Why are UK borrowing costs rising and what does it mean for me?

UK government borrowing costs have been on the rise, currently reaching their highest level since 1998 as global investors express concern over inflation. To understand why this is happening and how it impacts you, it's essential to grasp the concept of bonds, which are essentially IOUs traded in financial markets. Governments often spend more than they receive in tax, so they borrow money to cover the shortfall, typically by selling bonds to investors.

In return, governments repay the bond's face value and pay regular interest, providing a steady stream of future payments.

UK government bonds, known as gilts, are considered very safe, with minimal risk of repayment. These bonds are primarily purchased by financial institutions like pension funds. However, interest rates, or the yield on these bonds, have been climbing. The yield on a 10-year bond is at its highest since 2008, while the yield on a 30-year bond is at its peak since 1998. This increase means it costs the government more to borrow money over the long term.

This rise in borrowing costs comes at a crucial time for the newly elected Prime Minister Andy Burnham and Chancellor John Healey, who are set to deliver their first budget on October 28th. The government's financial flexibility is constrained by fiscal rules it has established for itself. If the government needs additional funds to manage higher borrowing costs, it will have less to allocate to other areas (under its self-imposed rules).

Consequently, this may lead to reduced support for households grappling with the cost of living crisis, or increased taxes to finance any assistance provided.

The situation is not set in stone; the chancellor could potentially alleviate some financial burdens by cutting spending elsewhere. It's worth noting that higher gilt yields could affect the mortgage market, especially following Liz Truss's mini-budget in September 2022. Analysts suggest that mortgage rates might increase for new fixed deals as lenders face higher funding costs.

However, this scenario is markedly different from the rapid surge in rates observed in September 2022, which prompted lenders to swiftly adjust their offerings.

The phenomenon of rising gilt yields is not limited to the UK; borrowing costs are also increasing in the US, Japan, and Europe. Global investors are worried about the potential persistence of high oil prices and general inflation, stemming from events in the Middle East. The potential for prolonged high inflation diminishes the purchasing power of fixed payments, prompting investors to demand a higher yield as compensation, which leads to the selling off of bonds.

Furthermore, there is growing concern about the substantial levels of government borrowing, while there has been increased demand for loans from large tech companies aiming to invest in AI, fueling competition and driving up interest rates charged by lenders.