The UK Treasury paid 5.82% interest to sell £4bn of 30-year government bonds on Tuesday, the highest yield on long-dated UK debt since 1998. The sale reflects a broader global sell-off in government bonds and raises fresh concerns about the fiscal room available to chancellor John Healey ahead of the budget.
Why are UK borrowing costs rising?
The jump in yields is largely tied to a worldwide sell-off in long-term government bonds, as investors demand higher returns amid concerns over inflation, elevated public debt levels and shifting expectations for interest rates across major economies. The UK is not alone in facing this pressure, but its 30-year borrowing costs have climbed to levels not recorded in nearly three decades, making the government’s debt servicing markedly more expensive.
Rising yields on long-term debt are squeezing the fiscal space chancellors rely on to fund spending commitments, analysts said.
What does this mean for John Healey’s budget?
The higher borrowing costs threaten to erode a significant portion of the £24bn in fiscal headroom that Healey had been counting on for his upcoming budget. Analysts warn that if elevated yields persist, at least half of that buffer could be wiped out, forcing difficult choices on spending, taxation or borrowing plans to keep the government’s fiscal rules intact.
What comes next for UK debt markets?
Markets will be watching closely to see whether the sell-off in long-dated bonds stabilizes or continues to intensify, as further increases in yields would tighten the fiscal constraints facing the Treasury even more. Investors and economists are also monitoring how the government responds in its budget planning, given the reduced room to maneuver on spending and tax decisions.
