New data released on July 21st shows the UK's public sector borrowed more than anticipated in the first quarter of the 2026/27 fiscal year, presenting an immediate challenge to the incoming government.
The UK's Office for National Statistics reported that public sector net borrowing for the April-to-June period reached £57.6 billion (approximately $77.5 billion). This figure is £2.7 billion higher than the forecast made by the Office for Budget Responsibility in March. Although the single-month deficit for June fell by one-third year-on-year to £16 billion, beating economist expectations of £17.8 billion, the cumulative quarterly deficit exceeding official forecasts serves as a warning to the new Chancellor of the Exchequer.
This development comes as the UK political landscape undergoes a significant shift. On Monday, the country welcomed its seventh Prime Minister in a decade. Andy Burnham formally entered 10 Downing Street on July 20th, succeeding Keir Starmer. In a surprising move, Burnham immediately appointed former Defence Secretary John Healey as the new Chancellor.
However, market sentiment was quickly tested. On his first day, Burnham's comments about utilizing "all the flexibility" within fiscal rules touched a raw nerve. The yield on the benchmark 10-year UK government bond surged by 9 basis points to 5.04%, while the 30-year yield climbed to a two-month high of 5.75%. The following day, the 10-year yield eased slightly by 1 basis point to 5.02% as markets calmed.
Market Reaction to Fiscal "Flexibility"
The trigger for market unease was a statement Burnham made to reporters on the afternoon of July 20th. When questioned about the possibility of increased borrowing to fund larger infrastructure investments, he stated his government would adhere to the existing fiscal rules while "obviously" using any flexibility within them. He attempted to reassure markets by emphasizing a "very prudent approach" and promising to clearly outline funding sources in an upcoming budget.
These assurances did not prevent an immediate reaction in bond markets. Sterling also fell 0.27% against the dollar to $1.3416. Analysts noted the market's heightened sensitivity to any talk of fiscal rules, a legacy of the bond market crash triggered by Liz Truss's unfunded tax cuts in 2022. Investors remain vigilant against signals of relaxed fiscal discipline.
Further fueling concerns were Burnham's hints at potentially raising the top income tax rate to 50% while increasing the tax-free personal allowance, adding to worries about fiscal loosening.
A Challenging Brief for the New Chancellor
John Healey's appointment itself is notable. Just six weeks prior, he resigned as Defence Secretary in protest over the previous government's refusal to commit to raising defence spending to 3% of GDP by 2035. Now, he transitions from advocating for military funds to being responsible for approving them, making defence spending a key variable in his fiscal policy.
Upon taking office, Healey stated that fiscal control and credibility are a chancellor's primary duty and the foundation of economic stability and national security. He pledged to work "in lockstep" with the Prime Minister to adhere to fiscal rules while maintaining buffers for uncertainty.
The challenges are multi-faceted. Beyond defence spending pressures, Healey faces demands for welfare reform, energy bill tax cuts, and expanded public utility oversight. Economists warn that political pressure will seek to fund new promises with any improvement in borrowing data, while fiscal prudence demands such improvements be retained as a buffer against higher debt interest costs and future economic shocks.
Factors Preventing a Market Crisis
Despite bond market tension, the UK has not repeated the severe gilt market crash of 2022. Analysts point to at least two favourable conditions for Burnham's government.
First is the fiscal legacy left by the previous chancellor, which included strict adherence to rules and a significant £58 billion reduction in planned gilt sales this year to around £246 billion. Analysts at ING Groep NV note this scale should cover most of the tax and spending adjustments hinted at so far. The UK is a rare example of an economy undergoing genuine fiscal tightening, a result of frozen tax thresholds.
Second is an optimistic signal from the International Monetary Fund. In its July World Economic Outlook, the IMF upgraded its UK growth forecast for 2026 to 1.0% from 0.8%, making it the third-fastest growing G7 economy after the US and Canada. This modest upgrade suggests the economic situation Burnham inherited may be less dire than previously feared.
