The chancellor is under pressure because financial market moves have pushed up the cost of government borrowing, putting Rachel Reeves’ economic plans in peril.
So what’s going on, and should we be worried?
What is a bond?
UK Treasury bonds, known as gilts because they used to literally have gold edges, are the mechanism by which the state borrows money from investors.
They pay a fixed annual return, known as a coupon, to the lender over a fixed period – five, 10 and 30 years are common durations – and are traded on international markets, which means their value changes even as the return remains fixed.
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That means their true interest rate is measured by the ‘yield’, which is calculated by dividing the annual return by the current price. So when bond prices fall, the yield – the effective interest rate – goes up.
And for the last three months, markets have been selling off UK bonds, pushing borrowing costs higher. This week the yield on 30-year gilts reached its highest level since 1998 at 5.37%, and 10-year gilts briefly hit a level last seen after the financial crisis, sparking jitters in markets and in Westminster.
Why are investors selling UK bonds?
Bond markets are influenced by many factors but the primary domestic pressure is the prospect of persistent inflation, with interest rates staying high for longer as a consequence.
Higher inflation reduces the purchasing power of the coupon, and higher interest rates make the bond less competitive because investors can now buy bonds paying a higher rate. Both of which apply in the UK.
Inflation remains higher than the Bank of England‘s 2% target and many large companies are warning of further price rises as tax and wage rises bite in the spring.
As a result, the Bank is now expected to cut rates only twice this year, as opposed to the four reductions priced in by markets as recently as November.
Nor is there much optimism that the…

