UK 10-year gilt yield hits 19-year high ahead of budget

The yield on UK government 10-year bonds reached 5.515% by lunchtime in London on 8 October, its highest since July 2007, according to the Guardian. The rise adds pressure on chancellor John Healey before his 28 October budget and could affect borrowing costs for households and businesses.

The yield rose by 0.06 percentage points during the morning, the Guardian reported. That figure is an intraday observation, rather than a closing price. The 19-year comparison applies specifically to the 10-year bond, not to every measure of government borrowing costs.

The Guardian also reported that yields on 20- and 30-year gilts had reached their highest levels since 1998, without giving exact rates for those maturities. Bond yields rise as prices fall, making the increases a sign of investors selling government debt.

Inflation fears drive international bond selling

The latest move extends the international selling described in NewsJaws’ earlier coverage of the global bond sell-off. Thursday’s development is the reported 19-year high in the UK’s 10-year yield, alongside further pressure on longer-term bonds.

The newspaper said the Bank of England was widely expected to raise interest rates at its November meeting, following increases by the European Central Bank, Federal Reserve and Bank of Japan. The anticipated UK decision remains an expectation, rather than an announced rate change.

What higher gilt yields mean for public finances

Gilts are government bonds that lend money to the state for a defined period, with interest payments and repayment at maturity. The Debt Management Office issues them across different maturities, the House of Commons Library explains in its guide to government debt and interest.

The Library says reported borrowing costs are generally inferred from yields on bonds traded in secondary markets. Those yields indicate financing conditions: they are not a single rate immediately charged on all existing government debt.

Roughly three quarters of gilts are conventional bonds paying fixed interest throughout their life, according to the Library. Index-linked gilts instead adjust both interest and principal with inflation. The distinction matters when assessing how market moves feed through to the public finances.

The Library identifies inflation as a source of higher costs on index-linked debt. It also says Bank Rate changes immediately affect servicing costs associated with gilts held by the Bank of England. A single observation of the 10-year yield therefore cannot establish the total fiscal impact.

Pension funds, insurers, banks and overseas investors are important gilt holders, the Library says. It also explains that the Bank of England has reduced its holdings since 2022 through bond sales and by not replacing maturing bonds.

Budget headroom estimates remain uncertain

The Guardian reported economists’ estimates that higher borrowing costs and weaker growth could have removed around half, or potentially more, of the £24 billion buffer against fiscal rules built by Rachel Reeves at her March spring statement. These are estimates, not a new official fiscal forecast.

Healey is expected to raise taxes partly to rebuild that cushion and finance interventions including a six-month VAT cut on electricity bills and energy support for the poorest households, the Guardian reported. Those expectations do not establish the contents of his forthcoming first budget.

Berenberg Bank economist Andrew Wishart argued against using tax increases to restore the earlier surplus in full. Doing so “would do unnecessary damage to economic incentives”, he said, as quoted by the Guardian.

Wishart expected gilt yields to fall over the following year, arguing that the Bank of England would deliver fewer rate rises than the four investors then anticipated. His forecast illustrates uncertainty over the path of borrowing costs; it does not establish that Thursday’s increases will reverse.

Household and business borrowing effects are unquantified

Higher government bond yields can have knock-on effects for homeowners and businesses, the Guardian noted. Its report did not quantify changes to mortgage offers, business lending rates or household payments, so the gilt-market figures do not establish a specific increase in any borrower’s bill.