Rising Borrowing Costs Across Major Economies

Long-term borrowing costs across some of the world’s biggest economies have reached new highs, driven by concerns over inflation, government debt levels, and spending on Artificial Intelligence (AI), according to the BBC. The interest rate on US borrowing over 30 years hit 5.33% on Tuesday, the highest since June 2007, while UK long-term debt reached 5.85%. Similar trends were observed in Germany and Japan.

Impact of Rising Oil Prices

Rising oil prices are a primary driver behind the recent surge in bond yields, as investors fear a potential spike in inflation. On Tuesday, a barrel of Brent crude, the global benchmark for oil prices, surpassed $90 following growing tensions over the conflict in the Middle East. The recent surge came after President Donald Trump threatened to bomb Oman, a US ally, if it obstructed talks with Iran to reopen the Strait of Hormuz waterway. The strait has been largely closed for almost six months due to the US-Israel war with Iran, causing oil supply disruption and higher prices.

Uncertainty and Investment Risks

As well as hiking the cost of motor fuel, elevated global oil prices can lead to price rises across the board as companies pass on higher expenses to consumers, pushing up inflation. John Canavan, lead analyst at Oxford Economics, told the BBC that the inflation risk from higher oil prices, along with high levels of government debt and uncertainty around the vast sums being invested into AI, are all playing a role in higher borrowing costs. He said this could lead to higher mortgage rates and borrowing costs for car loans for consumers.

Higher yields, he warned, would mean companies could have to pay more to borrow money and might pass that on to customers. “It adds to the overall inflationary impact,” he said, adding that in the longer-term the risk was higher inflation could slow economic growth. Bond investors typically demand higher returns, or yields, if inflation is high or they expect it to be elevated in the future.

Governments and corporations sell bonds, essentially an IOU, to raise money for spending and in return they pay interest. As well as inflation fears, Canavan said there had been a “push back” across the world from bond investors over the broad financial policies and spending plans of a number of governments. The UK’s financial position and levels of borrowing have led to Prime Minister Andy Burnham to assure the bond markets that he is committed to sticking to the government’s existing borrowing limits, known as its fiscal rules.

Borrowing costs edged up when he took over the Labour leadership from Sir Keir Starmer this summer. Prior to commitments on the fiscal rules, investors had considered that Burnham would be more likely to increase Britain’s already high public borrowing, especially following his comments last year that the UK had to “get beyond this thing of being in hock to the bond markets.” Canavan said long-term borrowing costs in the US were also being driven by a “record pace” of corporate borrowing in recent weeks, mostly for the development and build-out of AI and data centers.

However, with uncertainty over the hundreds of billions of dollars being ploughed into AI as well as the potential risks, investors are demanding higher returns on lending. “The yields are troubling people because it portends a tighter environment and it’s going to be more expensive to borrow money,” said Kim Forrest, chief investment officer at Bokeh Capital Partners. “Especially in this whole AI thing where time to pay it back is uncertain. It makes for a nervous investor environment.”