Britain sells 30-year debt at record yield as borrowing costs pressure budget plans

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Britain sells 30-year debt at record yield

Highlights

Britain sells 5.375% 2056 gilt via syndication at a 5.8168% yield, the highest since UK DMO's creation in 1998, surpassing May 1998's 5.79%.
Strong investor demand generates over £85 billion in orders, allowing the bond to price tightly, just 0.75 basis points above the 4.25% 2055 gilt.
Public finances remain constrained, with only £24 billion headroom and debt interest costs forecast at £109 billion this year, or 8.4% of public spending.

Record-priced gilt sale ahead of October budget

As reported by Reuters, the 5.375% 2056 gilt is sold via syndication at a yield of 5.8168%, the highest achieved at any gilt auction or syndication since the UK Debt Management Office, or DMO, is established in 1998. The DMO-announced yield is above the previous record of 5.79% set at a May 1998 auction.

Britain has the second-highest government borrowing costs among larger advanced economies after Australia. Last week, global inflation worries linked to the U.S.-Iran war push 30-year gilt yields to their highest level since early 1998, locking in tougher funding conditions for the government.

Despite the high yield, demand remains robust. Investors place more than 85 billion pounds in orders, and the bond is priced at the tight end of initial guidance, with a yield 0.75 basis points above that of the 4.25% 2055 gilt, according to the transaction's bookrunners.

Lead bookrunners for the sale are Bank of America, Goldman Sachs, J.P. Morgan, Santander and UBS.

Market demand offers support, but fiscal risks remain

Matthew Amis, investment director at Aberdeen Investments, says the syndication shows demand for gilts at these yield levels remains healthy. He adds that a poorly received sale would have put further pressure on gilt yields and, in turn, on government finances.

Before the deal, RBC strategists say some investors might be cautious about long-dated debt after last week's global fixed income selloff, warning against trying to catch a falling knife. They also say UK-specific factors look more supportive, helping narrow the premium on 10-year gilts over German debt.

RBC says softer UK economic data, more dovish Bank of England comments and recent remarks from Prime Minister Andy Burnham and Healey on fiscal responsibility all contribute to a more benign domestic backdrop. Healey, in his first major speech on Monday, seeks to strike a more positive tone on growth while stressing spending control and fiscal discipline ahead of the budget.

Fiscal room nevertheless looks limited. Healey's predecessor Rachel Reeves has a modest 24 billion pounds of headroom to meet medium-term targets for a balanced current budget by 2029/30, but those forecasts are finalized before the U.S. and Israel launch attacks on Iran, a development most economists think worsens the public finance outlook. Even before that, the Office for Budget Responsibility forecasts debt interest costs of 109 billion pounds this year, equal to 8.4% of public spending.

UK tightening fiscal constraints ahead of the autumn Budget have been driven by higher borrowing, rising debt-servicing costs and more cautious bond markets, which together reduce the government’s room to manoeuvre. Our earlier article also highlighted the trade-offs this creates for policy, including the need for greater gilt issuance to support infrastructure ambitions while managing politically sensitive pressures around welfare, pensions and healthcare funding.

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