Japanese Prime Minister Sanae Takaichi has unveiled a sweeping economic blueprint that calls for more than 370 trillion yen (USD 2.3 trillion) in combined public and private investment by March 2041, targeting sectors like artificial intelligence (AI), semiconductors, defence, space and shipbuilding.
The plan, detailed in documents released after a policy advisory panel meeting, earmarks 101.6 trillion yen for AI and chip-related spending alone. Unveiling the strategy, Takaichi said she intended to build a “strong and prosperous investment framework”, with the government expected to fund a little under half the total if inflation tracks current forecasts.
In introducing the plan, Takaichi said she aims to create a “strong and prosperous investment framework”, while mentioning that the blueprint calls for a combination of public and private investment to reach the target amounts. The government may contribute a little less than half if inflation stays in line with expectations.
“The investment roadmap marks a key step in Takaichi’s effort to put her stamp on Japan’s growth strategy as technological change and geopolitical tensions reshape economic priorities. The prime minister is seeking to channel investment into sectors that can strengthen economic security — from supply-chain resilience to critical technologies — while boosting the country’s long-term growth potential through support for emerging industries,” reported The Japan Times.
The blueprint forms a central part of Takaichi’s bid to reshape Japan’s growth strategy amid rising geopolitical tension and rapid technological change. It channels funds towards sectors seen as critical to economic security, including supply-chain resilience, while attempting to offset the structural labour shortages caused by Japan’s ageing population.
Within the AI and chips allocation, the largest share will go to semiconductors, alongside “vertical AI” tools built for specific industries. The government projects semiconductor investment will generate 443 trillion yen in economic spillovers by fiscal 2040, with physical AI and vertical AI adding a further 144 trillion yen and 222 trillion yen, respectively.
The initiative builds on Japan’s existing chip revival efforts. Since 2021, the government has committed roughly 7.2 trillion yen to semiconductors and AI, including about 2.6 trillion yen in support for state-backed venture Rapidus, according to the industry ministry.
Separately released long-term fiscal projections modelled three scenarios for the strategy’s impact. Under the most optimistic case, Japan’s debt-to-GDP ratio would decline steadily even with annual government spending of 10 trillion yen. In the other two scenarios, assuming weaker uptake or a continuation of current trends, the ratio would resume climbing during the 2030s. All three assume inflation settles near 2%.
The figures exclude potential rises in defence spending or consumption-tax cuts, suggesting fiscal strain could exceed current estimates. Takaichi’s agenda has already moved markets: The Nikkei 225 briefly breached 70,000 in June 2026, even as superlong government bond yields hit multi-decade highs on fiscal sustainability concerns.
The Japanese government has also released long-term economic and fiscal projections incorporating Takaichi’s growth strategy under three scenarios.
“In the most optimistic case, in which the strategy delivers as intended, the debt-to-GDP ratio is expected to decline steadily even as the government contributes 10 trillion yen in real spending toward the plan each year,” The Japan Times reported.
In the other two, where technological and market uncertainties curb the strategy’s impact, or where current trends persist, the ratio is projected to begin rising again during the 2030s. All three scenarios, as per the government, assume inflation stabilises at around 2%.
The blueprint’s debut also coincides with Takaichi’s government shifting its fiscal focus toward reducing the debt-to-GDP ratio, moving away from using a primary balance target that had guided government policy for more than two decades. The debt-to-GDP metric is generally considered easier to improve during periods of inflation.