UK long-term borrowing costs hit highest since 2008 ahead of October Budget

On Tuesday, UK long-term government borrowing costs hit a 28-year high, raising concerns ahead of Prime Minister Andy Burnham's first Budget in October. The yield on a 30-year gilt, a loan to the British government, surpassed 5.89%, the highest since 1998. This trend is mirrored in other major economies, such as the US, Japan, and Europe, as investors grapple with inflation, state borrowing levels, and spending on AI by large tech firms.

Burnham emphasized fiscal responsibility as his government addresses the cost-of-living crisis, with higher borrowing costs squeezing the government's fiscal flexibility. Chancellor John Healey will face limitations on spending on measures to ease the cost of living. Despite these challenges, Burnham pledged to bring about more substantial changes to alleviate living costs.

Conservative leader Kemi Badenoch criticized Burnham's diagnosis, claiming it is "completely wrong" and that his theory of growth is flawed. Burnham's ex-economic adviser, Lord Jim O'Neill, suggested that high government borrowing costs would force Labour to tackle excessive welfare spending and the state pension's triple lock.

Gilt yields rose to their highest levels since the global financial crisis, with the 10-year gilt yield reaching 5.22%, also its peak since June 2008. These rising yields signal market pressure on government debt worldwide, with global markets reacting to US central bank rate hike suggestions and Japan's potential rate increase.

Burnham's administration has implemented various consumer and business support measures, with the Budget on 28 October expected to prioritize further cost-of-living relief. However, concerns about funding fresh spending and managing record levels of government debt cast a shadow over the new government's financial outlook.