and Wales.
Over the weekend there was also widespread speculation about possible leadership challenges.
The government points to an improvement in growth, inflation and borrowing figures earlier this year, before the onset of the war in Iran.
The 30-year UK bond yield peaked at around 5.78%, while the 10-year yield peaked at around 5.1%.
Rising yields on government bonds mean the government will face higher debt interest costs.
It also strains Chancellor Rachel Reeves' spending power as she works to keep to her budget rules. The two main ones are to not borrow to fund day-to-day spending by the end of this parliament, and to get government debt falling as a share of national income over the same period.
UK government borrowing fell to a three-year low for the year to March, dropping to £132bn, but analysts expect borrowing to worsen through the year if inflation picks up.
The 30-year gilt is a fairly niche product, effectively a 30-year loan to the government, which historically was mainly bought by defined benefit pensions funds. There are currently no active auctions at this term scheduled by the Debt Management Office (DMO).
At last year's Budget, the DMO changed its remit for sales of government debt to be less reliant on this type of borrowing.
Q&A
What caused the UK long-term borrowing costs to rise?
The rise in UK long-term borrowing costs is primarily due to the ongoing Iran war and political uncertainty related to upcoming elections.
How high have UK government bond yields reached?
The yield on 30-year government bonds has reached a 28-year high, while the yield on 10-year bonds has reached an 18-year high.
What impact has the Iran war had on global energy prices?
The Iran war has led to the effective closure of the Strait of Hormuz, significantly impacting global oil and liquid natural gas supplies and causing energy prices to skyrocket.
How are global markets reacting to the US-Israeli conflict with Iran?
Global government bond markets have fallen since the onset of the US-Israeli conflict with Iran, leading to increased borrowing costs for governments.