Additionally, think tanks have suggested the government could increase borrowing through public financial institutions like the National Wealth Fund, whose additional borrowing would not count against the government's self-imposed debt rules, offering potential fiscal maneuvering room.
June Relief Masks Structural Pressures
A significant drop in debt interest payments acted as a relief valve in June, driving the lower monthly deficit. Central government debt interest fell 31% year-on-year to £11.8 billion, primarily due to slowing inflation reducing costs for index-linked gilts, though this remained the fourth-highest June interest payment on record.
Tax revenues also showed strength, with robust growth in income tax and VAT receipts in June, though this was partly offset by a sharp rise in welfare spending. Economists caution that while June's data provides a welcome boost for the new government, it should not be mistaken for a turning point, merely offering some breathing room after a difficult start to the fiscal year.
Cumulative data reveals a tougher reality. While revenues were £2.4 billion higher than the OBR forecast for the first three months, spending overshot by £3.6 billion. The current budget deficit—a key target under fiscal rules aiming for balance by 2029-30—stood at £42 billion for April to June. This is nearly 11% lower than a year ago but still £1.3 billion above the OBR's prediction. Total borrowing for the fiscal year to date is £57.6 billion, 6% lower than the same period last year but £2.7 billion above forecast. Public sector net debt remains around 100% of GDP, just shy of the £3 trillion mark.
Bank of England May Pause Rate Hikes
With inflationary pressures easing, including a scheduled reduction in the energy price cap in September, the likelihood of the Bank of England holding interest rates steady at its July 30th meeting has increased. Recent data showed UK inflation held steady at 2.8% in May, below expectations, indicating price pressures were softer than feared even before a recent drop in energy prices. Data also showed private-sector wage growth slowing to its weakest pace since 2020.
Markets now widely expect the central bank to keep rates unchanged next week, with traders pricing in only a 14% chance of a 25-basis-point hike. However, due to renewed geopolitical tensions, investors still anticipate one final rate hike by the end of the year.
Political Risks Loom
Beyond fiscal variables, political risks persist. As Burnham takes office, the right-wing Reform UK party, while still leading in polls, has seen its advantage narrow. Recent polling shows Reform's support has dipped to 23%, just one point ahead of the Labour Party, with other polls showing the two parties level. Reform leader Nigel Farage is facing a parliamentary investigation over an undeclared donation, which has impacted his party's ratings.
Nevertheless, Reform UK remains a significant variable. For many investors, a Reform government represents an unpredictable factor, with inevitable comparisons to the disastrous 2022 Truss budget. The IMF has warned that the gilt market turmoil of September 2022 "appears to mark a fundamental shift" in how shocks transmit to bond yields, indicating heightened market fragility.
Burnham also faces a tight timeline. The next general election must be held within three years, giving his government limited time for large-scale reforms to bear economic fruit. Significant cuts to welfare spending could also trigger rebellion within his own party.
Conclusion
Burnham's first day was a carefully choreographed balancing act, aiming to placate his party's left wing with talk of fiscal flexibility while reassuring bond markets with promises of prudence. The appointment of John Healey—a former defence secretary who resigned demanding more military funding—as chancellor is the most dramatic element of this balancing act.
The UK's borrowing costs are already the highest in the G7, with 10-year gilt yields hovering around 5%, a level not seen before spring 2026 since 2008. Public debt stands at 94.9% of GDP, a 60-year high. However, two "lucky breaks"—the fiscal space left by the previous government and the IMF's upgraded growth forecast—provide a temporary respite.
The true test will come with the Autumn Budget: how to deliver on public service promises, fill the defence spending gap, and advance infrastructure investment without triggering a bond market crash, all while facing the political pressure of an election that must be called within three years. As one analyst noted, "a boring budget doesn't win elections." But for Burnham, a budget that is "not boring" could just as easily lose market confidence. This dilemma will define his entire premiership.
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