Takaichi’s Big Gamble: Can Japan Achieve “Strategic Autonomy”?

Japanese prime minister Sane Takaichi, leader of the long-ruling Liberal Democratic Party (LDP), won a landslide victory in a snap election earlier this month. Takaichi’s conservative agenda, focusing on immigration, growth-first policies to boost productivity, and a desire to achieve “strategic autonomy” by amending Japan’s constitutional pacifist obligations, seems to have won the trust of voters. The LDP-led coalition won an enormous two-thirds majority, totalling 352 seats in a 465-seat parliament.

But with great power comes great fiscal responsibility, and Takaichi’s push for a surge in the military budget to a record ¥9.04T (£43.2B) at the end of 2025 has clashed with the country’s macroeconomic realities. Following the election, the yield on government bonds jumped sharply, and currently sit at around 2.11% for a 10 -year bond. While this yield appears modest compared to the UK’s 4.36% yield, it represents a tectonic shift for the Japanese economy. The yield, which functions as the effective interest rate the government pays to borrow money, rises when investors demand higher returns to compensate for inflation or volatility. The higher the yield, the more expensive it is to service debt. For a nation burdened by a debt-to-GDP ratio exceeding 240%, even a marginal spike can have significant knock-on effects. In such an environment, every fraction of a percentage point adds billions to the cost of servicing Japan’s mountainous debt, squeezing available funds for vital public services.

Japan’s journey to become the world’s most indebted nation is a consequence of decades of government fiscal stimulus and policy. Since the collapse of the asset bubble in 1990, successive governments have poured large amounts of money into public works and industrial subsidies. From 2012 until recently, the Bank of Japan (BoJ) has kept interest rates artificially close to zero, sparking inflation rises and a swelling of public debt. This also presented an opportunity for US investors. For years, hedge funds borrowed Japanese loans in yen at near-zero cost, then immediately converted them to USD at favourable rates to buy higher-yielding assets. The trading strategy was extremely effective and also provided the country with an influx of fiscal stimulus, keeping the cost of servicing the sky-high debt at a manageable level, but recent rises in interest rates have resulted in US investors pulling out, and the costs of these loans rising as the yen strengthens. Interest rates have climbed from a mere 0.1% in 2022 to 0.75% at the beginning of 2026, with investors anticipating a rise to 1% by the spring. Essentially, the very mechanism that once served as Japan’s saviour from economic stagnation is now accelerating a domestic fiscal crunch, as rising interest payments begin to consume funds previously reserved for Prime Minister Takaichi’s ambitious defence and social programs.

The problem is further exacerbated by Japan’s demographics. The country has one of the oldest populations in the world, with a median age of 49.1. Social security therefore represents an enormous portion of spending, totalling around ¥39.1 trillion (£186.4B) in the government’s 2026 spending plans, around one-third of the budget. The Japanese Self Defense Force (JSDF) has fallen far short of its recruitment targets in recent years, likely a consequence of a shrinking pool of eligible soldiers. Despite these internal struggles, PM Takaichi has assumed a more aggressive position towards China than her predecessors, going all-in on high-tech AI and the "SHIELD" autonomous drone system to counter China’s regional influence without relying on a depleted workforce.

If any lesson can be learned from Japan, it is one of fiscal resilience. The country is fighting a three-front war: internal demographic decay, mounting debt-servicing costs, and external militaristic threats. The central question for global markets is whether PM Takaichi can spark enough domestic productivity to outrun the rising cost of the nation's massive debt. Following her enormous election victory, she appears to have the peoples’ blessing to enact her policies, and if she succeeds in her bid for strategic autonomy, Japan will prove to the world that it remains a global powerhouse. For now, however, this is proving to be a very big ‘if’.