UK borrowing costs surge after tax U-turn stuns markets

UK government borrowing costs have climbed sharply after Chancellor Rachel Reeves backed away from planned income tax rate increases, choosing instead to freeze tax thresholds for two years.

This last-minute reversal triggered a sell-off in the government bond market, as investors interpreted the move as a signal that the government’s fiscal strategy may be weaker than expected. 

Instead of raising the headline income tax rate — which would have broken a manifesto pledge — the government will raise an estimated £7.5 billion by freezing the point at which workers start paying income tax. The freeze, combined with inflation and wage growth, is expected to draw more tax from millions of workers. Still, the figure falls short of the size of the fiscal gap — previously estimated near £20–30 billion — and has stoked concerns in the market about whether smaller tax adjustments can plug the hole. 

The market reaction was swift: yields on UK government bonds jumped and the pound slid, reflecting investor anxiety about fiscal uncertainty ahead of the forthcoming budget. Analysts warn that relying on broader-based small tax rises may not satisfy markets demanding clarity on budget discipline. 

In a bid to shore up confidence, Reeves and the Prime Minister Keir Starmer emphasised the need for resilient public finances capable of weathering global economic turbulence. But with under two weeks to the budget, the government now faces fresh pressure to articulate a credible plan that reassures markets and voters alike. 

Key Takeaways:

Markets spooked as plan to raise income tax rates is scrapped in favour of freezing tax thresholds.

Government aims to raise £7.5 billion via threshold freeze, but fiscal gap remains much larger.

Rising bond yields and a falling pound signal investor doubts on the UK’s fiscal roadmap.

Adapted From 

https://www.theguardian.com/business/2025/nov/14/uk-borrowing-costs-up-after-markets-spooked-by-reeves-income-tax-u-turn