IMF Warns UK Against Tax Hikes for Defense Spending

The International Monetary Fund (IMF) has advised the UK government that it should reduce the size of the state rather than increase taxes or borrowing to fund defense spending. The warning comes as Britain faces the challenge of meeting its NATO commitment to spend 3.5% of GDP on defense by 2035.

According to IMF forecasts, the UK is already increasing taxes at a faster rate than other Western nations. The fund's fiscal affairs chief, Rodrigo Valdes, called for an urgent discussion on the country's choices, stating that "the space for a lot more revenues is not easy" and that "less spending will be part of the new pressures that you will have from different sources." Valdes also cautioned against further borrowing, noting that "debt spending will be very persistent" and "defense spending will be persistent," implying that debt cannot indefinitely finance these obligations.

IMF Managing Director Kristalina Georgieva echoed these concerns, highlighting that international investors are already sensitive to increases in UK borrowing costs and fiscal policy. She urged the UK to "stay the course" on debt reduction to "reaffirm confidence." Georgieva observed that London, as a global finance hub, attracts particular attention to the UK government's actions and policies.

Britain is currently spending 2.7% of its GDP on defense, an increase from 2.3% since the Labour government took office in 2024. However, this is still significantly lower than spending levels at the end of the Cold War. Labour ministers have pledged to outline a path toward the 3.5% target as part of a spending review next year. The previous Conservative government had proposed funding higher defense spending through welfare cuts, including measures like reimposing the two-child benefit cap and reforming housing benefits. Prime Minister Andy Burnham, however, has maintained that national security should not come at the expense of social security.

Former head of the British Army, Lord Dannatt, welcomed the IMF's intervention, contrasting it with what he described as the government's refusal to acknowledge security threats. The UK's tax burden is projected to reach a peacetime high of 41.9% of GDP by the start of the next parliament, a substantial increase from 38.2% shortly after Labour's return to power, indicating a faster rise than in any other developed economy.