The UK faces considerable challenges in delivering on its defence spending commitments, according to a new report from the Institute for Fiscal Studies (IFS). The independent think tank's analysis, titled 'UK defence spending: composition, commitments and challenges', underscores the financial implications of the Government's pledge to increase defence expenditure to 2.5% of Gross Domestic Product (GDP) by 2030.
Historically, UK defence spending has seen substantial shifts. From over 5% of GDP during the Cold War in the 1980s, it steadily declined, falling below 2% by 2015. While there has been an uptick in recent years, particularly following Russia's invasion of Ukraine, the IFS report indicates that reaching the 2.5% target will require a significant and sustained increase in investment. This target, announced by the Prime Minister in April, would mean an additional £11 billion per year in defence spending by the end of the decade, based on current GDP projections.
The report highlights that achieving the 2.5% goal would necessitate an average real-terms increase in the defence budget of 3.3% annually over the next six years. This contrasts with the average real-terms increase of 1.1% per year seen since 2010. The IFS also notes that the current defence spending figure, estimated at around 2.3% of GDP, includes elements such as military aid to Ukraine and other non-core defence expenditures, which may not be sustainable or directly contribute to the UK's long-term defence capabilities.
Such an uplift in defence spending would inevitably lead to difficult choices for the Government. The IFS suggests that funding this increase would likely require either cuts to other public services or a rise in taxation. With many public services already facing financial pressures, and the national debt at historically high levels, the allocation of an additional £11 billion to defence presents a significant fiscal hurdle. The report does not specify which areas might be affected, but the implications for departments like health, education, or social care are evident.
The Opposition Labour Party has also committed to increasing defence spending to 2.5% of GDP, although without setting a specific deadline. This cross-party consensus on the target underscores the perceived strategic importance of robust defence capabilities in the current geopolitical climate. However, both parties will need to articulate how this commitment will be financed without further straining the public finances or impacting essential services.
The IFS report serves as a timely reminder of the complex trade-offs inherent in national budgeting and the need for transparent and sustainable funding strategies for defence. It underscores that while the commitment to increased defence spending is clear, the path to achieving it is fraught with financial and political challenges.