Global bond rout deepens as oil prices jump; wheat prices highest since early 2023 – as it happened

Longer-dated gilt yields have also surged, which means higher borrowing costs for Andy Burnham ’s government.

The yield, or interest rate, on the 30-year gilt jumped 9 basis points to 5.88%, the highest since March 1998.

This comes as oil prices keep climbing, with Brent crude rising 1.7% to $92.1 a barrel. US West Texas Intermediate is 1.9% higher at $87.35 a barrel.

Thomas Pugh , chief economist at the audit, tax and consulting firm RSM UK, said:

double quotation mark Gilt yields are up and it’s tempting to blame this on UK-specific factors. But government bond yields are surging across the world, especially in America. That doesn’t mean the UK is off the hook. We still have to pay a higher interest rate than similar countries, suggesting investors see us as a riskier place for their cash. That reflects a combination of political risk, low growth and sticky inflation.

The energy shock and the threat of rising inflation are important factors. Inflation expectations matter because inflation erodes the purchasing power of a bond’s fixed payments. When investors believe inflation could remain elevated, they demand a higher yield as compensation.

But there is much more to it than that, especially for longer-dated bonds. Governments are still spending as if interest rates were near zero and their economies were in crisis. The budget deficit in the UK is likely to be close to 4% of GDP this year and close to 6% in the US. At the same time, this borrowing is becoming increasingly hard to finance.

The UK will spend about 3.7% of national income just to pay the interest on its debt. In other words, we are borrowing more to help cover our interest bill increasing the risk of public debt rising further and prompting global investors to demand a higher risk premium.

There is also something of a credibility issue, he said.

double quotation mark Inflation has been above target in the UK and US for much of the past five years, raising questions about whether it will return sustainably to 2%. Meanwhile, various governments have not followed through on promises to bring deficits down. Lenders therefore have to factor the prospect of higher inflation and greater bond issuance into the price they are willing to pay.

The elephant in the room is the rise of economic populism. There is a logic to populism, whether it comes from the right or the left. Both versions tend to favour expansionary fiscal policy – tax cuts, higher spending or both – tolerate higher inflation and resist efforts by central banks to restore price stability. If such policies continue for long enough without a course correction, the risks of financial and currency instability increase. Global investors understand where such policies can lead.

double quotation mark Alongside the huge supply of government bonds, the private sector is also starting to borrow more. AI firms are expected to borrow about $500bn this year to build data centres – for comparison, the UK government will borrow about $160bn. That is increasing competition for capital and pushing yields higher. None of these factors look temporary, and so bond yields are rising to compensate.