HighIV Macro Policy & Sovereign Debt7 October 2026, Wednesday · 16:41 TRT (UTC+3)
Britain's long-term borrowing costs hit their highest since 1998
Britain's 30-year bond yield rose 13 basis points to 6.036% on 7 October, surpassing the record set on 1 October. Three weeks before Chancellor John Healey's first Budget on 28 October, borrowing costs are at their highest since 1998.
A Reuters report carried by Investing.com said the 30-year gilt yield rose 13 basis points intraday to 6.036% at 16:41 Türkiye time on 7 October. That is the highest level since January 1998 and above the record broken on 1 October. The ten-year yield, a better gauge of new borrowing costs, rose 10 basis points to 5.48%. Trading Economics put the ten-year yield at 5.4465% the same day, the highest since July 2007; the two sources differ by about 3 basis points.
The sell-off is global. The same report said the US 30-year yield rose 7 basis points to its highest since 2002, while Brent stayed above $100 a barrel. According to Trading Economics, markets are pricing in more than 100 basis points of rate rises by the Bank of England by the end of 2027; the policy rate currently stands at 3.75%. Energy-driven inflation risk, gilt supply and fiscal uncertainty are all bearing down at once.
The real constraint lies in the Budget. Reuters said Healey met economists from the primary dealers on 6 October and reaffirmed his commitment to the fiscal rules. Bank of America expects borrowing to rise by £15bn across the current fiscal year and 2027/28. Every rise in yields increases the savings or tax rises Healey will need in the 28 October Budget to stay within the fiscal rules.
Talay assessment
Bottom line
With yields settling above 6%, Healey's 28 October Budget has become a test of credibility with the market. Every basis point before the Budget makes the fiscal rules harder to meet. The most likely path is that yields stay high until the Budget and the government is squeezed between tax rises and spending cuts.
Likely effects
- UK public financesNegative1–6 months
Higher yields at the far end of the curve raise debt-interest costs and enlarge the adjustment needed in the 28 October Budget to meet the fiscal rules.
- Mortgages and corporate creditNegative1–6 months
Fixed-rate mortgage and corporate borrowing costs, which track gilt yields, will rise.
- SterlingNegativeWeeks
Because the rise in yields is driven by fiscal worries, it may weigh on sterling as a risk premium rather than support it.
Possibilities, ranked
- 1High yields until the Budget55%
The 30-year yield holds in a 5.8–6.1% range as the market waits for the numbers on 28 October.
Watch: Bid-to-cover ratios at the DMO's October gilt auctions at the far end of the curve
- 2Fiscal worries deepen25%
Pre-Budget leaks undermine the deficit target and the 30-year yield breaks above 6.2%.
Watch: The OBR fiscal headroom figure in the 28 October Budget
- 3A credible Budget brings relief20%
Healey sets out concrete savings that meet the rules and the 30-year yield falls below 5.7%.
Watch: The 30-year gilt close on the first day after the Budget
Probabilities are calibrated judgement based on the sources, not measurement, and are revised as new information arrives. Not investment advice.
Market reaction
Indicators affected
- 30-year gilt (intraday)▼ 6.036%
- 10-year gilt▼ 5.48%
- Extra borrowing expected (BofA)▼ £15bn