Tax Rises ‘Virtually Inevitable’ After £8bn Borrowing Blow, Warn Treasury Officials

The Office for Budget Responsibility’s latest monthly borrowing figures, released this morning, show that the UK government borrowed £8.1 billion more than forecast in the first five months of the fiscal year. The cumulative deficit now stands at £56.3 billion, compared with the OBR’s March projection of £48.2 billion. In a note accompanying the data, the watchdog attributed the overshoot to higher-than-expected spending on energy support schemes and rising debt interest costs, which have been exacerbated by stubbornly high inflation.

According to a Treasury official who spoke to the Financial Times on condition of anonymity, the Chancellor’s remaining “fiscal headroom” – the buffer against the Government’s own borrowing rule – has effectively been eliminated. “Without a dramatic improvement in the economic outlook, tax rises are virtually inevitable in the next fiscal event,” the official said. The statement marks a stark reversal from the Prime Minister’s repeated assurances that his administration would “cut taxes, not raise them”.

The borrowing blow comes at a particularly sensitive time. The Chancellor is due to deliver a fiscal statement – potentially an Autumn Statement – in late November, and the Treasury is already under pressure from international bond markets to demonstrate a credible path to debt reduction. Yields on 10-year gilts edged higher this morning, reflecting investor nervousness. The Institute for Fiscal Studies has warned that the Government may need to find up to £15 billion in additional savings or tax revenues to meet its medium-term fiscal targets.

Why this matters for British taxpayers: The most likely candidates for tax increases, according to economists at the Centre for Economics and Business Research, are a further freeze on income tax thresholds (which drags more people into higher brackets), an increase in corporation tax beyond the already planned rise to 25%, and a widening of the windfall tax on energy companies. Each of these measures would directly hit households and businesses, undermining the Government’s stated goal of boosting economic growth through lower taxes.

Analysis FORTIS: This is yet another chapter in the long-running tragedy of the British state’s inability to control its own spending. The £8 billion overshoot is not a random shock; it is the predictable result of a political class that treats public money as an infinite resource. The energy support schemes, while politically popular, were poorly targeted and lacked any sunset clause. Debt interest costs are soaring because the Government borrowed massively during the pandemic and then failed to restore fiscal discipline. The truth is that the UK’s tax burden is already at a 70-year high, and the state delivers poor value for money in health, education, and infrastructure. The answer is not more taxes – it is radical spending restraint, privatisation of non-core functions, and a credible commitment to shrinking the state. But neither major party has the courage to propose such reforms.

Counterpoint: Supporters of the Government argue that the borrowing overshoot is largely driven by global factors – high energy prices and sticky inflation – and that the Chancellor’s fiscal rules remain intact if the economy improves. Labour, meanwhile, blames “13 years of Conservative mismanagement” and calls for even higher taxes on the wealthy and corporations. Neither narrative addresses the fundamental problem: the British state has grown beyond what the economy can sustainably finance. The OBR’s own long-term projections show that, without reform, debt will continue to climb inexorably.