UK Government Borrows £23.3 Billion in May as Public Finances Prove Fragile

The UK government borrowed £23.3 billion in May, a notable increase of almost one-third compared to the same period last year. This figure, representing the gap between government spending and tax revenue, surpassed the Office for Budget Responsibility's (OBR) forecast by £5.6 billion.

Ruth Gregory, Deputy Chief UK Economist at Capital Economics, stated that the 'big picture is that the public finances are fragile,' indicating significant constraints for the next Prime Minister. This financial strain coincides with Greater Manchester mayor Andy Burnham's election as MP for Makerfield, positioning him for a potential Labour leadership challenge.

According to ONS statistician Tom Davies, 'Spending on debt interest, public services, investment and benefits all increased in May 2026, compared with last May.' These outlays outweighed higher tax receipts. The OBR's March forecast did not fully account for the economic ramifications of the conflict in the Middle East.

Interest payable on government debt reached £11.7 billion in May, the highest recorded for that month. Danni Hewson, Head of Financial Analysis at AJ Bell, attributed much of this surge to heightened inflation, which saw an uptick following the Iran conflict and is anticipated to rise further due to increased oil prices. Hewson noted that 'long-term borrowing costs have been creeping up and will be monitored closely if the anticipated Labour leadership contest gets under way.'

Susannah Streeter, Chief Investment Strategist at Wealth Club, suggested investors have largely accounted for the prospect of a Labour leadership contest. She observed that Andy Burnham's pledge to adhere to fiscal rules and his commitment to reducing welfare costs to fund increased defence spending signals a move towards the political centre, which may offer some reassurance.

The Bank of England held interest rates this week, attempting to balance a subdued jobs market with expectations of continued inflation. Chief Secretary to the Treasury Lucy Rigby acknowledged that 'The war in the Middle East has clearly had an impact on economies around the world.' Shadow Chancellor Mel Stride criticised the government, asserting that 'Borrowing is out of control.'

Separately, retail spending saw a 1.2% rise in May, attributed to unusually favourable weather conditions driving sales of outdoor furnishings and fans.