The UK government borrowed £23.3 billion in May 2026, overshooting Office for Budget Responsibility forecasts by £5.6 billion. This represents a 30.4% increase from the previous year and signals significant fiscal strain early in the financial year.
Central government debt interest payments emerged as the primary driver, reaching £11.7 billion for the month. This figure marks a 54% year-on-year increase, largely fueled by inflation-linked gilts and elevated energy costs tied to the ongoing Middle East conflict.
Public spending climbed to £118 billion, up £9.1 billion from last year. While tax receipts rose to £94.8 billion, revenue growth failed to offset the surge in expenditure. Combined borrowing for April and May now stands at £46.3 billion, exceeding projections by £7.7 billion.
Public sector net debt has reached 95.1% of GDP, a level unseen since the post-World War II era. For investors, increased bond supply threatens to push gilt yields higher, tightening financial conditions and raising mortgage rates across the economy.
The Bank of England faces a critical dilemma. Persistent inflation supports keeping interest rates elevated, yet higher rates further escalate government debt servicing costs. With nearly half the projected annual borrowing consumed in just two months, pressure mounts for immediate fiscal consolidation.